Directx 打开文件框

   OPENFILENAME ofn;
   TCHAR szFile[MAX_PATH];

   ZeroMemory(&ofn,sizeof(ofn));
   ofn.lStructSize = sizeof(ofn);
   ofn.hwndOwner = DXUTGetHWND();
   ofn.lpstrFile = szFile;

   ofn.lpstrFile[0] = L'/0';
   ofn.nMaxFile = sizeof(szFile);
   ofn.lpstrFilter = L"png文件(*.png)/0*.png/0";
   ofn.nFilterIndex = 1;
   ofn.lpstrFileTitle = NULL;
   ofn.nMaxFileTitle = 0;
   ofn.lpstrInitialDir = NULL;
   ofn.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;

   if ( GetOpenFileName(&ofn) )
   {
    g_FilePath = ofn.lpstrFile;
    InitD3D(g_FilePath);
   }