Very rough implementation of EnableMouseInPointer function

#219

Author: Kron4ek

EnableMouseInPointer.patch

@@ -0,0 +1,98 @@
+diff -ruN wine_11.0-rc2_staging/dlls/win32u/input.c wine_11.0-rc2_staging_MouseInPointer/dlls/win32u/input.c
+--- wine_11.0-rc2_staging/dlls/win32u/input.c	2025-12-29 13:41:41.975181837 +0000
++++ wine_11.0-rc2_staging_MouseInPointer/dlls/win32u/input.c	2025-12-29 13:24:25.348886963 +0000
+@@ -2594,9 +2594,14 @@
+  */
+ BOOL WINAPI NtUserEnableMouseInPointer( BOOL enable )
+ {
+-    FIXME( "enable %u stub!\n", enable );
+-    RtlSetLastWin32Error( ERROR_CALL_NOT_IMPLEMENTED );
+-    return FALSE;
++    struct ntuser_thread_info *thread_info = NtUserGetThreadInfo();
++
++    if ( enable == TRUE )
++        thread_info->mouse_in_pointer = TRUE;
++    else
++        thread_info->mouse_in_pointer = FALSE;
++  
++    return thread_info->mouse_in_pointer;
+ }
+ 
+ /**********************************************************************
+@@ -2604,9 +2609,7 @@
+  */
+ BOOL WINAPI NtUserEnableMouseInPointerForThread( void )
+ {
+-    FIXME( "stub!\n" );
+-    RtlSetLastWin32Error( ERROR_CALL_NOT_IMPLEMENTED );
+-    return FALSE;
++    return NtUserEnableMouseInPointer(TRUE);
+ }
+ 
+ /**********************************************************************
+@@ -2614,9 +2617,9 @@
+  */
+ BOOL WINAPI NtUserIsMouseInPointerEnabled(void)
+ {
+-    FIXME( "stub!\n" );
+-    RtlSetLastWin32Error( ERROR_CALL_NOT_IMPLEMENTED );
+-    return FALSE;
++    struct ntuser_thread_info *thread_info = NtUserGetThreadInfo();
++
++    return thread_info->mouse_in_pointer;
+ }
+ 
+ static BOOL is_captured_by_system(void)
+diff -ruN wine_11.0-rc2_staging/dlls/win32u/message.c wine_11.0-rc2_staging_MouseInPointer/dlls/win32u/message.c
+--- wine_11.0-rc2_staging/dlls/win32u/message.c	2025-12-29 13:41:40.573798712 +0000
++++ wine_11.0-rc2_staging_MouseInPointer/dlls/win32u/message.c	2025-12-29 13:54:08.510875628 +0000
+@@ -4629,9 +4629,38 @@
+     return put_message_in_queue( &info, NULL );
+ }
+ 
++UINT isMouseButtonPressed = 0;
++
+ LRESULT WINAPI NtUserMessageCall( HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam,
+                                   void *result_info, DWORD type, BOOL ansi )
+ {
++    if ( type == NtUserGetDispatchParams && 
++        (msg == WM_LBUTTONDOWN || msg == WM_LBUTTONUP || msg == WM_MOUSEMOVE) ) {
++            struct ntuser_thread_info *thread_info = NtUserGetThreadInfo();
++
++            if ( thread_info->mouse_in_pointer == TRUE ) {
++                if ( msg == WM_LBUTTONDOWN ) {
++                    wparam = MAKEWPARAM(1, POINTER_MESSAGE_FLAG_PRIMARY | POINTER_MESSAGE_FLAG_FIRSTBUTTON | POINTER_MESSAGE_FLAG_INCONTACT | POINTER_MESSAGE_FLAG_INRANGE);
++                    isMouseButtonPressed = 1;
++                }
++
++                if ( msg == WM_LBUTTONUP ) {
++                    wparam = MAKEWPARAM(1, POINTER_MESSAGE_FLAG_PRIMARY | POINTER_MESSAGE_FLAG_INRANGE);
++                    isMouseButtonPressed = 0;
++                }
++
++                if ( msg == WM_MOUSEMOVE ) {
++                    if ( isMouseButtonPressed ) {
++                        wparam = MAKEWPARAM(1, POINTER_MESSAGE_FLAG_PRIMARY | POINTER_MESSAGE_FLAG_FIRSTBUTTON | POINTER_MESSAGE_FLAG_INCONTACT | POINTER_MESSAGE_FLAG_INRANGE);
++                    } else {
++                        wparam = MAKEWPARAM(1, POINTER_MESSAGE_FLAG_PRIMARY | POINTER_MESSAGE_FLAG_INRANGE);
++                    }
++                }
++
++                msg = WM_POINTERUPDATE;
++            }
++    }
++
+     switch (type)
+     {
+     case NtUserScrollBarWndProc:
+diff -ruN wine_11.0-rc2_staging/include/ntuser.h wine_11.0-rc2_staging_MouseInPointer/include/ntuser.h
+--- wine_11.0-rc2_staging/include/ntuser.h	2025-12-29 13:41:41.963567359 +0000
++++ wine_11.0-rc2_staging_MouseInPointer/include/ntuser.h	2025-12-29 13:24:31.452997883 +0000
+@@ -134,6 +134,7 @@
+     UINT           default_imc;       /* default input context */
+     UINT64         client_imm;        /* client IMM thread info */
+     UINT64         wmchar_data;       /* client data for WM_CHAR mappings */
++    BOOL           mouse_in_pointer;
+ };
+ 
+ static inline struct ntuser_thread_info *NtUserGetThreadInfo(void)