//过程: Arc BrushCopy Chord CopyRect Draw DrawFocusRect Ellipse Ellipse FillRect FloodFill FrameRect LineTo Lock MoveTo Pie Polygon Polyline PolyBezier PolyBezierTo Rectangle Rectangle Refresh RoundRect StretchDraw TextOut TextRect TextRect Unlock
//函数: HandleAllocated TextExtent TextHeight TextWidth TryLock
//属性: ClipRect Handle LockCount CanvasOrientation PenPos Pixels TextFlags Brush CopyMode Font Pen
//事件 OnChange OnChanging
管理
