From a6ae9f33b511dd1db5ff6f1b7d677a4463fbb524 Mon Sep 17 00:00:00 2001
From: Brian Matzon <brian@matzon.dk>
Date: Tue, 26 May 2009 20:39:23 +0000
Subject: [PATCH] fix windows issue with mouse down true when released outside
 window

---
 platform_build/windows_ant/build.xml          |  2 +-
 src/java/org/lwjgl/opengl/WindowsDisplay.java | 33 +++++++++++++++++--
 src/native/windows/org_lwjgl_opengl_Display.c | 11 +++++++
 3 files changed, 43 insertions(+), 3 deletions(-)

diff --git a/platform_build/windows_ant/build.xml b/platform_build/windows_ant/build.xml
index 7aa3f9f3..83a8f10f 100644
--- a/platform_build/windows_ant/build.xml
+++ b/platform_build/windows_ant/build.xml
@@ -52,7 +52,7 @@
 			<equals arg1="${os.arch}" arg2="x86"/>
 		</condition>
 		<echo message="${sdkhomelib}"/>
-		<property name="libs" value="Kernel32.lib ole32.lib OpenGL32.Lib Version.lib user32.lib Gdi32.lib Advapi32.lib jawt.lib delayimp.lib winmm.lib"/>
+		<property name="libs" value="Kernel32.lib ole32.lib OpenGL32.Lib Version.lib user32.lib Gdi32.lib Advapi32.lib jawt.lib delayimp.lib winmm.lib Comctl32.lib"/>
 		<antcall target="compile_dir"/>
 		<antcall target="link"/>
     </target>
diff --git a/src/java/org/lwjgl/opengl/WindowsDisplay.java b/src/java/org/lwjgl/opengl/WindowsDisplay.java
index ce2b1de7..54dc989c 100644
--- a/src/java/org/lwjgl/opengl/WindowsDisplay.java
+++ b/src/java/org/lwjgl/opengl/WindowsDisplay.java
@@ -62,6 +62,7 @@ final class WindowsDisplay implements DisplayImplementation {
 	private final static int WM_MBUTTONUP                     = 0x0208;
 	private final static int WM_MBUTTONDBLCLK                 = 0x0209;
 	private final static int WM_MOUSEWHEEL                    = 0x020A;
+	private final static int WM_MOUSELEAVE	                  = 0x02A3;
 	private final static int WM_KEYDOWN						  = 256;
 	private final static int WM_KEYUP						  = 257;
 	private final static int WM_SYSKEYUP					  = 261;
@@ -149,6 +150,8 @@ final class WindowsDisplay implements DisplayImplementation {
 	private long small_icon;
 	private long large_icon;
 
+	private boolean trackingMouse = false;
+
 	WindowsDisplay() {
 		current_display = this;
 	}
@@ -669,8 +672,18 @@ final class WindowsDisplay implements DisplayImplementation {
 	}
 
 	private void handleMouseMoved(int x, int y, long millis) {
-		if (mouse != null)
-			mouse.handleMouseMoved(x, y, millis, shouldGrab());
+		if (mouse != null) {
+ 			mouse.handleMouseMoved(x, y, millis, shouldGrab());
+			
+			// if we're not tracking mouse and we get a mouse move event - START TRACKING!
+			if(!trackingMouse && !Mouse.isGrabbed()) {
+				LWJGLUtil.log("initial mouse move - need tracking");
+				
+				if (nTrackMouse(hwnd)) {
+					trackingMouse = true;
+				}
+			}
+		}
 	}
 
 	private void handleMouseScrolled(int amount, long millis) {
@@ -796,6 +809,9 @@ final class WindowsDisplay implements DisplayImplementation {
 			case WM_MBUTTONUP:
 				handleMouseButton(2, 0, millis);
 				return 0;
+			case WM_MOUSELEAVE:
+				handleMouseLeave(millis);
+				return 0;
 			case WM_SYSCHAR:
 			case WM_CHAR:
 				handleChar(wParam, lParam, millis);
@@ -886,4 +902,17 @@ final class WindowsDisplay implements DisplayImplementation {
 			return "Rect: top = " + top + " bottom = " + bottom + " left = " + left + " right = " + right;
 		}
 	}
+
+
+
+	
+	private static native boolean nTrackMouse(long hwnd);
+	
+	private void handleMouseLeave(long millis) {
+		handleMouseButton(0, 0, millis);
+		handleMouseButton(1, 0, millis);
+		handleMouseButton(2, 0, millis);
+		trackingMouse = false;
+	}
+
 }
diff --git a/src/native/windows/org_lwjgl_opengl_Display.c b/src/native/windows/org_lwjgl_opengl_Display.c
index 5df1c194..c8eb57f8 100644
--- a/src/native/windows/org_lwjgl_opengl_Display.c
+++ b/src/native/windows/org_lwjgl_opengl_Display.c
@@ -489,3 +489,14 @@ JNIEXPORT jint JNICALL Java_org_lwjgl_opengl_WindowsDisplay_getSystemMetrics(JNI
 	return GetSystemMetrics(index);
 }
 
+JNIEXPORT jboolean JNICALL Java_org_lwjgl_opengl_WindowsDisplay_nTrackMouse(JNIEnv *env, jclass unused, jlong hwnd_int) {
+	HWND hwnd = (HWND)(INT_PTR)hwnd_int;
+
+	TRACKMOUSEEVENT tme;
+	tme.cbSize		= sizeof(TRACKMOUSEEVENT);
+	tme.dwFlags		= TME_LEAVE;
+	tme.hwndTrack	= hwnd;
+
+	return _TrackMouseEvent(&tme);
+}
+