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Add ContextMenu Support
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4 files changed

+240
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4 files changed

+240
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‎components/TitleBar/src/InfoHelper.cs‎

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using Windows.ApplicationModel;
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using Windows.Storage;
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using Windows.System.Profile;
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namespace CommunityToolkit.WinUI.Controls;
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internal static class InfoHelper
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{
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public static Version AppVersion { get; } = new Version(
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Package.Current.Id.Version.Major,
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Package.Current.Id.Version.Minor,
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Package.Current.Id.Version.Build,
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Package.Current.Id.Version.Revision
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);
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public static Version SystemVersion { get; }
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public static SystemDataPaths SystemDataPath { get; } = SystemDataPaths.GetDefault();
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public static UserDataPaths UserDataPath { get; } = UserDataPaths.GetDefault();
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public static string AppInstalledLocation { get; } = Package.Current.InstalledLocation.Path;
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static InfoHelper()
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{
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string systemVersion = AnalyticsInfo.VersionInfo.DeviceFamilyVersion;
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ulong version = ulong.Parse(systemVersion);
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SystemVersion = new Version(
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(int)((version & 0xFFFF000000000000L) >> 48),
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(int)((version & 0x0000FFFF00000000L) >> 32),
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(int)((version & 0x00000000FFFF0000L) >> 16),
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(int)(version & 0x000000000000FFFFL)
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);
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}
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}

‎components/TitleBar/src/NativeMethods.cs‎

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using System.Runtime.InteropServices;
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namespace CommunityToolkit.WinUI.Controls;
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internal static class NativeMethods
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{
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public enum WindowMessage : int
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{
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WM_NCLBUTTONDOWN = 0x00A1,
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WM_NCRBUTTONDOWN = 0x00A4,
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WM_SYSCOMMAND = 0x0112,
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WM_SYSMENU = 0x0313,
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WM_GETMINMAXINFO = 0x0024
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}
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[Flags]
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public enum WindowStyle : uint
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{
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WS_SYSMENU = 0x80000
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}
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[Flags]
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public enum WindowLongIndexFlags : int
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{
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GWL_WNDPROC = -4,
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GWL_STYLE = -16
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}
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[Flags]
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public enum SetWindowPosFlags : uint
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{
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/// <summary>
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/// Retains the current position (ignores X and Y parameters).
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/// </summary>
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SWP_NOMOVE = 0x0002
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}
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public enum SystemCommand
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{
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SC_MOUSEMENU = 0xF090,
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SC_KEYMENU = 0xF100
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}
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[DllImport("user32.dll", EntryPoint = "GetWindowLongW", SetLastError = false)]
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public static extern int GetWindowLong(IntPtr hWnd, int nIndex);
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[DllImport("user32.dll", EntryPoint = "GetWindowLongPtrW", SetLastError = false)]
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public static extern int GetWindowLongPtr(IntPtr hWnd, int nIndex);
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public static int GetWindowLongAuto(IntPtr hWnd, int nIndex)
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{
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if (IntPtr.Size is 8)
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{
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return GetWindowLongPtr(hWnd, nIndex);
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}
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else
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{
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return GetWindowLong(hWnd, nIndex);
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}
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}
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[DllImport("user32.dll", EntryPoint = "FindWindowExW", SetLastError = true, CharSet = CharSet.Unicode)]
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public static extern IntPtr FindWindowEx(IntPtr hWndParent, IntPtr hWndChildAfter, string lpszClass, string lpszWindow);
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[DllImport("user32.dll", EntryPoint = "SetWindowLongW", SetLastError = false)]
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public static extern IntPtr SetWindowLong(IntPtr hWnd, int nIndex, IntPtr dwNewLong);
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[DllImport("user32.dll", EntryPoint = "SetWindowLongPtrW", SetLastError = false)]
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public static extern IntPtr SetWindowLongPtr(IntPtr hWnd, int nIndex, IntPtr dwNewLong);
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public static IntPtr SetWindowLongAuto(IntPtr hWnd, int nIndex, IntPtr dwNewLong)
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{
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if (IntPtr.Size is 8)
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{
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return SetWindowLongPtr(hWnd, nIndex, dwNewLong);
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}
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else
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{
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return SetWindowLong(hWnd, nIndex, dwNewLong);
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}
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}
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[DllImport("user32.dll")]
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public static extern IntPtr CallWindowProc(IntPtr lpPrevWndFunc, IntPtr hWnd, WindowMessage Msg, IntPtr wParam, IntPtr lParam);
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}

