Class

# MobileSlider

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## Description

A control with a draggable slider than can be used to change a value.

## Properties

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| Name                                                  | Type                                                          | Read-Only | Shared |
|-------------------------------------------------------|---------------------------------------------------------------|-----------|--------|
| `AccessibilityHint<mobileslider.accessibilityhint>`   | `String</api/data_types/string>`                              |           |        |
| `AccessibilityLabel<mobileslider.accessibilitylabel>` | `String</api/data_types/string>`                              |           |        |
| `ControlCount<mobileslider.controlcount>`             | `Integer</api/data_types/integer>`                            | ✓         |        |
| `Enabled<mobileslider.enabled>`                       | `Boolean</api/data_types/boolean>`                            |           |        |
| `Height<mobileslider.height>`                         | `Integer</api/data_types/integer>`                            | ✓         |        |
| `Left<mobileslider.left>`                             | `Integer</api/data_types/integer>`                            | ✓         |        |
| `LockBottom<mobileslider.lockbottom>`                 | `Boolean</api/data_types/boolean>`                            |           |        |
| `LockLeft<mobileslider.lockleft>`                     | `Boolean</api/data_types/boolean>`                            |           |        |
| `LockRight<mobileslider.lockright>`                   | `Boolean</api/data_types/boolean>`                            |           |        |
| `LockTop<mobileslider.locktop>`                       | `Boolean</api/data_types/boolean>`                            |           |        |
| `MaximumValue<mobileslider.maximumvalue>`             | `Double</api/data_types/double>`                              |           |        |
| `MinimumValue<mobileslider.minimumvalue>`             | `Double</api/data_types/double>`                              |           |        |
| `Name<mobileslider.name>`                             | `String</api/data_types/string>`                              | ✓         |        |
| `Parent<mobileslider.parent>`                         | `MobileUIControl</api/user_interface/mobile/mobileuicontrol>` | ✓         |        |
| `TintColor<mobileslider.tintcolor>`                   | `ColorGroup</api/graphics/colorgroup>`                        |           |        |
| `Top<mobileslider.top>`                               | `Integer</api/data_types/integer>`                            | ✓         |        |
| `Value<mobileslider.value>`                           | `Double</api/data_types/double>`                              |           |        |
| `Visible<mobileslider.visible>`                       | `Boolean</api/data_types/boolean>`                            |           |        |
| `Width<mobileslider.width>`                           | `Integer</api/data_types/integer>`                            | ✓         |        |

## Methods

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| Name                                              | Parameters                                                                                                                                                | Returns                                                       | Shared |
|---------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------|--------|
| `AddConstraint<mobileslider.addconstraint>`       | constraint As `iOSLayoutConstraint</api/ios/ioslayoutconstraint>`, name As `String</api/data_types/string>` = ""                                          |                                                               |        |
| `AddControl<mobileslider.addcontrol>`             | child As `MobileUIControl</api/user_interface/mobile/mobileuicontrol>`, isBeingAdded As `Boolean</api/data_types/boolean>` = `False</api/language/false>` |                                                               |        |
| `ClearFocus<mobileslider.clearfocus>`             |                                                                                                                                                           |                                                               |        |
| `Constraint<mobileslider.constraint>`             | name As `String</api/data_types/string>`                                                                                                                  | `iOSLayoutConstraint</api/ios/ioslayoutconstraint>`           |        |
| `ControlAt<mobileslider.controlat>`               | index As `Integer</api/data_types/integer>`                                                                                                               | `MobileUIControl</api/user_interface/mobile/mobileuicontrol>` |        |
| `Controls<mobileslider.controls>`                 |                                                                                                                                                           | `Iterable</api/language/iterable>`                            |        |
| `Handle<mobileslider.handle>`                     |                                                                                                                                                           | `Ptr</api/data_types/additional_types/ptr>`                   |        |
| `Refresh<mobileslider.refresh>`                   |                                                                                                                                                           |                                                               |        |
| `RemoveConstraint<mobileslider.removeconstraint>` | constraint As `iOSLayoutConstraint</api/ios/ioslayoutconstraint>`                                                                                         |                                                               |        |
|                                                   | name As `String</api/data_types/string>`                                                                                                                  |                                                               |        |
| `RemoveControl<mobileslider.removecontrol>`       | child As `MobileUIControl</api/user_interface/mobile/mobileuicontrol>`                                                                                    |                                                               |        |
| `SetFocus<mobileslider.setfocus>`                 |                                                                                                                                                           |                                                               |        |

