Many Gui controls accept now nil for text.

API.md

@@ -8339,7 +8339,7 @@ Get current music time played (in seconds)
 
 Round float value
 
-- Success return float
+- Success return int
 
 ---
 
@@ -9222,7 +9222,7 @@ Get a quaternion for a given rotation matrix
 
 > result = RL.QuaternionToMatrix( Quaternion q )
 
-Get a quaternion for a given rotation matrix
+Get a matrix for a given quaternion
 
 - Success return Matrix
 
@@ -9416,7 +9416,7 @@ Set tooltip string
 
 ---
 
-> text = RL.GuiIconText( int iconId, string text )
+> text = RL.GuiIconText( int iconId, string|nil text )
 
 Get text with icon id prepended (if supported)
 
@@ -9466,7 +9466,7 @@ Draw icon
 
 ---
 
-> result = RL.GuiWindowBox( Rectangle bounds, string title )
+> result = RL.GuiWindowBox( Rectangle bounds, string|nil title )
 
 Window Box control, shows a window that can be closed
 
@@ -9474,7 +9474,7 @@ Window Box control, shows a window that can be closed
 
 ---
 
-> result = RL.GuiGroupBox( Rectangle bounds, string text )
+> result = RL.GuiGroupBox( Rectangle bounds, string|nil text )
 
 Group Box control with text name
 
@@ -9482,7 +9482,7 @@ Group Box control with text name
 
 ---
 
-> result = RL.GuiLine( Rectangle bounds, string text )
+> result = RL.GuiLine( Rectangle bounds, string|nil text )
 
 Line separator control, could contain text
 
@@ -9490,7 +9490,7 @@ Line separator control, could contain text
 
 ---
 
-> result = RL.GuiPanel( Rectangle bounds, string text )
+> result = RL.GuiPanel( Rectangle bounds, string|nil text )
 
 Panel control, useful to group controls
 
@@ -9506,7 +9506,7 @@ Tab Bar control, returns TAB to be closed or -1
 
 ---
 
-> result, scroll, view = RL.GuiScrollPanel( Rectangle bounds, string text, Rectangle content, Vector2 scroll, Rectangle view )
+> result, scroll, view = RL.GuiScrollPanel( Rectangle bounds, string|nil text, Rectangle content, Vector2 scroll, Rectangle view )
 
 Scroll Panel control
 
@@ -9518,7 +9518,7 @@ Scroll Panel control
 
 ---
 
-> result = RL.GuiLabel( Rectangle bounds, string text )
+> result = RL.GuiLabel( Rectangle bounds, string|nil text )
 
 Label control, shows text
 
@@ -9526,7 +9526,7 @@ Label control, shows text
 
 ---
 
-> result = RL.GuiButton( Rectangle bounds, string text )
+> result = RL.GuiButton( Rectangle bounds, string|nil text )
 
 Button control, returns true when clicked
 
@@ -9534,7 +9534,7 @@ Button control, returns true when clicked
 
 ---
 
-> result = RL.GuiLabelButton( Rectangle bounds, string text )
+> result = RL.GuiLabelButton( Rectangle bounds, string|nil text )
 
 Label button control, show true when clicked
 
@@ -9542,7 +9542,7 @@ Label button control, show true when clicked
 
 ---
 
-> result, active = RL.GuiToggle( Rectangle bounds, string text, bool active )
+> result, active = RL.GuiToggle( Rectangle bounds, string|nil text, bool active )
 
 Toggle Button control, returns true when active
 
@@ -9550,7 +9550,7 @@ Toggle Button control, returns true when active
 
 ---
 
-> result, active = RL.GuiToggleGroup( Rectangle bounds, string text, int active )
+> result, active = RL.GuiToggleGroup( Rectangle bounds, string|nil text, int active )
 
 Toggle Group control, returns active toggle index
 
@@ -9558,7 +9558,7 @@ Toggle Group control, returns active toggle index
 
 ---
 
-> result, active = RL.GuiToggleSlider( Rectangle bounds, string text, int active )
+> result, active = RL.GuiToggleSlider( Rectangle bounds, string|nil text, int active )
 
 Toggle Slider control, returns true when clicked
 
@@ -9566,7 +9566,7 @@ Toggle Slider control, returns true when clicked
 
 ---
 
-> result, checked, textBounds = RL.GuiCheckBox( Rectangle bounds, string text, bool checked )
+> result, checked, textBounds = RL.GuiCheckBox( Rectangle bounds, string|nil text, bool checked )
 
 Check Box control, returns true when active
 
@@ -9574,7 +9574,7 @@ Check Box control, returns true when active
 
 ---
 
-> result, active = RL.GuiComboBox( Rectangle bounds, string text, int active )
+> result, active = RL.GuiComboBox( Rectangle bounds, string|nil text, int active )
 
 Combo Box control, returns selected item index
 
@@ -9590,7 +9590,7 @@ Dropdown Box control, returns selected item
 
 ---
 
-> result, value, textBounds = RL.GuiSpinner( Rectangle bounds, string text, int value, int minValue, int maxValue, bool editMode )
+> result, value, textBounds = RL.GuiSpinner( Rectangle bounds, string|nil text, int value, int minValue, int maxValue, bool editMode )
 
 Spinner control, returns selected value
 
@@ -9598,7 +9598,7 @@ Spinner control, returns selected value
 
 ---
 
-> result, value, textBounds = RL.GuiValueBox( Rectangle bounds, string text, int value, int minValue, int maxValue, bool editMode )
+> result, value, textBounds = RL.GuiValueBox( Rectangle bounds, string|nil text, int value, int minValue, int maxValue, bool editMode )
 
 Value Box control, updates input text with numbers
 
@@ -9614,7 +9614,7 @@ Text Box control, updates input text
 
 ---
 
-> result, value, textLeftBounds, textRightBounds = RL.GuiSlider( Rectangle bounds, string textLeft, string textRight, float value, float minValue, float maxValue )
+> result, value, textLeftBounds, textRightBounds = RL.GuiSlider( Rectangle bounds, string|nil textLeft, string|nil textRight, float value, float minValue, float maxValue )
 
 Slider control, returns selected value
 
@@ -9622,7 +9622,7 @@ Slider control, returns selected value
 
 ---
 
-> result, value, textLeftBounds, textRightBounds = RL.GuiSliderBar( Rectangle bounds, string textLeft, string textRight, float value, float minValue, float maxValue )
+> result, value, textLeftBounds, textRightBounds = RL.GuiSliderBar( Rectangle bounds, string|nil textLeft, string|nil textRight, float value, float minValue, float maxValue )
 
 Slider Bar control, returns selected value
 
@@ -9630,7 +9630,7 @@ Slider Bar control, returns selected value
 
 ---
 
-> result, value, textLeftBounds, textRightBounds = RL.GuiProgressBar( Rectangle bounds, string textLeft, string textRight, float value, float minValue, float maxValue )
+> result, value, textLeftBounds, textRightBounds = RL.GuiProgressBar( Rectangle bounds, string|nil textLeft, string|nil textRight, float value, float minValue, float maxValue )
 
