Optimization of 2D image is not refresh properly
I have an application that displays an image in a 2D image indicator and draws a few rectangles and lines on the top of the image.
The locations of these lines of change throughout the day, and the application is designed to run reduced and then give a glance at different points of status when it is restored by the user.
Although reduced, however, the image seems not updated, even if my code is updated once per second. I can't really what happens when it is obviously reduced, but the behavior persists for some time after the window is restored, and is the State that is 'frozen' from the time wherever he played.
There are other numerical indicators on the front panel is updated in the same loop of 1 Hz, so I know that its just the indicator of 2D image which does not - that is to say, something with LabVIEW or associated system is causing the image that does not refresh while it is reduced and more importantly still, for some time after the application is restored.
Some things that will cause an update to the image after that I restored to the taskbar to a stale view:
- Minimize once again, and then restore it again (from the window of LabVIEW)
- Probe the datapath on the comic for final output to Draw Line that connects to the indicator
- Wait some time (15 seconds? 30 seconds?)
I also tried to set the following property without effect node:
- VI > Panel > be different updates from Control Panel > set to False
Another way to think about it would be to imagine a picture control 2D with an analog clock, where the lines are drawn to the hour and minutes and updated once per second. This isn't what I do, but the example is easy to understand. When the application is restored from the taskbar, the clock appears frozen in time since the last time it has been minimized.
Same behavior run this in LV 2012 and 2013... I am looking for property nodes or update methods to force a refresh to 1 Hz, without worrying if the display is visible. The display should be immediately updated when the application is restored by the user.
Hello m3nth,
I came across something similar a while back - at the time, I think that I found myself using the (Value) property, which seems to force a refresh.
Kind regards
Tags: NI Software
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