beginPath beginShape bezierTo clearCachedBitmap clearRect clipPath clipRect closePath drawBitmap drawEllipse drawHandle drawLine drawPath drawRect drawTextAt drawTextAt endShape lineTo moveTo quadTo restoreClip saveClip setBrush setPen ~GiCanvas

clearCachedBitmap() virtual void GiCanvas::clearCachedBitmap ( bool  clearAll = false ) virtual Clear the cached bitmap for re-drawing on desktop PC. 被 GiGdipCanvas 重载. 这是这个函数的调用关系图: