void CBbView::OnPicture() { CString filename; CString defaultfilename=""; CString filepath; CString fileextention;//文件擴(kuò)展名 CString filter;//文件過濾 filter="位圖文件(*.bmp)|*.bmp|JPG文件(*.jpg)|*.jpg|所有文件(*.*)|*.*||"; fileextention=".bmp";