 Progress Bar control, shows current progress value
 
@@ -9638,7 +9638,7 @@ Progress Bar control, shows current progress value
 
 ---
 
-> result = RL.GuiStatusBar( Rectangle bounds, string text )
+> result = RL.GuiStatusBar( Rectangle bounds, string|nil text )
 
 Status Bar control, shows info text
 
@@ -9646,7 +9646,7 @@ Status Bar control, shows info text
 
 ---
 
-> result = RL.GuiDummyRec( Rectangle bounds, string text )
+> result = RL.GuiDummyRec( Rectangle bounds, string|nil text )
 
 Dummy control for placeholders
 
@@ -9654,7 +9654,7 @@ Dummy control for placeholders
 
 ---
 
-> result, mouseCell = RL.GuiGrid( Rectangle bounds, string text, float spacing, int subdivs, Vector2 mouseCell )
+> result, mouseCell = RL.GuiGrid( Rectangle bounds, string|nil text, float spacing, int subdivs, Vector2 mouseCell )
 
 Grid control, returns mouse cell position
 
@@ -9674,7 +9674,7 @@ Scroll bar control
 
 ---
 
-> result, scrollIndex, active = RL.GuiListView( Rectangle bounds, string text, int scrollIndex, int active )
+> result, scrollIndex, active = RL.GuiListView( Rectangle bounds, string|nil text, int scrollIndex, int active )
 
 List View control, returns selected list item index
 
@@ -9690,7 +9690,7 @@ List View with extended parameters
 
 ---
 
-> result = RL.GuiMessageBox( Rectangle bounds, string title, string message, string buttons )
+> result = RL.GuiMessageBox( Rectangle bounds, string|nil title, string message, string buttons )
 
 Message Box control, displays a message
 
@@ -9706,7 +9706,7 @@ Text Input Box control, ask for text, supports secret
 
 ---
 
-> result, color = RL.GuiColorPicker( Rectangle bounds, string text, Color color )
+> result, color = RL.GuiColorPicker( Rectangle bounds, string|nil text, Color color )
 
 Color Picker control (multiple color controls)
 
@@ -9714,7 +9714,7 @@ Color Picker control (multiple color controls)
 
 ---
 
-> result, color = RL.GuiColorPanel( Rectangle bounds, string text, Color color )
+> result, color = RL.GuiColorPanel( Rectangle bounds, string|nil text, Color color )
 
 Color Panel control
 
@@ -9722,7 +9722,7 @@ Color Panel control
 
 ---
 
-> result, alpha = RL.GuiColorBarAlpha( Rectangle bounds, string text, float alpha )
+> result, alpha = RL.GuiColorBarAlpha( Rectangle bounds, string|nil text, float alpha )
 
 Color Bar Alpha control
 
@@ -9730,7 +9730,7 @@ Color Bar Alpha control
 
 ---
 
-> result, value = RL.GuiColorBarHue( Rectangle bounds, string text, float value )
+> result, value = RL.GuiColorBarHue( Rectangle bounds, string|nil text, float value )
 
 Color Bar Hue control
 
@@ -9738,7 +9738,7 @@ Color Bar Hue control
 
 ---
 
-> result, colorHsv = RL.GuiColorPickerHSV( Rectangle bounds, string text, Vector3 colorHsv )
+> result, colorHsv = RL.GuiColorPickerHSV( Rectangle bounds, string|nil text, Vector3 colorHsv )
 
 Color Picker control that avoids conversion to RGB on each call (multiple color controls)
 
@@ -9746,7 +9746,7 @@ Color Picker control that avoids conversion to RGB on each call (multiple color
 
 ---
 
-> result, colorHsv = RL.GuiColorPanelHSV( Rectangle bounds, string text, Vector3 colorHsv )
+> result, colorHsv = RL.GuiColorPanelHSV( Rectangle bounds, string|nil text, Vector3 colorHsv )
 
 Color Panel control that returns HSV color value, used by GuiColorPickerHSV()
 

ReiLua_API.lua

@@ -5416,7 +5416,7 @@ function RL.GetMusicTimePlayed( music ) end
 -- Math - Utils
 
 ---Round float value
----- Success return float
+---- Success return int
 ---@param value number
 ---@return any result 
 function RL.Round( value ) end
@@ -6179,7 +6179,7 @@ function RL.QuaternionFromVector3ToVector3( from, to ) end
 ---@return any result 
 function RL.QuaternionFromMatrix( mat ) end
 
----Get a quaternion for a given rotation matrix
+---Get a matrix for a given quaternion
 ---- Success return Matrix
 ---@param q table
 ---@return any result 
@@ -6329,7 +6329,7 @@ function  RL.GuiSetTooltip( tooltip ) end
 ---Get text with icon id prepended (if supported)
 ---- Success return string
 ---@param iconId integer
----@param text string
+---@param text string|nil
 ---@return any text 
 function RL.GuiIconText( iconId, text ) end
 
@@ -6371,28 +6371,28 @@ function  RL.GuiDrawIcon( iconId, pos, pixelSize, color ) end
 ---Window Box control, shows a window that can be closed
 ---- Success return int
 ---@param bounds table
----@param title string
+---@param title string|nil
 ---@return any result 
 function RL.GuiWindowBox( bounds, title ) end
 
 ---Group Box control with text name
 ---- Success return int
 ---@param bounds table
----@param text string
+---@param text string|nil
 ---@return any result 
 function RL.GuiGroupBox( bounds, text ) end
 
 ---Line separator control, could contain text
 ---- Success return int
 ---@param bounds table
----@param text string
+---@param text string|nil
 ---@return any result 
 function RL.GuiLine( bounds, text ) end
 
 ---Panel control, useful to group controls
 ---- Success return int
 ---@param bounds table
----@param text string
+---@param text string|nil
 ---@return any result 
 function RL.GuiPanel( bounds, text ) end
 
@@ -6408,7 +6408,7 @@ function RL.GuiTabBar( bounds, text, active ) end
 ---Scroll Panel control
 ---- Success return int, Vector2, Rectangle
 ---@param bounds table
----@param text string
+---@param text string|nil
 ---@param content table
 ---@param scroll table
 ---@param view table
@@ -6422,28 +6422,28 @@ function RL.GuiScrollPanel( bounds, text, content, scroll, view ) end
 ---Label control, shows text
 ---- Success return int
 ---@param bounds table
----@param text string
+---@param text string|nil
 ---@return any result 
 function RL.GuiLabel( bounds, text ) end
 
 ---Button control, returns true when clicked
 ---- Success return int
 ---@param bounds table
----@param text string
+---@param text string|nil
 ---@return any result 
 function RL.GuiButton( bounds, text ) end
 
 ---Label button control, show true when clicked
 ---- Success return int
 ---@param bounds table
----@param text string
+---@param text string|nil
 ---@return any result 
 function RL.GuiLabelButton( bounds, text ) end
 
