Gamma/Photon : Using Gamma™ with the Photon microGUI®, Version 3.4
	Widget Classes

`PtSlider`

PtSlider — A sliding-scale input mechanism.

Synopsis

class PtSlider PtGauge
{
    slider_flags;             // flag  (Pt_ARG_SLIDER_FLAGS)    
    slider_handle_height;     // unsigned short  (Pt_ARG_SLIDER_HANDLE_HEIGHT)    
    slider_handle_width;      // unsigned short  (Pt_ARG_SLIDER_HANDLE_WIDTH)    
    slider_image;             // PhImage  (Pt_ARG_SLIDER_IMAGE)    
    slider_increment;         // unsigned short  (Pt_ARG_SLIDER_INCREMENT)    
    slider_label_br;          // string  (Pt_ARG_SLIDER_LABEL_BR)    
    slider_label_br_col;      // color  (Pt_ARG_SLIDER_LABEL_BR_COL)    
    slider_label_tl;          // string  (Pt_ARG_SLIDER_LABEL_TL)    
    slider_label_tl_col;      // color  (Pt_ARG_SLIDER_LABEL_TL_COL)    
    slider_multiple;          // unsigned short  (Pt_ARG_SLIDER_MULTIPLE)    
    slider_tick_major_col;    // color  (Pt_ARG_SLIDER_TICK_MAJOR_COL)    
    slider_tick_major_div;    // long  (Pt_ARG_SLIDER_TICK_MAJOR_DIV)    
    slider_tick_major_len;    // unsigned short  (Pt_ARG_SLIDER_TICK_MAJOR_LEN)    
    slider_tick_minor_col;    // color  (Pt_ARG_SLIDER_TICK_MINOR_COL)    
    slider_tick_minor_div;    // long  (Pt_ARG_SLIDER_TICK_MINOR_DIV)    
    slider_tick_minor_len;    // unsigned short  (Pt_ARG_SLIDER_TICK_MINOR_LEN)    
    slider_trough_col;        // color  (Pt_ARG_SLIDER_TROUGH_COL)    
    slider_trough_size;       // unsigned short  (Pt_ARG_SLIDER_TROUGH_SIZE)    
}

Base Classes

PtWidget <-- PtBasic <-- PtGauge <-- PtSlider

Description

This widget is a sliding scale that accepts numerical data input in analog fashion. It consists of a handle that moves along a trough and points to optional tick marks.

For detailed information, please refer to PtSlider in the Photon documentation.

Instance Variables

slider_flags

This instance variable specifies the location of the tick marks, and may be a combination of zero or more of the following flags:

Constant	Description
`Pt_TICKS_ON_TOP`	Put the scale marks on top of the trough.
`Pt_TICKS_ON_LEFT`	Put the scale marks to the left of the trough.
`Pt_TICKS_ON_BOTTOM`	Put the scale marks on the bottom of the trough.
`Pt_TICKS_ON_RIGHT`	Put the scale marks to the right of the trough.
`Pt_TICKS_TOUCH_TROUGH`	Make the scale marks touch the trough.
`Pt_TICKS_ETCHED_IN`	Give the scale marks an etched-in appearance.
`Pt_TICKS_ETCHED_OUT`	Give the scale marks an etched-out appearance.
`Pt_SLIDER_POINT_LEFT`	The handle will point left.
`Pt_SLIDER_POINT_UP`	The handle will point up.
`Pt_SLIDER_POINT_RIGHT`	The handle will point right.
`Pt_SLIDER_POINT_DOWN`	The handle will point down.
`Pt_SLIDER_IMAGE`	The slider handle is an image specified by `slider_image.`.
`Pt_SLIDER_MASK`	Internal informational bit.

slider_handle_height , slider_handle_width

A number of pixels specifying the height or width of the handle. Defaults are 40 and 15 respectively.

slider_image

A PhImage to display on the handle. You must set the slider_flags Pt_SLIDER_IMAGE in order to use this variable.

slider_increment

An integer specifying the increment for the slider to move when the arrow keys are pressed. Default is 1.

slider_label_br

A string comprising the label to display on the bottom or right of the slider, depending on its orientation.

slider_label_br_col

A number specifying the color of the bottom or right label. Default is 0x0 (black).

slider_label_tl

A string comprising the label to display on the top or left of the slider, depending on its orientation.

slider_label_tl_col

A number specifying the color of the top or left label. Default is 0x0 (black).

slider_multiple

An integer specifying the increment for the slider to move when you press PgUp or PgDn, or click on the trough. Default is 0.

slider_tick_major_col , slider_tick_minor_col

A number specifying a color for the major or minor ticks. Default is 0x0 (black).

slider_tick_major_div

The number of major tick divisions. Default is 10.

slider_tick_major_len , slider_tick_minor_len

A number of pixels specifying the length of the major or minor ticks. Defaults are 10 and 0 respectively.

slider_tick_minor_div

The number of minor tick divisions per major division. Default is 0.

slider_trough_col

A number specifying the color of the trough. Default is 0xc0c0c0 (grey).

slider_trough_size

A number of pixels specifying the width of the trough. Default is 4.

Callbacks

The following callback is associated with this widget:

Callback	Description
`Pt_CB_SLIDER_MOVE`	This callback is generated when the position of the slider handle changes.

Associated Classes

PtSliderCallback, PtCallbackInfo


PtSeparator		PtTerminal