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    TObjectSortCompare

    Custom sort callback handler.

    Declaration

    Source position: avl_tree.pp line 47

    type
  TObjectSortCompare = function(Tree: TAVLTree; Data1: Pointer; 
                              Data2: Pointer) : Integer of object;

    Arguments

    Name Description
    Tree Tree that is comparing objects.
    Data1 First object.
    Data2 Second object.

    Function result

    one of -1, 0 or 1 depending on the comparison of data1 and data2.

    Description

    TObjectSortCompare is the prototype for the TAVLTree.OnObjectCompare property. When assigned, it is used to sort the elements in the tree. It provides more information than the standard TListSortCompare handler used in TAVLTree.OnCompare: it also passes the tree to the sort mechanism.

    See also

    Name Description
    TAVLTree.OnObjectCompare Compare handler.
    TAVLTree.OnCompare Compare function used when comparing nodes.