最简单的winMain程序

最新推荐文章于 2023-05-31 23:05:31 发布

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最新推荐文章于 2023-05-31 23:05:31 发布

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本文介绍了一个简单的Windows应用程序，该程序使用C语言在Windows98环境下显示“Hello,Windows98!”的消息。程序通过注册窗口类、创建窗口、消息循环等步骤实现。

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/*------------------------------------------------------------------------ HELLOWIN.C -- Displays "Hello, Windows 98!" in client area (c) Charles Petzold, 1998-----------------------------------------------------------------------*/#include <windows.h>LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ; int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,PSTR szCmdLine,int iCmdShow) { static TCHAR szAppName[] = TEXT ("HelloWin") ; HWND hwnd ; MSG msg ; WNDCLASS wndclass ;wndclass.style = CS_HREDRAW | CS_VREDRAW ;wndclass.lpfnWndProc = WndProc ; wndclass.cbClsExtra = 0 ; wndclass.cbWndExtra = 0 ; wndclass.hInstance = hInstance ; wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION) ;wndclass.hCursor = LoadCursor (NULL, IDC_APPSTARTING) ;wndclass.hbrBackground= (HBRUSH) GetStockObject (WHITE_BRUSH) ;wndclass.lpszMenuName = NULL ; wndclass.lpszClassName= szAppName ; if (!RegisterClass (&wndclass)) { MessageBox ( NULL, TEXT ("This program requires Windows NT!"), szAppName, MB_ICONERROR) ; return 0 ; } hwnd = CreateWindow( szAppName, // window class name TEXT ("The Hello Program"), // window caption WS_OVERLAPPEDWINDOW, // window style CW_USEDEFAULT,// initial x position CW_USEDEFAULT,// initial y position CW_USEDEFAULT,// initial x size CW_USEDEFAULT,// initial y size NULL, // parent window handle NULL, // window menu handle hInstance, // program instance handle NULL) ; // creation parameters ShowWindow (hwnd, iCmdShow) ; UpdateWindow (hwnd) ; while (GetMessage (&msg, NULL, 0, 0)) { TranslateMessage (&msg) ; DispatchMessage (&msg) ; } return msg.wParam ; }LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam){ HDC hdc; PAINTSTRUCT ps; RECT rect; switch (message) { case WM_CREATE: PlaySound (TEXT ("C:/bung.wav"), NULL, SND_FILENAME | SND_ASYNC) ; return 0 ;case WM_PAINT: hdc = BeginPaint (hwnd, &ps) ;GetClientRect (hwnd, &rect) ;DrawText (hdc, TEXT ("Hello, Windows 98!"), -1, &rect,DT_SINGLELINE | DT_CENTER | DT_VCENTER) ; EndPaint (hwnd, &ps) ; return 0 ; case WM_DESTROY: PostQuitMessage (0) ; return 0 ; }return DefWindowProc (hwnd, message, wParam, lParam) ;}

这个程序描述了一个windows的整体架构。WinMain（）函数，WinPro（）窗口函数及消息循环。