Gamma/Photon : Using Gamma™ with the Photon microGUI®, Version 1.1
	Callback Classes

`PtScrollbarCallback`

PtScrollbarCallback — handle movement callback information.

Synopsis

class PtScrollbarCallback
{
    action;      // unsigned integer
    position;    // integer
}

Description

This class holds information from Pt_CB_SCROLL_MOVE (in PtScrollbar) as well as Pt_CB_SCROLLED_X and Pt_CB_SCROLLED_Y (in PtScrollArea). These callbacks are generated when the position of the handle of a scrollbar is changed.

Also see Pt_CB_SCROLL_MOVE in the PtScrollbar section, or Pt_CB_SCROLLED_X in the PtScrollArea section, of the Photon documentation.

Instance Variables

action

This instance variable monitors the action of the scrollbar handle, and takes one of the following values:

Constant	Description
`Pt_SCROLL_INCREMENT`	The scrollbar handle has moved down or right by one increment.
`Pt_SCROLL_DECREMENT`	The scrollbar handle has moved up or left by one increment.
`Pt_SCROLL_PAGE_INCREMENT`	The scrollbar handle has moved down or right by the equivalent of one page.
`Pt_SCROLL_PAGE_DECREMENT`	The scrollbar handle has moved up or left by the equivalent of one page.
`Pt_SCROLL_TO_MAX`	The scrollbar handle has moved to the bottom or far right.
`Pt_SCROLL_TO_MIN`	The scrollbar handle has moved to the top or far left.
`Pt_SCROLL_DRAGGED`	The scrollbar handle is being dragged.
`Pt_SCROLL_RELEASED`	The scrollbar handle has been released from a drag.
`Pt_SCROLL_SET`	The scrollbar handle position was set with a function call.

position

An integer specifying the position of the scrollbar handle.

Associated Classes

PtScrollbar, PtCallbackInfo


PtOnOffButtonCallback		PtSliderCallback