win32u: Move NtUserChangeClipboardChain implementation from user32.

dlls/user32/clipboard.c

@@ -703,33 +703,6 @@ BOOL WINAPI EmptyClipboard(void)
 
 
 /**************************************************************************
- *              ChangeClipboardChain (USER32.@)
- */
-BOOL WINAPI ChangeClipboardChain( HWND hwnd, HWND next )
-{
-    NTSTATUS status;
-    HWND viewer;
-
-    if (!hwnd) return FALSE;
-
-    SERVER_START_REQ( set_clipboard_viewer )
-    {
-        req->viewer = wine_server_user_handle( next );
-        req->previous = wine_server_user_handle( hwnd );
-        status = wine_server_call( req );
-        viewer = wine_server_ptr_handle( reply->old_viewer );
-    }
-    SERVER_END_REQ;
-
-    if (status == STATUS_PENDING)
-        return !SendMessageW( viewer, WM_CHANGECBCHAIN, (WPARAM)hwnd, (LPARAM)next );
-
-    if (status) SetLastError( RtlNtStatusToDosError( status ));
-    return !status;
-}
-
-
-/**************************************************************************
  *		SetClipboardData (USER32.@)
  */
 HANDLE WINAPI SetClipboardData( UINT format, HANDLE data )

dlls/user32/user32.spec

@@ -33,7 +33,7 @@
 @ stdcall CallWindowProcW(ptr long long long long)
 @ stdcall CascadeChildWindows(long long)
 @ stdcall CascadeWindows(long long ptr long ptr)
-@ stdcall ChangeClipboardChain(long long)
+@ stdcall ChangeClipboardChain(long long) NtUserChangeClipboardChain
 @ stdcall ChangeDisplaySettingsA(ptr long)
 @ stdcall ChangeDisplaySettingsExA(str ptr long long ptr)
 @ stdcall ChangeDisplaySettingsExW(wstr ptr long long ptr)

dlls/win32u/clipboard.c

@@ -275,6 +275,32 @@ HWND WINAPI NtUserGetClipboardViewer(void)
 }
 
 /**************************************************************************
+ *           NtUserChangeClipboardChain    (win32u.@)
+ */
+BOOL WINAPI NtUserChangeClipboardChain( HWND hwnd, HWND next )
+{
+    NTSTATUS status;
+    HWND viewer;
+
+    if (!hwnd) return FALSE;
+
+    SERVER_START_REQ( set_clipboard_viewer )
+    {
+        req->viewer = wine_server_user_handle( next );
+        req->previous = wine_server_user_handle( hwnd );
+        status = wine_server_call( req );
+        viewer = wine_server_ptr_handle( reply->old_viewer );
+    }
+    SERVER_END_REQ;
+
+    if (status == STATUS_PENDING)
+        return !send_message( viewer, WM_CHANGECBCHAIN, (WPARAM)hwnd, (LPARAM)next );
+
+    if (status) SetLastError( RtlNtStatusToDosError( status ));
+    return !status;
+}
+
+/**************************************************************************
  *	     NtUserGetOpenClipboardWindow    (win32u.@)
  */
 HWND WINAPI NtUserGetOpenClipboardWindow(void)

dlls/win32u/gdiobj.c

@@ -1139,6 +1139,7 @@ static struct unix_funcs unix_funcs =
     NtUserCallNoParam,
     NtUserCallOneParam,
     NtUserCallTwoParam,
+    NtUserChangeClipboardChain,
     NtUserChangeDisplaySettings,
     NtUserClipCursor,
     NtUserCloseClipboard,

dlls/win32u/win32u.spec

@@ -782,7 +782,7 @@
 @ stdcall NtUserCallOneParam(long long)
 @ stdcall NtUserCallTwoParam(long long long)
 @ stub NtUserCanBrokerForceForeground
-@ stub NtUserChangeClipboardChain
+@ stdcall NtUserChangeClipboardChain(long long)
 @ stdcall NtUserChangeDisplaySettings(ptr ptr long long ptr)
 @ stub NtUserChangeWindowMessageFilterEx
 @ stub NtUserCheckAccessForIntegrityLevel

dlls/win32u/win32u_private.h

@@ -191,6 +191,7 @@ struct unix_funcs
     ULONG_PTR (WINAPI *pNtUserCallNoParam)( ULONG code );
     ULONG_PTR (WINAPI *pNtUserCallOneParam)( ULONG_PTR arg, ULONG code );
     ULONG_PTR (WINAPI *pNtUserCallTwoParam)( ULONG_PTR arg1, ULONG_PTR arg2, ULONG code );
+    BOOL     (WINAPI *pNtUserChangeClipboardChain)( HWND hwnd, HWND next );
     LONG     (WINAPI *pNtUserChangeDisplaySettings)( UNICODE_STRING *devname, DEVMODEW *devmode, HWND hwnd,
                                                      DWORD flags, void *lparam );
     BOOL     (WINAPI *pNtUserClipCursor)( const RECT *rect );

dlls/win32u/wrappers.c

@@ -755,6 +755,12 @@ BOOL WINAPI NtUserCloseClipboard(void)
     return unix_funcs->pNtUserCloseClipboard();
 }
 
+BOOL WINAPI NtUserChangeClipboardChain( HWND hwnd, HWND next )
+{
+    if (!unix_funcs) return DISP_CHANGE_FAILED;
+    return unix_funcs->pNtUserChangeClipboardChain( hwnd, next );
+}
+
 LONG WINAPI NtUserChangeDisplaySettings( UNICODE_STRING *devname, DEVMODEW *devmode, HWND hwnd,
                                          DWORD flags, void *lparam )
 {

include/ntuser.h

@@ -417,6 +417,7 @@ LRESULT WINAPI NtUserCallNextHookEx( HHOOK hhook, INT code, WPARAM wparam, LPARA
 ULONG_PTR WINAPI NtUserCallNoParam( ULONG code );
 ULONG_PTR WINAPI NtUserCallOneParam( ULONG_PTR arg, ULONG code );
 ULONG_PTR WINAPI NtUserCallTwoParam( ULONG_PTR arg1, ULONG_PTR arg2, ULONG code );
+BOOL    WINAPI NtUserChangeClipboardChain( HWND hwnd, HWND next );
 LONG    WINAPI NtUserChangeDisplaySettings( UNICODE_STRING *devname, DEVMODEW *devmode, HWND hwnd,
                                             DWORD flags, void *lparam );
 DWORD   WINAPI NtUserCheckMenuItem( HMENU handle, UINT id, UINT flags );