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TlistviewItem and  Alignment

Posted on 1998-07-10
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Last Modified: 2010-04-04
hi
i"m using the TlistView and in one of the TlistViewItems u need to make an alignment
 taRightJustify , 4 some reason (gess this is borland/imprise bug) it does let me to do it
and always going back to taLeftJustify
how can i fix it ?
10x inadvance
asi
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Question by:asi
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vladika earned 20 total points
ID: 1357573
Try it (simplest way)

1) copy comctrls.pas from source in your project directory
2) modify two procedures
procedure TListColumn.SetAlignment(Value: TAlignment);
procedure TCustomListView.UpdateColumn(Index: Integer);

procedure TListColumn.SetAlignment(Value: TAlignment);
begin
  if (Alignment <> Value) then  // here was ' and Index <> 0 '
  begin
    FAlignment := Value;
    Changed(False);
    TListColumns(Collection).Owner.Repaint;
  end;
end;

procedure TCustomListView.UpdateColumn(Index: Integer);
var
  Column: TLVColumn;
begin
  if HandleAllocated then
    with Column, Columns.Items[Index] do
    begin
      mask := LVCF_TEXT or LVCF_FMT;
      pszText := PChar(Caption);
 //     if Index <> 0 then
        case Alignment of
          taLeftJustify: fmt := LVCFMT_LEFT;
          taCenter: fmt := LVCFMT_CENTER;
          taRightJustify: fmt := LVCFMT_RIGHT;
        end;  // do not forget ;
//      else fmt := LVCFMT_LEFT;
      if WidthType > ColumnTextWidth then
      begin
        mask := mask or LVCF_WIDTH;
        cx := FWidth;
        ListView_SetColumn(Handle, Index, Column);
      end
      else begin
        ListView_SetColumn(Handle, Index, Column);
        if ViewStyle = vsList then
          ListView_SetColumnWidth(Handle, -1, WidthType)
        else if ViewStyle = vsReport then
          ListView_SetColumnWidth(Handle, Index, WidthType);
      end;
    end;
end;

3) in your program
procedure TForm1.FormCreate(Sender: TObject);
begin
  ListView1.Columns[0].Alignment := taRightJustify; // you cannot set it in design time
  // but now in runtime you can
end;

4) rebuild project (build, not compile)

5) run

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Expert Comment

by:vladika
ID: 1357574
Did you found another way?
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