 ---Toggle Button control, returns true when active
 ---- Success return int, bool
 ---@param bounds table
----@param text string
+---@param text string|nil
 ---@param active boolean
 ---@return any result
 ---@return any active 
@@ -6452,7 +6452,7 @@ function RL.GuiToggle( bounds, text, active ) end
 ---Toggle Group control, returns active toggle index
 ---- Success return int, int
 ---@param bounds table
----@param text string
+---@param text string|nil
 ---@param active integer
 ---@return any result
 ---@return any active 
@@ -6461,7 +6461,7 @@ function RL.GuiToggleGroup( bounds, text, active ) end
 ---Toggle Slider control, returns true when clicked
 ---- Success return int, int
 ---@param bounds table
----@param text string
+---@param text string|nil
 ---@param active integer
 ---@return any result
 ---@return any active 
@@ -6470,7 +6470,7 @@ function RL.GuiToggleSlider( bounds, text, active ) end
 ---Check Box control, returns true when active
 ---- Success return bool, Rectangle
 ---@param bounds table
----@param text string
+---@param text string|nil
 ---@param checked boolean
 ---@return any result
 ---@return any checked
@@ -6480,7 +6480,7 @@ function RL.GuiCheckBox( bounds, text, checked ) end
 ---Combo Box control, returns selected item index
 ---- Success return int, int
 ---@param bounds table
----@param text string
+---@param text string|nil
 ---@param active integer
 ---@return any result
 ---@return any active 
@@ -6499,7 +6499,7 @@ function RL.GuiDropdownBox( bounds, text, active, editMode ) end
 ---Spinner control, returns selected value
 ---- Success return int, int, Rectangle
 ---@param bounds table
----@param text string
+---@param text string|nil
 ---@param value integer
 ---@param minValue integer
 ---@param maxValue integer
@@ -6512,7 +6512,7 @@ function RL.GuiSpinner( bounds, text, value, minValue, maxValue, editMode ) end
 ---Value Box control, updates input text with numbers
 ---- Success return int, int, Rectangle
 ---@param bounds table
----@param text string
+---@param text string|nil
 ---@param value integer
 ---@param minValue integer
 ---@param maxValue integer
@@ -6535,8 +6535,8 @@ function RL.GuiTextBox( bounds, text, textSize, editMode ) end
 ---Slider control, returns selected value
 ---- Success return int, float, Rectangle, Rectangle
 ---@param bounds table
----@param textLeft string
----@param textRight string
+---@param textLeft string|nil
+---@param textRight string|nil
 ---@param value number
 ---@param minValue number
 ---@param maxValue number
@@ -6549,8 +6549,8 @@ function RL.GuiSlider( bounds, textLeft, textRight, value, minValue, maxValue )
 ---Slider Bar control, returns selected value
 ---- Success return int, float, Rectangle, Rectangle
 ---@param bounds table
----@param textLeft string
----@param textRight string
+---@param textLeft string|nil
+---@param textRight string|nil
 ---@param value number
 ---@param minValue number
 ---@param maxValue number
@@ -6563,8 +6563,8 @@ function RL.GuiSliderBar( bounds, textLeft, textRight, value, minValue, maxValue
 ---Progress Bar control, shows current progress value
 ---- Success return int, float, Rectangle, Rectangle
 ---@param bounds table
----@param textLeft string
----@param textRight string
+---@param textLeft string|nil
+---@param textRight string|nil
 ---@param value number
 ---@param minValue number
 ---@param maxValue number
@@ -6577,21 +6577,21 @@ function RL.GuiProgressBar( bounds, textLeft, textRight, value, minValue, maxVal
 ---Status Bar control, shows info text
 ---- Success return int
 ---@param bounds table
----@param text string
+---@param text string|nil
 ---@return any result 
 function RL.GuiStatusBar( bounds, text ) end
 
 ---Dummy control for placeholders
 ---- Success return int
 ---@param bounds table
----@param text string
+---@param text string|nil
 ---@return any result 
 function RL.GuiDummyRec( bounds, text ) end
 
 ---Grid control, returns mouse cell position
 ---- Success return int, Vector2
 ---@param bounds table
----@param text string
+---@param text string|nil
 ---@param spacing number
 ---@param subdivs integer
 ---@param mouseCell table
@@ -6613,7 +6613,7 @@ function RL.GuiScrollBar( bounds, value, minValue, maxValue ) end
 ---List View control, returns selected list item index
 ---- Success return int, int, int
 ---@param bounds table
----@param text string
+---@param text string|nil
 ---@param scrollIndex integer
 ---@param active integer
 ---@return any result
@@ -6637,7 +6637,7 @@ function RL.GuiListViewEx( bounds, text, scrollIndex, active, focus ) end
 ---Message Box control, displays a message
 ---- Success return int
 ---@param bounds table
----@param title string
+---@param title string|nil
 ---@param message string
 ---@param buttons string
 ---@return any result 
@@ -6660,7 +6660,7 @@ function RL.GuiTextInputBox( bounds, title, message, buttons, text, textMaxSize,
 ---Color Picker control (multiple color controls)
 ---- Success return int, Color
 ---@param bounds table
----@param text string
+---@param text string|nil
 ---@param color table
 ---@return any result
 ---@return any color 
@@ -6669,7 +6669,7 @@ function RL.GuiColorPicker( bounds, text, color ) end
 ---Color Panel control
 ---- Success return int, Color
 ---@param bounds table
----@param text string
+---@param text string|nil
 ---@param color table
 ---@return any result
 ---@return any color 
@@ -6678,7 +6678,7 @@ function RL.GuiColorPanel( bounds, text, color ) end
 ---Color Bar Alpha control
 ---- Success return int, float
 ---@param bounds table
----@param text string
+---@param text string|nil
 ---@param alpha number
 ---@return any result
 ---@return any alpha 
@@ -6687,7 +6687,7 @@ function RL.GuiColorBarAlpha( bounds, text, alpha ) end
 ---Color Bar Hue control
 ---- Success return int, float
 ---@param bounds table
----@param text string
+---@param text string|nil
 ---@param value number
 ---@return any result
 ---@return any value 
@@ -6696,7 +6696,7 @@ function RL.GuiColorBarHue( bounds, text, value ) end
 ---Color Picker control that avoids conversion to RGB on each call (multiple color controls)
 ---- Success return int, Vector3
 ---@param bounds table
----@param text string
+---@param text string|nil
 ---@param colorHsv table
 ---@return any result
 ---@return any colorHsv 
@@ -6705,7 +6705,7 @@ function RL.GuiColorPickerHSV( bounds, text, colorHsv ) end
 ---Color Panel control that returns HSV color value, used by GuiColorPickerHSV()
 ---- Success return int, Vector3
 ---@param bounds table
----@param text string
+---@param text string|nil
 ---@param colorHsv table
 ---@return any result
 ---@return any colorHsv 

changelog

@@ -63,6 +63,7 @@ DETAILED CHANGES:
 	- ADDED: GetMouseOffset and GetMouseScale.
 	- CHANGE: Raymath *Equals functions return bool instead of int.
 	- FIXED: ColorToInt cast to unsigned int.
+	- ADDED: Many Gui controls accept now nil for text.
 
