PopupWindow SetFocus fail

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I plan to use wxPopupTransientWindow to popup a window with a wxVListBox. Then I find that I can't use mouse wheel to scroll my vlistbox. The point is that vlistbox can't accept focus while it is in a window derived from wxPopupTransitentWindow. I test the popup example. I find that mouse wheel fail in wxSpinCtrl, too.
I use wxWidgets-3.1.0 with visual studio 15.

[ONEEYEMAN]

Hi,
What is your question exactly? Or what problem you are trying to solve?

Thank you.

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Maybe I need state clearly. My native language is not English. I am sorry for my poor English. I want to implement a hybrid button like hybrid style in wxRibbonButtonBar. But it has custom appearance. So I derive MyPopupWindow from wxPopupTransitentWindow. In the window, there is a listbox derived from wxVListBox. I find that I can't use mouse wheel to scroll the listbox. So did it in "popup" example, there is a wxSpinCtrl.

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https://stackoverflow.com/questions/964 ... dow-handle#
Here is some solution.

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https://stackoverflow.com/questions/964 ... dow-handle#
Here is some solution.

Yesterday I tried it successfully. Yesterday I use wxWidgets by linking lib file, but, today I use dll to link. The Windows API ::SetForegroundWindow fail.