 Blinking controls and SubPanels not compatible |
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 Oct 1 2003, 04:43 PM
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There is a bug in LV7.0. If you make a control Blinking (set its Blinking property to TRUE), and then place the VI in a subpanel control, the blinking will not be seen except sporadically.
I built one VI (Master.vi), which if you open and run, the blinking works fine. Then someone pointed out that it was silly to put the Insert VI method call inside the while loop. So I rewrote it (Master2.vi) and the blinking stopped working. It seems (my best guess) the subpanel only updates its draw state during a value change event or when a drawable property is changed. Since with blinking, no value is changed and the property is the same (Blinking == TRUE, regardless of whether the blink is currently on or off), no redraw event is going to the subVI. In Master2.vi, if you just click and hold down the increment button on the VI, the blinking will appear as the data change events fire. I have filed this bug with the right people here at NI. -- Stephen Mercer LabVIEW R&D
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Oct 1 2003, 04:43 PM
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Oct 19 2005, 02:28 PM
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 Extremely Active Premium Member  Posts: 581 Joined: 19-June 03 From: Bay Area, CA (USA) Member No.: 121 Using LabVIEW Since:1998 LV:8.2.1 ,8.5 ,8.0.1 
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QUOTE (Stephen.Mercer @ Oct 1 2003, 09:43 AM)  There is a bug in LV7.0. If you make a control Blinking (set its Blinking property to TRUE), and then place the VI in a subpanel control, the blinking will not be seen except sporadically. I built one VI (Master.vi), which if you open and run, the blinking works fine. Then someone pointed out that it was silly to put the Insert VI method call inside the while loop. So I rewrote it (Master2.vi) and the blinking stopped working. It seems (my best guess) the subpanel only updates its draw state during a value change event or when a drawable property is changed. Since with blinking, no value is changed and the property is the same (Blinking == TRUE, regardless of whether the blink is currently on or off), no redraw event is going to the subVI. In Master2.vi, if you just click and hold down the increment button on the VI, the blinking will appear as the data change events fire. I have filed this bug with the right people here at NI. -- Stephen Mercer LabVIEW R&D Good News, this has been fixed in LabVIEW 8.0  PJM -------------------- Tags
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Feb 15 2006, 03:51 AM
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 Instant Human, just add coffee Premium Member Posts: 889 Joined: 31-January 03 From: Waterford, CT USA Member No.: 45 Using LabVIEW Since:1992 LV:8.2.1 ,7.1 ,8.0.1
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Yep, your example of the effect works just fine (no sporadic blink) under LabVIEW 8 for me.
-------------------- ************************************************************* "Always listen to the experts, they'll tell you what can't be done, and why. Then go do it." ~The Notebooks of Lazarus Long (by Robert Heinlein) ************************************************************* Tags
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