From: Katayama Hirofumi MZ <katayama.hirofumi.mz@gmail.com>
Date: Sat, 16 Nov 2019 00:49:49 +0000 (+0900)
Subject: [NTUSER] Support MK_SHIFT/MK_CONTROL of mouse messages (#2038)
X-Git-Tag: 0.4.14-RC~1227
X-Git-Url: https://git.reactos.org/?p=reactos.git;a=commitdiff_plain;h=462b1b744496f13f1600ef9cd406027cbb134b36

[NTUSER] Support MK_SHIFT/MK_CONTROL of mouse messages (#2038)

Upon mouse message generation, The states of Shift key and/or Ctrl key must be used. If Shift key is pressed, it enables MK_SHIFT flag of the mouse message. If Ctrl key is pressed, it enables MK_CONTROL flag of the mouse message. CORE-16279
---

diff --git a/win32ss/user/ntuser/mouse.c b/win32ss/user/ntuser/mouse.c
index df8d7a6cc70..6d410681592 100644
--- a/win32ss/user/ntuser/mouse.c
+++ b/win32ss/user/ntuser/mouse.c
@@ -227,6 +227,16 @@ UserSendMouseInput(MOUSEINPUT *pmi, BOOL bInjected)
         UserSetCursorPos(ptCursor.x, ptCursor.y, bInjected, pmi->dwExtraInfo, TRUE);
     }
 
+    if (IS_KEY_DOWN(gafAsyncKeyState, VK_SHIFT))
+        pCurInfo->ButtonsDown |= MK_SHIFT;
+    else
+        pCurInfo->ButtonsDown &= ~MK_SHIFT;
+
+    if (IS_KEY_DOWN(gafAsyncKeyState, VK_CONTROL))
+        pCurInfo->ButtonsDown |= MK_CONTROL;
+    else
+        pCurInfo->ButtonsDown &= ~MK_CONTROL;
+
     /* Left button */
     if (dwFlags & MOUSEEVENTF_LEFTDOWN)
     {