From a93c04e23eda5051bf2665f0bea531fc379aa4f1 Mon Sep 17 00:00:00 2001
From: Toni Spets <toni.spets@iki.fi>
Date: Sun, 11 Sep 2011 16:10:43 +0300
Subject: [PATCH] Fix cursor offset on unlock in windowed

---
 mouse.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/mouse.c b/mouse.c
index d950437..64f1d49 100644
--- a/mouse.c
+++ b/mouse.c
@@ -202,6 +202,9 @@ void mouse_lock()
 
 void mouse_unlock()
 {
+    RECT rc;
+    POINT pt;
+
     if(!mouse_active)
     {
         return;
@@ -210,8 +213,15 @@ void mouse_unlock()
     if(ddraw->locked)
     {
         ddraw->locked = FALSE;
-        SetCursorPos(ddraw->cursor.x * ddraw->render.width / ddraw->width , ddraw->cursor.y * ddraw->render.height / ddraw->height);
 
+        GetWindowRect(ddraw->hWnd, &rc);
+
+        pt.x = (rc.right - rc.left - ddraw->render.width) / 2;
+        pt.y = (rc.bottom - rc.top - ddraw->render.height - pt.x);
+        rc.left += pt.x;
+        rc.top += pt.y;
+
+        SetCursorPos(rc.left + (ddraw->cursor.x * ddraw->render.width / ddraw->width), rc.top + (ddraw->cursor.y * ddraw->render.height / ddraw->height));
         while(ShowCursor(TRUE) < 0);
         SetCursor(LoadCursor(NULL, IDC_ARROW));