>>>>>>>>>I have a form with combo box. If the user double clicks a list item and it happens to be over another control, the other control gets clicked.
>>>>>>>>>
>>>>>>>>>How can this be prevented?
>>>>>>>>
>>>>>>>>By the user. Educate the user by telling that an item is selected by a single click.
>>>>>>>
>>>>>>>I have found that relying on educating the user is (1) a frustrating and usually fruitless exercise, and (2) a poor substitute for better software operating design.
>>>>>>
>>>>>>I fully understand your point. But nevertheless, these double-clicking users will eventually learn that it really is one click too much on that screen. So, the developer can best totally ignore the complaint and reply: "It is by design".
>>>>>
>>>>>Disagree totally.
>>>>
>>>>Okay. I'm currently here because I have not much in my hands. If that's also your current condition we might start a holy war. :)
>>>
>>>No, no war thanks :)
>>
>>Then do not reply with "Disagree totally".
>
>I also totally disagree with your stance. Its a cop out to say "by design" or not figure out a way to make it work correctly with a double click. I wouldn't buy a piece of software like that.

SET DEBATE ON

First off all, it's Microsoft's design. It is the default behavior of the combobox. A single click is enough. If you do a second click (which isn't the same as a double click) and if there is another object exactly below the cursor, then yes, of course, it will be activated.