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Ensures that the handle for the canvas Region is valid.
Source position: graphics.pp line 1081
protected procedure TCanvas.CreateRegion; virtual; |
CreateRegion is a procedure used to ensure that the handle for the rectangular Region in the canvas is valid.
CreateRegion calls SelectObject to the get the handle for the Region, and saves a local copy for access in the class instance. Canvas state flags are updated to indicates that the handle for the Region is valid.
CreateRegion is declared as a virtual method, and may be overridden in descendant classes.
| Remark: | CreateRegion is not used in the current LCL implementation. |
| Version 3.2 | Generated 2024-02-25 | Home |