本程序从CWnd派生出CGfxOutBarCtrl等若干类，用于实现Outlook 98中的条形控件-This procedure introduced a function BitmapToRegion (), used to convert a bitmap region. It scans the contents of the bitmap to find non-transparent pixels of the contin

通过图片的形状来实现不规则图形，实现不规则的有效区-accroding the bitmap to decision the sharp

creates region from bitmap