‎components/TitleBar/src/TitleBar.WASDK.cs‎

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Original file line numberDiff line numberDiff line change
@@ -15,6 +15,8 @@ namespace CommunityToolkit.WinUI.Controls;
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public partial class TitleBar : Control
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{
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WndProcHelper WndProcHelper;
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MenuFlyout MenuFlyout;
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ContentPresenter? PART_ContentPresenter;
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ContentPresenter? PART_FooterPresenter;
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@@ -29,6 +31,14 @@ private void SetWASDKTitleBar()
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{
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Window.AppWindow.TitleBar.ExtendsContentIntoTitleBar = true;
3133

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if (this.ContextFlyout != null && this.ContextFlyout is MenuFlyout menuFlyout)
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{
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this.MenuFlyout = menuFlyout;
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WndProcHelper = new WndProcHelper(this.Window);
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WndProcHelper.RegisterWndProc(WindowWndProc);
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WndProcHelper.RegisterInputNonClientPointerSourceWndProc(InputNonClientPointerSourceWndProc);
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}
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3242
this.Window.SizeChanged -= Window_SizeChanged;
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this.Window.SizeChanged += Window_SizeChanged;
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this.Window.Activated -= Window_Activated;
@@ -161,5 +171,68 @@ public void ClearDragRegions(NonClientRegionKind nonClientRegionKind)
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var noninputsrc = InputNonClientPointerSource.GetForWindowId(Window.AppWindow.Id);
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noninputsrc.ClearRegionRects(nonClientRegionKind);
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}
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private IntPtr InputNonClientPointerSourceWndProc(IntPtr hWnd, NativeMethods.WindowMessage Msg, IntPtr wParam, IntPtr lParam)
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{
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switch (Msg)
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{
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case NativeMethods.WindowMessage.WM_NCLBUTTONDOWN:
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{
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if (MenuFlyout.IsOpen)
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{
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MenuFlyout.Hide();
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}
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break;
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}
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case NativeMethods.WindowMessage.WM_NCRBUTTONDOWN:
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{
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PointInt32 pt = new PointInt32(lParam.ToInt32() & 0xFFFF, lParam.ToInt32() >> 16);
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FlyoutShowOptions options = new FlyoutShowOptions();
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options.ShowMode = FlyoutShowMode.Standard;
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options.Position = InfoHelper.SystemVersion.Build >= 22000 ?
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new Windows.Foundation.Point((pt.X - this.Window.AppWindow.Position.X - 8) / XamlRoot.RasterizationScale, (pt.Y - this.Window.AppWindow.Position.Y) / XamlRoot.RasterizationScale) :
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new Windows.Foundation.Point(pt.X - this.Window.AppWindow.Position.X - 8, pt.Y - this.Window.AppWindow.Position.Y);
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MenuFlyout.ShowAt(this, options);
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return (IntPtr)0;
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}
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}
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return WndProcHelper.CallInputNonClientPointerSourceWindowProc(hWnd, Msg, wParam, lParam);
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}
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private IntPtr WindowWndProc(IntPtr hWnd, NativeMethods.WindowMessage Msg, IntPtr wParam, IntPtr lParam)
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{
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switch (Msg)
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{
207+
case NativeMethods.WindowMessage.WM_SYSMENU:
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{
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return (IntPtr)0;
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}
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212+
case NativeMethods.WindowMessage.WM_SYSCOMMAND:
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{
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NativeMethods.SystemCommand sysCommand = (NativeMethods.SystemCommand)(wParam.ToInt32() & 0xFFF0);
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if (sysCommand is NativeMethods.SystemCommand.SC_MOUSEMENU)
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{
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FlyoutShowOptions options = new FlyoutShowOptions();
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options.Position = new Windows.Foundation.Point(0, 15);
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options.ShowMode = FlyoutShowMode.Standard;
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MenuFlyout.ShowAt(null, options);
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return (IntPtr)0;
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}
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else if (sysCommand is NativeMethods.SystemCommand.SC_KEYMENU)
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{
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FlyoutShowOptions options = new FlyoutShowOptions();
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options.Position = new Windows.Foundation.Point(0, 45);
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options.ShowMode = FlyoutShowMode.Standard;
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MenuFlyout.ShowAt(null, options);
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return (IntPtr)0;
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}
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break;
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}
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}
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return WndProcHelper.CallWindowProc(hWnd, Msg, wParam, lParam);
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}
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}
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#endif

