Move GetWindowText to Core (#12397)

Move GetWindowText and MapWindowPoints to Core.

Also add cast operators for HandleRef to faciliate converting between the generic and non-generic version to help WPF which publically exposes the generic version.

src/System.Private.Windows.Core/src/NativeMethods.txt

@@ -74,6 +74,8 @@ FDEX_PROP_FLAGS
 FILETIME
 GetCurrentThreadId
 GetSysColorBrush
+GetWindowText
+GetWindowTextLength
 GdipBitmapLockBits
 GdipBitmapUnlockBits
 GdipCreateFromHWND
@@ -156,6 +158,7 @@ LoadIcon
 LoadRegTypeLib
 LPARAM
 LRESULT
+MapWindowPoints
 MAX_PATH
 MonitorFromPoint
 MonitorFromRect

src/System.Private.Windows.Core/src/Windows/Win32/Foundation/HandleRef.cs

@@ -1,11 +1,24 @@
 // Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
 namespace Windows.Win32.Foundation;
 
 /// <summary>
 ///  Adapter to use when owning classes cannot directly implement <see cref="IHandle{T}"/>.
 /// </summary>
+/// <remarks>
+///  <para>
+///   Whenever you need to keep the owning object from being finalized during interop calls, use
+///   <see cref="GC.KeepAlive(object?)"/> on the <see cref="Wrapper"/> <see langword="object"/>.
+///  </para>
+///  <para>
+///   This is the typed equivalent of <see cref="HandleRef"/>. Marshalling doesn't know this, and while one
+///   could write a custom marshaler, we want our imports to do no marshalling for performance and trimming reasons.
+///  </para>
+/// </remarks>
 internal readonly struct HandleRef<THandle> : IHandle<THandle>, IEquatable<HandleRef<THandle>>
     where THandle : unmanaged, IEquatable<THandle>
 {
@@ -36,5 +49,27 @@ internal readonly struct HandleRef<THandle> : IHandle<THandle>, IEquatable<Handl
     public static bool operator ==(HandleRef<THandle> left, HandleRef<THandle> right) => left.Equals(right);
     public static bool operator !=(HandleRef<THandle> left, HandleRef<THandle> right) => !(left == right);
 
+    public static unsafe explicit operator HandleRef(HandleRef<THandle> handle)
+    {
+        if (sizeof(nint) != sizeof(THandle))
+        {
+            throw new InvalidCastException();
+        }
+
+        THandle local = handle.Handle;
+        return new(handle.Wrapper, Unsafe.As<THandle, nint>(ref local));
+    }
+
+    public static unsafe explicit operator HandleRef<THandle>(HandleRef handle)
+    {
+        if (sizeof(nint) != sizeof(THandle))
+        {
+            throw new InvalidCastException();
+        }
+
+        nint local = handle.Handle;
+        return new(handle.Wrapper, Unsafe.As<nint, THandle>(ref local));
+    }
+
     public bool IsNull => Handle.Equals(default);
 }

src/System.Private.Windows.Core/src/Windows/Win32/PInvoke.GetWindowText.cs

@@ -9,7 +9,7 @@ using System.Runtime.InteropServices;
 
 namespace Windows.Win32;
 
-internal static partial class PInvoke
+internal static partial class PInvokeCore
 {
     [SkipLocalsInit]
     public static unsafe string GetWindowText<T>(T hWnd) where T : IHandle<HWND>

src/System.Private.Windows.Core/src/Windows/Win32/PInvoke.GetWindowTextLength.cs

@@ -3,7 +3,7 @@
 
 namespace Windows.Win32;
 
-internal static partial class PInvoke
+internal static partial class PInvokeCore
 {
     /// <inheritdoc cref="GetWindowTextLength(HWND)"/>
     public static int GetWindowTextLength<T>(T hWnd) where T : IHandle<HWND>

src/System.Private.Windows.Core/src/Windows/Win32/PInvoke.MapWindowPoints.cs

@@ -5,7 +5,7 @@ using System.Drawing;
 
 namespace Windows.Win32;
 
-internal static partial class PInvoke
+internal static partial class PInvokeCore
 {
     /// <inheritdoc cref="MapWindowPoints(HWND, HWND, Point*, uint)"/>
     public static unsafe int MapWindowPoints<TFrom, TTo>(TFrom hWndFrom, TTo hWndTo, ref RECT lpRect)

src/System.Windows.Forms.Design/src/System/ComponentModel/Design/MultilineStringEditor.MultilineStringEditorUI.cs

