Class

# MobileOval

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## Description

This is the standard Oval control.

## Properties

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

## Methods

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

## Events

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| Name                          | Parameters | Returns |
|-------------------------------|------------|---------|
| `Closing<mobileoval.closing>` |            |         |
| `Opening<mobileoval.opening>` |            |         |

## Property descriptions

<div id="mobileoval.accessibilityhint">

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MobileOval.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="mobileoval.accessibilitylabel">

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MobileOval.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="mobileoval.bordercolor">

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MobileOval.BorderColor

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

> The color of the border.

<div id="mobileoval.borderthickness">

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MobileOval.BorderThickness

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

> The thickness (in points) of the border.

<div id="mobileoval.controlcount">

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MobileOval.ControlCount

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

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

<div id="mobileoval.enabled">

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MobileOval.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="mobileoval.fillcolor">

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MobileOval.FillColor

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

> The fill color.

<div id="mobileoval.height">

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MobileOval.Height

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

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

<div id="mobileoval.left">

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MobileOval.Left

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

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

<div id="mobileoval.lockbottom">

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MobileOval.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="mobileoval.lockleft">

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MobileOval.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="mobileoval.lockright">

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MobileOval.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="mobileoval.locktop">

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MobileOval.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="mobileoval.name">

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MobileOval.Name

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

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

<div id="mobileoval.parent">

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MobileOval.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="mobileoval.tintcolor">

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MobileOval.TintColor

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

> Changes a control's tint color.
>
> <div class="important">
>
> <div class="title">
>
> Important
>
> </div>
>
> This is supported for iOS only.
>
> </div>
>
> 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="mobileoval.top">

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MobileOval.Top

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

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

<div id="mobileoval.visible">

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MobileOval.Visible

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

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

<div id="mobileoval.width">

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MobileOval.Width

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

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

## Method descriptions

<div id="mobileoval.addconstraint">

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MobileOval.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="mobileoval.addcontrol">

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MobileOval.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="mobileoval.clearfocus">

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MobileOval.ClearFocus

**ClearFocus**

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

<div id="mobileoval.constraint">

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MobileOval.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="mobileoval.controlat">

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MobileOval.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="mobileoval.controls">

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mobileoval.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="mobileoval.handle">

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MobileOval.Handle

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

> The handle to the underlying native OS control.

<div id="mobileoval.refresh">

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MobileOval.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="mobileoval.removeconstraint">

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MobileOval.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="mobileoval.removecontrol">

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MobileOval.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="mobileoval.setfocus">

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MobileOval.SetFocus

**SetFocus**

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

## Event descriptions

<div id="mobileoval.closing">

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MobileOval.Closing

**Closing**

> Called when the control's layout is closing.

<div id="mobileoval.opening">

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MobileOval.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"
> ```

## Compatibility

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

<div class="seealso">

`MobileUIControl</api/user_interface/mobile/mobileuicontrol>` parent class; `MobileRectangle</api/user_interface/mobile/mobilerectangle>` control

</div>