show_windows.cpp

最新推荐文章于 2025-08-23 23:32:10 发布

CCodes

最新推荐文章于 2025-08-23 23:32:10 发布

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分类专栏： S 文章标签： callback path include command windows system

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本文提供了一个使用 C 语言编写的示例代码片段，展示了如何通过 Windows API 函数 GetWindowsDirectory 和 GetSystemDirectory 获取 Windows 目录和系统目录，并将其显示在窗口中。

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name="google_ads_frame" marginwidth="0" marginheight="0" src="http://pagead2.googlesyndication.com/pagead/ads?client=ca-pub-5572165936844014&dt=1194442938015&lmt=1194190197&format=336x280_as&output=html&correlator=1194442937843&url=file%3A%2F%2F%2FC%3A%2FDocuments%2520and%2520Settings%2Flhh1%2F%E6%A1%8C%E9%9D%A2%2FCLanguage.htm&color_bg=FFFFFF&color_text=000000&color_link=000000&color_url=FFFFFF&color_border=FFFFFF&ad_type=text&ga_vid=583001034.1194442938&ga_sid=1194442938&ga_hid=1942779085&flash=9&u_h=768&u_w=1024&u_ah=740&u_aw=1024&u_cd=32&u_tz=480&u_java=true" frameborder="0" width="336" scrolling="no" height="280" allowtransparency="allowtransparency"> #include <genstub.c>

LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
   switch (uMsg)
   {
         case WM_COMMAND:
               switch ( LOWORD( wParam ) )
               {
                     case IDM_TEST:
                     {
                           char szBuffer[MAX_PATH + 21];
                           DWORD dwcNameSize = MAX_PATH + 1;
                           HDC hDC = GetDC( hWnd );

                           lstrcpy( szBuffer, "Windows Directory: " );
                           GetWindowsDirectory( &szBuffer[19], (UINT) dwcNameSize );
                           TextOut( hDC, 0, 20, szBuffer, strlen( szBuffer ) );
                           lstrcpy( szBuffer, "System Directory: " );
                           GetSystemDirectory( &szBuffer[18], (UINT) dwcNameSize );
                           TextOut( hDC, 0, 40, szBuffer, strlen( szBuffer ) );

                           ReleaseDC( hWnd, hDC );
                     }
                     break;
                     case IDM_EXIT:
                           DestroyWindow( hWnd );
                           break;
               }
               break;
         case WM_DESTROY:
               PostQuitMessage( 0 );
               break;
         default:
               return (DefWindowProc(hWnd, uMsg, wParam, lParam));
   }
   return (NULL);
}