Hi,

In my winforms application I have the situation, that in some cases I receive multiple form activate events,

but no deactivate event. Sounds strange but I can reproduce the problem.

I have an MDI winforms application, which uses the TabbedMdiManager and the ToolbarManager.

The toolbar has several ButtonTools and one ControlContainertTool with a usercontrol. On form's

Activated/Deactivated event I show or hide some tools.

To reproduce the problem, I made a quick&dirty winapp which I have attached. Do the following steps to see

what's wrong:

• Start the application
• Click on Tab "Form_Index_0"
• Click on Tab "Form_Index_1"
• Click on Tab "Form_Index_2"
• Check a RadioButton
• Click on Tab "Form_Index_1"
• See the output window of visual studio

Here's my output

Form_Index_2 deactivated...
=====================================
Form_Index_0 activated...
Form_Index_0 deactivated...
=====================================
Form_Index_1 activated...
Form_Index_1 deactivated...
=====================================
Form_Index_2 activated...
Form_Index_2 deactivated...
=====================================
Form_Index_0 activated...                           // I didn't activate the first form!!
Form_Index_1 activated...

Something is wrong now, because when I click on Tab "Form_Index_0", I will not receive an activate event. This causes that some tools are still visible but should not.

Is this a bug, or if not, how can I workaround this issue?

It would be great, if somebody could help me.

Thanks in advance,