How to create a trigger, which if mouse hover that textblock, the text will change color.
just try this with background or foreground
<TextBlock Text="Hello" Height="20">
<TextBlock.Style>
<Style TargetType="TextBlock">
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="TextBlock.Background" Value="red" />
</Trigger>
</Style.Triggers>
</Style>
</TextBlock.Style>
</TextBlock>
<Window x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Window.Resources>
<Style x:Key="TextBlockMouseOverStyle" TargetType="{x:Type TextBlock}">
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Foreground" Value="Red" />
</Trigger>
</Style.Triggers>
</Style>
</Window.Resources>
<Grid>
<TextBlock Background="Blue" Style="{StaticResource TextBlockMouseOverStyle}" Text="Foo" />
</Grid>
</Window>
Related
I am using MahApps.Metro in my WPF app. The default behavior of the title bar of its MetroWindow is that any icon inside it has low opacity (dimmed) display unless you mouseover the icon. Even if you don't mouseover the icon, I would like to look it the same as when you mouseover it. How can we achieve this?
With mouseover on CupCakes icon [I would like it to look the same even without mouseover]:
Without mouseover:
MetroWindow.xaml:
<mah:MetroWindow x:Class="WPF_Mah_Metro_Test.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mah="clr-namespace:MahApps.Metro.Controls;assembly=MahApps.Metro"
xmlns:iconPacks="http://metro.mahapps.com/winfx/xaml/iconpacks"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:WPF_Mah_Metro_Test"
mc:Ignorable="d"
GlowBrush="{DynamicResource MahApps.Brushes.Accent}"
ResizeMode="CanResizeWithGrip"
WindowStartupLocation="CenterScreen"
Height="450" Width="800">
<mah:MetroWindow.LeftWindowCommands>
<mah:WindowCommands>
<Button x:Name="btnTest" Click="btnTest_Click" ToolTip="Open up the GitHub site">
<iconPacks:PackIconModern Width="22" Height="22" Kind="SocialGithubOctocat" />
</Button>
</mah:WindowCommands>
</mah:MetroWindow.LeftWindowCommands>
<mah:MetroWindow.RightWindowCommands>
<mah:WindowCommands>
<Button x:Name="btnTest1" Click="btnTest1_Click" Content="Deploy CupCakes">
<Button.ContentTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<iconPacks:PackIconModern Width="22" Height="22" VerticalAlignment="Center" Kind="FoodCupcake" />
<TextBlock Margin="4 0 0 0" VerticalAlignment="Center" Text="{Binding}" />
</StackPanel>
</DataTemplate>
</Button.ContentTemplate>
</Button>
</mah:WindowCommands>
</mah:MetroWindow.RightWindowCommands>
<Grid>
</Grid>
</mah:MetroWindow>
To override the styles of the inner controls of the WindowCommands you must create your own style for it:
<Style x:Key="Styles.WindowCommands.Custom"
BasedOn="{StaticResource MahApps.Styles.WindowCommands}"
TargetType="{x:Type mah:WindowCommands}">
<Style.Resources>
<ResourceDictionary>
<Style BasedOn="{StaticResource MahApps.Styles.Button.WindowCommands}" TargetType="{x:Type Button}">
<Setter Property="Opacity" Value="1" />
</Style>
<Style BasedOn="{StaticResource MahApps.Styles.ToggleButton.WindowCommands}" TargetType="{x:Type ToggleButton}">
<Setter Property="Opacity" Value="1" />
<Style.Triggers>
<Trigger Property="IsChecked" Value="True">
<Setter Property="Opacity" Value="1" />
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Opacity" Value="1" />
</Trigger>
</Style.Triggers>
</Style>
<Style BasedOn="{StaticResource MahApps.Styles.SplitButton.WindowCommands}" TargetType="{x:Type mah:SplitButton}">
<Setter Property="Opacity" Value="1" />
</Style>
<Style BasedOn="{StaticResource MahApps.Styles.DropDownButton.WindowCommands}" TargetType="{x:Type mah:DropDownButton}">
<Setter Property="Opacity" Value="1" />
</Style>
</ResourceDictionary>
</Style.Resources>
</Style>
Now if you put this key to your `App.xaml you can use it in your App like:
<mah:MetroWindow.LeftWindowCommands>
<mah:WindowCommands Style="{StaticResource Styles.WindowCommands.Custom}">
</mah:WindowCommands>
</mah:MetroWindow.LeftWindowCommands>
<mah:MetroWindow.RightWindowCommands>
<mah:WindowCommands Style="{StaticResource Styles.WindowCommands.Custom}">
</mah:WindowCommands>
</mah:MetroWindow.RightWindowCommands>
Another solution could be to make a style for the Button directly.
