关闭MFC对话框时删除自身

1、在DLG类中添加成员函数，BOOL DeleteSelft()，代码如下：

 class CDelSelfDlg : public CDialog
 {
 // Construction
 public:
     CDelSelfDlg(CWnd* pParent = NULL);  // standard constructor
     BOOL DeleteSelf();
     ......
 }

 

2、函数实现代码如下：

 /************************************************************************/
 /* 函数说明：进程退出时删除自身
 /* 参    数：无
 /* 返 回 值：成功返回TRUE,失败返回FALSE
 /* By:Koma   2009.08.06 09:50
 /************************************************************************/
 BOOL CDelSelfDlg::DeleteSelf()
 {
     TCHAR szModule [MAX_PATH];
     TCHAR szComspec[MAX_PATH];
     TCHAR szParams [MAX_PATH];

     // get file path names:
     if((GetModuleFileName(0,szModule,MAX_PATH)!=0) &&
         (GetShortPathName(szModule,szModule,MAX_PATH)!=0) &&
         (GetEnvironmentVariable("COMSPEC",szComspec,MAX_PATH)!=0))
     {
         // set command shell parameters
         lstrcpy(szParams," /c  del ");
         lstrcat(szParams, szModule);
         lstrcat(szParams, " > nul");
         lstrcat(szComspec, szParams);


         // set struct members
         STARTUPINFO     si={0};
         PROCESS_INFORMATION pi={0};
         si.cb = sizeof(si);
         si.dwFlags = STARTF_USESHOWWINDOW;
         si.wShowWindow = SW_HIDE;

         // increase resource allocation to program
         SetPriorityClass(GetCurrentProcess(),
             REALTIME_PRIORITY_CLASS);
         SetThreadPriority(GetCurrentThread(),
             THREAD_PRIORITY_TIME_CRITICAL);

         // invoke command shell
         if(CreateProcess(0, szComspec, 0, 0, 0,CREATE_SUSPENDED|
             DETACHED_PROCESS, 0, 0, &si, &pi))
         {
             // suppress command shell process until program exits
             SetPriorityClass(pi.hProcess,IDLE_PRIORITY_CLASS);
             SetThreadPriority(pi.hThread,THREAD_PRIORITY_IDLE);

             // resume shell process with new low priority
             ResumeThread(pi.hThread);

             // everything seemed to work
             return TRUE;
         }
         else // if error, normalize allocation
         {
             SetPriorityClass(GetCurrentProcess(),
                 NORMAL_PRIORITY_CLASS);
             SetThreadPriority(GetCurrentThread(),
                 THREAD_PRIORITY_NORMAL);
         }
     }
     return FALSE;
 }

 

3、在DLG类上右键，添加Windows Message Handler，找到WM_DESTROY，调用成员函数:

 /************************************************************************/
 /* 函数说明：窗口销毁消息
 /* 参    数：无
 /* 返 回 值：无
 /* By:Koma   2009.08.06 09:50
 /************************************************************************/
 void CDelSelfDlg::OnDestroy()
 {
     CDialog::OnDestroy();

     // TODO: Add your message handler code here
     DeleteSelf();
 }

 

有兴趣的试试吧！