SDL: Differentiate between Windows Ink (pen) and regular touch input

SDL Commits
1 
From 42796c56a95e8db3ad0e8257e3015211c6df6c36 Mon Sep 17 00:00:00 2001
From: Susko3 <[EMAIL REDACTED]>
Date: Sun, 17 Jul 2022 16:01:03 +0200
Subject: [PATCH] Differentiate between Windows Ink (pen) and regular touch
 input

---
 src/video/windows/SDL_windowsevents.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/video/windows/SDL_windowsevents.c b/src/video/windows/SDL_windowsevents.c
index 7370f9e5ca8c..9691b7aa21fe 100644
--- a/src/video/windows/SDL_windowsevents.c
+++ b/src/video/windows/SDL_windowsevents.c
@@ -1339,7 +1339,7 @@ WIN_WindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
                     /* TODO: Can we use GetRawInputDeviceInfo and HID info to
                        determine if this is a direct or indirect touch device?
                      */
-                    if (SDL_AddTouch(touchId, SDL_TOUCH_DEVICE_DIRECT, "") < 0) {
+                    if (SDL_AddTouch(touchId, SDL_TOUCH_DEVICE_DIRECT, (input->dwFlags & TOUCHEVENTF_PEN) == TOUCHEVENTF_PEN ? "pen" : "touch") < 0) {
                         continue;
                     }