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1415
Bug? UltraCombo dropdown drawing strangely
posted

So I have a winform application that is being used by about 100 people across 5 remote desktop servers 24 hours a day for the last few years.
In that time I have seen this problem a handful of times but it seems to be happening more often to one user now.
Typically I see this with users with multiple monitors.

In this case I had the user log out of the system, log back on and follow all the steps that led to the bug the first time but it is not reproducible for him.
It seems to affect EVERY combo box in the entire application (and there are lots of screens).

I am using appstyling I'm not sure if that has anything to do with it.
I have attached a screenshot.. it almost looks like the combobox is sizing to a negative width??

I have no idea where to start tracking this down but any suggestions are welcome!

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  • 469350
    Offline posted

    Hi,

    What version of the controls are you using? It looks like the auto-sizing logic that determines the size of the dropdown thinks that there isn't enough room for the combo to display at the correct width. There was a bug in this logic that would sometimes get the wrong screen size when using a remote desktop connection, but that bug was fixed a couple years ago. So if you are using an old version of the controls, it might be worth upgrading or trying the latest service release.

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