TWidgetSet.ExtSelectClipRGN function
Combines the passed Region with the current clipping region.
Declaration
function ExtSelectClipRGN(dc: hdc; rgn: hrgn; Mode: LongInt): Integer
; virtualArguments
dc | |
rgn | The region to combine with. |
Mode | How the regions are combined. |
Function result
The type of the resulting clipping region.
Description
The Mode can be one of:
- RGN_AND
- All points which are in both regions.
- RGN_COPY
- An exact copy of the source region, same as SelectClipRGN.
- RGN_DIFF
- All points which are in the Clipping Region but but not in the Source. (Clip - RGN).
- RGN_OR
- All points which are in either the Clip Region or in the Source. (Clip + RGN).
- RGN_XOR
- All points which are in either the Clip Region or in the Source, but not in both.
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.