 ------------------------------------------------------------------------
 Release:	ReiLua version 0.7.0		Using Raylib 5.0 and Forked Raygui 4.0

devnotes

@@ -3,6 +3,7 @@ Current {
 
 Backlog {
 	* Raygui
+		* GuiToggleSlider.
 		* ICON_ defines.
 	* Raygui lib
 		* Check if could remove flickering from changing draw order by making queue for order
@@ -19,6 +20,9 @@ Backlog {
 		* Improve Dungeon crawler example by generating custom mesh instead of drawing 3D quads.
 		* Platformer example physics update for true framerate independence.
 	* Android support
+
+	* For raylib 5.5
+		* DrawBillboardPro BREAKING CHANGE.
 }
 
 Bugs {

examples/resources/lib/raygui.lua

@@ -2035,17 +2035,17 @@ end
 ---@alias Color table
 
 ---@param bounds Rectangle
----@param text string
+---@param title string|nil
 ---@param callbacks table close, grab, drag.
 ---@param styles table|nil
 ---@param tooltip string|nil
 ---@return table WindowBox
-function Raygui:WindowBox( bounds, text, callbacks, styles, tooltip )
-	return self:addControl( WindowBox:new( bounds, text, callbacks, styles, tooltip ) )
+function Raygui:WindowBox( bounds, title, callbacks, styles, tooltip )
+	return self:addControl( WindowBox:new( bounds, title, callbacks, styles, tooltip ) )
 end
 
 ---@param bounds Rectangle
----@param text string
+---@param text string|nil
 ---@param styles table|nil
 ---@param tooltip string|nil
 ---@return table GroupBox
@@ -2054,7 +2054,7 @@ function Raygui:GroupBox( bounds, text, styles, tooltip )
 end
 
 ---@param bounds Rectangle
----@param text string
+---@param text string|nil
 ---@param styles table|nil
 ---@param tooltip string|nil
 ---@return table Line
@@ -2063,7 +2063,7 @@ function Raygui:Line( bounds, text, styles, tooltip )
 end
 
 ---@param bounds Rectangle
----@param text string
+---@param text string|nil
 ---@param callbacks table grab, drag.
 ---@param styles table|nil
 ---@param tooltip string|nil
@@ -2073,7 +2073,7 @@ function Raygui:Panel( bounds, text, callbacks, styles, tooltip )
 end
 
 ---@param bounds Rectangle
----@param text string
+---@param text string|nil
 ---@param active integer
 ---@param callbacks table select, close, grab, drag.
 ---@param styles table|nil
@@ -2084,7 +2084,7 @@ function Raygui:GuiTabBar( bounds, text, active, callbacks, styles, tooltip )
 end
 
 ---@param bounds Rectangle
----@param text string
+---@param text string|nil
 ---@param content Rectangle
 ---@param scroll Vector2
 ---@param callbacks table scroll, grab, drag.
@@ -2096,7 +2096,7 @@ function Raygui:ScrollPanel( bounds, text, content, scroll, callbacks, styles, t
 end
 
 ---@param bounds Rectangle
----@param text string
+---@param text string|nil
 ---@param styles table|nil
 ---@param tooltip string|nil
 ---@return table Label
@@ -2105,7 +2105,7 @@ function Raygui:Label( bounds, text, styles, tooltip )
 end
 
 ---@param bounds Rectangle
----@param text string
+---@param text string|nil
 ---@param callbacks table pressed.
 ---@param styles table|nil
 ---@param tooltip string|nil
@@ -2115,7 +2115,7 @@ function Raygui:Button( bounds, text, callbacks, styles, tooltip )
 end
 
 ---@param bounds Rectangle
----@param text string
+---@param text string|nil
 ---@param callbacks table pressed.
 ---@param styles table|nil
 ---@param tooltip string|nil
@@ -2125,7 +2125,7 @@ function Raygui:LabelButton( bounds, text, callbacks, styles, tooltip )
 end
 
 ---@param bounds Rectangle
----@param text string
+---@param text string|nil
 ---@param active boolean
 ---@param callbacks table pressed.
 ---@param styles table|nil
@@ -2136,7 +2136,7 @@ function Raygui:Toggle( bounds, text, active, callbacks, styles, tooltip )
 end
 
 ---@param bounds Rectangle
----@param text string
+---@param text string|nil
 ---@param active integer
 ---@param callbacks table select.
 ---@param styles table|nil
@@ -2147,7 +2147,7 @@ function Raygui:ToggleGroup( bounds, text, active, callbacks, styles, tooltip )
 end
 
 ---@param bounds Rectangle
----@param text string
+---@param text string|nil
 ---@param checked boolean
 ---@param callbacks table pressed.
 ---@param styles table|nil
@@ -2158,7 +2158,7 @@ function Raygui:CheckBox( bounds, text, checked, callbacks, styles, tooltip )
 end
 
 ---@param bounds Rectangle
----@param text string
+---@param text string|nil
 ---@param active integer
 ---@param callbacks table select.
 ---@param styles table|nil
@@ -2181,7 +2181,7 @@ function Raygui:DropdownBox( bounds, text, active, editMode, callbacks, styles,
 end
 
 ---@param bounds Rectangle
----@param text string
+---@param text string|nil
 ---@param value integer
 ---@param minValue integer
 ---@param maxValue integer
@@ -2195,7 +2195,7 @@ function Raygui:Spinner( bounds, text, value, minValue, maxValue, editMode, call
 end
 
 ---@param bounds Rectangle
----@param text string
+---@param text string|nil
 ---@param value integer
 ---@param minValue integer
 ---@param maxValue integer
@@ -2263,7 +2263,7 @@ function Raygui:ProgressBar( bounds, textLeft, textRight, value, minValue, maxVa
 end
 
 ---@param bounds Rectangle
----@param text string
+---@param text string|nil
 ---@param styles table|nil
 ---@param tooltip string|nil
 ---@return table StatusBar
@@ -2272,7 +2272,7 @@ function Raygui:StatusBar( bounds, text, styles, tooltip )
 end
 
 ---@param bounds Rectangle
----@param text string
+---@param text string|nil
 ---@param styles table|nil
 ---@param tooltip string|nil
 ---@return table DummyRec
@@ -2281,7 +2281,7 @@ function Raygui:DummyRec( bounds, text, styles, tooltip )
 end
 
 ---@param bounds Rectangle
----@param text string
+---@param text string|nil
 ---@param spacing number
 ---@param subdivs integer
 ---@param callbacks table cellChange.
@@ -2293,7 +2293,7 @@ function Raygui:Grid( bounds, text, spacing, subdivs, callbacks, styles, tooltip
 end
 
 ---@param bounds Rectangle
----@param text string
+---@param text string|nil
 ---@param scrollIndex integer
 ---@param active integer
 ---@param callbacks table select.
@@ -2345,7 +2345,7 @@ function Raygui:TextInputBox( bounds, title, message, buttons, text, textMaxSize
 end
 
 ---@param bounds Rectangle
----@param text string
+---@param text string|nil
 ---@param color Color
 ---@param callbacks table edit.
 ---@param styles table|nil
@@ -2356,7 +2356,7 @@ function Raygui:ColorPicker( bounds, text, color, callbacks, styles, tooltip )
 end
 
 ---@param bounds Rectangle
----@param text string
+---@param text string|nil
 ---@param color Color
 ---@param callbacks table edit.
 ---@param styles table|nil
@@ -2367,7 +2367,7 @@ function Raygui:ColorPanel( bounds, text, color, callbacks, styles, tooltip )
 end
 
