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Reference for unit 'Graphics' (#lcl)

TRegion.AddRectangle

Convenience routine to add a rectangle to the region.

Declaration

Source position: graphics.pp line 782

public procedure TRegion.AddRectangle(

X1: Integer;

Y1: Integer;

X2: Integer;

Y2: Integer

);

Arguments

`X1`		Horizontal coordinate for one corner of the rectangular area.
`Y1`		Vertical coordinate for one corner of the rectangular area.
`X2`		Horizontal coordinate for the opposing corner of the rectangular area.
`Y2`		Vertical coordinate for the opposing corner of the rectangular area.

Description

Gets a handle for the rectangular defined by the opposing corners with the X1, Y1, X2, and Y2 coordinates. The new region handle is OR-ed with the existing handle for the region.

Calls ReferenceNeeded to ensure that the handle for the region has been allocated.

Discards the new region handle by calling DeleteObject.

Version 4.0

Generated 2025-05-03

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