如何避免按钮WPF闪烁

本文关键字：闪烁 WPF 按钮 何避免 | 更新日期: 2023-09-27 18:27:39

我正在使用WPF（c#）编写一个程序。我用了几个按钮。一个按钮点击后开始闪烁！它的颜色从背景色逐渐变为浅蓝色。当我点击另一个按钮时，它不会停止闪烁（然后这个按钮开始闪烁！！）。是虫子吗？它和我的视觉工作室有关吗？

如何解决此问题？

如何避免按钮WPF闪烁

首先，您可以尝试将按钮Focusable设置为False。但是，如果使用键盘导航，这将是一个问题。然而，我确实发现了这个Window.Resource XAML代码：

<Window.Resources>
<Style x:Key="ButtonFocusVisual">
    <Setter Property="Control.Template">
        <Setter.Value>
            <ControlTemplate>
                <Rectangle Margin="2" SnapsToDevicePixels="true" Stroke="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}" StrokeThickness="1" StrokeDashArray="1 2"/>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>
<LinearGradientBrush x:Key="ButtonNormalBackground" EndPoint="0,1" StartPoint="0,0">
    <GradientStop Color="#F3F3F3" Offset="0"/>
    <GradientStop Color="#EBEBEB" Offset="0.5"/>
    <GradientStop Color="#DDDDDD" Offset="0.5"/>
    <GradientStop Color="#CDCDCD" Offset="1"/>
</LinearGradientBrush>
<SolidColorBrush x:Key="ButtonNormalBorder" Color="#FF707070"/>
<Style x:Key="BoringButtonStyle" TargetType="{x:Type Button}">
    <Setter Property="FocusVisualStyle" Value="{StaticResource ButtonFocusVisual}"/>
    <Setter Property="Background" Value="{StaticResource ButtonNormalBackground}"/>
    <Setter Property="BorderBrush" Value="{StaticResource ButtonNormalBorder}"/>
    <Setter Property="BorderThickness" Value="1"/>
    <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
    <Setter Property="HorizontalContentAlignment" Value="Center"/>
    <Setter Property="VerticalContentAlignment" Value="Center"/>
    <Setter Property="Padding" Value="1"/>
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type Button}">
                <Microsoft_Windows_Themes:ButtonChrome x:Name="Chrome" BorderBrush="{TemplateBinding BorderBrush}" Background="{TemplateBinding Background}" RenderMouseOver="{TemplateBinding IsMouseOver}" RenderPressed="{TemplateBinding IsPressed}" RenderDefaulted="{TemplateBinding IsDefaulted}" SnapsToDevicePixels="true">
                    <ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
                </Microsoft_Windows_Themes:ButtonChrome>
                <ControlTemplate.Triggers>
                    <Trigger Property="ToggleButton.IsChecked" Value="true">
                        <Setter Property="RenderPressed" TargetName="Chrome" Value="true"/>
                    </Trigger>
                    <Trigger Property="IsEnabled" Value="false">
                        <Setter Property="Foreground" Value="#ADADAD"/>
                    </Trigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

然后，每当您想要应用自定义按钮样式时，将按钮Style设置为：

<Button Style="{DynamicResource BoringButtonStyle}"/>

您可以覆盖Button模板以删除默认的Themed(Aero)样式

像这样的事情将是一个很好的开始。

<Style TargetType="{x:Type Button}">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type Button}">
                <Border x:Name="Border" CornerRadius="2" BorderThickness="1" Background="{x:Static SystemColors.ControlBrush}" BorderBrush="{x:Static SystemColors.ControlDarkDarkBrush}">
                    <ContentPresenter  Margin="2" HorizontalAlignment="Center" VerticalAlignment="Center" RecognizesAccessKey="True"/>
                </Border>
                <ControlTemplate.Triggers>
                    <Trigger Property="IsKeyboardFocused" Value="True">
                        <Setter TargetName="Border" Property="BorderBrush" Value="{x:Static SystemColors.ControlBrush}" />
                        <Setter TargetName="Border" Property="BorderBrush" Value="{x:Static SystemColors.ControlDarkDarkBrush}" />
                    </Trigger>
                    <Trigger Property="IsDefaulted" Value="True">
                        <Setter TargetName="Border" Property="BorderBrush" Value="{x:Static SystemColors.ControlBrush}" />
                        <Setter TargetName="Border" Property="BorderBrush" Value="{x:Static SystemColors.ControlDarkDarkBrush}" />
                    </Trigger>
                    <Trigger Property="IsMouseOver" Value="True">
                        <Setter TargetName="Border" Property="Background" Value="{x:Static SystemColors.ActiveCaptionBrush}" />
                        <Setter TargetName="Border" Property="BorderBrush" Value="{x:Static SystemColors.ControlDarkDarkBrush}" />
                    </Trigger>
                    <Trigger Property="IsPressed" Value="True">
                        <Setter TargetName="Border" Property="Background" Value="{x:Static SystemColors.ActiveCaptionBrush}" />
                        <Setter TargetName="Border" Property="BorderBrush" Value="{x:Static SystemColors.ControlDarkDarkBrush}" />
                    </Trigger>
                    <Trigger Property="IsEnabled" Value="False">
                        <Setter TargetName="Border" Property="Background" Value="#EEEEEE" />
                        <Setter TargetName="Border" Property="BorderBrush" Value="#AAAAAA" />
                    </Trigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>
相关文章：