如何解决工具提示在WPF中立即出现不触发初始延迟
我在Main.Xaml中有两个按钮。我为每个工具声明了工具提示。它们之间的缝隙很小，睁开眼睛几乎看不到，但仍然有缝隙，您可以通过边距看到。
<Button
Style="{StaticResource RoundCorner}"
x:Name="button1" Width="71" HorizontalAlignment="Left" Margin="165,14,0" Height="24"
VerticalAlignment="Top" UseLayoutRounding="True" RenderOptions.ClearTypeHint="Enabled" RenderOptions.BitmapScalingMode="NearestNeighbor" SnapsToDevicePixels="True"
>
<Button.Content >
<TextBlock FontSize="10" FontFamily="Segoe UI" UseLayoutRounding="True" TextOptions.TextFormattingMode="Display" Margin="0,-2,0" >
Settings
</TextBlock>
</Button.Content>
<Button.ToolTip >
<ToolTip Style="{StaticResource ToolTipDefaults}" UseLayoutRounding="True" RenderOptions.ClearTypeHint="Enabled" RenderOptions.BitmapScalingMode="NearestNeighbor" SnapsToDevicePixels="True" TextOptions.TextFormattingMode="Display"
>
<StackPanel>
<TextBlock FontFamily="Segoe UI" FontSize="12" TextOptions.TextFormattingMode="Display" >
Settings
</TextBlock>
</StackPanel>
</ToolTip>
</Button.ToolTip>
</Button>
`enter code here`<Button
Style="{StaticResource RoundCorner}"
x:Name="button2" Width="71" HorizontalAlignment="Left" Margin="237,0" Height="24"
VerticalAlignment="Top" UseLayoutRounding="True" RenderOptions.ClearTypeHint="Enabled" RenderOptions.BitmapScalingMode="NearestNeighbor" SnapsToDevicePixels="True"
>
<Button.Content >
<TextBlock FontSize="10" FontFamily="Segoe UI" UseLayoutRounding="True" TextOptions.TextFormattingMode="Display" Margin="0,0" >
Settings
</TextBlock>
</Button.Content>
<Button.ToolTip >
<ToolTip Style="{StaticResource ToolTipDefaults}" UseLayoutRounding="True" RenderOptions.ClearTypeHint="Enabled" RenderOptions.BitmapScalingMode="NearestNeighbor" SnapsToDevicePixels="True" TextOptions.TextFormattingMode="Display"
>
<StackPanel>
<TextBlock FontFamily="Segoe UI" FontSize="12" TextOptions.TextFormattingMode="Display" >
Settings
</TextBlock>
</StackPanel>
</ToolTip>
</Button.ToolTip>
</Button>
我创建了两个控件模板，一个是用于按钮的控件模板，它被视为“ RoundCorner”，并在Main.XAMl中声明为按钮的StaticResource。另一个是ToolTip。
这是RoundCorner Controltemplate（按钮）的代码-
<Style x:Key="RoundCorner" TargetType="{x:Type Button}" x:Name="RoundCornerButton" >
<Setter Property="HorizontalContentAlignment" Value="Center"/>
<Setter Property="VerticalContentAlignment" Value="Center"/>
<Setter Property="Padding" Value="1"/>
<Setter Property="Foreground" Value="#bababa" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Grid x:Name="grid" >
<Border x:Name="border" CornerRadius="1" BorderThickness="0" >
<Border.Background>
<RadialGradientBrush GradientOrigin="0.496,1.052">
<RadialGradientBrush.RelativeTransform>
<TransformGroup>
<ScaleTransform CenterX="0.5" CenterY="0.5"
ScaleX="1.5" ScaleY="1.5"/>
<TranslateTransform X="0.02" Y="0.3"/>
</TransformGroup>
</RadialGradientBrush.RelativeTransform>
<GradientStop Offset="1" Color="#282828"/>
<GradientStop Offset="0.3" Color="#282828"/>
</RadialGradientBrush>
</Border.Background>
<ContentPresenter
HorizontalAlignment="Center"
VerticalAlignment="Center"
>
</ContentPresenter>
</Border>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" TargetName="border" Value="#202020"/>
<Setter Property="Foreground" Value="WhiteSmoke" />
</Trigger>
<Trigger Property="IsPressed" Value="True">
<Setter Property="Background" TargetName="border">
<Setter.Value>
<RadialGradientBrush GradientOrigin="0.496,1.052">
<RadialGradientBrush.RelativeTransform>
<TransformGroup>
<ScaleTransform CenterX="0.5" CenterY="0.5" ScaleX="1.5" ScaleY="1.5"/>
<TranslateTransform X="0.02" Y="0.3"/>
</TransformGroup>
</RadialGradientBrush.RelativeTransform>
<GradientStop Color="#161616" Offset="1"/>
<GradientStop Color="#161616" Offset="0.3"/>
</RadialGradientBrush>
</Setter.Value>
</Setter>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
这是工具提示的控件模板代码-
