From f7fa3c8dbb4fc889574a93a5547a528f89b5311c Mon Sep 17 00:00:00 2001
From: Randy Heit <rheit@zdoom.fake>
Date: Fri, 19 Nov 2010 04:20:33 +0000
Subject: [PATCH] - Add a SetCursor() call to I_SetCursor() when the pointer is
 within the window's client area to   make the pointer change instant instead
 of waiting until the next mouse event.

SVN r3010 (trunk)
---
 src/r_defs.h           |  2 +-
 src/win32/i_mouse.cpp  |  2 +-
 src/win32/i_system.cpp | 18 ++++++++++++++++++
 3 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/src/r_defs.h b/src/r_defs.h
index 07a716d97..22745f54c 100644
--- a/src/r_defs.h
+++ b/src/r_defs.h
@@ -1049,7 +1049,7 @@ struct vissprite_t
 {
 	short			x1, x2;
 	fixed_t			cx;				// for line side calculation
-	fixed_t			gx, gy;			// for fake floor clipping
+	fixed_t			gx, gy;			// for drawseg and fake floor clipping
 	fixed_t			gz, gzt;		// global bottom / top for silhouette clipping
 	fixed_t			startfrac;		// horizontal position of x1
 	fixed_t			xscale, yscale;
diff --git a/src/win32/i_mouse.cpp b/src/win32/i_mouse.cpp
index 873b9271a..4ed347234 100644
--- a/src/win32/i_mouse.cpp
+++ b/src/win32/i_mouse.cpp
@@ -118,7 +118,6 @@ extern int BlockMouseMove;
 
 // PRIVATE DATA DEFINITIONS ------------------------------------------------
 
-static bool NativeMouse;
 static EMouseMode MouseMode = MM_None;
 static FMouse *(*MouseFactory[])() =
 {
@@ -130,6 +129,7 @@ static FMouse *(*MouseFactory[])() =
 // PUBLIC DATA DEFINITIONS -------------------------------------------------
 
 FMouse *Mouse;
+bool NativeMouse;
 
 bool CursorState;
 
diff --git a/src/win32/i_system.cpp b/src/win32/i_system.cpp
index b585be71a..1da4855cc 100644
--- a/src/win32/i_system.cpp
+++ b/src/win32/i_system.cpp
@@ -131,6 +131,7 @@ extern HANDLE StdOut;
 extern bool FancyStdOut;
 extern HINSTANCE g_hInst;
 extern FILE *Logfile;
+extern bool NativeMouse;
 
 // PUBLIC DATA DEFINITIONS -------------------------------------------------
 
@@ -1214,6 +1215,23 @@ bool I_SetCursor(FTexture *cursorpic)
 		cursor = LoadCursor(NULL, IDC_ARROW);
 	}
 	SetClassLongPtr(Window, GCLP_HCURSOR, (LONG_PTR)cursor);
+	if (NativeMouse)
+	{
+		POINT pt;
+		RECT client;
+
+		// If the mouse pointer is within the window's client rect, set it now.
+		if (GetCursorPos(&pt) && GetClientRect(Window, &client) &&
+			ClientToScreen(Window, (LPPOINT)&client.left) &&
+			ClientToScreen(Window, (LPPOINT)&client.right))
+		{
+			if (pt.x >= client.left && pt.x < client.right &&
+				pt.y >= client.top && pt.y < client.bottom)
+			{
+				SetCursor(cursor);
+			}
+		}
+	}
 	return true;
 }