## Events

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| Name                                      | Parameters | Returns |
|-------------------------------------------|------------|---------|
| `Closing<mobileslider.closing>`           |            |         |
| `Opening<mobileslider.opening>`           |            |         |
| `ValueChanged<mobileslider.valuechanged>` |            |         |

## Property descriptions

<div id="mobileslider.accessibilityhint">

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MobileSlider.AccessibilityHint

**AccessibilityHint** As `String</api/data_types/string>`

> The accessibility hint is a longer description that is read aloud when VoiceOver is enabled.
>
> ``` xojo
> Me.AccessibilityHint = "Click to calculate the value and display the next screen."
> ```
>
> <div class="important">
>
> <div class="title">
>
> Important
>
> </div>
>
> This property is not currently supported for Android.
>
> </div>

<div id="mobileslider.accessibilitylabel">

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MobileSlider.AccessibilityLabel

**AccessibilityLabel** As `String</api/data_types/string>`

> The accessibility label of of a control is a short name that is read aloud when VoiceOver is enabled.
>
> ``` xojo
> Me.AccessibilityLabel = "Calculate the value."
> ```

<div id="mobileslider.controlcount">

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MobileSlider.ControlCount

**ControlCount** As `Integer</api/data_types/integer>`

> The number of child controls in the control.
>
> This property is read-only.
>
> <div class="important">
>
> <div class="title">
>
> Important
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> </div>
>
> This property is supported for iOS only.
>
> </div>

<div id="mobileslider.enabled">

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MobileSlider.Enabled

**Enabled** As `Boolean</api/data_types/boolean>`

> Indicates whether the control is enabled or disabled.
>
> Disable the button:
>
> ``` xojo
> Button1.Enabled = False
> ```

<div id="mobileslider.height">

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MobileSlider.Height

**Height** As `Integer</api/data_types/integer>`

> The height of the control.
>
> This property is read-only on iOS.

<div id="mobileslider.left">

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MobileSlider.Left

**Left** As `Integer</api/data_types/integer>`

> The left position of the control.
>
> This property is read-only on iOS.

<div id="mobileslider.lockbottom">

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MobileSlider.LockBottom

**LockBottom** As `Boolean</api/data_types/boolean>`

> Determines whether the bottom edge of the control should stay at a set distance from the bottom edge of the parent control, if there is one, or the owning screen.
>
> <div class="important">
>
> <div class="title">
>
> Important
>
> </div>
>
> This property is not currently supported for iOS. Use constraints instead.
>
> </div>
>
> This property can be set in the control's Inspector. The following example sets it in code.
>
> ``` xojo
> Me.LockBottom = True
> ```

<div id="mobileslider.lockleft">

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MobileSlider.LockLeft

**LockLeft** As `Boolean</api/data_types/boolean>`

> Determines whether the left edge of the control should stay at a set distance from the left edge of the parent control, if there is one, or the owning screen.
>
> LockLeft and Locktop default to `True</api/language/true>` when you add a new control to a screen. Existing controls will be altered only if LockRight and/or LockBottom are not set. *LockLeft* has no effect unless *LockRight* is `True</api/language/true>`.
>
> <div class="important">
>
> <div class="title">
>
> Important
>
> </div>
>
> This property is not currently supported for iOS. Use constraints instead.
>
> </div>
>
> This property can be set in the control's Inspector. The following example sets it in code.
>
> ``` xojo
> Me.LockLeft = True
> ```

<div id="mobileslider.lockright">

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MobileSlider.LockRight

**LockRight** As `Boolean</api/data_types/boolean>`

> Determines whether the right edge of the control should stay at a set distance from the right edge of the parent control, if there is one, or the owning screen.
>
> <div class="important">
>
> <div class="title">
>
> Important
>
> </div>
>
> This property is not currently supported for iOS. Use constraints instead.
>
> </div>
>
> This property can be set in the control's Inspector. The following example sets it in code.
>
> ``` xojo
> Me.LockRight = True
> ```