 ---@param bounds Rectangle
----@param text string
+---@param text string|nil
 ---@param alpha number
 ---@param callbacks table edit.
 ---@param styles table|nil
@@ -2378,7 +2378,7 @@ function Raygui:ColorBarAlpha( bounds, text, alpha, callbacks, styles, tooltip )
 end
 
 ---@param bounds Rectangle
----@param text string
+---@param text string|nil
 ---@param value number
 ---@param callbacks table edit.
 ---@param styles table|nil

src/rgui.c

@@ -7,6 +7,15 @@
 #define RAYGUI_IMPLEMENTATION
 #include "raygui.h"
 
+inline char* getTextOrNil( lua_State* L, int index ) {
+	char* text = NULL;
+
+	if ( lua_isstring( L, index ) ) {
+		text = (char*)lua_tostring( L, index );
+	}
+	return text;
+}
+
 /*
 ## Gui - Global gui state control functions
 */
@@ -254,7 +263,7 @@ int lguiGuiSetTooltip( lua_State* L ) {
 */
 
 /*
-> text = RL.GuiIconText( int iconId, string text )
+> text = RL.GuiIconText( int iconId, string|nil text )
 
 Get text with icon id prepended (if supported)
 
@@ -262,13 +271,9 @@ Get text with icon id prepended (if supported)
 */
 int lguiGuiIconText( lua_State* L ) {
 	int iconId = luaL_checkinteger( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 
-	if ( TextIsEqual( luaL_checkstring( L, 2 ), "" ) ) {
-		lua_pushstring( L, GuiIconText( iconId, NULL ) );
-	}
-	else {
-		lua_pushstring( L, GuiIconText( iconId, luaL_checkstring( L, 2 ) ) );
-	}
+	lua_pushstring( L, GuiIconText( iconId, text ) );
 
 	return 1;
 }
@@ -386,7 +391,7 @@ int lguiGuiDrawIcon( lua_State* L ) {
 */
 
 /*
-> result = RL.GuiWindowBox( Rectangle bounds, string title )
+> result = RL.GuiWindowBox( Rectangle bounds, string|nil title )
 
 Window Box control, shows a window that can be closed
 
@@ -394,14 +399,15 @@ Window Box control, shows a window that can be closed
 */
 int lguiGuiWindowBox( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* title = getTextOrNil( L, 2 );
 
-	lua_pushinteger( L, GuiWindowBox( bounds, luaL_checkstring( L, 2 ) ) );
+	lua_pushinteger( L, GuiWindowBox( bounds, title ) );
 
 	return 1;
 }
 
 /*
-> result = RL.GuiGroupBox( Rectangle bounds, string text )
+> result = RL.GuiGroupBox( Rectangle bounds, string|nil text )
 
 Group Box control with text name
 
@@ -409,14 +415,15 @@ Group Box control with text name
 */
 int lguiGuiGroupBox( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 
-	lua_pushinteger( L, GuiGroupBox( bounds, luaL_checkstring( L, 2 ) ) );
+	lua_pushinteger( L, GuiGroupBox( bounds, text ) );
 
 	return 1;
 }
 
 /*
-> result = RL.GuiLine( Rectangle bounds, string text )
+> result = RL.GuiLine( Rectangle bounds, string|nil text )
 
 Line separator control, could contain text
 
@@ -424,14 +431,15 @@ Line separator control, could contain text
 */
 int lguiGuiLine( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 
-	lua_pushinteger( L, GuiLine( bounds, luaL_checkstring( L, 2 ) ) );
+	lua_pushinteger( L, GuiLine( bounds, text ) );
 
 	return 1;
 }
 
 /*
-> result = RL.GuiPanel( Rectangle bounds, string text )
+> result = RL.GuiPanel( Rectangle bounds, string|nil text )
 
 Panel control, useful to group controls
 
@@ -439,8 +447,9 @@ Panel control, useful to group controls
 */
 int lguiGuiPanel( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 
-	lua_pushinteger( L, GuiPanel( bounds, luaL_checkstring( L, 2 ) ) );
+	lua_pushinteger( L, GuiPanel( bounds, text ) );
 
 	return 1;
 }
@@ -466,7 +475,7 @@ int lguiGuiTabBar( lua_State* L ) {
 }
 
 /*
-> result, scroll, view = RL.GuiScrollPanel( Rectangle bounds, string text, Rectangle content, Vector2 scroll, Rectangle view )
+> result, scroll, view = RL.GuiScrollPanel( Rectangle bounds, string|nil text, Rectangle content, Vector2 scroll, Rectangle view )
 
 Scroll Panel control
 
@@ -474,11 +483,12 @@ Scroll Panel control
 */
 int lguiGuiScrollPanel( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 	Rectangle content = uluaGetRectangle( L, 3 );
 	Vector2 scroll = uluaGetVector2( L, 4 );
 	Rectangle view = uluaGetRectangle( L, 5 );
 
-	lua_pushinteger( L, GuiScrollPanel( bounds, luaL_checkstring( L, 2 ), content, &scroll, &view ) );
+	lua_pushinteger( L, GuiScrollPanel( bounds, text, content, &scroll, &view ) );
 	uluaPushVector2( L, scroll );
 	uluaPushRectangle( L, view );
 
@@ -490,7 +500,7 @@ int lguiGuiScrollPanel( lua_State* L ) {
 */
 
 /*
-> result = RL.GuiLabel( Rectangle bounds, string text )
+> result = RL.GuiLabel( Rectangle bounds, string|nil text )
 
 Label control, shows text
 
@@ -498,14 +508,15 @@ Label control, shows text
 */
 int lguiGuiLabel( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 
-	lua_pushinteger( L, GuiLabel( bounds, luaL_checkstring( L, 2 ) ) );
+	lua_pushinteger( L, GuiLabel( bounds, text ) );
 
 	return 1;
 }
 
 /*
-> result = RL.GuiButton( Rectangle bounds, string text )
+> result = RL.GuiButton( Rectangle bounds, string|nil text )
 
 Button control, returns true when clicked
 
@@ -513,14 +524,15 @@ Button control, returns true when clicked
 */
 int lguiGuiButton( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 
-	lua_pushinteger( L, GuiButton( bounds, luaL_checkstring( L, 2 ) ) );
+	lua_pushinteger( L, GuiButton( bounds, text ) );
 
 	return 1;
 }
 
 /*
-> result = RL.GuiLabelButton( Rectangle bounds, string text )
+> result = RL.GuiLabelButton( Rectangle bounds, string|nil text )
 
 Label button control, show true when clicked
 
@@ -528,14 +540,15 @@ Label button control, show true when clicked
 */
 int lguiGuiLabelButton( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 
-	lua_pushinteger( L, GuiLabelButton( bounds, luaL_checkstring( L, 2 ) ) );
+	lua_pushinteger( L, GuiLabelButton( bounds, text ) );
 
 	return 1;
 }
 
 /*
-> result, active = RL.GuiToggle( Rectangle bounds, string text, bool active )
+> result, active = RL.GuiToggle( Rectangle bounds, string|nil text, bool active )
 
 Toggle Button control, returns true when active
 
@@ -543,16 +556,17 @@ Toggle Button control, returns true when active
 */
 int lguiGuiToggle( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 	bool active = uluaGetBoolean( L, 3 );
 
