TCustomTeePanelExtended.BackImageTransp
TCustomTeePanelExtended
property BackImageTransp: Boolean;
Unit
TeeProcs
Description
The BackImageTransp property is used when the BackImage property of a Chart is not empty.
When BackImageTransp property is false (the default), the BackImage is displayed in a way that it obscures the chart background.
When BackImageTransp is set to true, the first right-lower pixel in BackImage is used as the "transparent" color. (This is exactly what VCL TBitmap does), so all pixels with the same color in BackImage will not be copied to the background chart.