SetPropInfo()
USAGE
void SetPropInfo(Window, GadgetID, HPos, Vpos)
FUNCTION
This updates the horizontal and vertical sliders to the values you provide
(HPos and VPos), and redraws the gadget.
This is useful when you have a group of sliders to update and all you need to
change is their slider positions (as opposed to all the parameters, which
ModifyProp lets you do).
INPUTS
Window = Pointer to the window the PropInfo structure resides in
GadgetID = Short integer ID of the Gadget.
HPos = Short integer position for horizontal slider between 0 and 65535.
VPos = Short integer position for vertical slider between 0 and 65535.
RESULT
none (void)