小编sta*_*war的帖子

我想将选项卡背景设置为红色并取消选择为绿色.但是,更改时,只有未选中的选项卡显示为绿色.精选仍为白色.

        <TabControl Background="LightGray" Name="MainTabControl">
        <TabControl.Resources>
            <Style TargetType="TabItem">
                <Style.Triggers>
                    <Trigger Property="IsSelected" Value="True">
                        <Setter Property="Background" Value="Red" />
                    </Trigger>
                    <Trigger Property="IsSelected" Value="False">
                        <Setter Property="Background" Value="Green" />
                    </Trigger>
                </Style.Triggers>
            </Style>
        </TabControl.Resources>
        <TabItem Header="Main" />
        <TabItem Header="Optimizer" />
    </TabControl>

我有以下课程

class ThreadDemo extends Thread {
    private Thread t;
    private String threadName;

    ThreadDemo( String name) {
        threadName = name;
    }

    public void run() {
        for(int i = 5; i > 0; i--) {
            System.out.println("Thread " +  threadName + " Counter   ---   "  + i );
        }

        try {
            Thread.sleep(1000);
        } catch (Exception e) {
            System.out.println("Sleep issue");
        }

        System.out.println("Finishing run");

        try {
            Thread.sleep(1000);
        } catch (Exception e) {
            System.out.println("Sleep issue");
        }
    }

    public void start () {
        t = new Thread …