GUI_GADVAL(GAD)

Returns a value depending on the passed gadget.

Gadget Type	Value Returned
GUI_SWITCH	On/Off
GUI_CYCLE	Current Item
GUI_TXTINPUT	Value of string (if any)
GUI_TXTBOX	Current Line
GUI_INTEGER	Current Value
GUI_TICK	On/Off
GUI_SELECTOR	Current Item
GUI_IMAGEBOX	Image Pointer
GUI_PROG	Current Value
GUI_3D	Gadget's 3D Camera
GUI_IMAGE_SWITCH	On/Off