user32: Add DragObject() stub.

dlls/user32/user32.spec

@@ -182,7 +182,7 @@
 @ stdcall DlgDirSelectExA(long ptr long long)
 @ stdcall DlgDirSelectExW(long ptr long long)
 @ stdcall DragDetect(long int64)
-@ stub DragObject
+@ stdcall DragObject(long long long long long) NtUserDragObject
 @ stdcall DrawAnimatedRects(long long ptr ptr)
 @ stdcall DrawCaption(long long ptr long)
 @ stdcall DrawCaptionTempA(long long ptr long long str long)

dlls/win32u/syscall.c

@@ -141,6 +141,7 @@ static void * const syscalls[] =
     NtUserDispatchMessage,
     NtUserDisplayConfigGetDeviceInfo,
     NtUserDragDetect,
+    NtUserDragObject,
     NtUserDrawIconEx,
     NtUserEmptyClipboard,
     NtUserEnableMenuItem,

dlls/win32u/win32u.spec

@@ -846,7 +846,7 @@
 @ stub NtUserDoSoundDisconnect
 @ stub NtUserDownlevelTouchpad
 @ stdcall -syscall NtUserDragDetect(long long long)
-@ stub NtUserDragObject
+@ stdcall -syscall NtUserDragObject(long long long long long)
 @ stub NtUserDrawAnimatedRects
 @ stub NtUserDrawCaption
 @ stdcall NtUserDrawCaptionTemp(long long ptr long long wstr long)

dlls/win32u/window.c

@@ -5539,3 +5539,13 @@ ULONG_PTR WINAPI NtUserCallHwndParam( HWND hwnd, DWORD_PTR param, DWORD code )
         return 0;
     }
 }
+
+/*******************************************************************
+ *           NtUserDragObject (win32u.@)
+ */
+DWORD WINAPI NtUserDragObject( HWND parent, HWND hwnd, UINT fmt, ULONG_PTR data, HCURSOR cursor )
+{
+    FIXME( "%p, %p, %u, %#lx, %p stub!\n", parent, hwnd, fmt, data, cursor );
+
+    return 0;
+}

dlls/wow64win/syscall.h

@@ -127,6 +127,7 @@
     SYSCALL_ENTRY( NtUserDispatchMessage ) \
     SYSCALL_ENTRY( NtUserDisplayConfigGetDeviceInfo ) \
     SYSCALL_ENTRY( NtUserDragDetect ) \
+    SYSCALL_ENTRY( NtUserDragObject ) \
     SYSCALL_ENTRY( NtUserDrawIconEx ) \
     SYSCALL_ENTRY( NtUserEmptyClipboard ) \
     SYSCALL_ENTRY( NtUserEnableMenuItem ) \

dlls/wow64win/user.c

@@ -1558,6 +1558,17 @@ NTSTATUS WINAPI wow64_NtUserDragDetect( UINT *args )
     return NtUserDragDetect( hwnd, x, y );
 }
 
+NTSTATUS WINAPI wow64_NtUserDragObject( UINT *args )
+{
+    HWND parent = get_handle( &args );
+    HWND hwnd = get_handle( &args );
+    UINT fmt = get_ulong( &args );
+    ULONG_PTR data = get_ulong( &args );
+    HCURSOR hcursor = get_handle( &args );
+
+    return NtUserDragObject( parent, hwnd, fmt, data, hcursor );
+}
+
 NTSTATUS WINAPI wow64_NtUserDrawIconEx( UINT *args )
 {
     HDC hdc = get_handle( &args );

include/ntuser.h

@@ -679,6 +679,7 @@ BOOL    WINAPI NtUserDisableThreadIme( DWORD thread_id );
 LRESULT WINAPI NtUserDispatchMessage( const MSG *msg );
 NTSTATUS WINAPI NtUserDisplayConfigGetDeviceInfo( DISPLAYCONFIG_DEVICE_INFO_HEADER *packet );
 BOOL    WINAPI NtUserDragDetect( HWND hwnd, int x, int y );
+DWORD   WINAPI NtUserDragObject( HWND parent, HWND hwnd, UINT fmt, ULONG_PTR data, HCURSOR cursor );
 BOOL    WINAPI NtUserDrawCaptionTemp( HWND hwnd, HDC hdc, const RECT *rect, HFONT font,
                                       HICON icon, const WCHAR *str, UINT flags );
 BOOL    WINAPI NtUserDrawIconEx( HDC hdc, INT x0, INT y0, HICON icon, INT width,