<div id="mobileslider.locktop">

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MobileSlider.LockTop

**LockTop** As `Boolean</api/data_types/boolean>`

> Determines whether the top edge of the control should stay at a set distance from the top edge of the parent control, if there is one, or the owning screen.
>
> LockTop and LockLeft default to `True</api/language/true>` when you add a control to a screen. Existing controls will be altered only if LockRight and/or LockBottom are not set. *LockTop* has no effect unless *LockBottom* is `True</api/language/true>`.
>
> <div class="important">
>
> <div class="title">
>
> Important
>
> </div>
>
> This property is not currently supported for iOS. Use constraints instead.
>
> </div>
>
> This property can be set in the control's Inspector. The following example sets it in code.
>
> ``` xojo
> Me.LockTop = True
> ```

<div id="mobileslider.maximumvalue">

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MobileSlider.MaximumValue

**MaximumValue** As `Double</api/data_types/double>`

> The maximum value of the slider.
>
> The default value is 100.
>
> Change the maximum slider value:
>
> ``` xojo
> MySlider.MaximumValue = 50
> ```

<div id="mobileslider.minimumvalue">

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MobileSlider.MinimumValue

**MinimumValue** As `Double</api/data_types/double>`

> The minimum value of the slider.
>
> The default value is 0.
>
> Change the minimum slider value:
>
> ``` xojo
> MySlider.MinimumValue = -50
> ```

<div id="mobileslider.name">

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MobileSlider.Name

**Name** As `String</api/data_types/string>`

> The name of the control.
>
> This property is read-only.

<div id="mobileslider.parent">

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MobileSlider.Parent

**Parent** As `MobileUIControl</api/user_interface/mobile/mobileuicontrol>`

> The parent (sometimes called a "Super") class of the control.
>
> This property is read-only.

<div id="mobileslider.tintcolor">

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MobileSlider.TintColor

**TintColor** As `ColorGroup</api/graphics/colorgroup>`

> Changes a control's tint color.
>
> On iOS, the following controls support TintColor:
>
> | Enum        | Description                                                                  |
> |-------------|------------------------------------------------------------------------------|
> | PopupMenu   | The background color will be drawn in the TintColor.                         |
> | ProgressBar | The area indicating the value of the control will be drawn in the TintColor. |
> | Slider      | The area indicating the value of the control will be drawn in the TintColor. |
> | TextArea    | The cursor and text highlight color will be drawn in the TintColor.          |
> | TextField   | The cursor and text highlight color will be drawn in the TintColor.          |

<div id="mobileslider.top">

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MobileSlider.Top

**Top** As `Integer</api/data_types/integer>`

> The top position of the control.
>
> This property is read-only on iOS.

<div id="mobileslider.value">

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MobileSlider.Value

**Value** As `Double</api/data_types/double>`

> The current value of the slider.
>
> Set this value to move the slider position. If Value is greater than the `MaximumValue<mobileslider.maximumvalue>`, the `MaximumValue<mobileslider.maximumvalue>` is used. If Value is less than `MinimumValue<mobileslider.minimumvalue>`, then `MinimumValue<mobileslider.minimumvalue>` is used.
>
> Set the initial slider value:
>
> ``` xojo
> MySlider.Value = 25
> ```

<div id="mobileslider.visible">

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MobileSlider.Visible

**Visible** As `Boolean</api/data_types/boolean>`

> Indicates whether the control is visible.
>
> Make a button invisible:
>
> ``` xojo
> Button1.Visible = False
> ```

<div id="mobileslider.width">

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MobileSlider.Width

**Width** As `Integer</api/data_types/integer>`

> The width of the control.
>
> This property is read-only on iOS.

## Method descriptions

<div id="mobileslider.addconstraint">

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MobileSlider.AddConstraint

**AddConstraint**(constraint As `iOSLayoutConstraint</api/ios/ioslayoutconstraint>`, name As `String</api/data_types/string>` = "")

> Adds a *constraint* to the control. The optional *name* parameter can be used to `remove a constraint<mobileuicontrol.removeconstraint>` that was added via code.
>
> This *constraint* is used by child controls that have been added to this control.
>
> <div class="important">
>
> <div class="title">
>
> Important
>
> </div>
>
> This is supported for iOS only.
>
> </div>

<div id="mobileslider.addcontrol">

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MobileSlider.AddControl

**AddControl**(child As `MobileUIControl</api/user_interface/mobile/mobileuicontrol>`, isBeingAdded As `Boolean</api/data_types/boolean>` = `False</api/language/false>`)

> Adds a *child* control to the control. When the value of *isBeingAdded* is `True</api/language/true>`, the Opening event is triggered for the child control being added.
>
> <div class="important">
>
> <div class="title">
>
> Important
>
> </div>
>
> This is supported for iOS only.
>
> </div>

