畫兩個按鈕，希望執行時只顯示一個按鈕，另一個按鈕隱藏。 用到 Visibility="Collapsed"，隱藏按鈕，且不為它保留位置。

<Button x:Name="btnMaximize" Padding="3" Click="btnMaximize_Click" HorizontalAlignment="Right" Template="{StaticResource ButtonTemplate}" VerticalAlignment="Top" Width="45" Height="42">

<Image Source="Image/maximize.png" Width="18" Height="18"></Image>

</Button> <Button x:Name="btnNormal" Padding="3" Click="btnNormal_Click" HorizontalAlignment="Right" Template="{StaticResource ButtonTemplate}" VerticalAlignment="Top" Width="45" Height="42" Visibility="Collapsed">

<Image Source="Image/huanyuan.png" Width="24" Height="24"></Image>

</Button> <Button x:Name="btMinWindow" Padding="3" Click="btMinWindow_Click" HorizontalAlignment="Right" Template="{StaticResource ButtonTemplate}" VerticalAlignment="Top" Width="45" Height="42">

<Image Source="Image/min.png" Width="18" Height="18"></Image>

</Button>

private void btnMaximize_Click(object sender, RoutedEventArgs e)

{

this.btnMaximize.Visibility = Visibility.Collapsed;//使最大化圖示隱藏

this.btnNormal.Visibility = Visibility.Visible;//使還原圖示顯示

this.rcnormal = new Rect(this.Left, this.Top, this.Width, this.Height);//儲存下當前位置與大小

Rect rc = SystemParameters.WorkArea;//獲取工作區大小

// this.BorderThickness = new Thickness(0, 0, 0, 0);//隱藏陰影

// 經過試驗，發現window最多可以比螢幕大一圈，10畫素左右，再多就不能顯示了

this.Left = -10;//設定位置

this.Top = -10;

this.Width = rc.Width+22;

this.Height = rc.Height+20;

}

/// <summary> /// 還原 /// </summary> private void btnNormal_Click(object sender, RoutedEventArgs e)

{

// this.BorderThickness = new Thickness(24, 24, 24, 24);//顯示陰影

this.Left = rcnormal.Left;

this.Top = rcnormal.Top;

this.Width = rcnormal.Width;

this.Height = rcnormal.Height;

this.btnMaximize.Visibility = Visibility.Visible;

this.btnNormal.Visibility = Visibility.Collapsed;

}

private void btMinWindow_Click(object sender, RoutedEventArgs e)

{

this.WindowState = WindowState.Minimized;

}