@@ -334,7 +334,7 @@ public sealed partial class MultilineStringEditor
                     return string.Empty;
                 }
 
-                string windowText = PInvoke.GetWindowText(this);
+                string windowText = PInvokeCore.GetWindowText(this);
                 if (!_ctrlEnterPressed)
                 {
                     return windowText;

src/System.Windows.Forms.Design/src/System/Windows/Forms/Design/Behavior/BehaviorService.cs

@@ -270,7 +270,7 @@ public sealed partial class BehaviorService : IDisposable
         }
 
         Point pt = new(c.Left, c.Top);
-        PInvoke.MapWindowPoints(c.Parent, _adornerWindow, ref pt);
+        PInvokeCore.MapWindowPoints(c.Parent, _adornerWindow, ref pt);
         if (c.Parent.IsMirrored)
         {
             pt.X -= c.Width;
@@ -284,7 +284,7 @@ public sealed partial class BehaviorService : IDisposable
     /// </summary>
     public Point MapAdornerWindowPoint(IntPtr handle, Point pt)
     {
-        PInvoke.MapWindowPoints((HWND)handle, _adornerWindow, ref pt);
+        PInvokeCore.MapWindowPoints((HWND)handle, _adornerWindow, ref pt);
         return pt;
     }
 

src/System.Windows.Forms.Design/src/System/Windows/Forms/Design/ControlDesigner.cs

@@ -287,7 +287,7 @@ public partial class ControlDesigner : ComponentDesigner
         Point nativeOffset = default;
         if (Control.Parent is { } parent)
         {
-            PInvoke.MapWindowPoints(Control, parent, ref nativeOffset);
+            PInvokeCore.MapWindowPoints(Control, parent, ref nativeOffset);
         }
 
         Point offset = Control.Location;
@@ -1778,7 +1778,7 @@ public partial class ControlDesigner : ComponentDesigner
         if (m.MsgInternal >= PInvokeCore.WM_MOUSEFIRST && m.MsgInternal <= PInvokeCore.WM_MOUSELAST)
         {
             location = PARAM.ToPoint(m.LParamInternal);
-            PInvoke.MapWindowPoints(m, (HWND)default, ref location);
+            PInvokeCore.MapWindowPoints(m, (HWND)default, ref location);
         }
         else if (m.MsgInternal >= PInvokeCore.WM_NCMOUSEMOVE && m.MsgInternal <= PInvokeCore.WM_NCMBUTTONDBLCLK)
         {
@@ -2068,9 +2068,9 @@ public partial class ControlDesigner : ComponentDesigner
                     {
                         // Re-map the clip rect we pass to the paint event args to our child coordinates.
                         Point point = default;
-                        PInvoke.MapWindowPoints(m.HWND, Control, ref point);
+                        PInvokeCore.MapWindowPoints(m.HWND, Control, ref point);
                         graphics.TranslateTransform(-point.X, -point.Y);
-                        PInvoke.MapWindowPoints(m.HWND, Control, ref clip);
+                        PInvokeCore.MapWindowPoints(m.HWND, Control, ref clip);
                     }
 
                     Rectangle paintRect = clip;

src/System.Windows.Forms.Design/src/System/Windows/Forms/Design/ListViewDesigner.cs

@@ -83,7 +83,7 @@ internal class ListViewDesigner : ControlDesigner
                 HWND headerHwnd = (HWND)PInvokeCore.SendMessage(listView, PInvoke.LVM_GETHEADER);
                 if (hwndHit == headerHwnd)
                 {
-                    PInvoke.MapWindowPoints(HWND.Null, headerHwnd, ref point);
+                    PInvokeCore.MapWindowPoints(HWND.Null, headerHwnd, ref point);
                     _hdrhit.pt = point;
                     PInvokeCore.SendMessage(headerHwnd, PInvoke.HDM_HITTEST, 0, ref _hdrhit);
                     if (_hdrhit.flags == HEADER_HITTEST_INFO_FLAGS.HHT_ONDIVIDER)

src/System.Windows.Forms.Design/src/System/Windows/Forms/Design/ToolStripAdornerWindowService.cs

