Zou Posted July 25, 2019 Report Share Posted July 25, 2019 It's getting and process redraw message like crazy ! Anyone had this kind of problem before? LabVIEW 2014 SP1, Windows 7 Pro. 64 bit. Tested with LabVIEW 2018 too. Control1.ctl Quote Link to comment
Darin Posted July 25, 2019 Report Share Posted July 25, 2019 Transparency + overlapping objects can lead to a situation with constant redrawing. In this case (LV14 SP1) I was able to tame it by coloring the housing a solid color and then recoloring it transparent. 1 Quote Link to comment
Zou Posted July 25, 2019 Author Report Share Posted July 25, 2019 Is there a way to prevent this ? Or should I check every ctrl ? Quote Link to comment
Darin Posted July 25, 2019 Report Share Posted July 25, 2019 Good catch using Spy++ in the first place. Not sure I would check every control, but I have always found gauges and meters to be particularly troublesome, so I would check those. If you ever color a part transparent I would think about checking, but LV has gotten much better in the past decade. Once upon a time I actually used the fact that an overlapped, transparent picture control triggered excessive redraws to "fix" problems with controls which were glitchy from a lack of refreshing. Was this control born in LV14 or was it upgraded from an earlier version? Quote Link to comment
Zou Posted July 25, 2019 Author Report Share Posted July 25, 2019 I added this gauge to an existing VI/proj. in LabVIEW 2014 SP1, and then customized it. The VI/proj. was upgraded from LabVIEW 2011 previously. Had a huge performance problem with a translucent button before, so I checked when I have performance issue again. Quote Link to comment
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