Note: Namespace for mah is xmlns:mah="http://metro.mahapps.com/winfx/xaml/controls"
I am trying to make window frame appear when user hovers "mybutton". This should work but for some reason it is not. What am I missing?
<Window x:Class="test2.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525" WindowStyle="None" Loaded="ShellWindow_SourceInitialized" x:Name="mywindow">
<Window.Resources>
<Style TargetType="{x:Type Window}">
<Style.Triggers>
<DataTrigger Binding="{Binding Path=IsMouseOver, ElementName=mybutton}" Value="True">
<Setter Property="ResizeMode" Value="CanResize" />
</DataTrigger>
<DataTrigger Binding="{Binding Path=IsMouseOver, ElementName=mybutton}" Value="False">
<Setter Property="ResizeMode" Value="NoResize" />
</DataTrigger>
</Style.Triggers>
</Style>
</Window.Resources>
<Grid Name="mygrid" Loaded="Grid_Loaded">
<Button Name="mybutton" Content="Button" HorizontalAlignment="Left" VerticalAlignment="Top" Width="75"/>
</Grid>
(In case you are wondering what those "Loaded" functions are, they remove chrome while keeping the shadow and allowtransparency=false
http://marcin.floryan.pl/blog/2010/08/wpf-drop-shadow-with-windows-dwm-api)
At the end it will not be button but will react on whole window border (I can not find better way to enable resizing while removing all chrome)
In the style TargetType should be MainWindow
<Style TargetType="{x:Type local:MainWindow}">
where local has to be mapped to your namespace:
xmlns:local="clr-namespace:test2"
myButton is defined after style. XAML parser is not that smart. User the following XAML to get your intended behavior:
<Window x:Class="test2.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525" WindowStyle="None" Loaded="ShellWindow_SourceInitialized" x:Name="mywindow">
<Grid Name="mygrid" Loaded="Grid_Loaded" >
<Button Name="mybutton" Content="Button" HorizontalAlignment="Left" VerticalAlignment="Top" Width="75"/>
</Grid>
<Window.Style>
<Style TargetType="{x:Type Window}">
<Style.Triggers>
<DataTrigger Binding="{Binding Path=IsMouseOver, ElementName=mybutton}" Value="True">
<Setter Property="ResizeMode" Value="CanResize" />
</DataTrigger>
<DataTrigger Binding="{Binding Path=IsMouseOver, ElementName=mybutton}" Value="False">
<Setter Property="ResizeMode" Value="NoResize" />
</DataTrigger>
</Style.Triggers>
</Style>
</Window.Style>
</Window>
have a very easy question, but it seems I could not find the answer on the Internet for it. Possibly because I am not looking in the right places.
I have a user control with a DependencyProperty of a custom enum type.
In XAML I would like to Show/Hide elements based on the value of the enum type. I tried to do this with DataTriggers but I fail to get it working.
<UserControl x:Class="WpfApplication1.DisplayIcon"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
d:DesignHeight="50" d:DesignWidth="50"
x:Name="control">
<UserControl.Resources>
<Style TargetType="Ellipse">
<Setter Property="Visibility" Value="Collapsed"/>
<Style.Triggers>
<DataTrigger Value="Ellipse" Binding="{Binding MyIconType, ElementName=control}">
<Setter Property="Visibility" Value="Visible"/>
</DataTrigger>
</Style.Triggers>
</Style>
<Style TargetType="Rectangle">
<Setter Property="Visibility" Value="Collapsed"/>
<Style.Triggers>
<DataTrigger Value="Rectangle" Binding="{Binding MyIconType, ElementName=control}">
<Setter Property="Visibility" Value="Visible"/>
</DataTrigger>
</Style.Triggers>
</Style>
</UserControl.Resources>
<Grid>
<Ellipse x:Name="el1" Fill="Red" Width="30" Height="30" />
<Rectangle x:Name="el2" Fill="Green" Width="20" Height="20" />
<TextBlock Text="{Binding MyIconType, ElementName=control}" Margin="0,40,0,0"/>
</Grid></UserControl>
And my code behind looks like this:
public enum IconType
{
Ellipse,
Rectangle
}
public partial class DisplayIcon : UserControl
{
public DisplayIcon()
{
InitializeComponent();
}
public IconType MyIconType
{
get { return (IconType)GetValue(MyIconTypeProperty); }
set { SetValue(MyIconTypeProperty, value); }
}
// Using a DependencyProperty as the backing store for MyIconType. This enables animation, styling, binding, etc...
public static readonly DependencyProperty MyIconTypeProperty =
DependencyProperty.Register("MyIconType", typeof(IconType), typeof(DisplayIcon), new PropertyMetadata(IconType.Ellipse));
}
Can someone help me?
