AHK - Sets a GUI as a child to a parent, via parent class

SetParentByClass

SetParentByClass(Window_Class, Gui_Number) ; F
{ 
	Parent_Handle := DllCall( "FindWindowEx", "uint",0, "uint",0, "str", Window_Class, "uint",0) 
	Gui, %Gui_Number%: +LastFound 
	Return DllCall( "SetParent", "uint", WinExist(), "uint", Parent_Handle )
}