//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
来源：oschina
链接：https://my.oschina.net/u/4340310/blog/4407170