-	lua_pushinteger( L, GuiToggle( bounds, luaL_checkstring( L, 2 ), &active ) );
+	lua_pushinteger( L, GuiToggle( bounds, text, &active ) );
 	lua_pushboolean( L, active );
 
 	return 2;
 }
 
 /*
-> result, active = RL.GuiToggleGroup( Rectangle bounds, string text, int active )
+> result, active = RL.GuiToggleGroup( Rectangle bounds, string|nil text, int active )
 
 Toggle Group control, returns active toggle index
 
@@ -560,16 +574,17 @@ Toggle Group control, returns active toggle index
 */
 int lguiGuiToggleGroup( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 	int active = luaL_checkinteger( L, 3 );
 
-	lua_pushinteger( L, GuiToggleGroup( bounds, luaL_checkstring( L, 2 ), &active ) );
+	lua_pushinteger( L, GuiToggleGroup( bounds, text, &active ) );
 	lua_pushinteger( L, active );
 
 	return 2;
 }
 
 /*
-> result, active = RL.GuiToggleSlider( Rectangle bounds, string text, int active )
+> result, active = RL.GuiToggleSlider( Rectangle bounds, string|nil text, int active )
 
 Toggle Slider control, returns true when clicked
 
@@ -577,16 +592,17 @@ Toggle Slider control, returns true when clicked
 */
 int lguiGuiToggleSlider( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 	int active = luaL_checkinteger( L, 3 );
 
-	lua_pushinteger( L, GuiToggleSlider( bounds, luaL_checkstring( L, 2 ), &active ) );
+	lua_pushinteger( L, GuiToggleSlider( bounds, text, &active ) );
 	lua_pushinteger( L, active );
 
 	return 2;
 }
 
 /*
-> result, checked, textBounds = RL.GuiCheckBox( Rectangle bounds, string text, bool checked )
+> result, checked, textBounds = RL.GuiCheckBox( Rectangle bounds, string|nil text, bool checked )
 
 Check Box control, returns true when active
 
@@ -594,10 +610,11 @@ Check Box control, returns true when active
 */
 int lguiGuiCheckBox( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 	bool checked = uluaGetBoolean( L, 3 );
 
 	Rectangle textBounds = {};
-	lua_pushinteger( L, GuiCheckBox( bounds, luaL_checkstring( L, 2 ), &checked, &textBounds ) );
+	lua_pushinteger( L, GuiCheckBox( bounds, text, &checked, &textBounds ) );
 	lua_pushboolean( L, checked );
 	uluaPushRectangle( L, textBounds );
 
@@ -605,7 +622,7 @@ int lguiGuiCheckBox( lua_State* L ) {
 }
 
 /*
-> result, active = RL.GuiComboBox( Rectangle bounds, string text, int active )
+> result, active = RL.GuiComboBox( Rectangle bounds, string|nil text, int active )
 
 Combo Box control, returns selected item index
 
@@ -613,9 +630,10 @@ Combo Box control, returns selected item index
 */
 int lguiGuiComboBox( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 	int active = luaL_checkinteger( L, 3 );
 
-	lua_pushinteger( L, GuiComboBox( bounds, luaL_checkstring( L, 2 ), &active ) );
+	lua_pushinteger( L, GuiComboBox( bounds, text, &active ) );
 	lua_pushinteger( L, active );
 
 	return 2;
@@ -630,17 +648,18 @@ Dropdown Box control, returns selected item
 */
 int lguiGuiDropdownBox( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	const char* text = luaL_checkstring( L, 2 );
 	int active = luaL_checkinteger( L, 3 );
 	bool editMode = uluaGetBoolean( L, 4 );
 
-	lua_pushinteger( L, GuiDropdownBox( bounds, luaL_checkstring( L, 2 ), &active, editMode ) );
+	lua_pushinteger( L, GuiDropdownBox( bounds, text, &active, editMode ) );
 	lua_pushinteger( L, active );
 
 	return 2;
 }
 
 /*
-> result, value, textBounds = RL.GuiSpinner( Rectangle bounds, string text, int value, int minValue, int maxValue, bool editMode )
+> result, value, textBounds = RL.GuiSpinner( Rectangle bounds, string|nil text, int value, int minValue, int maxValue, bool editMode )
 
 Spinner control, returns selected value
 
@@ -648,13 +667,14 @@ Spinner control, returns selected value
 */
 int lguiGuiSpinner( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 	int value = luaL_checkinteger( L, 3 );
 	int minValue = luaL_checkinteger( L, 4 );
 	int maxValue = luaL_checkinteger( L, 5 );
 	bool editMode = uluaGetBoolean( L, 6 );
 
 	Rectangle textBounds = { 0 };
-	lua_pushinteger( L, GuiSpinner( bounds, luaL_checkstring( L, 2 ), &value, minValue, maxValue, editMode, &textBounds ) );
+	lua_pushinteger( L, GuiSpinner( bounds, text, &value, minValue, maxValue, editMode, &textBounds ) );
 	lua_pushinteger( L, value );
 	uluaPushRectangle( L, textBounds );
 
@@ -662,7 +682,7 @@ int lguiGuiSpinner( lua_State* L ) {
 }
 
 /*
-> result, value, textBounds = RL.GuiValueBox( Rectangle bounds, string text, int value, int minValue, int maxValue, bool editMode )
+> result, value, textBounds = RL.GuiValueBox( Rectangle bounds, string|nil text, int value, int minValue, int maxValue, bool editMode )
 
 Value Box control, updates input text with numbers
 
@@ -670,13 +690,14 @@ Value Box control, updates input text with numbers
 */
 int lguiGuiValueBox( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 	int value = luaL_checkinteger( L, 3 );
 	int minValue = luaL_checkinteger( L, 4 );
 	int maxValue = luaL_checkinteger( L, 5 );
 	bool editMode = uluaGetBoolean( L, 6 );
 
 	Rectangle textBounds = { 0 };
-	lua_pushinteger( L, GuiValueBox( bounds, luaL_checkstring( L, 2 ), &value, minValue, maxValue, editMode, &textBounds ) );
+	lua_pushinteger( L, GuiValueBox( bounds, text, &value, minValue, maxValue, editMode, &textBounds ) );
 	lua_pushinteger( L, value );
 	uluaPushRectangle( L, textBounds );
 
@@ -704,7 +725,7 @@ int lguiGuiTextBox( lua_State* L ) {
 }
 
 /*
-> result, value, textLeftBounds, textRightBounds = RL.GuiSlider( Rectangle bounds, string textLeft, string textRight, float value, float minValue, float maxValue )
+> result, value, textLeftBounds, textRightBounds = RL.GuiSlider( Rectangle bounds, string|nil textLeft, string|nil textRight, float value, float minValue, float maxValue )
 
 Slider control, returns selected value
 
@@ -712,13 +733,15 @@ Slider control, returns selected value
 */
 int lguiGuiSlider( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* textLeft = getTextOrNil( L, 2 );
+	char* textRight = getTextOrNil( L, 3 );
 	float value = luaL_checknumber( L, 4 );
 	float minValue = luaL_checknumber( L, 5 );
 	float maxValue = luaL_checknumber( L, 6 );
 
