_beginPaint _impl beginPaint beginPaintBuffered beginPath bezierTo clearCachedBitmap clearRect clearWindow clipPath clipRect closePath drawBitmap drawCachedBitmap drawCachedBitmap2 drawEllipse drawHandle drawLine drawPath drawRect drawTextAt endPaint getEncoder GiGdipCanvas hasCachedBitmap isBufferedDrawing lineTo moveTo quadTo restoreClip save saveCachedBitmap saveClip setBrush setPen thumbnailImage ~GiGdipCanvas

drawRect() void GiGdipCanvas::drawRect ( float  x, float  y, float  w, float  h, bool  stroke, bool  fill  ) virtual Fill or stroke `rect' (w>0, h>0) with the current color. 实现了 GiCanvas.