Programatically close TContextMenu

ROOT
1

Is there a way to programmatically close a context menu (TContextMenu)?
The menu was open by right clicking on the canvas.

Thank you!

2

I don’t think so, I’ll have to investigate. But what are you trying to do exactly?

3

In principle, something like this should work:

void *ud;
TContextMenu *cm = fCanvas->GetContextMenu();
if (cm)
   ((TGPopupMenu *)cm->GetContextMenuImp())->EndMenu(ud);
4

Hello Bertrand!

This approach does not work for me.

  1. TContextMenu *cm = fCanvas->GetContextMenu() returns non-zero cm even if the menu is not shown.
  2. After the menu is shown, and I run your procedure, the menu still remains visible.
  3. next time mouse right-clicked on the canvas (shoud show the menu again), it leads to a crash:
    #5 0x00007f4832550691 in non-virtual thunk to TRootContextMenu::DisplayPopup(int, int) ()
    #6 0x00007f4862abb2aa in TCanvas::HandleInput(EEventType, int, int) ()

On the question “why”:
I have TCanvas shown in a Qt window. I handle mouse actions using the HandleInput method of TCanvas. On right-click, the context menu is shown. However, the only way to close it when it was shown non-intentionally is to click on its title. I would like to find a way to close it programmatically on the mouse click outside the menu.

Thanks again,
Andrey

5

OK, then I’m afraid there is no solution to your issue…