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author | Indrajith K L | 2022-12-03 17:00:20 +0530 |
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committer | Indrajith K L | 2022-12-03 17:00:20 +0530 |
commit | f5c4671bfbad96bf346bd7e9a21fc4317b4959df (patch) | |
tree | 2764fc62da58f2ba8da7ed341643fc359873142f /tcc/examples/hello_win.c | |
download | cli-tools-windows-master.tar.gz cli-tools-windows-master.tar.bz2 cli-tools-windows-master.zip |
Diffstat (limited to 'tcc/examples/hello_win.c')
-rw-r--r-- | tcc/examples/hello_win.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/tcc/examples/hello_win.c b/tcc/examples/hello_win.c new file mode 100644 index 0000000..96546e4 --- /dev/null +++ b/tcc/examples/hello_win.c @@ -0,0 +1,163 @@ +//+--------------------------------------------------------------------------- +// +// HELLO_WIN.C - Windows GUI 'Hello World!' Example +// +//+--------------------------------------------------------------------------- + +#include <windows.h> + +#define APPNAME "HELLO_WIN" + +char szAppName[] = APPNAME; // The name of this application +char szTitle[] = APPNAME; // The title bar text +const char *pWindowText; + +void CenterWindow(HWND hWnd); + +//+--------------------------------------------------------------------------- +// +// Function: WndProc +// +// Synopsis: very unusual type of function - gets called by system to +// process windows messages. +// +// Arguments: same as always. +//---------------------------------------------------------------------------- + +LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) +{ + switch (message) { + + // ----------------------- first and last + case WM_CREATE: + CenterWindow(hwnd); + break; + + case WM_DESTROY: + PostQuitMessage(0); + break; + + // ----------------------- get out of it... + case WM_RBUTTONUP: + DestroyWindow(hwnd); + break; + + case WM_KEYDOWN: + if (VK_ESCAPE == wParam) + DestroyWindow(hwnd); + break; + + // ----------------------- display our minimal info + case WM_PAINT: + { + PAINTSTRUCT ps; + HDC hdc; + RECT rc; + hdc = BeginPaint(hwnd, &ps); + + GetClientRect(hwnd, &rc); + SetTextColor(hdc, RGB(240,240,96)); + SetBkMode(hdc, TRANSPARENT); + DrawText(hdc, pWindowText, -1, &rc, DT_CENTER|DT_SINGLELINE|DT_VCENTER); + + EndPaint(hwnd, &ps); + break; + } + + // ----------------------- let windows do all other stuff + default: + return DefWindowProc(hwnd, message, wParam, lParam); + } + return 0; +} + +//+--------------------------------------------------------------------------- +// +// Function: WinMain +// +// Synopsis: standard entrypoint for GUI Win32 apps +// +//---------------------------------------------------------------------------- +int APIENTRY WinMain( + HINSTANCE hInstance, + HINSTANCE hPrevInstance, + LPSTR lpCmdLine, + int nCmdShow + ) +{ + MSG msg; + WNDCLASS wc; + HWND hwnd; + + pWindowText = lpCmdLine[0] ? lpCmdLine : "Hello Windows!"; + + // Fill in window class structure with parameters that describe + // the main window. + + ZeroMemory(&wc, sizeof wc); + wc.hInstance = hInstance; + wc.lpszClassName = szAppName; + wc.lpfnWndProc = (WNDPROC)WndProc; + wc.style = CS_DBLCLKS|CS_VREDRAW|CS_HREDRAW; + wc.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH); + wc.hIcon = LoadIcon(NULL, IDI_APPLICATION); + wc.hCursor = LoadCursor(NULL, IDC_ARROW); + + if (FALSE == RegisterClass(&wc)) + return 0; + + // create the browser + hwnd = CreateWindow( + szAppName, + szTitle, + WS_OVERLAPPEDWINDOW|WS_VISIBLE, + CW_USEDEFAULT, + CW_USEDEFAULT, + 360,//CW_USEDEFAULT, + 240,//CW_USEDEFAULT, + 0, + 0, + hInstance, + 0); + + if (NULL == hwnd) + return 0; + + // Main message loop: + while (GetMessage(&msg, NULL, 0, 0) > 0) { + TranslateMessage(&msg); + DispatchMessage(&msg); + } + + return msg.wParam; +} + +//+--------------------------------------------------------------------------- + +//+--------------------------------------------------------------------------- + +void CenterWindow(HWND hwnd_self) +{ + HWND hwnd_parent; + RECT rw_self, rc_parent, rw_parent; + int xpos, ypos; + + hwnd_parent = GetParent(hwnd_self); + if (NULL == hwnd_parent) + hwnd_parent = GetDesktopWindow(); + + GetWindowRect(hwnd_parent, &rw_parent); + GetClientRect(hwnd_parent, &rc_parent); + GetWindowRect(hwnd_self, &rw_self); + + xpos = rw_parent.left + (rc_parent.right + rw_self.left - rw_self.right) / 2; + ypos = rw_parent.top + (rc_parent.bottom + rw_self.top - rw_self.bottom) / 2; + + SetWindowPos( + hwnd_self, NULL, + xpos, ypos, 0, 0, + SWP_NOSIZE|SWP_NOZORDER|SWP_NOACTIVATE + ); +} + +//+--------------------------------------------------------------------------- |