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所以我试图制作一个按钮，当鼠标悬停/移出/向下/向上时会改变图像......

并想出了以下内容：

<Image>
    <Image.Style>
        <Style TargetType="{x:Type Image}">
            <Style.Triggers>
                <Trigger Property="IsEnabled" Value="True">
                    <Setter Property="Source" Value="/MyWPF;component/Resources/MediaPlayer/Play-Normal-icon.png"/>
                </Trigger>
                <Trigger Property="IsMouseOver" Value="True">
                    <Setter Property="Source" Value="/MyWPF;component/Resources/MediaPlayer/Play-Pressed-icon.png"/>
                </Trigger>
                <Trigger Property="IsMouseOver" Value="False">
                    <Setter Property="Source" Value="/MyWPF;component/Resources/MediaPlayer/Play-Normal-icon.png"/>
                </Trigger>
                <Trigger Property="IsEnabled" Value="False">
                    <Setter Property="Source" Value="/MyWPF;component/Resources/MediaPlayer/Play-Disabled-icon.png"/>
                </Trigger>
                <EventTrigger RoutedEvent="MouseDown">
                    <EventTrigger.Actions>
                        <BeginStoryboard>
                            <Storyboard>
                                <ObjectAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetProperty="Source" Duration="00:00:00.5">
                                    <DiscreteObjectKeyFrame KeyTime="00:00:00">
                                        <DiscreteObjectKeyFrame.Value>
                                            <BitmapImage UriSource="/MyWPF;component/Resources/MediaPlayer/Play-Hot-icon.png"/>
                                        </DiscreteObjectKeyFrame.Value>
                                    </DiscreteObjectKeyFrame>
                                </ObjectAnimationUsingKeyFrames>
                            </Storyboard>
                        </BeginStoryboard>
                    </EventTrigger.Actions>
                </EventTrigger>
                <EventTrigger RoutedEvent="MouseUp">
                    <EventTrigger.Actions>
                        <BeginStoryboard>
                            <Storyboard>
                                <ObjectAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetProperty="Source" Duration="00:00:00.5">
                                    <DiscreteObjectKeyFrame KeyTime="00:00:00">
                                        <DiscreteObjectKeyFrame.Value>
                                            <BitmapImage UriSource="/MyWPF;component/Resources/MediaPlayer/Play-Normal-icon.png"/>
                                        </DiscreteObjectKeyFrame.Value>
                                    </DiscreteObjectKeyFrame>
                                </ObjectAnimationUsingKeyFrames>
                            </Storyboard>
                        </BeginStoryboard>
                    </EventTrigger.Actions>
                </EventTrigger>
            </Style.Triggers>
        </Style>
    </Image.Style>
</Image>

鼠标悬停/移出工作正常。

但是一旦我单击鼠标（向下），EventTriggers 就会触发，我可以看到图像发生了变化。

释放鼠标单击（向上），EventTriggers 再次触发，我可以看到图像变回了假设的方式。

现在我将鼠标悬停/移出图像。它不再改变图像了......

但是当我向下/向上鼠标时仍在工作......

所以我在猜测 EventTrigger 是否覆盖了 IsMouseOver 触发器？

EventTrigger 是否会覆盖其他触发器？

PS：对于那些阅读了我之前的问题的人，对不起，我不知道问题是由于 Button 从数据绑定中被禁用而引起的。

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1 回答 1

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This is because of dependency property value precedence, either change the other triggers to cause single frame animations or make the animations not hold their value.

于 2012-03-14T20:16:23.757 回答