How to set size of inactive (hidden) dock clients' tabs in JVCL Docking component?

Question

The only dock style in JVCL that I know that has the auto hide function (to pin the dock clients) is JvDockVSNetStyle. I'm using it but I can't set the size of the inactive pinned panes' tabs. When hidden, the tabs don't show the title of the pane, only the name of the active pane is shown. Sorry, I can't post an example image because that's my first question.

In the object inpector there is an option called ChannelOption with the ActivePaneSize property. Is there a way to set the inactive pane size so it can show its name? Or maybe there is another dock style that I'm missing that has the same functions?

I'm using C++Builder and JVCL 3.45.

Answer 1

i did it by commenting out these code parts:

procedure TJvDockVSChannel.GetBlockRect(Block: TJvDockVSBlock; Index: Integer;
  var ARect: TRect);
var
  BlockWidth: Integer;
begin
// HERE 

//  if Block.VSPane[Index] <> Block.ActivePane then
//    BlockWidth := Block.InactiveBlockWidth
//  else
    BlockWidth := Block.ActiveBlockWidth;

<snip>



procedure TJvDockVSChannel.Paint;
var
  I: Integer;

<snip>

  begin
    VisiblePaneCount := 0;
    for I := 0 to Block.VSPaneCount - 1 do
    begin
      if not Block.VSPane[I].FVisible then
        Continue;

      GetBlockRect(Block, I, DrawRect);
      Canvas.Brush.Color := TabColor;
      Canvas.FillRect(DrawRect);
      Canvas.Brush.Color := clGray;
      Canvas.FrameRect(DrawRect);

      AdjustImagePos;
      Block.FImageList.Draw(Canvas, DrawRect.Left, DrawRect.Top, I, dsTransparent, itImage);

// HERE 
//      if Block.ActivePane = Block.VSPane[I] then
      begin
        if Align in [alTop, alBottom] then
          Inc(DrawRect.Left, Block.InactiveBlockWidth)
        else
        if Align in [alLeft, alRight] then
        begin
          Inc(DrawRect.Top, Block.InactiveBlockWidth);
          if Align = alLeft then
            DrawRect.Left := 15
          else
            DrawRect.Left := 20;
          DrawRect.Right := DrawRect.Left + (DrawRect.Bottom - DrawRect.Top);
        end;
        Canvas.Brush.Color := TabColor;
        Canvas.Pen.Color := clBlack;

        Dec(DrawRect.Right, 3);

        OldGraphicsMode := SetGraphicsMode(Canvas.Handle, GM_ADVANCED);
        Canvas.Brush.Style := bsClear;
// HERE (changed options)
        DrawText(Canvas.Handle, PChar(Block.VSPane[I].FDockForm.Caption), -1, DrawRect, {DT_END_ELLIPSIS or} DT_NOCLIP);

Answer 2

There is an event in TJvDockServer called DoFinishSetDockPanelSize.

Within the function you create for that event you can access the size of a form using Dockpanel. There may be a way from here to set the size of the tabs.