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Defines a method used to draw a built-in icon for a specified tree node.
Source position: comctrls.pp line 3592
protected function TCustomTreeView.DrawBuiltinIcon( |
ANode: TTreeNode; |
ARect: TRect |
):TSize; virtual; |
ANode |
|
Tree node used to select an appropriate icon image. |
ARect |
|
Rectangle where the icon image was drawn. |
TSize instance with the dimensions for the built-in image.
DrawBuiltInIcon is a virtual method which is used to draw the a built-in icon for the specified tree node. A built-in icon is provided by the operating system or platform when an image list has not been provided or populated in the Images property.
The return value contains a TSize instance with the dimensions for the built-in image. In TCustomTreeView, the method returns an empty TSize instance (CX and CY are both set to 0). The method must be overridden in a descendent class (like TShellTreeView) to use the icon(s) appropriate for the implementation.
| Version 3.2 | Generated 2024-02-25 | Home |