From 30aac19f272c2765f6f851f1099b8c932e45bbc3 Mon Sep 17 00:00:00 2001
From: Thomas Bernard <miniupnp@free.fr>
Date: Fri, 22 Jun 2018 02:17:29 +0200
Subject: [PATCH] implement Get_Key_modifiers for Win32

---
 src/keyboard.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/keyboard.c b/src/keyboard.c
index c0781138..c5dcb74c 100644
--- a/src/keyboard.c
+++ b/src/keyboard.c
@@ -809,6 +809,13 @@ word Key_for_scancode(word scancode)
 }
 word Get_Key_modifiers(void)
 {
-  return 0;
+  word mod = 0;
+  if (GetKeyState(VK_SHIFT) & 0x8000)
+    mod |= MOD_SHIFT;
+  if (GetKeyState(VK_CONTROL) & 0x8000)
+    mod |= MOD_CTRL;
+  if (GetKeyState(VK_MENU) & 0x8000)
+    mod |= MOD_ALT;
+  return mod;
 }
 #endif