From 6f2eb504ab64ce3831d52b780329614ee11d0bb4 Mon Sep 17 00:00:00 2001
From: ww-rm <ww-rm@qq.com>
Date: Sun, 9 Nov 2025 12:29:41 +0800
Subject: [PATCH] =?UTF-8?q?=E5=AE=8C=E5=96=84=E5=B5=8C=E5=85=A5=E9=80=BB?=
 =?UTF-8?q?=E8=BE=91?=
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---
 SpineViewer/Views/MainWindow.xaml.cs | 18 +++++++++++++-----
 Win32Natives/User32.cs               |  2 +-
 2 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/SpineViewer/Views/MainWindow.xaml.cs b/SpineViewer/Views/MainWindow.xaml.cs
index aa60aff..6844fbc 100644
--- a/SpineViewer/Views/MainWindow.xaml.cs
+++ b/SpineViewer/Views/MainWindow.xaml.cs
@@ -449,17 +449,25 @@ public partial class MainWindow : Window
                     _logger.Error("Failed to enable wallpaper view, WorkerW not found");
                     return;
                 }
-                var handle = wnd.SystemHandle;
 
                 User32.GetPrimaryScreenResolution(out var sw, out var sh);
+                _vm.SFMLRendererViewModel.SetResolution(sw, sh);
 
-                User32.SetParent(handle, workerw);
+                var handle = wnd.SystemHandle;
+
+                // 每次都进行设置, 确保会成为顶层子窗口
+                var lastParent = User32.SetParent(handle, workerw);
+                Debug.WriteLine($"0x{lastParent:x8} = SetParent(0x{handle:x8}, 0x{workerw:x8})");
                 User32.SetLayeredWindowAttributes(handle, 0, byte.MaxValue, User32.LWA_ALPHA);
 
-                _vm.SFMLRendererViewModel.SetResolution(sw, sh);
+                // XXX: 每次新设置成桌面子窗口之后, 要确保窗口 Size 发生一次变化来触发 SFML 内部的渲染视图更新
+                var ssize = new SFML.System.Vector2u(sw, sh);
+                if (lastParent != workerw && ssize == wnd.Size)
+                {
+                    wnd.Size = new(sw + 1, sh);
+                }
                 wnd.Position = new(0, 0);
-                wnd.Size = new(sw + 1, sh);
-                wnd.Size = new(sw, sh);
+                wnd.Size = ssize;
                 wnd.SetVisible(true);
             }
             else
diff --git a/Win32Natives/User32.cs b/Win32Natives/User32.cs
index 1dd4a09..0d25a62 100644
--- a/Win32Natives/User32.cs
+++ b/Win32Natives/User32.cs
@@ -316,7 +316,7 @@ namespace Win32Natives
                 workerw = FindWindowEx(progman, IntPtr.Zero, "WorkerW", null);
             }
 
-            Debug.WriteLine($"HWND(WorkerW): {workerw:x8}");
+            Debug.WriteLine($"HWND(WorkerW): 0x{workerw:x8}");
             return workerw;
         }