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Re: Widget_windows, scrolling and refreshing [message #90673 is a reply to message #90672]

Tue, 24 March 2015 14:07

Helder Marchetto
Messages: 520
Registered: November 2011

Senior Member

On Tuesday, March 24, 2015 at 9:40:03 PM UTC+1, Paul Mallas wrote:
> Hello,
>
> I have a widget_base which holds a variable number of widget_windows containing image chips. If the number of widget_windows required exceeds a threshold, the y scroll bar is enabled on the widget_base.
>
> My problem is when the scroll bar is enabled and I actually scroll, only the top and bottom row of widget_windows refresh (i.e., the ones moving onto the visible area when scrolled). The center rows of widget_windows go black and are never refreshed.
>
> There does not seem to be a 'scroll event' off which to cue a refresh. Any ideas how to make the black window_widgets refresh?
>
> Thank you

I've ran into a similar problem with FG graphics and I found a workaround. I don't like it, but saves me lots of headaches. I basically fire a timer_event every second (or less... depending) and I then refresh windows using something like:
oWin->refresh

Does the job, but I would also like these window to update on their own :-)
Let me know if you have a better solution.

Cheers,
Helder

PS: This also happens with normal windows. Event if I do p=plot(/test) and then do something else, the window might go black. The only way I found to get things back is to interact with the widget (or refresh it).

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[Message index]

		Widget_windows, scrolling and refreshing By: PMan on Tue, 24 March 2015 13:39
		Re: Widget_windows, scrolling and refreshing By: Helder Marchetto on Tue, 24 March 2015 14:07
		Re: Widget_windows, scrolling and refreshing By: PMan on Tue, 24 March 2015 14:59
		Re: Widget_windows, scrolling and refreshing By: PMan on Tue, 24 March 2015 15:19

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