TTreeNodes.ClearMultiSelection procedure
Clears the nodes in a multi-selection and optionally the selected node on the tree view control.
Declaration
procedure ClearMultiSelection(ClearSelected: Boolean=False)Arguments
ClearSelected | True to clear the Selected property on the tree view control. |
Description
ClearMultiSelection is a method used to remove the internal node
references used for a multi-selection range in the container. Each node in the
range sets its MultiSelected property to
False to remove it from the
selection range. The GetNextMultiSelected method for the tree node is called
to get the next node in the multi-selection. The process is repeated until
there are no more nodes with their MultiSelected properties enabled.
The ClearSelected argument indicates whether the Selected node in the tree view control is cleared. When set to True, the Selected property in the Owner is set to Nil. The default value for the argument is False.
Updates to the multi-selection range are enclosed by calls to the LockSelectionChangeEvent and UnlockSelectionChangeEvent methods in the Owner control (when assigned). This prevents selection change events on the tree view control while the method is active.
See also
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.