WPF 全屏顯示實現（無標題欄按鈕 + 自定義退出按鈕）

完整實現代碼

MainWindow.xaml

<Window x:Class="FullScreenApp.MainWindow"xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"Title="全屏應用" WindowState="Maximized" WindowStyle="None"ResizeMode="NoResize" Background="Black"><Grid><!-- 主內容區域 --><TextBlock Text="全屏應用演示" HorizontalAlignment="Center" VerticalAlignment="Center"Foreground="White" FontSize="36"/><!-- 自定義退出按鈕 --><Button x:Name="ExitButton" Content="退出程序" Width="100" Height="40"HorizontalAlignment="Right" VerticalAlignment="Bottom"Margin="20"Click="ExitButton_Click"/></Grid>
</Window>

MainWindow.xaml.cs

using System.Windows;namespace FullScreenApp
{public partial class MainWindow : Window{public MainWindow(){InitializeComponent();// 確保窗口全屏this.WindowState = WindowState.Maximized;this.WindowStyle = WindowStyle.None;// 可選：防止其他窗口覆蓋this.Topmost = true;}private void ExitButton_Click(object sender, RoutedEventArgs e){// 退出應用程序Application.Current.Shutdown();}// 可選：響應ESC鍵退出protected override void OnKeyDown(KeyEventArgs e){if (e.Key == Key.Escape){Application.Current.Shutdown();}base.OnKeyDown(e);}}
}

進階功能

1. 添加淡入淡出動畫效果

<Window.Resources><Storyboard x:Key="FadeOut"><DoubleAnimation Storyboard.TargetProperty="Opacity"From="1" To="0" Duration="0:0:0.3"/></Storyboard>
</Window.Resources>

然后在退出按鈕點擊事件中：

private async void ExitButton_Click(object sender, RoutedEventArgs e)
{var storyboard = (Storyboard)FindResource("FadeOut");storyboard.Begin(this);await Task.Delay(300); // 等待動畫完成Application.Current.Shutdown();
}

2. 防止誤操作退出（添加確認對話框）

private void ExitButton_Click(object sender, RoutedEventArgs e)
{var result = MessageBox.Show("確定要退出程序嗎？", "確認退出", MessageBoxButton.YesNo, MessageBoxImage.Question);if (result == MessageBoxResult.Yes){Application.Current.Shutdown();}
}

3. 多顯示器支持（在主顯示器全屏）

public MainWindow()
{InitializeComponent();// 獲取主顯示器信息var screen = System.Windows.Forms.Screen.PrimaryScreen;// 設置窗口位置和大小this.Left = screen.Bounds.Left;this.Top = screen.Bounds.Top;this.Width = screen.Bounds.Width;this.Height = screen.Bounds.Height;this.WindowStyle = WindowStyle.None;this.WindowState = WindowState.Normal; // 必須設置為Normal才能自定義大小
}

注意事項

1. 窗口樣式：WindowStyle="None" 會移除所有窗口裝飾，包括標題欄和邊框
2. 調整大小：ResizeMode="NoResize" 防止用戶調整窗口大小
3. 任務欄：全屏窗口默認會覆蓋任務欄，如需顯示任務欄，請調整窗口大小
4. 快捷鍵：添加ESC鍵退出功能可以提升用戶體驗
5. 性能：全屏應用通常需要優化渲染性能，特別是包含動畫或視頻時