 	Rectangle textLeftBounds = { 0 };
 	Rectangle textRightBounds = { 0 };
-	lua_pushinteger( L, GuiSlider( bounds, luaL_checkstring( L, 2 ), luaL_checkstring( L, 3 ), &value, minValue, maxValue, &textLeftBounds, &textRightBounds ) );
+	lua_pushinteger( L, GuiSlider( bounds, textLeft, textRight, &value, minValue, maxValue, &textLeftBounds, &textRightBounds ) );
 	lua_pushnumber( L, value );
 	uluaPushRectangle( L, textLeftBounds );
 	uluaPushRectangle( L, textRightBounds );
@@ -727,7 +750,7 @@ int lguiGuiSlider( lua_State* L ) {
 }
 
 /*
-> result, value, textLeftBounds, textRightBounds = RL.GuiSliderBar( Rectangle bounds, string textLeft, string textRight, float value, float minValue, float maxValue )
+> result, value, textLeftBounds, textRightBounds = RL.GuiSliderBar( Rectangle bounds, string|nil textLeft, string|nil textRight, float value, float minValue, float maxValue )
 
 Slider Bar control, returns selected value
 
@@ -735,13 +758,15 @@ Slider Bar control, returns selected value
 */
 int lguiGuiSliderBar( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* textLeft = getTextOrNil( L, 2 );
+	char* textRight = getTextOrNil( L, 3 );
 	float value = luaL_checknumber( L, 4 );
 	float minValue = luaL_checknumber( L, 5 );
 	float maxValue = luaL_checknumber( L, 6 );
 
 	Rectangle textLeftBounds = { 0 };
 	Rectangle textRightBounds = { 0 };
-	lua_pushinteger( L, GuiSliderBar( bounds, luaL_checkstring( L, 2 ), luaL_checkstring( L, 3 ), &value, minValue, maxValue, &textLeftBounds, &textRightBounds ) );
+	lua_pushinteger( L, GuiSliderBar( bounds, textLeft, textRight, &value, minValue, maxValue, &textLeftBounds, &textRightBounds ) );
 	lua_pushnumber( L, value );
 	uluaPushRectangle( L, textLeftBounds );
 	uluaPushRectangle( L, textRightBounds );
@@ -750,7 +775,7 @@ int lguiGuiSliderBar( lua_State* L ) {
 }
 
 /*
-> result, value, textLeftBounds, textRightBounds = RL.GuiProgressBar( Rectangle bounds, string textLeft, string textRight, float value, float minValue, float maxValue )
+> result, value, textLeftBounds, textRightBounds = RL.GuiProgressBar( Rectangle bounds, string|nil textLeft, string|nil textRight, float value, float minValue, float maxValue )
 
 Progress Bar control, shows current progress value
 
@@ -758,13 +783,15 @@ Progress Bar control, shows current progress value
 */
 int lguiGuiProgressBar( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* textLeft = getTextOrNil( L, 2 );
+	char* textRight = getTextOrNil( L, 3 );
 	float value = luaL_checknumber( L, 4 );
 	float minValue = luaL_checknumber( L, 5 );
 	float maxValue = luaL_checknumber( L, 6 );
 
 	Rectangle textLeftBounds = { 0 };
 	Rectangle textRightBounds = { 0 };
-	lua_pushinteger( L, GuiProgressBar( bounds, luaL_checkstring( L, 2 ), luaL_checkstring( L, 3 ), &value, minValue, maxValue, &textLeftBounds, &textRightBounds ) );
+	lua_pushinteger( L, GuiProgressBar( bounds, textLeft, textRight, &value, minValue, maxValue, &textLeftBounds, &textRightBounds ) );
 	lua_pushnumber( L, value );
 	uluaPushRectangle( L, textLeftBounds );
 	uluaPushRectangle( L, textRightBounds );
@@ -773,7 +800,7 @@ int lguiGuiProgressBar( lua_State* L ) {
 }
 
 /*
-> result = RL.GuiStatusBar( Rectangle bounds, string text )
+> result = RL.GuiStatusBar( Rectangle bounds, string|nil text )
 
 Status Bar control, shows info text
 
@@ -781,14 +808,15 @@ Status Bar control, shows info text
 */
 int lguiGuiStatusBar( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 
-	lua_pushinteger( L, GuiStatusBar( bounds, luaL_checkstring( L, 2 ) ) );
+	lua_pushinteger( L, GuiStatusBar( bounds, text ) );
 
 	return 1;
 }
 
 /*
-> result = RL.GuiDummyRec( Rectangle bounds, string text )
+> result = RL.GuiDummyRec( Rectangle bounds, string|nil text )
 
 Dummy control for placeholders
 
@@ -796,14 +824,15 @@ Dummy control for placeholders
 */
 int lguiGuiDummyRec( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 
-	lua_pushinteger( L, GuiDummyRec( bounds, luaL_checkstring( L, 2 ) ) );
+	lua_pushinteger( L, GuiDummyRec( bounds, text ) );
 
 	return 1;
 }
 
 /*
-> result, mouseCell = RL.GuiGrid( Rectangle bounds, string text, float spacing, int subdivs, Vector2 mouseCell )
+> result, mouseCell = RL.GuiGrid( Rectangle bounds, string|nil text, float spacing, int subdivs, Vector2 mouseCell )
 
 Grid control, returns mouse cell position
 
@@ -811,11 +840,12 @@ Grid control, returns mouse cell position
 */
 int lguiGuiGrid( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 	float spacing = luaL_checknumber( L, 3 );
 	int subdivs = luaL_checkinteger( L, 4 );
 	Vector2 mouseCell = uluaGetVector2( L, 5 );
 
-	lua_pushinteger( L, GuiGrid( bounds, luaL_checkstring( L, 2 ), spacing, subdivs, &mouseCell ) );
+	lua_pushinteger( L, GuiGrid( bounds, text, spacing, subdivs, &mouseCell ) );
 	uluaPushVector2( L, mouseCell );
 
 	return 2;
@@ -844,7 +874,7 @@ int lguiGuiScrollBar( lua_State* L ) {
 */
 
 /*
-> result, scrollIndex, active = RL.GuiListView( Rectangle bounds, string text, int scrollIndex, int active )
+> result, scrollIndex, active = RL.GuiListView( Rectangle bounds, string|nil text, int scrollIndex, int active )
 
 List View control, returns selected list item index
 
@@ -852,10 +882,11 @@ List View control, returns selected list item index
 */
 int lguiGuiListView( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 	int scrollIndex = luaL_checkinteger( L, 3 );
 	int active = luaL_checkinteger( L, 4 );
 
-	lua_pushinteger( L, GuiListView( bounds, luaL_checkstring( L, 2 ), &scrollIndex, &active ) );
+	lua_pushinteger( L, GuiListView( bounds, text, &scrollIndex, &active ) );
 	lua_pushinteger( L, scrollIndex );
 	lua_pushinteger( L, active );
 
