win32u: Move NtUserGetClipboardFormatName implementation from user32.

dlls/user32/clipboard.c

@@ -82,7 +82,7 @@ static const char *debugstr_format( UINT id )
 {
     WCHAR buffer[256];
     DWORD le = GetLastError();
-    BOOL r = GetClipboardFormatNameW( id, buffer, 256 );
+    BOOL r = NtUserGetClipboardFormatName( id, buffer, 256 );
     SetLastError(le);
 
     if (r)
@@ -659,16 +659,6 @@ UINT WINAPI RegisterClipboardFormatA( LPCSTR name )
 
 
 /**************************************************************************
- *		GetClipboardFormatNameW (USER32.@)
- */
-INT WINAPI GetClipboardFormatNameW( UINT format, LPWSTR buffer, INT maxlen )
-{
-    if (format < MAXINTATOM || format > 0xffff) return 0;
-    return GlobalGetAtomNameW( format, buffer, maxlen );
-}
-
-
-/**************************************************************************
  *		GetClipboardFormatNameA (USER32.@)
  */
 INT WINAPI GetClipboardFormatNameA( UINT format, LPSTR buffer, INT maxlen )

dlls/user32/user32.spec

@@ -276,7 +276,7 @@
 @ stdcall GetClipCursor(ptr)
 @ stdcall GetClipboardData(long)
 @ stdcall GetClipboardFormatNameA(long ptr long)
-@ stdcall GetClipboardFormatNameW(long ptr long)
+@ stdcall GetClipboardFormatNameW(long ptr long) NtUserGetClipboardFormatName
 @ stdcall GetClipboardOwner()
 @ stdcall GetClipboardSequenceNumber ()
 @ stdcall GetClipboardViewer()

dlls/win32u/clipboard.c

@@ -53,3 +53,28 @@ INT WINAPI NtUserCountClipboardFormats(void)
     TRACE( "returning %d\n", count );
     return count;
 }
+
+/**************************************************************************
+ *	     NtUserGetClipboardFormatName    (win32u.@)
+ */
+INT WINAPI NtUserGetClipboardFormatName( UINT format, WCHAR *buffer, INT maxlen )
+{
+    char buf[sizeof(ATOM_BASIC_INFORMATION) + 255 * sizeof(WCHAR)];
+    ATOM_BASIC_INFORMATION *abi = (ATOM_BASIC_INFORMATION *)buf;
+    UINT length = 0;
+
+    if (format < MAXINTATOM || format > 0xffff) return 0;
+    if (maxlen <= 0)
+    {
+        SetLastError( ERROR_MORE_DATA );
+        return 0;
+    }
+    if (!set_ntstatus( NtQueryInformationAtom( format, AtomBasicInformation,
+                                               buf, sizeof(buf), NULL )))
+        return 0;
+
+    length = min( abi->NameLength / sizeof(WCHAR), maxlen - 1 );
+    if (length) memcpy( buffer, abi->Name, length * sizeof(WCHAR) );
+    buffer[length] = 0;
+    return length;
+}

dlls/win32u/syscall.c

@@ -105,6 +105,7 @@ static void * const syscalls[] =
     NtUserCloseWindowStation,
     NtUserCreateDesktopEx,
     NtUserCreateWindowStation,
+    NtUserGetClipboardFormatName,
     NtUserGetLayeredWindowAttributes,
     NtUserGetObjectInformation,
     NtUserGetProcessWindowStation,

dlls/win32u/win32u.spec

@@ -903,7 +903,7 @@
 @ stub NtUserGetClipCursor
 @ stub NtUserGetClipboardAccessToken
 @ stub NtUserGetClipboardData
-@ stub NtUserGetClipboardFormatName
+@ stdcall -syscall NtUserGetClipboardFormatName(long ptr long)
 @ stub NtUserGetClipboardOwner
 @ stub NtUserGetClipboardSequenceNumber
 @ stub NtUserGetClipboardViewer

dlls/win32u/win32u_private.h

@@ -232,6 +232,12 @@ extern ULONG query_reg_ascii_value( HKEY hkey, const char *name,
 
 extern const struct user_driver_funcs *user_driver DECLSPEC_HIDDEN;
 
+static inline BOOL set_ntstatus( NTSTATUS status )
+{
+    if (status) SetLastError( RtlNtStatusToDosError( status ));
+    return !status;
+}
+
 static inline WCHAR *win32u_wcsrchr( const WCHAR *str, WCHAR ch )
 {
     WCHAR *ret = NULL;

dlls/wow64win/syscall.h

@@ -92,6 +92,7 @@
     SYSCALL_ENTRY( NtUserCloseWindowStation ) \
     SYSCALL_ENTRY( NtUserCreateDesktopEx ) \
     SYSCALL_ENTRY( NtUserCreateWindowStation ) \
+    SYSCALL_ENTRY( NtUserGetClipboardFormatName ) \
     SYSCALL_ENTRY( NtUserGetLayeredWindowAttributes ) \
     SYSCALL_ENTRY( NtUserGetObjectInformation ) \
     SYSCALL_ENTRY( NtUserGetProcessWindowStation ) \

dlls/wow64win/user.c

@@ -190,3 +190,12 @@ NTSTATUS WINAPI wow64_NtUserGetLayeredWindowAttributes( UINT *args )
 
     return NtUserGetLayeredWindowAttributes( hwnd, key, alpha, flags );
 }
+
+NTSTATUS WINAPI wow64_NtUserGetClipboardFormatName( UINT *args )
+{
+    UINT format = get_ulong( &args );
+    WCHAR *buffer = get_ptr( &args );
+    INT maxlen = get_ulong( &args );
+
+    return NtUserGetClipboardFormatName( format, buffer, maxlen );
+}

include/ntuser.h

@@ -31,6 +31,7 @@ HDESK   WINAPI NtUserCreateDesktopEx( OBJECT_ATTRIBUTES *attr, UNICODE_STRING *d
                                       ULONG heap_size );
 HWINSTA WINAPI NtUserCreateWindowStation( OBJECT_ATTRIBUTES *attr, ACCESS_MASK mask, ULONG arg3,
                                           ULONG arg4, ULONG arg5, ULONG arg6, ULONG arg7 );
+INT     WINAPI NtUserGetClipboardFormatName( UINT format, WCHAR *buffer, INT maxlen );
 BOOL    WINAPI NtUserGetLayeredWindowAttributes( HWND hwnd, COLORREF *key, BYTE *alpha, DWORD *flags );
 BOOL    WINAPI NtUserGetObjectInformation( HANDLE handle, INT index, void *info,
                                            DWORD len, DWORD *needed );