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Can Timer interrupt widget callbacks? [message #90698]

Sun, 29 March 2015 05:45

dg86
Messages: 118
Registered: September 2012

Senior Member

Dear Folks,

A change in the behavior of Timer callbacks from IDL 8.3 to IDL 8.4 has broken one of my
applications, and I could use some help in fixing it.

Under IDL 8.3, the firing of an asynchronous Timer preempts widget callbacks.
This behavior appears to have been reversed in IDL 8.4, so that callbacks now take precedence.

Here's the issue ...

My application has a widget_draw object that is supposed to update at regular intervals while
the user drags graphics objects across the screen. I'm using Timer events to trigger the updates.
Under IDL 8.3, the widget_draw's animation is smooth. Under IDL 8.4, the animation stops
updating during drag events, which defeats the purpose of the animation.

Is there any way to restore the old behavior so that firing a Timer interrupts a widget
callback, perhaps as an option to Timer::Set()?

If there's no way to make the Timer "dominant", does anyone have suggestions for modifying
my widget callbacks so that they can check for pending timer events and handle them?

All the best,

David

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[Message index]

		Can Timer interrupt widget callbacks? By: dg86 on Sun, 29 March 2015 05:45
		Re: Can Timer interrupt widget callbacks? By: Helder Marchetto on Sun, 29 March 2015 11:58
		Re: Can Timer interrupt widget callbacks? By: dg86 on Sun, 29 March 2015 12:50
		Re: Can Timer interrupt widget callbacks? By: Helder Marchetto on Mon, 30 March 2015 02:00
		Re: Can Timer interrupt widget callbacks? By: dg86 on Mon, 30 March 2015 03:13
		Re: Can Timer interrupt widget callbacks? By: dg86 on Mon, 30 March 2015 19:32

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