Tree_ItemHasChildren Method
Description
This method indicates if a tree item has any children.
Parameters
- MyControlReference
- Reference to the control in the form of MyProject_MyForm_MyControl.
- ProjectFile
- String identifying the project as it was passed in LoadProject.
- DialogName
- String identifying the dialog by name.
- ControlName
- String identifying the control by name.
- Key
- String specifying the a unique key in the tree structure identifying the tree node.
- Tree Node Handle specifying the tree node uniquely.
Return Values
Returns the following according to the situation:
- T is the tree item has chidren.
- Nil if the dialog is not found, the control is not found or not visible or the tree item is not found.
AutoLISP Syntax
The recommended convention is passing the control identifier directly:
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(Odcl_Tree_ItemHasChildren MyControlReference [as Reference] Key [as String or Tree Node Handle]) |
An alternative convention is to identify the control by providing the project file, the dialog name and the control name:
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(Odcl_Tree_ItemHasChildren ProjectFile [as String] DialogName [as String] ControlName [as String] Key [as String or Tree Node Handle]) |
Applies For
Example
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; Check if the tree item has children (Setq rValue (Odcl_Tree_ItemHasChildren MyProject_MyForm_MyControl "C_Program Files")) |