TObjectSortCompare procedure type
Custom sort callback handler.
Declaration
TObjectSortCompare = function(Tree: TAVLTree; Data1: Pointer;
Data2: Pointer): Integer of objectArguments
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
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
OnCompare:
it also passes the tree to the sort mechanism.See also
An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.