Messagebox within a callback fails

Didier Bur

Hi all,

I'm encountering this problem:
When writing a callback function, everything goes well until a messagebox call: the SU window suddenly minimizes to the taskbar , the message box doesn't pops-up and the callback stops

Something like this:

@web_dialog.add_action_callback("wcCreatePlace") { |d, p|		
			# Possible opening ?
			pushPullDoable=validateFace4Pushpull(face)
			if pushPullDoable
				dist=findWallFaceDistance(face)
				if dist
# EVERYTHING OK UNTIL HERE
					rep=UI.messagebox("Open the wall ?",MB_YESNO)
					face.pushpull(-dist) if rep == IDYES
				end
			end
		}

Anyone encountered this before ?

fredo6

@didier bur said:

Hi all,

I'm encountering this problem:
When writing a callback function, everything goes well until a messagebox call: the SU window suddenly minimizes to the taskbar , the message box doesn't pops-up and the callback stops

I don't have the problem, but I use a generic block for the call back and then dispatch the action.

Anyway, very strange!

In your code, I see a variable <face> that is not initialized in the block. Is this the real code?

Didier Bur

Thanks Fredo,

No, that's not the real code, simplified for readability.

En fait, "face" est une variable d'instance @face dans mon vrai code, j'ai simplifié pour poster ici.
Je n'ai toujours pas solutionné le pb, j'ai mis des mouchards partout pour tracer ce que fait le callback, et dès que la messagebox est appelée, plus rien...
Je vais calquer ma manière de faire sur la tienne

TIG

Change this one line to output 'face' & 'dist' to the Ruby Console just before the failure.
**p face; p** dist=findWallFaceDistance(face)

Didier Bur

@TIG
Thanks for the hint, unfortunately it doesn't help, I'm getting the correct values for face and dist outputs. BUT, I tried to call message box in others callbacks, it worked in every case.
So what was wrong with this particular callback ? Guess what, one CANNOT call a UI.messagebox after a webdialog (or html dialog) closes, modal or non-modal.
There's some kind of logic here...

This doesn't work:


# callback cancel
@web_dialog.add_action_callback("dlg_cancel_settings") { |d, p|
	@web_dialog.close()
	r=UI.messagebox("Are you sure ?",MB_YESNO)
}

This works:


# callback cancel
@web_dialog.add_action_callback("dlg_cancel_settings") { |d, p|
	r=UI.messagebox("Are you sure ?",MB_YESNO)
	@web_dialog.close()
}