DropDown list of the Combobox is getting detached while scrolling in MFC aplication in windows 10

[Shubham kesarwani]

Hi,

We have a problem with mousewheel scrolling when ComboBox dropdown list is opened in Windows 10.

In this case the dropdown list is getting detached with the combobox when we scroll the mouse wheel outside the dropdown list.

To reproduce the issue:

1) Create a MFC application and use CFormView as a base class(SDI OR MDI).

2) Place a Combobox in the view and add some entry to the combobox.

3) Run the application

4) Adjust the application window size so that scroll bar get enable.

5) Click on the combobox to open the drop down list

6) move the mouse outside the opened list and scroll the mouse wheel.

Note: When we run the same application in windows 7 the behavior is different. In windows 7 scrolling of the application get disable if we scroll the mouse wheel outside the drop down list and list is opened.

Similar issue is also reported for .net please check the below link.

when page is scrolled drop down is moved, detaching from combobox - Developer Community

Anybody knows how to fix it ?

Thanks in advance.

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