[英]Override IsMouseOver and change background color based on logic in WPF Button
目標要使onMouseEnter按鈕背景的默認行為是什么都不做,但仍允許在應用程序邏輯中以編程方式更改按鈕背景。
多個帖子地址覆蓋了默認的MouseOver行為:
但是,在我的應用程序中,我需要繼續更改背景色,並將MouseOver背景色設置為Trigger會覆蓋我的更改。
<Button Content="Start" Name="buttonStart" Style="{StaticResource mainButton}" PreviewMouseDown="buttonStart_MouseDown"/>
<Button Content="Stop" Name="buttonStop" Style="{StaticResource mainButton}" PreviewMouseDown="buttonStop_MouseDown"/>
App.xaml
樣式
<Style x:Key="mainButton" TargetType="{x:Type Button}">
<Setter Property="Width" Value="250"/>
<Setter Property="Height" Value="75"/>
<Setter Property="FontSize" Value="40"/>
<Setter Property="FontFamily" Value="Segoe UI Light"/>
<Setter Property="Foreground" Value="White"/>
<Setter Property="Background" Value="Transparent"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border Name="Border" BorderThickness="1"
BorderBrush="#404040">
<ContentPresenter Margin="2"
HorizontalAlignment="Center"
VerticalAlignment="Center"
RecognizesAccessKey="True"/>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="true">
<Setter TargetName="Border"
Property="Background" Value="{x:Null}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
邏輯:
private void buttonStop_MouseDown(object sender, RoutedEventArgs e)
{
//Change background colors for buttonStop and buttonStart
}
private void buttonStart_MouseDown(object sender, RoutedEventArgs e)
{
//Change background colors for buttonStop and buttonStart
}
如何使按鈕上的背景在onMouseEnter上不執行任何操作,但仍在代碼中更改背景?
如果無法刪除觸發器,則可以對按鈕上的內容使用TextBlock,然后在后面的代碼中設置TextBlock OnClick的背景。 您將不得不調整樣式,以允許TextBlock填充Button,以使其正確顯示。
像這樣:
private void buttonStop_MouseDown(object sender, RoutedEventArgs e)
{
//Change background colors for buttonStop and buttonStart
TextBlock tb = new TextBlock();
tb.Background = Brushes.Blue;
((Button)sender).Content = tb;
}
......
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