C# WPF ComboBox 鼠标悬停在颜色上 [英] C# WPF ComboBox Mouse over color
问题描述
当鼠标悬停在我的 ComboBox 上时,我的 ComboBox 背景出现了一对糟糕的蓝色/浅蓝色.我在这里尝试了解决方案:ComboBox Mouse over color, WPF 组合框鼠标悬停,如何在鼠标悬停时设置 ComboBox 背景的样式? 或 切换按钮上的 WPF 组合框默认悬停颜色,但它没有改变任何东西,悬停时我仍然获得默认颜色.
When the mouse hover over my ComboBox, I get an awful blue/lightblue pair of color for the backgroung of my ComboBox. I tried the solutions here :ComboBox Mouse over color, WPF Combobox Mouse Over, How to style ComboBox Background on Mouse Hover? or WPF combobox default hover color on togglebutton, but it doesn't change anything, I still get the default colors while hovering.
有什么建议吗?
先谢谢大家,德马西亚多.
Thank you all in advance, Demasiado.
这是 XAML 代码:
Here is the XAML code :
<Window x:Class="Homepage.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:sys="clr-namespace:System;assembly=mscorlib"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
<Window.Resources>
<Storyboard x:Key="TileZoomIn">
<ThicknessAnimation Storyboard.TargetProperty="Margin" From="10" To="1" Duration="0:0:0.1"/>
</Storyboard>
<Storyboard x:Key="TileZoomOut">
<ThicknessAnimation Storyboard.TargetProperty="Margin" From="1" To="10" Duration="0:0:0.1"/>
</Storyboard>
<DropShadowEffect x:Key="DropShadowEffect" BlurRadius="20" Opacity="1" ShadowDepth="0" Color="White"/>
</Window.Resources>
<Grid ShowGridLines="True">
<ComboBox Name="comboBoxTRIG" FontSize="40" Width="210" Height="98" HorizontalAlignment="Left" HorizontalContentAlignment="Center" Margin="40,-180,0,256" Background="Transparent" BorderBrush="Transparent" Foreground="White" BorderThickness="0">
<ComboBox Margin="25" Width="130" Height="50">
<ComboBox.Resources>
<SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" Color="Green"/>
</ComboBox.Resources>
</ComboBox>
</ComboBox>
</Grid>
</Window>
推荐答案
您的问题来自 ToggleButton 模板中的 ButtonChrome.从 ToggleButton 中删除它.
Your problem arises from ButtonChrome in the ToggleButton's template. Remove it from the ToggleButton.
ComboBox -> ToggleButton -> ButtonChrome
步骤:
1) 打开 Expression Blend 并编辑 ComboBox 样式的副本,这将为您提供 ComboBox 的样式 + 它的模板以及所有它的 TemplateParts ,其中包括有问题的 ToggleButton.
1) Open Expression Blend and edit a copy of ComboBox's Style , This will give you the Style of the ComboBox + it's Template and all it's TemplateParts , Among them is the problematic ToggleButton.
2) 找到 ToggleButton,它的 Style 称为ComboBoxReadonlyToggleButton".
2) Locate the ToggleButton and it's Style called "ComboBoxReadonlyToggleButton" .
3) 在ComboBoxReadonlyToggleButton"中,将 Themes:ButtonChrome 替换为 Border(如下面的第 3 块代码所示.)
3) In "ComboBoxReadonlyToggleButton" replace the Themes:ButtonChrome with a Border (like shown in the 3'rd block of code below.)
组合框的默认模板(简化版!):
<ControlTemplate TargetType="{x:Type ComboBox}">
<Grid x:Name="MainGrid" SnapsToDevicePixels="true">
<Popup x:Name="PART_Popup">
.....
</Popup>
<ToggleButton Style="{StaticResource ComboBoxReadonlyToggleButton}"/>
<ContentPresenter ... />
</Grid>
</ControlTemplate>
切换按钮样式 + 模板(简化!).
<Style x:Key="ComboBoxReadonlyToggleButton" TargetType="{x:Type ToggleButton}">
<Setter Property="Background" Value="Transparent"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Themes:ButtonChrome x:Name="Chrome" ....>
<Grid>
<Path x:Name="Arrow" />
</Grid>
</Themes:ButtonChrome>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
您需要做的是覆盖默认的 ComboBox 模板并通过将 ButtonChrome 替换为 Border 来编辑切换按钮的样式:
What you need to do is to override the default ComboBox template and edit the toggle button's style by replacing ButtonChrome with a Border :
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Border x:Name="Chrome" BorderBrush="{TemplateBinding BorderBrush}" Background="{TemplateBinding Background}" SnapsToDevicePixels="true">
<Grid>
<Path x:Name="Arrow" />
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
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