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Direct2D (20) : 图层之 TD2D1LayerParameters.opacityBrush (为图层指定蒙版画刷)

Direct2D (20) : 图层之 TD2D1LayerParameters.opacityBrush (为图层指定蒙版画刷) uses Direct2D, D2D1; procedure TForm1.FormPaint(Sender: TObject); var cvs: TDirect2DCanvas; iLayer: ID2D1Layer; rLayerParameters: TD2D1LayerParameters; wic: TWICImage

Direct2D (19) : 图层之 TD2D1LayerParameters.geometricMask (使用几何图形剪裁图层)

Direct2D (19) : 图层之 TD2D1LayerParameters.geometricMask (使用几何图形剪裁图层) uses Direct2D, D2D1; procedure TForm1.FormPaint(Sender: TObject); var cvs: TDirect2DCanvas; iLayer: ID2D1Layer; rLayerParameters: TD2D1LayerParameters; wic: TWICIm

Direct2D (18) : 图层之 TD2D1LayerParameters.contentBounds (图层的有效范围)

Direct2D (18) : 图层之 TD2D1LayerParameters.contentBounds (图层的有效范围) {相关方法} TDirect2DCanvas.RenderTarget.CreateLayer(); //建立层 TDirect2DCanvas.RenderTarget.PushLayer(); //开始层；层的功能及效果取决于它的 TD2D1LayerParameters 结构参数 TDirect