[Victor Yukhtenko]

Description of the Problem
The issue was initially observed in Vip10.
I have now checked its status in Vip11, and the problem persists.

Steps to Reproduce
Open the attached test project.
Run the project.
Press the rightmost button on the ribbon.
A dialog appears. Close the dialog.
Observed Behavior
After closing the dialog, the ribbon becomes unresponsive to mouse hover or clicks on its buttons.
Clicking in the message area restores the ribbon's activity.
Suspected Cause
It appears that the main loop does not return to its normal state after the dialog is closed.

Code Snippet for the Main Loop

Code: Select all

class predicates
    loop : (gui_native::msg Msg).
 
clauses
    loop(Msg) :-
        WM_QUIT = getMessage_update(Msg),
        if true = WM_QUIT then
            gui_native::msg(:WParam = WParam | _) = Msg,
            programControl::setApplicationExitCode(getUnsigned(WParam))
        else
            try
                if not(tryTranslateAccelerator(Msg)) and not(isDialogMessage(vpi_native::getActiveDialog(), Msg)) then
                    _ = gui_native::translateMessage(Msg),
                    _ = gui_native::dispatchMessage(Msg)
                end if
            catch TraceId do
                mainExe::dumpException(TraceId)
            end try,
            loop(Msg)
        end if.

[Thomas Linder Puls]

Hi, Victor. Thanks for pointing out this problem.

Actually, there is nothing wrong with the "loop" or the ribbonControl.

The problem is that when your dialog closes the focus goes to the window with the frame, titlebar, close "cross", etc. Which I don't think should ever have focus.

But we have bad experience with doing stuff that changes focus. We really prefer that Windows handles such things itself.

We will look for a solution.