From 94446ab4889e7b2601f44d2be8ca178c7593f54d Mon Sep 17 00:00:00 2001
From: sonninnos <tony@pihaus.org>
Date: Mon, 1 Feb 2021 23:22:34 +0200
Subject: [PATCH 1/2] (WINRAW) Prevent outside window mouse clicks when grabbed

---
 input/drivers/winraw_input.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/input/drivers/winraw_input.c b/input/drivers/winraw_input.c
index 834d0775a7..15be0fb777 100644
--- a/input/drivers/winraw_input.c
+++ b/input/drivers/winraw_input.c
@@ -225,7 +225,7 @@ static BOOL winraw_set_mouse_input(HWND window, bool grab)
    RAWINPUTDEVICE rid;
 
    if (window)
-      rid.dwFlags  = grab ? RIDEV_CAPTUREMOUSE : 0;
+      rid.dwFlags  = grab ? RIDEV_CAPTUREMOUSE | RIDEV_NOLEGACY : 0;
    else
       rid.dwFlags  = RIDEV_REMOVE;
 

From e39ade0f059f0560bc433c4001a534421226188e Mon Sep 17 00:00:00 2001
From: sonninnos <tony@pihaus.org>
Date: Tue, 2 Feb 2021 00:52:03 +0200
Subject: [PATCH 2/2] (WIN32) Cursor clipping for grabbed mouse

---
 gfx/common/win32_common.c    | 30 ++++++++++++++++++++++++++++++
 gfx/common/win32_common.h    |  2 ++
 input/drivers/dinput.c       |  4 ++++
 input/drivers/winraw_input.c | 16 ++++++++++++----
 4 files changed, 48 insertions(+), 4 deletions(-)

diff --git a/gfx/common/win32_common.c b/gfx/common/win32_common.c
index 74b0a8375c..ff1994fac3 100644
--- a/gfx/common/win32_common.c
+++ b/gfx/common/win32_common.c
@@ -1018,6 +1018,9 @@ static LRESULT CALLBACK wnd_proc_common_internal(HWND hwnd,
             taskbar_is_created = true;
 #endif
          break;
+      case WM_SETFOCUS:
+         win32_clip_window(input_mouse_grabbed());
+         break;
    }
 
    return DefWindowProc(hwnd, message, wparam, lparam);
@@ -1124,6 +1127,9 @@ static LRESULT CALLBACK wnd_proc_common_dinput_internal(HWND hwnd,
             taskbar_is_created = true;
 #endif
          break;
+      case WM_SETFOCUS:
+         win32_clip_window(input_mouse_grabbed());
+         break;
    }
 
    return DefWindowProc(hwnd, message, wparam, lparam);
@@ -1531,6 +1537,30 @@ void win32_check_window(void *data,
 #endif
 }
 
+void win32_clip_window(bool state)
+{
+#if !defined(_XBOX)
+   RECT clip_rect;
+
+   if (state && main_window.hwnd)
+   {
+      PWINDOWINFO info;
+      info = malloc(sizeof(*info));
+      info->cbSize = sizeof(PWINDOWINFO);
+
+      if (GetWindowInfo(main_window.hwnd, info))
+         clip_rect = info->rcClient;
+
+      free(info);
+      info = NULL;
+   }
+   else
+      GetWindowRect(GetDesktopWindow(), &clip_rect);
+
+   ClipCursor(&clip_rect);
+#endif
+}
+
 bool win32_suppress_screensaver(void *data, bool enable)
 {
 #if !defined(_XBOX)
diff --git a/gfx/common/win32_common.h b/gfx/common/win32_common.h
index e018e4d4b2..e2944ee5e7 100644
--- a/gfx/common/win32_common.h
+++ b/gfx/common/win32_common.h
@@ -98,6 +98,8 @@ HWND win32_get_window(void);
 
 bool win32_has_focus(void *data);
 
+void win32_clip_window(bool grab);
+
 void win32_check_window(void *data,
       bool *quit,
       bool *resize, unsigned *width, unsigned *height);
diff --git a/input/drivers/dinput.c b/input/drivers/dinput.c
index 8b9d51b81f..9eeaeb2c70 100644
--- a/input/drivers/dinput.c
+++ b/input/drivers/dinput.c
@@ -1007,6 +1007,10 @@ static void dinput_grab_mouse(void *data, bool state)
       (DISCL_EXCLUSIVE    | DISCL_FOREGROUND) :
       (DISCL_NONEXCLUSIVE | DISCL_FOREGROUND));
    IDirectInputDevice8_Acquire(di->mouse);
+
+#ifndef _XBOX
+   win32_clip_window(state);
+#endif
 }
 
 static uint64_t dinput_get_capabilities(void *data)
diff --git a/input/drivers/winraw_input.c b/input/drivers/winraw_input.c
index 15be0fb777..5e9f762cc6 100644
--- a/input/drivers/winraw_input.c
+++ b/input/drivers/winraw_input.c
@@ -25,6 +25,10 @@ extern "C" {
 }
 #endif
 
+#ifndef _XBOX
+#include "../../gfx/common/win32_common.h"
+#endif
+
 #include "../input_keymaps.h"
 
 #include "../../configuration.h"
@@ -874,17 +878,21 @@ static uint64_t winraw_get_capabilities(void *u)
           (1 << RETRO_DEVICE_LIGHTGUN);
 }
 
-static void winraw_grab_mouse(void *d, bool grab)
+static void winraw_grab_mouse(void *d, bool state)
 {
    winraw_input_t *wr = (winraw_input_t*)d;
 
-   if (grab == wr->mouse_grab)
+   if (state == wr->mouse_grab)
       return;
 
-   if (!winraw_set_mouse_input(wr->window, grab))
+   if (!winraw_set_mouse_input(wr->window, state))
       return;
 
-   wr->mouse_grab = grab;
+   wr->mouse_grab = state;
+
+#ifndef _XBOX
+   win32_clip_window(state);
+#endif
 }
 
 input_driver_t input_winraw = {