How to Keep DockPanel Tabs Consistently Displayed at the Top

The Capital Group

Hello everyone,

My development environment is C++ Builder 10.4 (LMD version 2020). I have placed a Docksite on a Form, right-clicked on the Docksite, and selected "New Panel (Tabs)" to add eight DockPanels to the Docksite. When I run the program, the tabs appear at the top of each DockPanel, as shown in Image 1, which is the intended display.

However, when I drag a DockPanel to rearrange its position, some DockPanels end up with their tabs appearing at the bottom, as shown on the right side of Image 2. I would like to ensure that, whether creating new DockPanels dynamically or dragging existing DockPanels, the tabs consistently appear at the top of each panel, as shown on the left side of Image 2.

Is there a way to achieve this? Thank you.

Eugene Balabuev (LMD)

You can restrict docking possibilities using OnUpdateHotSpots event:

procedure TForm23.LMDDockSite1UpdateHotSpots(Sender: TObject;

  AZone: TLMDDockZone; var EnabledAreas: TLMDActiveAreas);

begin

  EnabledAreas := [hsaDocsLeft, hsaDocsTop, hsaDocsRight,

                   hsaDocsBottom, hsaTabs, hsaTabAreas,

                   hsaSplitters];

end;

The Capital Group

The Capital Group

Thank you for your response. For certain reasons, I now need to remove the tab options and use LMDShapeButton to switch between DockPanels (as shown in the attached Image 3). How should I adjust the properties to achieve this?

Eugene Balabuev (LMD)

There are no way. Docking site is a container, which designed to be configured by the end user at run-time. It's not like a super panel component for the programmer. 

Maybe you want to change the style? If so, then read DockingPack documentation here:

https://files.lmd.de/downloads/tutorials/dockingpack/index.html

https://files.lmd.de/downloads/tutorials/videos/LMDDockingPack-StyleEditor.mp4