This example shows how to use the OnColumnClick and OnCompare events of a list view to let users sort the columns in a report-style list view by clicking on the column headers. This requires a global variable to keep track of the column that was clicked:var ColumnToSort: Integer;The OnColumnClick event handler sets the global variable to indicate the column to sort and calls AlphaSort:procedure TForm1.ListView1ColumnClick(Sender: TObject; Column: TListColumn);begin ColumnToSort := Column.Index; (Sender as TCustomListView).AlphaSort; end; The OnCompare event handler causes the list view to sort on the selected column:procedure TForm1.ListView1Compare(Sender: TObject; Item1, Item2: TListItem; Data: Integer; var Compare: Integer); var ix: Integer; begin if ColumnToSort = 0 then Compare := CompareText(Item1.Caption,Item2.Caption) else begin ix := ColumnToSort - 1; Compare := CompareText(Item1.SubItems[ix],Item2.SubItems[ix]); end;end;Note: This OnCompare event handler uses the global CompareText function. An application may want to use AnsiCompareText, CompareStr, or AnsiCompareStr instead, depending on whether the comparison should be case-sensitive and whether the locale should be considered.
要排序好像有定義好方法(好像是AphaSort).^_^
ColumnToSort := Column.Index;
(Sender as TCustomListView).AlphaSort;
end;
The OnCompare event handler causes the list view to sort on the selected column:procedure TForm1.ListView1Compare(Sender: TObject; Item1, Item2: TListItem; Data: Integer; var Compare: Integer);
var
ix: Integer;
begin
if ColumnToSort = 0 then
Compare := CompareText(Item1.Caption,Item2.Caption)
else begin
ix := ColumnToSort - 1;
Compare := CompareText(Item1.SubItems[ix],Item2.SubItems[ix]);
end;end;Note: This OnCompare event handler uses the global CompareText function. An application may want to use AnsiCompareText, CompareStr, or AnsiCompareStr instead, depending on whether the comparison should be case-sensitive and whether the locale should be considered.