API -> CreateRectRgn [ Library : gdi32.dll, Category : Regions ] [C#, VB, VB.net]

CreateRectRgn

Library : gdi32.dll Category : Regions

Api Example(s)
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A window that's star-shaped, circular or tank-shaped
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WindowPicker - Pick any window using mouse and highlight window region

API Description :

The CreateRectRgn function creates a rectangular region.

VB Declaration :

Show Multiline Public Private

Declare Function CreateRectRgn Lib "gdi32" Alias "CreateRectRgn" (ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long

Parameters :

· nLeftRect
Specifies the x-coordinate of the upper-left corner of the region.

· nTopRect
Specifies the y-coordinate of the upper-left corner of the region.

· nRightRect
Specifies the x-coordinate of the lower-right corner of the region.

· nBo

Return :

If the function succeeds, the return value is the handle to the region. 

If the function fails, the return value is NULL.

OS Requirement :

Requires Windows NT 3.1 or later
Requires Windows 95 or later

Dotnet Replacement :