TdxTreeViewNodeCompareProc Type

A callback reference to a function that compares two tree nodes.

Declaration

TdxTreeViewNodeCompareProc = function(ANode1: TdxTreeViewNode; ANode2: TdxTreeViewNode; AData: TdxNativeInt): Integer;

Parameters

Name	Type	Description
ANode1	TdxTreeViewNode	The first target tree node.
ANode2	TdxTreeViewNode	The second target tree node.
AData	TdxNativeInt	Specifies a pointer to additional data for the custom comparison routine.

Referenced Class

Type	Description
Integer	A result of the comparison.

Remarks

The following table lists the values that a comparison function can return:

Value	Description
A negative integer value	ANode1 is positioned above ANode2.
0	ANode1 is “equal” to ANode2. Both nodes retain their positions.
A positive integer value	ANode1 is positioned below ANode2.

The Tree View’s CustomSort function references the TdxTreeViewNodeCompareProc type.