Canvas.EraseBackground
From Xojo Documentation
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This item was deprecated in version 2019r2. |
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Supported Platforms Project Types: Desktop Platforms: Windows |
Property (As Boolean )
aCanvas.EraseBackground = newBooleanValue
or
BooleanValue = aCanvas.EraseBackground
New in 2005r1
Supported for all project types and targets.
or
BooleanValue = aCanvas.EraseBackground
New in 2005r1
Supported for all project types and targets.
Indicates whether the entire Canvas is erased when doing any drawing operations or resizing.
Notes
It defaults to True for backwards compatibility.
This property is only used on Windows. Its setting has no effect on macOS or Linux.
If you set DoubleBuffer to True, then you should set EraseBackground to False. Otherwise, it will cause the Canvas to flicker.
Example
This code in the Open event handler of a Canvas enables double-buffering and disables EraseBackground: