OPENFILENAME弹出的窗口如何设置为模态的，即始终保持在最前面，急！

OPENFILENAME弹出的窗口如何设置为模态的，即始终保持在最前面，急！急求！谢谢，没有C币，可以加微信发红包

hwndOwner 指定你的父窗口

  OPENFILENAME ofn; 

 ofn.lStructSize = sizeof (OPENFILENAME); 
 ofn.hwndOwner = hWndOwner; 
 ofn.hInstance = NULL; 
 ofn.lpstrFilter = "All files (*. *) \0*.*\0\0"; 
 ofn.lpstrCustomFilter = NULL; 
 ofn.nMaxCustFilter = 0; 
 ofn.nFilterIndex = 0; 
 ofn.nMaxFile = MAX_PATH; 
 ofn.nMaxFileTitle = MAX_PATH; 
 ofn.lpstrInitialDir = NULL; 
 ofn.lpstrTitle = NULL; 
 ofn. Flags = OFN_CREATEPROMPT|OFN_EXPLORER|OFN_HIDEREADONLY; 
 ofn.nFileOffset = 0; 
 ofn.nFileExtension = 0; 
 ofn.lpstrDefExt = NULL; 
 ofn.lCustData = 0; 
 ofn.lpfnHook = NULL; 
 ofn.lpTemplateName = NULL; 

 GetOpenFileName (&ofn);