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117

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+1  Q: 

(WinForms) ListView shows tooltips behind its own form when form is topmost

I have a Form with just a ListView in it. The ListView is set to show tooltips for subitems (in Details view). The tool tip shows fine if the form is not top most. When I set the Form's TopMost to true, the tool tip appears "behind" the window.

Is there any other property/combination of properties that need to be set in order to get the tool tip to show as usual, over the form?

A: 

That appears to be either a) by design or b) a bug (depending upon who you believe and what you read about this issue).

Since ToolTips are essentially TopMost windows and your Form is a TopMost window, there is a bit of contention at the O/S level as to what to really show as TopMost.

See here: http://www.itags.org/dotnet/169331/

Michael Todd  2010-03-03 04:42:23
Yes, that's what I figured. I'm leaning towards b).I guess this forces developers who want to work-around this to either user third-party controls or dive into the internals of the ListView.
Eric  2010-03-03 22:40:48

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