CPallini wrote: Perhaps he wants to dynamically create an instance of a class whose type is given by the "frmMainPage" string. Do you agree? Yeah, realized I read his question wrong

A solution might be proposed if the amount of information was a little less scant :) What kind of "keypress handler"? Defined where? What does it contain?

You mean catch _all_ tooltips? Even from other apps? Look up windows hooks, start at SetWindowsHookEx - you will need to intercept all messages for all processes (though you may be able to use a CBT hook and just check for the window class equal to TOOLTIPCLASSA\TOOLTIPCLASSW) and work out when a tool tip is created and dispayed and get the text from it.

Subclass the CFileDialog then you have methods that do, what you want. like: OnFileNameChanged or OnFolderChanged or onLBSelChangedNotify

OK, I did the same. The window closes there is no problem with that. But the problem is; I am using a process which uses soundcard inside the program, I play some voice on soundcard, and I want to stop it before user presses close button and closes application. I have the function that closes my process, I implemented an event handler to the exit event on exit menu item, and it worked. I wanted to do the same for event that works when close button is pressed, but this time my application window closes but the process does not, it still works. And when I hook up Task Manager i see that my application is also still working, which shows me that my window is destroyed but the application is still running.

Thanks! It worked.