InkToolbar.InitialControls Property

  • Reference

Definition

Namespace:
Windows.UI.Xaml.Controls
Edit

Gets or sets the collection of built-in buttons added to the InkToolbar at initialization.

This property overrides the default collection of built-in buttons.

By default, the InkToolbar consists of two distinct groups of button types:

Feature selection is mutually exclusive.

Features are not mutually exclusive and can be used concurrently with other active tools.

public:
 property InkToolbarInitialControls InitialControls { InkToolbarInitialControls get(); void set(InkToolbarInitialControls value); };
InkToolbarInitialControls InitialControls();

void InitialControls(InkToolbarInitialControls value);
public InkToolbarInitialControls InitialControls { get; set; }
var inkToolbarInitialControls = inkToolbar.initialControls;
inkToolbar.initialControls = inkToolbarInitialControls;
Public Property InitialControls As InkToolbarInitialControls

Property Value

InkToolbarInitialControls

The collection of built-in buttons to add to the InkToolbar.

Examples

To specify which built-in buttons are displayed at initialization:

  1. Set InitialControls to None.
  2. Add the individual buttons.
  3. Specify the InkToolbar UI experience, such as the default button. The following examples (both XAML and code-behind) show how to clear the default buttons from the InkToolber, add ballpoint pen, pencil, and eraser buttons, and set the default button to pencil.

XAML

<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
    <Grid.RowDefinitions>
        <RowDefinition Height="Auto"/>
        <RowDefinition Height="*"/>
    </Grid.RowDefinitions>
    <StackPanel x:Name="HeaderPanel" Orientation="Horizontal" Grid.Row="0">
        <TextBlock x:Name="Header" 
                   Text="Basic ink sample" 
                   Style="{ThemeResource HeaderTextBlockStyle}" 
                   Margin="10,0,0,0" />
    </StackPanel>
    <Grid Grid.Row="1">
        <Image Source="Assets\StoreLogo.png" />
        <!-- Clear the default InkToolbar buttons by setting InitialControls to None. -->
        <!-- Set the active tool to the pencil button. -->
        <InkCanvas x:Name="inkCanvas" />
        <InkToolbar x:Name="inkToolbar" 
                    VerticalAlignment="Top" 
                    TargetInkCanvas="{x:Bind inkCanvas}" 
                    InitialControls="None"
                    ActiveTool="{x:Bind pencilButton}">
            <!-- 
             Add only the ballpoint pen, pencil, and eraser. 
             Note that the buttons are added to the toolbar in the order 
             defined by the framework, not the order we specify here.
            -->
            <InkToolbarEraserButton />
            <InkToolbarBallpointPenButton />
            <InkToolbarPencilButton x:Name="pencilButton"/>
        </InkToolbar>
    </Grid>
</Grid>

<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
    <Grid.RowDefinitions>
        <RowDefinition Height="Auto"/>
        <RowDefinition Height="*"/>
    </Grid.RowDefinitions>
    <StackPanel x:Name="HeaderPanel" Orientation="Horizontal" Grid.Row="0">
        <TextBlock x:Name="Header" 
                   Text="Basic ink sample" 
                   Style="{ThemeResource HeaderTextBlockStyle}" 
                   Margin="10,0,0,0" />
    </StackPanel>
    <Grid Grid.Row="1">
        <Image Source="Assets\StoreLogo.png" />
        <InkCanvas x:Name="inkCanvas" />
        <InkToolbar x:Name="inkToolbar" VerticalAlignment="Top" TargetInkCanvas="{x:Bind inkCanvas}" />
    </Grid>
</Grid>

/// <summary>
/// An empty page that can be used on its own or navigated to within a Frame.
/// Here, we set up InkToolbar event listeners.
/// </summary>
public MainPage_CodeBehind()
{
    this.InitializeComponent();
    // Add handlers for InkToolbar events.
    inkToolbar.Loading += inkToolbar_Loading;
    //inkToolbar.Loaded += inkToolbar_Loaded;
}

/// <summary>
/// Handles the Loading event of the InkToolbar. 
/// Here, we identify the buttons to include on the InkToolbar.
/// </summary>
/// <param name="sender">The InkToolbar</param>
/// <param name="args">The InkToolbar event data. 
/// If there is no event data, this parameter is null</param>
private void inkToolbar_Loading(FrameworkElement sender, object args)
{
    // Clear all built-in buttons from the InkToolbar.
    inkToolbar.InitialControls = InkToolbarInitialControls.None;

    // Add only the ballpoint pen, pencil, and eraser.
    // Note that the buttons are added to the toolbar in the order
    // defined by the framework, not the order we specify here.
    InkToolbarBallpointPenButton ballpoint = new InkToolbarBallpointPenButton();
    InkToolbarPencilButton pencil = new InkToolbarPencilButton();
    InkToolbarEraserButton eraser = new InkToolbarEraserButton();
    inkToolbar.Children.Add(eraser);
    inkToolbar.Children.Add(ballpoint);
    inkToolbar.Children.Add(pencil);
}

/// <summary>
/// Handle the Loaded event of the InkToolbar.
/// By default, the active tool is set to the first tool on the toolbar.
/// Here, we set the active tool to the pencil button. 
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void inkToolbar_Loaded(object sender, RoutedEventArgs e)
{
    InkToolbarToolButton pencilButton = inkToolbar.GetToolButton(InkToolbarTool.Pencil);
    inkToolbar.ActiveTool = pencilButton;
}

Remarks

Default built-in buttons, or those specified through InitialControls, are not added to the Children property.

Built-in or custom buttons added programmatically or declared in XAML, are added to the Children property.

Built-in buttons are displayed in a pre-determined order within their respective control groups. Custom buttons are added to the appropriate control group in the order specified, after all built-in buttons.

Applies to

See also