beginPath beginShape bezierTo clearRect clipPath clipRect close closePath drawBitmap drawEllipse drawHandle drawLine drawPath drawRect drawTextAt endShape GiSvgCanvas im lineTo moveTo open quadTo restoreClip saveClip setBrush setPen ~GiSvgCanvas

open() bool GiSvgCanvas::open ( const char *  filename, int  width, int  height  ) 这是这个函数的调用关系图: