slider.gadget

SLIDER_GetClass

gadgetclass

bevel.image

Slider gadgets are used to control an amount, a level or an intensity such as volume or color.

Note that the IntuiMessage.Code field will contain the SLIDER_Level attribute cast to a WORD.

GA_Disabled (BOOL)

Determines whether the slider is disabled or not. Changing disable state will invoke OM_NOTIFY.

Defaults to FALSE.

Applicability is (OM_NEW, OM_SET, OM_UPDATE, OM_NOTIFY)

GA_TextAttr (struct TextAttr *)

The font that will be used for the level display.

Defaults to NULL (RastPort default font).

Applicability is (OM_NEW)

GA_BackFill (struct Hook *)

A layer backfill hook to provide a more complex background pattern. See InstallLayerHook() for more details about the backfill hook.

Defaults to NULL.

Applicability is (OM_NEW, OM_SET, OM_UPDATE)

SLIDER_Level (WORD)

The current level of a slider. When the level is at its minimum, the knob will be all the way to the left for a horizontal slider or all the way at the top for a vertical one. Conversely, the maximum level corresponds to the knob being to the extreme right or bottom. You can swap the minimum and maximum positions by using the SLIDER_Invert tag.

Defaults to 0.

Applicability is (OM_NEW, OM_SET, OM_UPDATE, OM_GET, OM_NOTIFY)

SLIDER_Min (WORD)

The minimum slider level. Values smaller than -32768 are not supported.

Defaults to 0.

Applicability is (OM_NEW, OM_SET, OM_UPDATE, OM_GET, OM_NOTIFY)

SLIDER_Max (WORD)

The maximum slider level. A level beyond 65535 is not supported.

Defaults to 0.

Applicability is (OM_NEW, OM_SET, OM_UPDATE, OM_GET, OM_NOTIFY)

SLIDER_Orientation (UWORD)

Define orientation of the slider.

Accepted values as defined in gadgets/slider.h are:

SORIENT_HORIZ SORIENT_VERT

Defaults to SORIENT_VERT.

Applicability is (OM_NEW)

SLIDER_DispHook (struct Hook *)

Hook which is invoked whenever the slider's level changes.

Your hook function will be called as follows:

void Func(struct Hook *hook, APTR slider, struct TagItem *tags);

A0 A2 A1

Object is the slider gadget. The message is a tag list with GA_ID, SLIDER_Level, SLIDER_Min, SLIDER_Max, GA_UserInput and (optionally) GA_Disabled.

Applicability is (OM_NEW, OM_SET, OM_UPDATE)

SLIDER_Ticks (WORD)

Number of ticks to be displayed along the slider body. For small ranges (depending on the gadget size) you'd set this to SLIDER_Max + 1.

Defaults to 0 (no ticks).

Applicability is (OM_NEW, OM_SET, OM_UPDATE)

SLIDER_ShortTicks (BOOL)

Alternate long and short ticks.

Defaults to FALSE.

Applicability is (OM_NEW, OM_SET, OM_UPDATE)

SLIDER_TickSize (LONG)

Size of slider ticks.

Defaults to 5.

Applicability is (OM_NEW, OM_SET, OM_UPDATE)

SLIDER_KnobImage (struct Image *)

Image for slider knob. Must be a BOOPSI object.

Applicability is (OM_NEW)

SLIDER_BodyImage (struct Image *)

Image for slider body. Must be a BOOPSI object.

Applicability is (OM_NEW)

SLIDER_Gradient (BOOL)

SLIDER_PenArray (UWORD *)

OBSOLETE DON'T USE! Please use gradientslider.gadget.

SLIDER_Invert (BOOL)

Flip Min/Max positions.

Defaults to FALSE.

Applicability is (OM_NEW)

SLIDER_KnobDelta (WORD)

Level step when clicking in the container.

Defaults to 1.

Applicability is (OM_NEW)

SLIDER_LevelFormat (CONST_STRPTR)

(V47) Format string for slider level display. May contain up to one format specifier for RawDoFmt(), e.g. "%lu" or "%s", then the SLIDER_LevelHook hook function will be called to query the argument.

Applicability is (OM_NEW, OM_SET, OM_UPDATE)

SLIDER_LevelPlace (ULONG)

(V47) Where to display the slider level. Use the PLACETEXT_#? defines from libraries/gadtools.h.

Applicability is (OM_NEW, OM_SET, OM_UPDATE)

SLIDER_LevelJustify (ULONG)

(V47) Justification of slider level display. Either SLJ_LEFT, SLJ_CENTER or SLJ_RIGHT.

Applicability is (OM_NEW, OM_SET, OM_UPDATE)

SLIDER_LevelDomain (CONST_STRPTR)

(V47) Domain string to determine maximum level extent.

Applicability is (OM_NEW, OM_SET, OM_UPDATE)

SLIDER_LevelSpace (UWORD)

(V47) Explicit specification of level display extent.

Applicability is (OM_NEW, OM_SET, OM_UPDATE)

SLIDER_LevelHook (struct Hook *)

(V47) Hook which is invoked to pre-process the level value before it goes through the format string.

Your hook function will be called as follows:

APTR Func(struct Hook *hook, APTR slider, struct TagItem *tags);

A0 A2 A1

The object is the slider gadget. The message is a tag list with GA_ID, SLIDER_Level, SLIDER_Min and SLIDER_Max. The hook should return a type which matches the format specifier. For example, a LONG when SLIDER_LevelFormat contains "%ld" or a CONST_STRPTR when SLIDER_LevelFormat contains "%s".

Applicability is (OM_NEW, OM_SET, OM_UPDATE)

SLIDER_LevelMaxLen (UWORD)

(V47) Maximum possible length (in characters) of level.

Defaults to 3.

Applicability is (OM_NEW, OM_SET, OM_UPDATE)

SLIDER_NotifyDisable (BOOL)

(V47) Notify GA_Disabled attribute changes to target.

Defaults to TRUE.

Applicability is (OM_NEW, OM_SET, OM_UPDATE)

SLIDER_InitDispHook (BOOL)

(V47) Invoke SLIDER_DispHook immediately whenever a new hook function is passed to the gadget. Defaults to FALSE.

Applicability is (OM_NEW, OM_SET, OM_UPDATE)