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Reference for unit 'Controls' (#lcl)

TGraphicControl.Canvas

A clipped window into the parent Canvas.

Declaration

Source position: controls.pp line 2472

public property TGraphicControl.Canvas : TCanvas read FCanvas;

Don't paint on the entire Canvas! Instead use the dimensions of the TGraphicControl stored in the ClientRect.

If you ask for the Canvas.Width or Canvas.Height, you are actually getting the Canvas dimensions from the Parent control.

TControl.ClientRect		Size of the client area for the control.
TControl.ClientWidth		The width of the client area for the control.
TControl.ClientHeight		The height for the client area on the control.
TControl.BoundsRect		The Top, Left and Bottom, Right for the control, in client coordinates.
TCanvas		Implements a drawing surface for a visual control or bitmap image.

Version 3.2

Generated 2024-02-25