Win32 实现 MFC CFileDialog 对话框

void CWriteWnd::OpenFileDialog()
{
    OPENFILENAME ofn;      
    TCHAR szFile[MAX_PATH] = _T("");

    ZeroMemory(&ofn, sizeof(ofn));  
    ofn.lStructSize = sizeof(ofn);
    ofn.hwndOwner   = *this;
    ofn.lpstrFile   = szFile;   
    ofn.nMaxFile    = sizeof(szFile);  
    ofn.lpstrFilter = NULL;
    ofn.nFilterIndex    = 1;  
    ofn.lpstrFileTitle  = NULL;  
    ofn.nMaxFileTitle   = 0;  
    ofn.lpstrInitialDir = NULL;  
    ofn.Flags = OFN_EXPLORER | OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;

    GetOpenFileName(&ofn);//如果用户指定了一个文件名且点击OK按钮，返回值为非零值。如果用户取消或关闭Save对话框或错误出现，返回值为零。
    if (GetOpenFileName(&ofn))  
    {
        //std::vector<wstring> vctString(1, szFile);//保存添加文件的路径
    }
   else
   {
       DWORD dwError = NOERROR;
       dwError = CommDlgExtendedError();
   }
}

注:The error codes returned by CommDlgExtendedError are defined in the Cderr.h file.