@@ -108,7 +108,7 @@ internal sealed class ToolStripAdornerWindowService : IDisposable
         }
 
         Point pt = new(c.Left, c.Top);
-        PInvoke.MapWindowPoints(c.Parent, _toolStripAdornerWindow, ref pt);
+        PInvokeCore.MapWindowPoints(c.Parent, _toolStripAdornerWindow, ref pt);
         return pt;
     }
 

src/System.Windows.Forms.Primitives/src/NativeMethods.txt

@@ -239,8 +239,6 @@ GetViewportExtEx
 GetWindow
 GetWindowDpiAwarenessContext
 GetWindowPlacement
-GetWindowText
-GetWindowTextLength
 GetWindowThreadProcessId
 GetWorldTransform
 GMR_*
@@ -456,7 +454,6 @@ LVTILEVIEWINFO_FLAGS
 LVTILEVIEWINFO_MASK
 MA_*
 MapVirtualKey
-MapWindowPoints
 MAX_TAB_STOPS
 MCGRIDINFO
 MCGRIDINFO_FLAGS

src/System.Windows.Forms.Primitives/tests/UnitTests/Interop/User32/GetWindowTextTests.cs

@@ -34,7 +34,7 @@ public class GetWindowTextTests
             windowClass.BeforeGetTextLengthCallback = () => shortText;
         }
 
-        string result = PInvoke.GetWindowText(windowHandle);
+        string result = PInvokeCore.GetWindowText(windowHandle);
         PInvoke.DestroyWindow(windowHandle);
 
         Assert.Equal(longText, result);

src/System.Windows.Forms/src/System/Windows/Forms/Accessibility/LabelEditAccessibleObject.cs

@@ -66,7 +66,7 @@ internal unsafe class LabelEditAccessibleObject : AccessibleObject
     };
 
     public override string? Name => _labelEdit.TryGetTarget(out var target)
-        ? PInvoke.GetWindowText(target)
+        ? PInvokeCore.GetWindowText(target)
         : null;
 
     private protected override bool IsInternal => true;

src/System.Windows.Forms/src/System/Windows/Forms/Accessibility/LabelEditUiaTextProvider.cs

@@ -61,7 +61,7 @@ internal sealed unsafe class LabelEditUiaTextProvider : UiaTextProvider
 
     public override SupportedTextSelection SupportedTextSelection => SupportedTextSelection.SupportedTextSelection_Single;
 
-    public override string Text => PInvoke.GetWindowText(_owningChildEdit);
+    public override string Text => PInvokeCore.GetWindowText(_owningChildEdit);
 
     public override int TextLength => (int)PInvokeCore.SendMessage(_owningChildEdit, PInvokeCore.WM_GETTEXTLENGTH);
 
@@ -225,7 +225,7 @@ internal sealed unsafe class LabelEditUiaTextProvider : UiaTextProvider
 
     public override Point PointToScreen(Point pt)
     {
-        PInvoke.MapWindowPoints(_owningChildEdit.Handle, HWND.Null, ref pt);
+        PInvokeCore.MapWindowPoints(_owningChildEdit.Handle, HWND.Null, ref pt);
         return pt;
     }
 
@@ -269,7 +269,7 @@ internal sealed unsafe class LabelEditUiaTextProvider : UiaTextProvider
 
         // Convert screen to client coordinates.
         // (Essentially ScreenToClient but MapWindowPoints accounts for window mirroring using WS_EX_LAYOUTRTL.)
-        if (PInvoke.MapWindowPoints(HWND.Null, _owningChildEdit.Handle, ref clientLocation) == 0)
+        if (PInvokeCore.MapWindowPoints(HWND.Null, _owningChildEdit.Handle, ref clientLocation) == 0)
         {
             *pRetVal = ComHelpers.GetComPointer<ITextRangeProvider>(
                 new UiaTextRange(
@@ -305,7 +305,7 @@ internal sealed unsafe class LabelEditUiaTextProvider : UiaTextProvider
     public override Rectangle RectangleToScreen(Rectangle rect)
     {
         RECT r = rect;
-        PInvoke.MapWindowPoints(_owningChildEdit.Handle, HWND.Null, ref r);
+        PInvokeCore.MapWindowPoints(_owningChildEdit.Handle, HWND.Null, ref r);
         return r;
     }
 

src/System.Windows.Forms/src/System/Windows/Forms/ActiveX/Control.ActiveXImpl.cs

@@ -360,7 +360,7 @@ public partial class Control
                         HWND hwndMap = hwnd.IsNull ? hwndParent : hwnd;
                         Point pt = new(PARAM.LOWORD(lpmsg->lParam), PARAM.HIWORD(lpmsg->lParam));
 
