C語言創建windows窗口實例

2020-01-26 15:07:13

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耐得住寂寞，禁得起誘惑，這就是程序人生

步驟：
1.在WinMain中定義各種變量
2.注冊窗口類RegisterClass
3.創建窗口CreateWindow
4.顯示窗口和更新窗口

ShowWindow (hwnd, iCmdShow) ;
     UpdateWindow (hwnd) ;

5.消息循環

復制代碼代碼如下:

while (GetMessage (&msg, NULL, 0, 0))
     {
          TranslateMessage (&msg) ;
          DispatchMessage (&msg) ;
     }

完整代碼：

復制代碼代碼如下:

#include <windows.h>  
  
LRESULT CALLBACK MyProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam);  
  
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd )  
{  
     MSG      msg;  
     HWND     hwnd;  
     static TCHAR szAppName[] = "hl";  
  
     WNDCLASS wndclass;  
     wndclass.style        = CS_HREDRAW | CS_VREDRAW;  
     wndclass.cbClsExtra   = 0;  
     wndclass.cbWndExtra   = 0;  
     wndclass.lpfnWndProc  = MyProc;  
     wndclass.hInstance    = hInstance;  
     wndclass.hIcon        = LoadIcon(NULL,IDI_APPLICATION);  
     wndclass.hCursor      = LoadCursor(NULL,IDC_ARROW);  
     wndclass.hbrBackground= (HBRUSH)GetStockObject(WHITE_BRUSH);  
     wndclass.lpszMenuName = NULL;  
     wndclass.lpszClassName= szAppName;  
  
     if(!RegisterClass(&wndclass))  
     {  
          MessageBox(NULL,TEXT("error"),TEXT("title"),MB_ICONERROR);  
          return 0;  
     }  
     hwnd = CreateWindow(szAppName,  
                              TEXT("Hello"),  
                              WS_OVERLAPPEDWINDOW,  
                              CW_USEDEFAULT,  
                              CW_USEDEFAULT,  
                              CW_USEDEFAULT,  
                              CW_USEDEFAULT,  
                              NULL,  
                              NULL,  
                              hInstance,  
                              NULL  
                              );  
     ShowWindow(hwnd,nShowCmd);  
     UpdateWindow(hwnd);  
  
     while(GetMessage(&msg,hwnd,0,0))  
     {  
          TranslateMessage(&msg);  
          DispatchMessage(&msg);  
     }  
     return msg.wParam;  
}  
  
LRESULT CALLBACK MyProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam)  
{  
  
     switch(message)  
     {  
     case WM_DESTROY:  
          PostQuitMessage(0);  
          return 0;  
     }  
     return DefWindowProc(hwnd,message,wParam,lParam);  
}  