自定义窗体标题栏及尺寸调整手柄完成

MVVMExample/Helper.cs

@@ -0,0 +1,54 @@
+using Avalonia.Controls;
+using Avalonia.Input;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MVVMExample
+{
+    public static partial class Helper
+    {
+        /// <summary>
+        /// 绑定自定义窗口标题栏与尺寸调整句柄
+        /// </summary>
+        /// <param name="window">要进行绑定的窗口</param>
+        /// <param name="handle">窗口位置拖动句柄</param>
+        /// <param name="slider">窗口尺寸调整句柄</param>
+        /// <param name="maxBut">最大化按钮</param>
+        /// <param name="minBut">最小化按钮</param>
+        /// <param name="closeBut">关闭按钮</param>
+        public static void BindWindowEdge(this Window window, InputElement? handle = null, InputElement? slider = null, Button? maxBut = null, Button? minBut = null, Button? closeBut = null)
+        {
+            // 隐藏窗口默认标题栏与尺寸调整句柄
+            window.SystemDecorations = SystemDecorations.None;
+
+            if (handle != null)
+                handle.PointerPressed += (s, e) =>
+                {
+                    if (e.GetCurrentPoint(window).Properties.IsLeftButtonPressed) window.BeginMoveDrag(e); // 关键：开始窗口拖拽
+                };
+            if (slider != null)
+                slider.PointerPressed += (s, e) =>
+                {
+                    if (e.GetCurrentPoint(window).Properties.IsLeftButtonPressed) window.BeginResizeDrag(WindowEdge.SouthEast, e);
+                };
+            if (maxBut != null)
+                maxBut.Click += (s, e) =>
+                {
+                    window.WindowState = window.WindowState == WindowState.Maximized ? WindowState.Normal : WindowState.Maximized;
+                };
+            if (minBut != null)
+                minBut.Click += (s, e) =>
+                {
+                    window.WindowState = WindowState.Minimized;
+                };
+            if (closeBut != null)
+                closeBut.Click += (s, e) =>
+                {
+                    window.Close();
+                };
+        }
+    }
+}

MVVMExample/Themes/DefaultStyles.axaml

@@ -0,0 +1,16 @@
+<Styles xmlns="https://github.com/avaloniaui"
+		xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+	<Design.PreviewWith>
+		<Border Padding="20">
+			<!-- Add Controls for Previewer Here -->
+		</Border>
+	</Design.PreviewWith>
+
+	<!-- Add Styles Here -->
+	<Style Selector="Button.maxButton">
+
+	</Style>
+	<Style Selector="Button.maxButton:pointerover">
+
+	</Style>
+</Styles>

MVVMExample/Views/MainWindow.axaml

@@ -1,4 +1,4 @@
-<Window xmlns="https://github.com/avaloniaui"
+<Window xmlns="https://github.com/avaloniaui"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:vm="using:MVVMExample.ViewModels"
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
@@ -6,15 +6,39 @@
         mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
         x:Class="MVVMExample.Views.MainWindow"
         x:DataType="vm:MainWindowViewModel"
+        SystemDecorations="None" 
         Icon="/Assets/avalonia-logo.ico"
-        Title="MVVMExample">
+        Title="MVVMExample"
-
+        CanResize="True">
+    <Window.Styles>
+		<Style Selector="Window">
+			<Setter Property="Background" Value="#0F000000"/>
+        </Style>
+    </Window.Styles>
     <Design.DataContext>
-        <!-- This only sets the DataContext for the previewer in an IDE,
-             to set the actual DataContext for runtime, set the DataContext property in code (look at App.axaml.cs) -->
         <vm:MainWindowViewModel/>
     </Design.DataContext>
-
+    <Grid>
-    <TextBlock Text="{Binding Greeting}" HorizontalAlignment="Center" VerticalAlignment="Center"/>
+        <Grid.RowDefinitions>
-
+            <RowDefinition Height="Auto"/> <!-- 标题栏行 -->
+            <RowDefinition Height="*"/> <!-- 内容行 -->
+            <RowDefinition Height="40"/>
+        </Grid.RowDefinitions>
+        <!-- 自定义标题栏 -->
+        <Border Grid.Row="0" Height="40" Background="#007ACC" PointerPressed="TitleBar_PointerPressed"> <!-- 绑定拖拽事件 -->
+            <Grid Margin="10,0">
+                <TextBlock VerticalAlignment="Center" Foreground="White" Text="{Binding Path=Title, RelativeSource={RelativeSource AncestorType=Window}}"/>
+                <StackPanel HorizontalAlignment="Right" Orientation="Horizontal" Spacing="8">
+                    <Button x:Name="MinimizeBtn" Content="─" Width="40" Click="MinimizeBtn_Click"/>
+                    <Button x:Name="MaximizeBtn" Content="□" Width="40" Click="MaximizeBtn_Click"/>
+                    <Button x:Name="CloseBtn" Content="✕" Width="40" Background="Red" Click="CloseBtn_Click"/>
+                </StackPanel>
+            </Grid>
+        </Border>
+        <!-- 主内容区 -->
+        <Border Grid.Row="1" Background="White">
+            <TextBlock Text="你的应用内容在这里" HorizontalAlignment="Center" VerticalAlignment="Center"/>
+        </Border>
+        <Border Grid.Row="2" Width="40" Height="40" Background="Red" HorizontalAlignment="Right" PointerPressed="Bar_PointerPressed"/>
+    </Grid>
 </Window>

MVVMExample/Views/MainWindow.axaml.cs

@@ -1,4 +1,6 @@
-using Avalonia.Controls;
+using Avalonia.Controls;
+using Avalonia.Input;
+using Avalonia.Interactivity;
 
 namespace MVVMExample.Views
 {
@@ -7,6 +9,43 @@ namespace MVVMExample.Views
         public MainWindow()
         {
             InitializeComponent();
+            //
+        }
+        // 处理标题栏拖拽以实现窗口移动
+        private void TitleBar_PointerPressed(object? sender, PointerPressedEventArgs e)
+        {
+            if (e.GetCurrentPoint(this).Properties.IsLeftButtonPressed)
+            {
+                BeginMoveDrag(e); // 关键：开始窗口拖拽
+            }
+        }
+        private void Bar_PointerPressed(object? sender, PointerPressedEventArgs e)
+        {
+            if (e.GetCurrentPoint(this).Properties.IsLeftButtonPressed)
+            {
+                BeginResizeDrag(WindowEdge.SouthEast, e); // 关键：开始窗口拖拽
+            }
+        }
+        // 最小化按钮
+        private void MinimizeBtn_Click(object? sender, RoutedEventArgs e)
+        {
+            WindowState = WindowState.Minimized;
+        }
+
+        // 最大化/还原按钮
+        private void MaximizeBtn_Click(object? sender, RoutedEventArgs e)
+        {
+            WindowState = WindowState == WindowState.Maximized
+                ? WindowState.Normal
+                : WindowState.Maximized;
+            // 可选：切换最大化/还原按钮的图标
+            MaximizeBtn.Content = WindowState == WindowState.Maximized ? "❐" : "□";
+        }
+
+        // 关闭按钮
+        private void CloseBtn_Click(object? sender, RoutedEventArgs e)
+        {
+            Close();
         }
     }
 }