From d312083e0add3a5752f6fd6e265a667f22d71af7 Mon Sep 17 00:00:00 2001
From: Jacek Caban <jacek@codeweavers.com>
Date: Tue, 8 Mar 2022 14:23:45 +0100
Subject: [PATCH] win32u: Move GetWindowTextLength implementation from user32.

Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
---
 dlls/user32/win.c    | 29 ++---------------------------
 dlls/win32u/window.c |  2 ++
 include/ntuser.h     |  1 +
 3 files changed, 5 insertions(+), 27 deletions(-)

diff --git a/dlls/user32/win.c b/dlls/user32/win.c
index 9c2ceedd6a3..0aa0a0b6f08 100644
--- a/dlls/user32/win.c
+++ b/dlls/user32/win.c
@@ -399,31 +399,6 @@ void update_window_state( HWND hwnd )
 }
 
 
-/*******************************************************************
- *		get_server_window_text
- *
- * Retrieve the window text from the server.
- */
-static data_size_t get_server_window_text( HWND hwnd, WCHAR *text, data_size_t count )
-{
-    data_size_t len = 0, needed = 0;
-
-    SERVER_START_REQ( get_window_text )
-    {
-        req->handle = wine_server_user_handle( hwnd );
-        if (count) wine_server_set_reply( req, text, (count - 1) * sizeof(WCHAR) );
-        if (!wine_server_call_err( req ))
-        {
-            needed = reply->length;
-            len = wine_server_reply_size(reply);
-        }
-    }
-    SERVER_END_REQ;
-    if (text) text[len / sizeof(WCHAR)] = 0;
-    return needed;
-}
-
-
 /*******************************************************************
  *           get_hwnd_message_parent
  *
@@ -3023,7 +2998,7 @@ INT WINAPI GetWindowTextLengthA( HWND hwnd )
 
     /* when window belongs to other process, don't send a message */
     GetCPInfo( CP_ACP, &info );
-    return get_server_window_text( hwnd, NULL, 0 ) * info.MaxCharSize;
+    return NtUserCallHwnd( hwnd, NtUserGetWindowTextLength ) * info.MaxCharSize;
 }
 
 /*******************************************************************
@@ -3034,7 +3009,7 @@ INT WINAPI GetWindowTextLengthW( HWND hwnd )
     if (WIN_IsCurrentProcess( hwnd )) return SendMessageW( hwnd, WM_GETTEXTLENGTH, 0, 0 );
 
     /* when window belongs to other process, don't send a message */
-    return get_server_window_text( hwnd, NULL, 0 );
+    return NtUserCallHwnd( hwnd, NtUserGetWindowTextLength );
 }
 
 
diff --git a/dlls/win32u/window.c b/dlls/win32u/window.c
index 93ee0ffd164..168195dcd44 100644
--- a/dlls/win32u/window.c
+++ b/dlls/win32u/window.c
@@ -475,6 +475,8 @@ DWORD WINAPI NtUserCallHwnd( HWND hwnd, DWORD code )
 {
     switch (code)
     {
+    case NtUserGetWindowTextLength:
+        return get_server_window_text( hwnd, NULL, 0 );
     case NtUserIsWindow:
         return is_window( hwnd );
     default:
diff --git a/include/ntuser.h b/include/ntuser.h
index 34d75f4f726..ab46a1a5b09 100644
--- a/include/ntuser.h
+++ b/include/ntuser.h
@@ -139,6 +139,7 @@ enum
 /* NtUserCallHwnd codes, not compatible with Windows */
 enum
 {
+    NtUserGetWindowTextLength,
     NtUserIsWindow,
 };