WPF Addict

Override System.Windows.Interactivity.EventTrigger

13/04/2017 admin Aucun commentaire

for capturing message for example

public class EventTrigger : System.Windows.Interactivity.EventTrigger
{
    #region CaptureEvent (DP SHORT)
    public bool CaptureEvent { get { return (bool)GetValue(CaptureEventProperty); } set { SetValue(CaptureEventProperty, value); } }
    public static readonly DependencyProperty CaptureEventProperty = DependencyProperty.Register("CaptureEvent", typeof(bool), typeof(EventTrigger), new PropertyMetadata(false));
    #endregion 

    protected override void OnEvent(EventArgs eventArgs)
    {
        if (eventArgs is RoutedEventArgs)
        {
            (eventArgs as RoutedEventArgs).Handled = CaptureEvent;
        }
        base.OnEvent(eventArgs);
    }
}

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public class EventTrigger : System.Windows.Interactivity.EventTrigger

{

#region CaptureEvent (DP SHORT)

public bool CaptureEvent { get { return (bool)GetValue(CaptureEventProperty); } set { SetValue(CaptureEventProperty, value); } }

public static readonly DependencyProperty CaptureEventProperty = DependencyProperty.Register("CaptureEvent", typeof(bool), typeof(EventTrigger), new PropertyMetadata(false));

#endregion

protected override void OnEvent(EventArgs eventArgs)

{

if (eventArgs is RoutedEventArgs)

{

(eventArgs as RoutedEventArgs).Handled = CaptureEvent;

}

base.OnEvent(eventArgs);

}

if you have a rectangle in dockpanel and you want to capturing MouseEvent, on clicking on rectangle the event if is not captured is transmited to Panel …

  <DockPanel Background="Red"
                   LastChildFill="False"
                   Margin="0,10,10.4,10.4"
                   HorizontalAlignment="Right"
                   Width="186"
                   Grid.RowSpan="2">
            <Rectangle Fill="Green"
                       DockPanel.Dock="Top"
                       Height="50">
                <interactivity:Interaction.Triggers>
                    <local:EventTrigger EventName="MouseDown"
                                                CaptureEvent="True">
                        <interactivity:InvokeCommandAction Command="{Binding ClickCommand, ElementName=win}"
                                                           CommandParameter="{x:Null}" />
                    </local:EventTriggerExtended>
                </interactivity:Interaction.Triggers>
            </Rectangle>
            <interactivity:Interaction.Triggers>
                <local:EventTrigger EventName="MouseDown">
                    <interactivity:InvokeCommandAction Command="{Binding Click2Command, ElementName=win}"
                                                       CommandParameter="{x:Null}" />
                </local:EventTriggerExtended>
            </interactivity:Interaction.Triggers>
        </DockPanel>

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<DockPanel Background="Red"

LastChildFill="False"

Margin="0,10,10.4,10.4"

HorizontalAlignment="Right"

Width="186"

Grid.RowSpan="2">

<Rectangle Fill="Green"

DockPanel.Dock="Top"

Height="50">

<interactivity:Interaction.Triggers>

<local:EventTrigger EventName="MouseDown"

CaptureEvent="True">

<interactivity:InvokeCommandAction Command="{Binding ClickCommand, ElementName=win}"

CommandParameter="{x:Null}" />

</local:EventTriggerExtended>

</interactivity:Interaction.Triggers>

</Rectangle>

<interactivity:Interaction.Triggers>

<local:EventTrigger EventName="MouseDown">

<interactivity:InvokeCommandAction Command="{Binding Click2Command, ElementName=win}"

CommandParameter="{x:Null}" />

</local:EventTriggerExtended>

</interactivity:Interaction.Triggers>

</DockPanel>

white this extend you can capture event on rectangle for not transmiting to parent … (available only for bubble strategy routed event)

Categories: Non classé Tags:

SolidColorBrush from another SolidColorBrush

12/04/2017 admin Aucun commentaire

if you have initial SolidColorBrush like

<SolidColorBrush x:Key="ycolor"
                         Color="green" />

1 2	<SolidColorBrush x:Key="ycolor" Color="green" />

you can get the color or create another SolidColorBrush and using color

<SolidColorBrush x:Key="ycolor_copy"
                 Color="{Binding Source={StaticResource ycolor}, Path=Color}" />

1 2	<SolidColorBrush x:Key="ycolor_copy" Color="{Binding Source={StaticResource ycolor}, Path=Color}" />

Categories: Non classé Tags:

Override custom color

12/04/2017 admin Aucun commentaire

for overriding custom color like

<SolidColorBrush x:Key="xcolor"
                 Color="#6D9DFF" />

1 2	<SolidColorBrush x:Key="xcolor" Color="#6D9DFF" />

redefine the same SolidColorBrush with the same Key

 <!-- using resource -->
        <Border BorderBrush="Black"
        BorderThickness="1"
        HorizontalAlignment="Left"
        Height="43"
        Background="{StaticResource xcolor}"
        Margin="366,177,0,0"
        VerticalAlignment="Top"
        Width="116" />
        <!-- redefine resource -->
        <Grid Margin="366,225,0,0"
              HorizontalAlignment="Left"
              Width="116"
              Height="43"
              VerticalAlignment="Top">
            <Grid.Resources>
                <SolidColorBrush x:Key="xcolor"
                                 Color="red" />
            </Grid.Resources>
            <Border BorderBrush="Black"
                    BorderThickness="1"
                    Background="{StaticResource xcolor}" />
        </Grid>

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<Border BorderBrush="Black"

BorderThickness="1"

HorizontalAlignment="Left"

Height="43"

Background="{StaticResource xcolor}"

Margin="366,177,0,0"

VerticalAlignment="Top"

Width="116" />

<Grid Margin="366,225,0,0"

HorizontalAlignment="Left"

Width="116"

Height="43"

VerticalAlignment="Top">

<Grid.Resources>

<SolidColorBrush x:Key="xcolor"

Color="red" />

</Grid.Resources>

<Border BorderBrush="Black"

BorderThickness="1"

Background="{StaticResource xcolor}" />

</Grid>

Categories: wpf Tags:

Archive

Override System.Windows.Interactivity.EventTrigger

SolidColorBrush from another SolidColorBrush

Override custom color

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