‎components/TitleBar/src/WndProcHelper.cs‎

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using System.Runtime.InteropServices;
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using WinRT.Interop;
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namespace CommunityToolkit.WinUI.Controls;
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internal class WndProcHelper
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{
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public delegate IntPtr WNDPROC(IntPtr hWnd, NativeMethods.WindowMessage Msg, IntPtr wParam, IntPtr lParam);
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private IntPtr Handle { get; set; }
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private WNDPROC newMainWindowWndProc = null;
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private IntPtr oldMainWindowWndProc = IntPtr.Zero;
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private WNDPROC newInputNonClientPointerSourceWndProc = null;
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private IntPtr oldInputNonClientPointerSourceWndProc = IntPtr.Zero;
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public WndProcHelper(Window window)
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{
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Handle = WindowNative.GetWindowHandle(window);
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}
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public IntPtr CallWindowProc(IntPtr hWnd, NativeMethods.WindowMessage Msg, IntPtr wParam, IntPtr lParam)
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{
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return NativeMethods.CallWindowProc(oldMainWindowWndProc, hWnd, Msg, wParam, lParam);
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}
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public IntPtr CallInputNonClientPointerSourceWindowProc(IntPtr hWnd, NativeMethods.WindowMessage Msg, IntPtr wParam, IntPtr lParam)
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{
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return NativeMethods.CallWindowProc(oldInputNonClientPointerSourceWndProc, hWnd, Msg, wParam, lParam);
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}
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public void RegisterWndProc(WNDPROC wndProc)
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{
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newMainWindowWndProc = wndProc;
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oldMainWindowWndProc = NativeMethods.SetWindowLongAuto(Handle, (int)NativeMethods.WindowLongIndexFlags.GWL_WNDPROC, Marshal.GetFunctionPointerForDelegate(newMainWindowWndProc));
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}
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public void RegisterInputNonClientPointerSourceWndProc(WNDPROC wndProc)
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{
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IntPtr inputNonClientPointerSourceHandle = NativeMethods.FindWindowEx(Handle, IntPtr.Zero, "InputNonClientPointerSource", null);
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40+
if (inputNonClientPointerSourceHandle != IntPtr.Zero)
41+
{
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int style = NativeMethods.GetWindowLongAuto(Handle, (int)NativeMethods.WindowLongIndexFlags.GWL_STYLE);
43+
NativeMethods.SetWindowLongAuto(Handle, (int)NativeMethods.WindowLongIndexFlags.GWL_STYLE, (IntPtr)(style & ~(int)NativeMethods.WindowStyle.WS_SYSMENU));
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newInputNonClientPointerSourceWndProc = wndProc;
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oldInputNonClientPointerSourceWndProc = NativeMethods.SetWindowLongAuto(inputNonClientPointerSourceHandle, (int)NativeMethods.WindowLongIndexFlags.GWL_WNDPROC, Marshal.GetFunctionPointerForDelegate(newInputNonClientPointerSourceWndProc));
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}
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}
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}

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