<Style x:Key="ToolTipDefaults" x:Name="NewTooltip"
TargetType="{x:Type ToolTip}">
<Setter Property="OverridesDefaultStyle"
Value="True" />
<Setter Property="HasDropShadow"
Value="True" />
<Setter Property="ToolTipService.Placement"
Value="MousePoint" />
<Setter Property="ToolTipService.VerticalOffset"
Value="5" />
<Setter Property="ToolTipService.HorizontalOffset"
Value="-10" />
<Setter Property="Foreground"
Value="#606060"/>
<Setter Property="ToolTipService.InitialShowDelay"
Value="1000" />
<Setter Property="ToolTipService.BetweenShowDelay"
Value="0" />
<Setter Property="ToolTipService.ShowDuration"
Value="6000" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToolTip}">
<Grid x:Name="grid" Margin="10" >
<Border x:Name="Bordermini" HorizontalAlignment="Right"
BorderThickness="0.5"
Width="{TemplateBinding Width}"
Height="15">
<Border.Background>
<LinearGradientBrush StartPoint="0,0"
EndPoint="0,1">
<LinearGradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="White"
Offset="0.0" />
<GradientStop Color="White"
Offset="1.0" />
</GradientStopCollection>
</LinearGradientBrush.GradientStops>
</LinearGradientBrush>
</Border.Background>
<Border.BorderBrush>
<SolidColorBrush Color="Gainsboro" />
</Border.BorderBrush>
<Border.Effect>
<DropShadowEffect Opacity="0.8" BlurRadius="5" Direction="-82" ShadowDepth="3.8" Color="#282828" >
</DropShadowEffect>
</Border.Effect>
<ContentPresenter Margin="1.5,0"
HorizontalAlignment="Left"
VerticalAlignment="Top" />
</Border>
<Border x:Name="Border" HorizontalAlignment="Right"
BorderThickness="0.5"
Width="{TemplateBinding Width}"
Height="19">
<Border.Background>
<LinearGradientBrush StartPoint="0,1">
<LinearGradientBrush.GradientStops>
<GradientStopCollection>
<GradientStop Color="#ffffff"
Offset="0.0" />
<GradientStop Color="#ffffff"
Offset="1.0" />
</GradientStopCollection>
</LinearGradientBrush.GradientStops>
</LinearGradientBrush>
</Border.Background>
<Border.BorderBrush>
<SolidColorBrush Color="Gray" />
</Border.BorderBrush>
<ContentPresenter Margin="4,0"
HorizontalAlignment="Left"
VerticalAlignment="Top" />
</Border>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="HasDropShadow" Value="True" >
<Setter TargetName="Border"
Property="CornerRadius"
Value="0" />
<Setter TargetName="Border"
Property="SnapsToDevicePixels"
Value="true" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
那么，当我将鼠标光标从一个按钮快速移动到另一个按钮时，如何重新触发初始延迟？是否需要使用“ Datatrigger”或“ DataBinding”来克服此问题？
解决方法
1：打开软件包的Nuget，搜索并添加YshXaf.DevExpress.Mvvm_yesfree和YshXaf.DevExpress.Xpf.Core_yesfree。
2：添加下面的类，并为其使用DevExpress.Mvvm.UI.Interactivity。
public class ToolTipBehavior : Behavior<FrameworkElement>
{
private object _popupControlService;
private PropertyInfo _toolTipTimerProperty;
protected override void OnAttached()
{
base.OnAttached();
var popControlServiceProperty = typeof(FrameworkElement).GetProperty("PopupControlService",BindingFlags.Static | BindingFlags.NonPublic);
_popupControlService = popControlServiceProperty.GetValue(this.AssociatedObject);
_toolTipTimerProperty = _popupControlService.GetType().GetProperty("ToolTipTimer",BindingFlags.Instance | BindingFlags.NonPublic);
this.AssociatedObject.ToolTipClosing += AssociatedObject_ToolTipClosing;
}
void AssociatedObject_ToolTipClosing(object sender,ToolTipEventArgs e)
{
_toolTipTimerProperty.SetValue(_popupControlService,new DispatcherTimer());
}
protected override void OnDetaching()
{
base.OnDetaching();
}
}
3：在Xaml中添加 xmlns：dxmvvm =“ http://schemas.devexpress.com/winfx/2008/xaml/mvvm” 。然后在 RoundCorner中使用ToolTipBeahvior 。
<Setter Property="dxmvvm:Interaction.BehaviorsTemplate">
<Setter.Value>
<DataTemplate>
<ContentControl>
<local:ToolTipBehavior/>
</ContentControl>
</DataTemplate>
</Setter.Value>
</Setter>
这是结果图片：
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