-                        PInvoke.MapWindowPoints(hwndMap, _control, ref pt);
+                        PInvokeCore.MapWindowPoints(hwndMap, _control, ref pt);
 
                         // Check to see if this message should really go to a child control, and if so, map the
                         // point into that child's window coordinates.
@@ -1812,7 +1812,7 @@ public partial class Control
                     RECT rcIntersect = intersect;
                     HWND hWndParent = PInvoke.GetParent(_control);
 
-                    PInvoke.MapWindowPoints(hWndParent, _control, ref rcIntersect);
+                    PInvokeCore.MapWindowPoints(hWndParent, _control, ref rcIntersect);
 
                     _lastClipRect = rcIntersect;
                     setRegion = true;

src/System.Windows.Forms/src/System/Windows/Forms/Control.cs

@@ -3581,7 +3581,7 @@ public unsafe partial class Control :
             }
 
             using var scope = MultithreadSafeCallScope.Create();
-            return PInvoke.GetWindowText(this);
+            return PInvokeCore.GetWindowText(this);
         }
         set
         {
@@ -8462,7 +8462,7 @@ public unsafe partial class Control :
     /// </summary>
     public Point PointToClient(Point p)
     {
-        PInvoke.MapWindowPoints((HWND)default, this, ref p);
+        PInvokeCore.MapWindowPoints((HWND)default, this, ref p);
         return p;
     }
 
@@ -8471,7 +8471,7 @@ public unsafe partial class Control :
     /// </summary>
     public Point PointToScreen(Point p)
     {
-        PInvoke.MapWindowPoints(this, (HWND)default, ref p);
+        PInvokeCore.MapWindowPoints(this, (HWND)default, ref p);
         return p;
     }
 
@@ -9250,7 +9250,7 @@ public unsafe partial class Control :
     public Rectangle RectangleToClient(Rectangle r)
     {
         RECT rect = r;
-        PInvoke.MapWindowPoints(HWND.Null, this, ref rect);
+        PInvokeCore.MapWindowPoints(HWND.Null, this, ref rect);
         return rect;
     }
 
@@ -9260,7 +9260,7 @@ public unsafe partial class Control :
     public Rectangle RectangleToScreen(Rectangle r)
     {
         RECT rect = r;
-        PInvoke.MapWindowPoints(this, HWND.Null, ref rect);
+        PInvokeCore.MapWindowPoints(this, HWND.Null, ref rect);
         return rect;
     }
 
@@ -10721,7 +10721,7 @@ public unsafe partial class Control :
             PInvokeCore.GetWindowRect(this, out rect);
             if (!GetTopLevel())
             {
-                PInvoke.MapWindowPoints(HWND.Null, PInvoke.GetParent(this), ref rect);
+                PInvokeCore.MapWindowPoints(HWND.Null, PInvoke.GetParent(this), ref rect);
             }
         }
 

src/System.Windows.Forms/src/System/Windows/Forms/Controls/ComboBox/ComboBox.ComboBoxItemAccessibleObject.cs

@@ -51,7 +51,7 @@ public partial class ComboBox
 
                 // Translate the item rect to screen coordinates
                 RECT translated = itemRect;
-                PInvoke.MapWindowPoints(listHandle, HWND.Null, ref translated);
+                PInvokeCore.MapWindowPoints(listHandle, HWND.Null, ref translated);
                 return translated;
             }
         }

src/System.Windows.Forms/src/System/Windows/Forms/Controls/ComboBox/ComboBox.ComboBoxUiaTextProvider.cs