<div id="mobileslider.clearfocus">

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MobileSlider.ClearFocus

**ClearFocus**

> Removes the focus from the control.
>
> ``` xojo
> TextField1.ClearFocus
> ```

<div id="mobileslider.constraint">

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MobileSlider.Constraint

**Constraint**(name As `String</api/data_types/string>`) As `iOSLayoutConstraint</api/ios/ioslayoutconstraint>`

> Gets a reference to a named constraint so that you can modify its settings in code.
>
> <div class="important">
>
> <div class="title">
>
> Important
>
> </div>
>
> This is supported for iOS only.
>
> </div>
>
> Change an existing (and named) constraint of a control on the Screen:
>
> ``` xojo
> ' "TAWidth" is a width constraint for a TextField that has been given
> ' a name in the auto-layout Inspector properties.
> Var c As iOSLayoutConstraint = Self.Constraint("TAWidth")
> c.Offset = 200
> ```

<div id="mobileslider.controlat">

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MobileSlider.ControlAt

**ControlAt**(index As `Integer</api/data_types/integer>`) As `MobileUIControl</api/user_interface/mobile/mobileuicontrol>`

> Gets the child control at the specified *index*.
>
> <div class="important">
>
> <div class="title">
>
> Important
>
> </div>
>
> This is supported for iOS only.
>
> </div>

<div id="mobileslider.controls">

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MobileSlider.Controls

**Controls** As `Iterable</api/language/iterable>`

> Allows you to iterate through all the controls that have been added to this control.
>
> <div class="important">
>
> <div class="title">
>
> Important
>
> </div>
>
> This is supported for iOS only.
>
> </div>

<div id="mobileslider.handle">

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MobileSlider.Handle

**Handle** As `Ptr</api/data_types/additional_types/ptr>`

> The handle to the underlying native OS control.

<div id="mobileslider.refresh">

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MobileSlider.Refresh

**Refresh**

> Marks the control so that it will be redrawn during the next event loop.
>
> Call Refresh to force a Canvas to redraw itself:
>
> ``` xojo
> Canvas1.Refresh
> ```

<div id="mobileslider.removeconstraint">

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MobileSlider.RemoveConstraint

**RemoveConstraint**(constraint As `iOSLayoutConstraint</api/ios/ioslayoutconstraint>`)

> Removes a *constraint* from the control.
>
> <div class="important">
>
> <div class="title">
>
> Important
>
> </div>
>
> This is supported for iOS only.
>
> </div>

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**RemoveConstraint**(name As `String</api/data_types/string>`)

> Removes the constraint with the *name* passed from the `Screen</api/user_interface/mobile/mobilescreen>`.
>
> <div class="important">
>
> <div class="title">
>
> Important
>
> </div>
>
> This is supported for iOS only.
>
> </div>

<div id="mobileslider.removecontrol">

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MobileSlider.RemoveControl

**RemoveControl**(child As `MobileUIControl</api/user_interface/mobile/mobileuicontrol>`)

> Removes the control from the control.
>
> <div class="important">
>
> <div class="title">
>
> Important
>
> </div>
>
> This is supported for iOS only.
>
> </div>

<div id="mobileslider.setfocus">

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MobileSlider.SetFocus

**SetFocus**

> Sets the focus to the control.
>
> ``` xojo
> TextField1.SetFocus
> ```

## Event descriptions

<div id="mobileslider.closing">

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MobileSlider.Closing

**Closing**

> Called when the control's layout is closing.

<div id="mobileslider.opening">

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MobileSlider.Opening

**Opening**

> Called when the control's layout is opening.
>
> This is where you typically put initialization code.
>
> This example in the Opening event of a label sets its text to "Hello":
>
> ``` xojo
> Me.Text = "Hello"
> ```

<div id="mobileslider.valuechanged">

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MobileSlider.ValueChanged

**ValueChanged**

> Called when `Value<mobileslider.value>` is changed.
>
> Update a Label with the value of the Slider as it changes:
>
> ``` xojo
> MyLabel.Text = Me.Value.ToString
> ```

## Compatibility

|                       |        |
|-----------------------|--------|
| **Project Types**     | Mobile |
| **Operating Systems** | All    |

<div class="seealso">

`MobileUIControl</api/user_interface/mobile/mobileuicontrol>` parent class

</div>