gtk-0.12.4: Binding to the Gtk+ graphical user interface library.

Portability | portable (depends on GHC)
Stability | provisional
Maintainer | gtk2hs-users@lists.sourceforge.net
Safe Haskell | None

Graphics.UI.Gtk.Entry.HScale

Contents

- Detail
- Class Hierarchy
- Types
- Constructors

Description

A horizontal slider widget for selecting a value from a range

Synopsis

- data HScale
- class ScaleClass o => HScaleClass o
- castToHScale :: GObjectClass obj => obj -> HScale
- gTypeHScale :: GType
- toHScale :: HScaleClass o => o -> HScale
- hScaleNew :: Adjustment -> IO HScale
- hScaleNewWithRange :: Double -> Double -> Double -> IO HScale

# Detail

The `HScale` widget is used to allow the user to select a value using a horizontal slider. To create one, use `hScaleNewWithRange`.

The position to show the current value, and the number of decimal places shown can be set using the parent `Scale` class's functions.

# Class Hierarchy

     | GObject
     | +----Object
     | +----Widget
     | +----Range
     | +----Scale
     | +----HScale

# Types

data HScale

Instances

Eq HScale |
Ord HScale |
GObjectClass HScale |
HScaleClass HScale |
ScaleClass HScale |
RangeClass HScale |
WidgetClass HScale |
ObjectClass HScale |

class ScaleClass o => HScaleClass o

Instances

HScaleClass HScale |

castToHScale :: GObjectClass obj => obj -> HScale

gTypeHScale :: GType

toHScale :: HScaleClass o => o -> HScale

# Constructors

hScaleNew

Arguments

:: Adjustment | `adjustment` - the `Adjustment` which sets the range of the scale.
-> IO HScale |

Creates a new `HScale`.

hScaleNewWithRange

Arguments

:: Double | `min` - minimum value
-> Double | `max` - maximum value
-> Double | `step` - step increment (tick size) used with keyboard shortcuts
-> IO HScale |

Creates a new horizontal scale widget that lets the user input a number between `min` and `max` (including `min` and `max`) with the increment `step`. `step` must be nonzero; it's the distance the slider moves when using the arrow keys to adjust the scale value.

Note that the way in which the precision is derived works best if `step` is a power of ten. If the resulting precision is not suitable for your needs, use `scaleSetDigits` to correct it.