@@ -97,7 +97,7 @@ public partial class ComboBox
 
         public override string Text
             => _owningComboBox.IsHandleCreated
-                ? PInvoke.GetWindowText(_owningChildEdit)
+                ? PInvokeCore.GetWindowText(_owningChildEdit)
                 : string.Empty;
 
         public override int TextLength
@@ -292,7 +292,7 @@ public partial class ComboBox
 
         public override Point PointToScreen(Point pt)
         {
-            PInvoke.MapWindowPoints(_owningChildEdit, (HWND)default, ref pt);
+            PInvokeCore.MapWindowPoints(_owningChildEdit, (HWND)default, ref pt);
             return pt;
         }
 
@@ -342,7 +342,7 @@ public partial class ComboBox
 
             // Convert screen to client coordinates.
             // (Essentially ScreenToClient but MapWindowPoints accounts for window mirroring using WS_EX_LAYOUTRTL.)
-            if (PInvoke.MapWindowPoints((HWND)default, _owningChildEdit, ref clientLocation) == 0)
+            if (PInvokeCore.MapWindowPoints((HWND)default, _owningChildEdit, ref clientLocation) == 0)
             {
                 *pRetVal = ComHelpers.GetComPointer<ITextRangeProvider>(
                     new UiaTextRange(

src/System.Windows.Forms/src/System/Windows/Forms/Controls/RichTextBox/RichTextBox.cs

@@ -391,7 +391,7 @@ public partial class RichTextBox : TextBoxBase
         get => base.Font;
         set
         {
-            if (!IsHandleCreated || PInvoke.GetWindowTextLength(this) <= 0)
+            if (!IsHandleCreated || PInvokeCore.GetWindowTextLength(this) <= 0)
             {
                 base.Font = value;
                 return;
@@ -1965,7 +1965,7 @@ public partial class RichTextBox : TextBoxBase
             return -1;
         }
 
-        textLength = PInvoke.GetWindowTextLength(this);
+        textLength = PInvokeCore.GetWindowTextLength(this);
         if (start == end)
         {
             start = 0;
@@ -3392,7 +3392,7 @@ public partial class RichTextBox : TextBoxBase
             LRESULT compMode = PInvokeCore.SendMessage(this, PInvokeCore.EM_GETIMECOMPMODE);
             if (compMode != PInvoke.ICM_NOTOPEN)
             {
-                int textLength = PInvoke.GetWindowTextLength(this);
+                int textLength = PInvokeCore.GetWindowTextLength(this);
                 if (selStart == selEnd && textLength == MaxLength)
                 {
                     PInvokeCore.SendMessage(this, PInvokeCore.WM_KILLFOCUS);

src/System.Windows.Forms/src/System/Windows/Forms/Controls/TextBox/TextBoxBase.TextBoxBaseUiaTextProvider.cs

@@ -107,7 +107,7 @@ public abstract partial class TextBoxBase
 
             // Convert screen to client coordinates.
             // (Essentially ScreenToClient but MapWindowPoints accounts for window mirroring using WS_EX_LAYOUTRTL.)
-            if (PInvoke.MapWindowPoints((HWND)default, Owner, ref clientLocation) == 0)
+            if (PInvokeCore.MapWindowPoints((HWND)default, Owner, ref clientLocation) == 0)
             {
                 *pRetVal = ComHelpers.GetComPointer<ITextRangeProvider>(
                     new UiaTextRange(

src/System.Windows.Forms/src/System/Windows/Forms/Controls/TextBox/TextBoxBase.cs

@@ -1089,7 +1089,7 @@ public abstract partial class TextBoxBase : Control
         // Note: Currently WinForms does not fully support surrogates. If
         // the text contains surrogate characters this property may return incorrect values.
 
-        => IsHandleCreated ? PInvoke.GetWindowTextLength(this) : Text.Length;
+        => IsHandleCreated ? PInvokeCore.GetWindowTextLength(this) : Text.Length;
 
     internal override string WindowText
     {

src/System.Windows.Forms/src/System/Windows/Forms/Controls/ToolStrips/StatusStrip.cs

@@ -586,7 +586,7 @@ public partial class StatusStrip : ToolStrip
                         gripLocation = new Point(SizeGripBounds.Right, SizeGripBounds.Bottom);
                     }
 
-                    PInvoke.MapWindowPoints(this, rootHwnd, ref gripLocation);
+                    PInvokeCore.MapWindowPoints(this, rootHwnd, ref gripLocation);
 
                     int deltaBottomEdge = Math.Abs(rootHwndClientArea.bottom - gripLocation.Y);
                     int deltaRightEdge = Math.Abs(rootHwndClientArea.right - gripLocation.X);

src/System.Windows.Forms/src/System/Windows/Forms/Controls/ToolStrips/ToolStripManager.ModalMenuFilter.cs

