[Qt-interest] Problem using QT in a plugin for Adobe After Effects (mac)

[John Weeks]

Sounds a lot like what I saw when I tried to integrate a Qt dialog  
into our application. If the application uses old-style (read:  
ancient) WaitNextEvent event handling (not Carbon events) then Qt gets  
all the events before the application does, because Qt uses Carbon  
events and that's how Carbon events work. I would have thought that  
After Effects would be using Carbon events by now, but...

Just a thought and some speculation...

Regards,
John Weeks

WaveMetrics, Inc.
Phone (503) 620-3001
Fax   (503) 620-6754
email   support at WaveMetrics.com

On Oct 7, 2010, at 2:58 PM, Zviadi Varshanidze wrote:

> Sorry for posting this twice, maybe someone has already struggled  
> with something like this?
>
> Zviadi
>
> From: Zviadi Varshanidze
> Sent: Tuesday, October 05, 2010 3:46 PM
> To: qt-interest at trolltech.com
> Subject: Problem using QT in a plugin for Adobe After Effects (mac)
>
> Hello,
>
> While trying to port the AE plug-in whose GUI uses QT, I've run into  
> issues.
> Windows version of plug-in works just fine. On Mac, right after I  
> display a modal QDialog and then close it, I observe a strange  
> behavior. Buttons in native AE windows start to not respond to mouse  
> clicks.
> For example, in Open Project dialog, I'm unable to select any items  
> in the list, cannot press the Open button etc. This happens when  
> using Cocoa version of QT 4.7. With Carbon version, the menu  
> commands does not even work at all, i.e. I can select them but  
> nothing happens. I've heard Qt installs its own event handler  
> blocking the one set by the Host application. Setting  
> Qt::AA_MacPluginApplication before creating the QApplication  
> instance does not solve the problem. Could someone tell me what  
> could be the cause of such behavior and suggest a possible  
> workaround to this problem?
>
> Thanks in advance
> _______________________________________________
> Qt-interest mailing list
> Qt-interest at trolltech.com
> http://lists.trolltech.com/mailman/listinfo/qt-interest

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