NewModifyProp: ModifyProp(), but with selective refresh.

NewModifyProp( Gadget, Window, Requester, Flags,

A0 A1 A2 D0
HorizPot, VertPot, HorizBody, VertBody, NumGad )
D1 D2 D3 D4 D5

VOID NewModifyProp( struct Gadget *, struct Window *,

struct Requester *, UWORD, UWORD, UWORD, UWORD, UWORD, WORD );

Performs the function of ModifyProp(), but refreshes gadgets in the list as specified by the NumGad parameter. With NumGad = -1, this function is identical to ModifyProp().

New for V36: When NumGad = 1, this function will now perform an incremental update of the proportional gadget knob image, rather than refreshing the entire gadget. This means much less flashing when programmatically scrolling a proportional gadget.

PropGadget: pointer to a proportional gadget
Window: pointer to the window containing the gadget or the window containing the requester containing the gadget.
Requester: pointer to a requester (may be NULL if this isn't a requester gadget)
Flags: value to be stored in the Flags field of the PropInfo
HorizPot: value to be stored in the HorizPot field of the PropInfo
VertPot: value to be stored in the VertPot field of the PropInfo
HorizBody: value to be stored in the HorizBody field of the PropInfo
VertBody: value to be stored in the VertBody field of the PropInfo
NumGad: number of gadgets to be refreshed after propgadget internals have been adjusted. -1 means "to end of list."

ModifyProp() The Intuition Reference Manual contains more information on Proportional Gadgets.

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