@@ -333,7 +333,7 @@ public static partial class ToolStripManager
                 if (activeToolStrip is not null)
                 {
                     Point translatedLocation = location;
-                    PInvoke.MapWindowPoints(hwndMouseMessageIsFrom, activeToolStrip, ref translatedLocation);
+                    PInvokeCore.MapWindowPoints(hwndMouseMessageIsFrom, activeToolStrip, ref translatedLocation);
                     if (!activeToolStrip.ClientRectangle.Contains(translatedLocation))
                     {
                         if (activeToolStrip is ToolStripDropDown activeToolStripDropDown)

src/System.Windows.Forms/src/System/Windows/Forms/Dialogs/CommonDialogs/FileDialog.cs

@@ -151,7 +151,7 @@ public abstract partial class FileDialog : CommonDialog
         set => SetOption(OFN_NODEREFERENCELINKS, !value);
     }
 
-    private protected string DialogCaption => PInvoke.GetWindowText(_dialogHWnd);
+    private protected string DialogCaption => PInvokeCore.GetWindowText(_dialogHWnd);
 
     /// <summary>
     ///  Gets or sets a string containing the file name selected in the file dialog box.

src/System.Windows.Forms/src/System/Windows/Forms/Internal/WinFormsUtils.cs

@@ -158,7 +158,7 @@ internal sealed partial class WindowsFormsUtils
         }
 
 #if DEBUG
-        string windowText = PInvoke.GetWindowText(hwnd);
+        string windowText = PInvokeCore.GetWindowText(hwnd);
         string typeOfControl = "Unknown";
         string nameOfControl = "";
         Control? c = Control.FromHandle(hwnd);
@@ -283,7 +283,7 @@ internal sealed partial class WindowsFormsUtils
     /// </remarks>
     public static Point TranslatePoint(Point point, Control fromControl, Control toControl)
     {
-        PInvoke.MapWindowPoints(fromControl, toControl, ref point);
+        PInvokeCore.MapWindowPoints(fromControl, toControl, ref point);
         return point;
     }
 

src/System.Windows.Forms/src/System/Windows/Forms/ToolTip/ToolTip.cs

@@ -2052,7 +2052,7 @@ public partial class ToolTip : Component, IExtenderProvider, IHandle<HWND>
             // Use GetWindowText instead of GetCaptionForTool to retrieve the actual caption.
             // GetCaptionForTool doesn't work correctly when the text for a tool is retrieved
             // by TTN_NEEDTEXT notification (e.g. TabPages of TabControl).
-            AnnounceText(toolControl, PInvoke.GetWindowText(this));
+            AnnounceText(toolControl, PInvokeCore.GetWindowText(this));
         }
 
         // We need to re-get the rectangle of the tooltip here because

src/System.Windows.Forms/tests/IntegrationTests/System.Windows.Forms.IntegrationTests.Common/TestHelpers.cs

@@ -442,7 +442,7 @@ public static class TestHelpers
 
         HWND foregroundWindow = PInvokeCore.GetForegroundWindow();
 
-        string windowTitle = PInvoke.GetWindowText(foregroundWindow);
+        string windowTitle = PInvokeCore.GetWindowText(foregroundWindow);
 
         if (PInvoke.GetWindowThreadProcessId(foregroundWindow, out uint processId) == 0 ||
             processId != process.Id)

src/System.Windows.Forms/tests/IntegrationTests/UIIntegrationTests/Infra/SendInput.cs

@@ -85,7 +85,7 @@ public class SendInput
         // Move the window into the foreground as it may not have been achieved by the 'SetWindowPos' call
         if (!PInvoke.SetForegroundWindow(window))
         {
-            string windowTitle = PInvoke.GetWindowText(window);
+            string windowTitle = PInvokeCore.GetWindowText(window);
             if (PInvoke.GetWindowThreadProcessId(window, out uint processId) == 0 || processId != Environment.ProcessId)
             {
                 string message = $"ForegroundWindow doesn't belong the test process! The current window HWND: {window}, title:{windowTitle}.";