TcxRegionOperation Enum

Enumerates combine operations applicable to window regions.

Declaration

delphi

TcxRegionOperation = (
    roSet,
    roAdd,
    roSubtract,
    roIntersect
);

Options include:

Value	Description
roSet	Replaces the current region with a specified source region. This value maps to the RGN_COPY constant.
roAdd	Joins two window regions. This value maps to the RGN_OR constant.
roSubtract	Shrinks the current window region down to a difference between the current and source regions. This value maps to the RGN_DIFF constant.
roIntersect	Shrinks the current window region down to an intersection between the current and source regions. This value maps to the RGN_ADD constant.

The TcxCanvas.SetClipRegion and TcxRegion.Combine procedures accept a TcxRegionOperation value.