Two ComboBox problems

[Klarre]

I have to problems with my ComboBoxes.

1. In my GUI I have a lot of FrameWindows, ListBoxes, ComboBoxes, Buttons etc. All these Windows are registered to the events MouseEnter and MouseLeave. The handler functions is invoked perfectly every time I enter or leave a GUI element, except when the ComboBoxes are hovered. Why wont my ComboBoxes detect MouseEnter and MouseLeave? They are set to be enabled, so that is not the problem...

2. When I click on the down-arrow to open a ComboBox, it wont stay opened. It is open until i release the mouse button. It also detects which item the mouse hovered during the release. I can't see any differences between my code and the sample applications. What do you think I should check out first?

Thanks for your help!

/Klarre