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Event handler signalled to get the ordinal position for the image displayed for a selected node on the tree view control.
Source position: comctrls.pp line 3664
protected property TCustomTreeView.OnGetSelectedIndex : TTVExpandedEvent |
OnGetSelectedIndex is a TTVExpandedEvent property with the event handler signalled to get the index position for the selected image on a tree view node. The index is an ordinal position in the Images assigned for the control.
OnGetSelectedIndex is signalled (when assigned) from the OnGetSelectedIndex method, and occurs when a tree node is painted to the tree view control. It allows a value assigned to the SelectedIndex property in the tree node to be overridden, or set to a default value. OnGetSelectedIndex is not signalled if Images has not been assigned (is Nil).
Arguments to the event handler include:
The handler routine should select and assign a value to the SelectedIndex property in Node; there is no way to provide the value as a separate argument or return value.
Use OnGetImageIndex to get the image index for the a node which is not selected on the tree view control.
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Image list which holds icons for the tree nodes in Items. |
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Renders the specified tree node to the canvas for the control. |
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Implements the Paint method for the control. |
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Event handler signalled to get the ordinal position for the image displayed on a tree node. |
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Ordinal position for the image displayed when the tree node is Selected. |
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TTVExpandedEvent - generic event handling method for a Tree Node that has been expanded. |
| Version 3.2 | Generated 2024-02-25 | Home |