Hide Blizz GUI

[Rince]

Well im looking for the function i need to execute if im hiden for example the FriendsFrame.

FriendsFrame:Hide(); hides it but i somehow need to tell the Blizz UI that that the frame is hidden and that its possible to show other frames at that position.

[Esamynn]

The function you are looking for is defined in UIParent.lua. Its signature is:

HideUIPanel( frame )

All of the code that handles the "sliding" windows as well as most of the rest of the similar windows in the default UI is defined in UIParent.lua.