82 lines
2.8 KiB
C#
82 lines
2.8 KiB
C#
using DeviceEditModule.ViewModels;
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using System.Runtime.InteropServices;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Input;
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using System.Windows.Interop;
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namespace DeviceEditModule.Views
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{
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/// <summary>
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/// DialogMangerView 代码后置。
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/// 负责处理与 Window 相关的操作（最小化），ViewModel 通过事件通知，
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/// 此处执行 P/Invoke，绕过 WPF 在 AllowsTransparency=True 时禁止
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/// 直接设置 WindowState.Minimized 的限制。
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/// </summary>
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public partial class DialogMangerView : UserControl
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{
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#region P/Invoke
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[DllImport("user32.dll")]
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private static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);
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/// <summary>SW_MINIMIZE：最小化到任务栏。</summary>
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private const int SW_MINIMIZE = 6;
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/// <summary>SW_RESTORE：激活并显示窗口。如果窗口最小化或最大化，系统会将其还原到原始大小和位置。</summary>
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private const int SW_RESTORE = 9;
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#endregion
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public DialogMangerView()
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{
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InitializeComponent();
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// 在 Loaded 后订阅 ViewModel 的最小化请求事件
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Loaded += (_, _) =>
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{
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if (DataContext is DialogMangerViewModel vm)
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{
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vm.MinimizeRequested += OnMinimizeRequested;
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vm.RestoreRequested += OnRestoreRequested;
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}
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};
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// 在 Unloaded 时取消订阅，防止内存泄漏
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Unloaded += (_, _) =>
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{
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if (DataContext is DialogMangerViewModel vm)
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{
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vm.MinimizeRequested -= OnMinimizeRequested;
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vm.RestoreRequested -= OnRestoreRequested;
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}
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};
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}
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private void OnRestoreRequested(object? sender, EventArgs e)
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{
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var window = Window.GetWindow(this);
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if (window == null) return;
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var hwnd = new WindowInteropHelper(window).EnsureHandle();
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// 使用 Win32 API 强行恢复窗口，绕过 WPF 的 AllowsTransparency 限制
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ShowWindow(hwnd, SW_RESTORE);
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}
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private void OnMinimizeRequested(object? sender, System.EventArgs e)
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{
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var window = Window.GetWindow(this);
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if (window == null) return;
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var hwnd = new WindowInteropHelper(window).EnsureHandle();
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ShowWindow(hwnd, SW_MINIMIZE);
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}
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/// <summary>标题栏拖拽移动窗口。</summary>
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private void MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
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{
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if (e.LeftButton == MouseButtonState.Pressed)
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Window.GetWindow(this)?.DragMove();
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}
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}
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}
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