Hide or prevent the use of the popup menu on the title bar

[NasterMain]

Hi guys, does someone know how to hide or prevent the use of the popup menu that come up when the user click a dialog title icon?

I am searching for a way to do that, for better understanding my problem I made a screenshot, here's the menu I am trying to hide/disable:

http://img104.imageshack.us/img104/7152/menuho4.jpg

Please someone can help me?

[kirants]

You have to change the dialog styles. I get confused with all those, but I am guessing you have to remove the WS_CAPTION and the WS_SYSMENU styles. Btu anyway, that's the hint