[英]WPF custom control does not use default style of ToggleButton
我正在创建一个基于 ToggleButton 的自定义控件。 使用 Generic.xaml 中的这种简单样式,我无法在我的自定义控件上使用默认的切换按钮样式。
我将前景、背景和边框设置为系统颜色,但没有任何反应。
<Style TargetType="{x:Type local:PopupButton}" BasedOn="{StaticResource {x:Type ToggleButton}}">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
<Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}" />
<Setter Property="BorderBrush" Value="{DynamicResource {x:Static SystemColors.ActiveBorderBrushKey}}" />
<Setter Property="HorizontalAlignment" Value="Center" />
<Setter Property="VerticalAlignment" Value="Center" />
<Setter Property="MinHeight" Value="22" />
<Setter Property="MinWidth" Value="75" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type local:PopupButton}">
<Grid SnapsToDevicePixels="True">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<ToggleButton Grid.Column="0">
<ToggleButton.Template>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<ContentPresenter SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
HorizontalAlignment="Stretch" VerticalAlignment="Stretch"
RecognizesAccessKey="True" />
</ControlTemplate>
</ToggleButton.Template>
<ContentPresenter Content="{TemplateBinding Content}"
ContentTemplate="{TemplateBinding ContentTemplate}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
Margin="{TemplateBinding Margin}"
RecognizesAccessKey="true" />
</ToggleButton>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
我已经覆盖了 defaultstylekey:
public class PopupButton : ToggleButton
{
static PopupButton()
{
DefaultStyleKeyProperty.OverrideMetadata(typeof(PopupButton), new FrameworkPropertyMetadata(typeof(PopupButton)));
}
// ...
一直在测试,玩弄其他(xaml)代码,但几个小时后我仍然没有弄清楚为什么不应用默认样式。
在您的 ControlTemplate for local:PopupButton 中,您有一个切换按钮,但您也覆盖了它的模板。 尝试删除:
<ToggleButton.Template>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<ContentPresenter SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
HorizontalAlignment="Stretch" VerticalAlignment="Stretch"
RecognizesAccessKey="True" />
</ControlTemplate>
</ToggleButton.Template>
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