Your circular buffer may contain, for instance the file names, e.g. fname[0] fname[1] ... fname[9] With a next variable holding next item in the circular buffer. For instance, if next == 4 then the file having fname[4] (if any) is deleted and fname[4] is assigned with the name of a newly created file. Then next is incremented (and set to zero if greater than 9). Hope it makes sense. Veni, vidi, vici.

Thank you But my problem is not with mask, when I use my activex component inside IE9, when I click on treeview with folder names the screen where show files are not refreshing, my initial dir is C:\ but if I click in e.g D:\ nothing is showed, the screen stays in C:\. This just happen with activex in browser. I could check if set to FALSE the last parameter in CFileDialog constructor is working in both cases, in my application and browser, this parameter set Vista Style dialog, but is not a acceptable solution.

Dansveen wrote: I tried getting screen limits but does not work. I'm afraid that really does not tell us anything. Please show an extract of your code and try to explain exactly what results you are seeing and what you expect to happen. One of these days I'm going to think of a really clever signature.

Cool... cheers! :)

Hmm... ...may be, it is not correctly to process AFX_GLOBAL_DATA::Resume() since it was initialized by the main thread (that is not my case). So you can empty/redirect CYourMainFrame::OnPowerBroadcast(..) without the call of CFrameWndEx::OnPowerBroadcast(..)... virtual void BeHappy() = 0;