_drawPolygon _xf beginPaint beginShape calcPenColor calcPenWidth copy drawArc drawArc3P drawArrayHead drawBeeline drawBeziers drawBeziers drawBSplines drawCircle drawEllipse drawEllipse drawHandle drawHermiteSplines drawLine drawLines drawPath drawPath_ drawPathWithArrayHead drawPie drawPolygon drawQuadSplines drawRayline drawRect drawRoundRect drawTextAt drawTextAt endPaint endShape fromHandle getBkColor getCanvas getClipBox getClipModel getClipWorld GiGraphics GiGraphics GiGraphics isDrawing isGrayMode isPrint isStopping m_impl operator= rawBeginPath rawBeziers rawBezierTo rawClosePath rawEllipse rawEndPath rawImage rawLine rawLines rawLineTo rawMoveTo rawPolygon rawQuadTo rawRect rawText setBkColor setBrush setClipBox setClipWorld setGrayMode setMaxPenWidth setPen setPenWidthFactor setPhaseEnabled stopDrawing toHandle xf ~GiGraphics

setClipWorld() bool GiGraphics::setClipWorld ( const Box2d &  rectWorld ) 设置剪裁框，世界坐标 新剪裁框将会和原始剪裁框相叠加求交，所以函数可能返回失败。 失败时不改变图形系统内部变量和设备描述表的剪裁框， 因此在失败时不要进行相应绘图操作，否则处于错误的剪裁框中。 只有正处于绘图状态时，该函数的返回值才有效。 参数 [in] rectWorld 世界坐标矩形 返回 是否成功设置剪裁框，没有处于绘图状态中或计算出的剪裁框为空时失败 函数调用图: 这是这个函数的调用关系图: