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Use WindowInteropHelper to get the window handle #4555

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Merged
punker76 merged 1 commit into from
Sep 12, 2025
+4 −13
Merged

Use WindowInteropHelper to get the window handle #4555

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17 changes: 4 additions & 13 deletions src/MahApps.Metro/Controls/MetroWindow.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,6 @@
using System.ComponentModel;
using System.Diagnostics.CodeAnalysis;
using System.Linq;
using System.Reflection;
using System.Windows;
using System.Windows.Automation;
using System.Windows.Automation.Peers;
Expand All @@ -18,6 +17,7 @@
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Windows.Controls.Primitives;
using System.Windows.Interop;
using Windows.Win32;
using Windows.Win32.Foundation;
using ControlzEx;
Expand Down Expand Up @@ -220,7 +220,7 @@ public static readonly DependencyProperty ShowFlyoutsOverDialogsProperty
if (d is MetroWindow window && window.Flyouts != null)
{
// It's not allowed to change this if any Flyout is open
// TODO Find a way to reset the zIndex of any open Flyout if <see cref="ShowFlyoutsOverDialogs"/> is changed by the user
// TODO Find a way to reset the zIndex of any open Flyout if <see cref="ShowFlyoutsOverDialogs"/> is changed by the user
var anyFlyoutOpen = window.Flyouts.GetFlyouts().Any(f => f.IsOpen);
if (anyFlyoutOpen)
{
Expand Down Expand Up @@ -1457,16 +1457,6 @@ protected override AutomationPeer OnCreateAutomationPeer()
return new MetroWindowAutomationPeer(this);
}

protected internal IntPtr CriticalHandle
{
get
{
this.VerifyAccess();
var value = typeof(Window).GetProperty("CriticalHandle", BindingFlags.NonPublic | BindingFlags.Instance)?.GetValue(this, new object[0]) ?? IntPtr.Zero;
return (IntPtr)value;
}
}

private void ClearWindowEvents()
{
if (this.windowTitleThumb != null)
Expand Down Expand Up @@ -1642,7 +1632,8 @@ internal static void DoWindowTitleThumbMoveOnDragDelta(IMetroThumb? thumb, Metro
var wpfPoint = window.PointToScreen(Mouse.GetPosition(window));
var x = (int)wpfPoint.X;
var y = (int)wpfPoint.Y;
PInvoke.SendMessage(new HWND(window.CriticalHandle), PInvoke.WM_NCLBUTTONDOWN, new WPARAM((nuint)HT.CAPTION), new IntPtr(x | (y << 16)));
var windowHandle = new WindowInteropHelper(window).EnsureHandle();
PInvoke.SendMessage(new HWND(windowHandle), PInvoke.WM_NCLBUTTONDOWN, new WPARAM((nuint)HT.CAPTION), new IntPtr(x | (y << 16)));
}

internal static void DoWindowTitleThumbChangeWindowStateOnMouseDoubleClick(MetroWindow window, MouseButtonEventArgs mouseButtonEventArgs)
Expand Down
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