Thanks,
Jim
You can create a Style for each element and define the Triggers there:
<UserControl x:Class="WpfApplication1.DisplayIcon"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
d:DesignHeight="50" d:DesignWidth="50"
x:Name="control">
<UserControl.Resources>
<Style TargetType="Ellipse">
<Style.Triggers>
<DataTrigger Value="Rectangle" Binding="{Binding MyIconType, ElementName=control}">
<Setter Property="Visibility" Value="Collapsed"/>
</DataTrigger>
</Style.Triggers>
</Style>
<Style TargetType="Rectangle">
<Style.Triggers>
<DataTrigger Value="Ellipse" Binding="{Binding MyIconType, ElementName=control}">
<Setter Property="Visibility" Value="Collapsed"/>
</DataTrigger>
</Style.Triggers>
</Style>
</UserControl.Resources>
<Grid>
<Ellipse x:Name="el1" Fill="Red" Width="20" Height="20"/>
<Rectangle Grid.Row="1" x:Name="el2" Fill="Green" Width="20" Height="20"/>
</Grid>
EDIT:
Infact it would probably make more sense to invert the Visibility logic. That way you can add shapes without needing to modify the code:
<UserControl x:Class="WpfApplication1.DisplayIcon"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
d:DesignHeight="50" d:DesignWidth="50"
x:Name="control">
<UserControl.Resources>
<Style TargetType="Ellipse">
<Setter Property="Visibility" Value="Collapsed"/>
<Style.Triggers>
<DataTrigger Value="Ellipse" Binding="{Binding MyIconType, ElementName=control}">
<Setter Property="Visibility" Value="Visible"/>
</DataTrigger>
</Style.Triggers>
</Style>
<Style TargetType="Rectangle">
<Setter Property="Visibility" Value="Collapsed"/>
<Style.Triggers>
<DataTrigger Value="Rectangle" Binding="{Binding MyIconType, ElementName=control}">
<Setter Property="Visibility" Value="Visible"/>
</DataTrigger>
</Style.Triggers>
</Style>
</UserControl.Resources>
<Grid>
<Ellipse x:Name="el1" Fill="Red" Width="20" Height="20"/>
<Rectangle x:Name="el2" Fill="Green" Width="20" Height="20"/>
</Grid>
this is my code:
<Window x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Grid>
<ListBox ItemsSource="{Binding Persons}">
<ListBox.ItemContainerStyle>
<Style TargetType="ListBoxItem">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<Border Background="White" BorderThickness="5" Name="Bd">
<Border.Style>
<Style TargetType="Border">
<Setter Property="BorderBrush" Value="White" />
</Style>
</Border.Style>
<StackPanel Orientation="Horizontal" >
<TextBlock Margin="10" Name="t1" Text="{Binding Name}"/>
<TextBlock Margin="10" Text="{Binding Age}"/>
</StackPanel>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="Bd" Property="BorderBrush" Value="HotPink" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ListBox.ItemContainerStyle>
</ListBox>
</Grid>
And this is how MouseOver looks like:
Now I want the Mouse over To enlarge the text, how can I do that ?
Just do this?
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="Bd" Property="BorderBrush" Value="HotPink" />
<Setter TargetName="t1" Property="FontSize" Value="72" />
</Trigger>
</ControlTemplate.Triggers>
This will enlarge the first textblock - you need to name the second one and make another setter with the new name in the TargetName property to enlarge both.
Here's an example of what I'm trying to accomplish:
<Window x:Class="CheckBoxBinding.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<StackPanel>
<CheckBox Name="myCheckBox">this</CheckBox>
<Grid>
<Grid.Resources>
<Style TargetType="ListBox">
<Style.Triggers>
<Trigger Property="{Binding ElementName=myCheckBox, Path=IsChecked}" Value="True">
<Setter Property="Background" Value="Red" />
</Trigger>
</Style.Triggers>
</Style>
</Grid.Resources>
<ListBox>
<ListBoxItem>item</ListBoxItem>
<ListBoxItem>another</ListBoxItem>
</ListBox>
</Grid>
</StackPanel>
</Window>
When I try to run it, I get this XamlParseException:
A 'Binding' cannot be set on the 'Property' property of type 'Trigger'. A 'Binding' can only be set on a DependencyProperty of a DependencyObject.
So how can I bind a property on the ListBox to the IsChecked property of a CheckBox?
Try using a DataTrigger. Replace your Grid.Resources with the following and it works:
<Grid.Resources>
<Style TargetType="ListBox">
<Style.Triggers>
<DataTrigger Binding="{Binding ElementName=myCheckBox, Path=IsChecked}" Value="True">
<Setter Property="Background" Value="Red" />
</DataTrigger>
</Style.Triggers>
</Style>
</Grid.Resources>