Jacek Caban : win32u: Move GetParent implementation from user32.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 5da6282a60319bddb4f25b360a65441bf96b4d54
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=5da6282a60319bddb4f25b360a65441bf96b4d54

Author: Jacek Caban <jacek at codeweavers.com>
Date:   Tue Mar  8 14:24:00 2022 +0100

win32u: Move GetParent implementation from user32.

Signed-off-by: Jacek Caban <jacek at codeweavers.com>
Signed-off-by: Huw Davies <huw at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/user32/win.c            | 34 +---------------------------------
 dlls/win32u/win32u_private.h |  1 +
 dlls/win32u/window.c         | 42 +++++++++++++++++++++++++++++++++++++++++-
 include/ntuser.h             |  1 +
 4 files changed, 44 insertions(+), 34 deletions(-)

diff --git a/dlls/user32/win.c b/dlls/user32/win.c
index fb7d05b71dc..c860464125e 100644
--- a/dlls/user32/win.c
+++ b/dlls/user32/win.c
@@ -2908,39 +2908,7 @@ DWORD WINAPI GetWindowThreadProcessId( HWND hwnd, LPDWORD process )
  */
 HWND WINAPI GetParent( HWND hwnd )
 {
-    WND *wndPtr;
-    HWND retvalue = 0;
-
-    if (!(wndPtr = WIN_GetPtr( hwnd )))
-    {
-        SetLastError( ERROR_INVALID_WINDOW_HANDLE );
-        return 0;
-    }
-    if (wndPtr == WND_DESKTOP) return 0;
-    if (wndPtr == WND_OTHER_PROCESS)
-    {
-        LONG style = GetWindowLongW( hwnd, GWL_STYLE );
-        if (style & (WS_POPUP | WS_CHILD))
-        {
-            SERVER_START_REQ( get_window_tree )
-            {
-                req->handle = wine_server_user_handle( hwnd );
-                if (!wine_server_call_err( req ))
-                {
-                    if (style & WS_POPUP) retvalue = wine_server_ptr_handle( reply->owner );
-                    else if (style & WS_CHILD) retvalue = wine_server_ptr_handle( reply->parent );
-                }
-            }
-            SERVER_END_REQ;
-        }
-    }
-    else
-    {
-        if (wndPtr->dwStyle & WS_POPUP) retvalue = wndPtr->owner;
-        else if (wndPtr->dwStyle & WS_CHILD) retvalue = wndPtr->parent;
-        WIN_ReleasePtr( wndPtr );
-    }
-    return retvalue;
+    return UlongToHandle( NtUserCallHwnd( hwnd, NtUserGetParent ));
 }
 
 
diff --git a/dlls/win32u/win32u_private.h b/dlls/win32u/win32u_private.h
index e3cf939db09..a46accddd71 100644
--- a/dlls/win32u/win32u_private.h
+++ b/dlls/win32u/win32u_private.h
@@ -296,6 +296,7 @@ extern void user_check_not_lock(void) DECLSPEC_HIDDEN;
 struct tagWND;
 extern HWND is_current_thread_window( HWND hwnd ) DECLSPEC_HIDDEN;
 extern void flush_window_surfaces( BOOL idle ) DECLSPEC_HIDDEN;
+extern DWORD get_window_long( HWND hwnd, INT offset ) DECLSPEC_HIDDEN;
 extern void register_window_surface( struct window_surface *old,
                                      struct window_surface *new ) DECLSPEC_HIDDEN;
 
diff --git a/dlls/win32u/window.c b/dlls/win32u/window.c
index f24fc531f16..eb49d9bf237 100644
--- a/dlls/win32u/window.c
+++ b/dlls/win32u/window.c
@@ -361,6 +361,44 @@ static DWORD get_window_thread( HWND hwnd, DWORD *process )
     return tid;
 }
 
+/* see GetParent */
+static HWND get_parent( HWND hwnd )
+{
+    HWND retval = 0;
+    WND *win;
+
+    if (!(win = get_win_ptr( hwnd )))
+    {
+        SetLastError( ERROR_INVALID_WINDOW_HANDLE );
+        return 0;
+    }
+    if (win == WND_DESKTOP) return 0;
+    if (win == WND_OTHER_PROCESS)
+    {
+        LONG style = get_window_long( hwnd, GWL_STYLE );
+        if (style & (WS_POPUP | WS_CHILD))
+        {
+            SERVER_START_REQ( get_window_tree )
+            {
+                req->handle = wine_server_user_handle( hwnd );
+                if (!wine_server_call_err( req ))
+                {
+                    if (style & WS_POPUP) retval = wine_server_ptr_handle( reply->owner );
+                    else if (style & WS_CHILD) retval = wine_server_ptr_handle( reply->parent );
+                }
+            }
+            SERVER_END_REQ;
+        }
+    }
+    else
+    {
+        if (win->dwStyle & WS_POPUP) retval = win->owner;
+        else if (win->dwStyle & WS_CHILD) retval = win->parent;
+        release_win_ptr( win );
+    }
+    return retval;
+}
+
 /* see GetWindow */
 static HWND get_window_relative( HWND hwnd, UINT rel )
 {
@@ -557,7 +595,7 @@ static LONG_PTR get_window_long_size( HWND hwnd, INT offset, UINT size, BOOL ans
 }
 
 /* see GetWindowLongW */
-static DWORD get_window_long( HWND hwnd, INT offset )
+DWORD get_window_long( HWND hwnd, INT offset )
 {
     return get_window_long_size( hwnd, offset, sizeof(LONG), FALSE );
 }
@@ -757,6 +795,8 @@ DWORD WINAPI NtUserCallHwnd( HWND hwnd, DWORD code )
 {
     switch (code)
     {
+    case NtUserGetParent:
+        return HandleToUlong( get_parent( hwnd ));
     case NtUserGetWindowTextLength:
         return get_server_window_text( hwnd, NULL, 0 );
     case NtUserIsWindow:
diff --git a/include/ntuser.h b/include/ntuser.h
index 3021a8a9af4..8ae916e57bd 100644
--- a/include/ntuser.h
+++ b/include/ntuser.h
@@ -139,6 +139,7 @@ enum
 /* NtUserCallHwnd codes, not compatible with Windows */
 enum
 {
+    NtUserGetParent,
     NtUserGetWindowTextLength,
     NtUserIsWindow,
 };