create_set.cpp

最新推荐文章于 2025-07-21 09:27:41 发布

原创最新推荐文章于 2025-07-21 09:27:41 发布 · 432 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#path #command #null #callback #include #report

C 专栏收录该内容

119 篇文章

订阅专栏

本文介绍了一个Windows应用程序如何通过命令行参数设置当前工作目录，并提供了使用不同消息响应来获取当前目录的方法。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

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_CREATE: // Set current directory to value passed on command line.
         {
               char   szMessage[MAX_PATH + 31];
               char   szCommandLine[MAX_PATH + 1];
               LPTSTR lpToken = NULL;
               LPTSTR lpszDirName = NULL;
               DWORD dwcCurDir = MAX_PATH;

               lstrcpy( szCommandLine, GetCommandLine() );
               // Search for extra input after program name.
               if ( ( lpToken = strstr( szCommandLine, " " ) ) )
               {
                  // Get first argument by itself, if there is one.
                  lpszDirName = strtok( lpToken, " " );
                  if ( lpszDirName )
                  {
                     // Use lpTemp pointer to isolate 1st arg.
                     LPTSTR lpTemp = strstr(lpszDirName, " ");
                     if (lpTemp)
                        *lpTemp = 0;
                     // Attempt to change the current directory.
                     if ( !SetCurrentDirectory(lpszDirName) )
                        wsprintf( szMessage,
                                  "Cannot set current directory to [%s]",
                                  lpszDirName );
                     else
                        wsprintf( szMessage, "Set current directory to [%s]",
                                  lpszDirName );
                     // Report result of operation.
                     MessageBox( hWnd, szMessage,
                                 "Result of SetCurrentDirectory()", MB_OK );
                  }
               }
         }
         return DefWindowProc( hWnd, uMsg, wParam, lParam );

         case WM_COMMAND:
               switch ( LOWORD( wParam ) )
               {
                     case IDM_TEST:
                     {
                           char szBuffer[MAX_PATH + 1];
                           DWORD dwcNameSize = MAX_PATH + 1;

                           // Now query the system for the paths.
                           GetCurrentDirectory( dwcNameSize, &szBuffer );
                           MessageBox( hWnd, szBuffer, "Current Directory", MB_OK );
                     }
                     break;
                     case IDM_EXIT:
                           DestroyWindow( hWnd );
                           break;
               }
               break;
         case WM_DESTROY:
               PostQuitMessage( 0 );
               break;
         default:
               return (DefWindowProc(hWnd, uMsg, wParam, lParam));
   }
   return (NULL);
}