@@ -871,14 +902,15 @@ List View with extended parameters
 */
 int lguiGuiListViewEx( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	const char* text = luaL_checkstring( L, 2 );
 	int scrollIndex = luaL_checkinteger( L, 3 );
 	int active = luaL_checkinteger( L, 4 );
 	int focus = luaL_checkinteger( L, 5 );
 
 	int count = 0;
-	const char** text = TextSplit( luaL_checkstring( L, 2 ), ';', &count );
+	const char** textSplits = TextSplit( text, ';', &count );
 
-	lua_pushinteger( L, GuiListViewEx( bounds, text, count, &scrollIndex, &active, &focus ) );
+	lua_pushinteger( L, GuiListViewEx( bounds, textSplits, count, &scrollIndex, &active, &focus ) );
 	lua_pushinteger( L, scrollIndex );
 	lua_pushinteger( L, active );
 	lua_pushinteger( L, focus );
@@ -887,7 +919,7 @@ int lguiGuiListViewEx( lua_State* L ) {
 }
 
 /*
-> result = RL.GuiMessageBox( Rectangle bounds, string title, string message, string buttons )
+> result = RL.GuiMessageBox( Rectangle bounds, string|nil title, string message, string buttons )
 
 Message Box control, displays a message
 
@@ -895,8 +927,11 @@ Message Box control, displays a message
 */
 int lguiGuiMessageBox( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* title = getTextOrNil( L, 2 );
+	const char* message = luaL_checkstring( L, 3 );
+	const char* buttons = luaL_checkstring( L, 4 );
 
-	lua_pushinteger( L, GuiMessageBox( bounds, luaL_checkstring( L, 2 ), luaL_checkstring( L, 3 ), luaL_checkstring( L, 4 ) ) );
+	lua_pushinteger( L, GuiMessageBox( bounds, title, message, buttons ) );
 
 	return 1;
 }
@@ -926,7 +961,7 @@ int lguiGuiTextInputBox( lua_State* L ) {
 }
 
 /*
-> result, color = RL.GuiColorPicker( Rectangle bounds, string text, Color color )
+> result, color = RL.GuiColorPicker( Rectangle bounds, string|nil text, Color color )
 
 Color Picker control (multiple color controls)
 
@@ -934,16 +969,17 @@ Color Picker control (multiple color controls)
 */
 int lguiGuiColorPicker( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 	Color color = uluaGetColor( L, 3 );
 
-	lua_pushinteger( L, GuiColorPicker( bounds, luaL_checkstring( L, 2 ), &color ) );
+	lua_pushinteger( L, GuiColorPicker( bounds, text, &color ) );
 	uluaPushColor( L, color );
 
 	return 2;
 }
 
 /*
-> result, color = RL.GuiColorPanel( Rectangle bounds, string text, Color color )
+> result, color = RL.GuiColorPanel( Rectangle bounds, string|nil text, Color color )
 
 Color Panel control
 
@@ -951,16 +987,17 @@ Color Panel control
 */
 int lguiGuiColorPanel( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 	Color color = uluaGetColor( L, 3 );
 
-	lua_pushinteger( L, GuiColorPanel( bounds, luaL_checkstring( L, 2 ), &color ) );
+	lua_pushinteger( L, GuiColorPanel( bounds, text, &color ) );
 	uluaPushColor( L, color );
 
 	return 2;
 }
 
 /*
-> result, alpha = RL.GuiColorBarAlpha( Rectangle bounds, string text, float alpha )
+> result, alpha = RL.GuiColorBarAlpha( Rectangle bounds, string|nil text, float alpha )
 
 Color Bar Alpha control
 
@@ -968,16 +1005,17 @@ Color Bar Alpha control
 */
 int lguiGuiColorBarAlpha( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 	float alpha = luaL_checknumber( L, 3 );
 
-	lua_pushinteger( L, GuiColorBarAlpha( bounds, luaL_checkstring( L, 2 ), &alpha ) );
+	lua_pushinteger( L, GuiColorBarAlpha( bounds, text, &alpha ) );
 	lua_pushnumber( L, alpha );
 
 	return 2;
 }
 
 /*
-> result, value = RL.GuiColorBarHue( Rectangle bounds, string text, float value )
+> result, value = RL.GuiColorBarHue( Rectangle bounds, string|nil text, float value )
 
 Color Bar Hue control
 
@@ -985,16 +1023,17 @@ Color Bar Hue control
 */
 int lguiGuiColorBarHue( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 	float value = luaL_checknumber( L, 3 );
 
-	lua_pushinteger( L, GuiColorBarHue( bounds, luaL_checkstring( L, 2 ), &value ) );
+	lua_pushinteger( L, GuiColorBarHue( bounds, text, &value ) );
 	lua_pushnumber( L, value );
 
 	return 2;
 }
 
 /*
-> result, colorHsv = RL.GuiColorPickerHSV( Rectangle bounds, string text, Vector3 colorHsv )
+> result, colorHsv = RL.GuiColorPickerHSV( Rectangle bounds, string|nil text, Vector3 colorHsv )
 
 Color Picker control that avoids conversion to RGB on each call (multiple color controls)
 
@@ -1002,16 +1041,17 @@ Color Picker control that avoids conversion to RGB on each call (multiple color
 */
 int lguiGuiColorPickerHSV( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 	Vector3 colorHsv = uluaGetVector3( L, 3 );
 
-	lua_pushinteger( L, GuiColorPickerHSV( bounds, luaL_checkstring( L, 2 ), &colorHsv ) );
+	lua_pushinteger( L, GuiColorPickerHSV( bounds, text, &colorHsv ) );
 	uluaPushVector3( L, colorHsv );
 
 	return 2;
 }
 
 /*
-> result, colorHsv = RL.GuiColorPanelHSV( Rectangle bounds, string text, Vector3 colorHsv )
+> result, colorHsv = RL.GuiColorPanelHSV( Rectangle bounds, string|nil text, Vector3 colorHsv )
 
 Color Panel control that returns HSV color value, used by GuiColorPickerHSV()
 
@@ -1019,9 +1059,10 @@ Color Panel control that returns HSV color value, used by GuiColorPickerHSV()
 */
 int lguiGuiColorPanelHSV( lua_State* L ) {
 	Rectangle bounds = uluaGetRectangle( L, 1 );
+	char* text = getTextOrNil( L, 2 );
 	Vector3 colorHsv = uluaGetVector3( L, 3 );
 
-	lua_pushinteger( L, GuiColorPanelHSV( bounds, luaL_checkstring( L, 2 ), &colorHsv ) );
+	lua_pushinteger( L, GuiColorPanelHSV( bounds, text, &colorHsv ) );
 	uluaPushVector3( L, colorHsv );
 
 	return 2;

src/rmath.c

@@ -20,12 +20,12 @@ int imax( int a, int b ) {
 
 Round float value
 
-- Success return float
+- Success return int
 */
 int lmathRound( lua_State* L ) {
 	float value = luaL_checknumber( L, 1 );
 	
-	lua_pushnumber( L, round( value ) );
+	lua_pushinteger( L, round( value ) );
 
 	return 1;
 }
@@ -1749,7 +1749,7 @@ int lmathQuaternionFromMatrix( lua_State* L ) {
 /*
 > result = RL.QuaternionToMatrix( Quaternion q )
 
-Get a quaternion for a given rotation matrix
+Get a matrix for a given quaternion
 
 - Success return Matrix
 */