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diff --git a/indra/llwindow/llwindowwin32.h b/indra/llwindow/llwindowwin32.h
new file mode 100644
index 0000000000..6803ad6f2a
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+++ b/indra/llwindow/llwindowwin32.h
@@ -0,0 +1,187 @@
+/** 
+ * @file llwindowwin32.h
+ * @brief Windows implementation of LLWindow class
+ *
+ * Copyright (c) 2001-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+#ifndef LL_LLWINDOWWIN32_H
+#define LL_LLWINDOWWIN32_H
+
+#include "llwindow.h"
+
+// Hack for async host by name
+#define LL_WM_HOST_RESOLVED      (WM_APP + 1)
+typedef void (*LLW32MsgCallback)(const MSG &msg);
+
+class LLWindowWin32 : public LLWindow
+{
+public:
+	/*virtual*/ void show();
+	/*virtual*/ void hide();
+	/*virtual*/ void close();
+	/*virtual*/ BOOL getVisible();
+	/*virtual*/ BOOL getMinimized();
+	/*virtual*/ BOOL getMaximized();
+	/*virtual*/ BOOL maximize();
+	/*virtual*/ BOOL getFullscreen();
+	/*virtual*/ BOOL getPosition(LLCoordScreen *position);
+	/*virtual*/ BOOL getSize(LLCoordScreen *size);
+	/*virtual*/ BOOL getSize(LLCoordWindow *size);
+	/*virtual*/ BOOL setPosition(LLCoordScreen position);
+	/*virtual*/ BOOL setSize(LLCoordScreen size);
+	/*virtual*/ BOOL switchContext(BOOL fullscreen, LLCoordScreen size, BOOL disable_vsync);
+	/*virtual*/ BOOL setCursorPosition(LLCoordWindow position);
+	/*virtual*/ BOOL getCursorPosition(LLCoordWindow *position);
+	/*virtual*/ void showCursor();
+	/*virtual*/ void hideCursor();
+	/*virtual*/ void showCursorFromMouseMove();
+	/*virtual*/ void hideCursorUntilMouseMove();
+	/*virtual*/ BOOL isCursorHidden();
+	/*virtual*/ void setCursor(ECursorType cursor);
+	/*virtual*/ ECursorType getCursor();
+	/*virtual*/ void captureMouse();
+	/*virtual*/ void releaseMouse();
+	/*virtual*/ void setMouseClipping( BOOL b );
+	/*virtual*/ BOOL isClipboardTextAvailable();
+	/*virtual*/ BOOL pasteTextFromClipboard(LLWString &dst);
+	/*virtual*/ BOOL copyTextToClipboard(const LLWString &src);
+	/*virtual*/ void flashIcon(F32 seconds);
+	/*virtual*/ F32 getGamma();
+	/*virtual*/ BOOL setGamma(const F32 gamma); // Set the gamma
+	/*virtual*/ BOOL restoreGamma();			// Restore original gamma table (before updating gamma)
+	/*virtual*/ ESwapMethod getSwapMethod() { return mSwapMethod; }
+	/*virtual*/ void gatherInput();
+	/*virtual*/ void delayInputProcessing();
+	/*virtual*/ void swapBuffers();
+
+	/*virtual*/ LLString getTempFileName();
+	/*virtual*/ void deleteFile( const char* file_name );
+	/*virtual*/ S32 stat( const char* file_name, struct stat* stat_info );
+	/*virtual*/ BOOL sendEmail(const char* address,const char* subject,const char* body_text,const char* attachment=NULL, const char* attachment_displayed_name=NULL);
+
+
+	// handy coordinate space conversion routines
+	/*virtual*/ BOOL convertCoords(LLCoordScreen from, LLCoordWindow *to);
+	/*virtual*/ BOOL convertCoords(LLCoordWindow from, LLCoordScreen *to);
+	/*virtual*/ BOOL convertCoords(LLCoordWindow from, LLCoordGL *to);
+	/*virtual*/ BOOL convertCoords(LLCoordGL from, LLCoordWindow *to);
+	/*virtual*/ BOOL convertCoords(LLCoordScreen from, LLCoordGL *to);
+	/*virtual*/ BOOL convertCoords(LLCoordGL from, LLCoordScreen *to);
+
+	/*virtual*/ LLWindowResolution* getSupportedResolutions(S32 &num_resolutions);
+	/*virtual*/ F32	getNativeAspectRatio();
+	/*virtual*/ F32 getPixelAspectRatio();
+	/*virtual*/ void setNativeAspectRatio(F32 ratio) { mOverrideAspectRatio = ratio; }
+
+	/*virtual*/	BOOL dialog_color_picker (F32 *r, F32 *g, F32 *b );
+
+	/*virtual*/ void *getPlatformWindow();
+	/*virtual*/ void bringToFront();
+	/*virtual*/ void focusClient();
+
+protected:
+	LLWindowWin32(
+		char *title, char *name, int x, int y, int width, int height, U32 flags, 
+		BOOL fullscreen, BOOL clearBg, BOOL disable_vsync, BOOL use_gl,
+		BOOL ignore_pixel_depth);
+	~LLWindowWin32();
+
+	void	initCursors();
+	HCURSOR loadColorCursor(LPCTSTR name);
+	BOOL	isValid();
+	void	moveWindow(const LLCoordScreen& position,const LLCoordScreen& size);
+
+
+	// Changes display resolution. Returns true if successful
+	BOOL	setDisplayResolution(S32 width, S32 height, S32 bits, S32 refresh);
+
+	// Go back to last fullscreen display resolution.
+	BOOL	setFullscreenResolution();
+
+	// Restore the display resolution to its value before we ran the app.
+	BOOL	resetDisplayResolution();
+
+	void	minimize();
+	void	restore();
+
+	BOOL	shouldPostQuit() { return mPostQuit; }
+
+
+protected:
+	//
+	// Platform specific methods
+	//
+
+	BOOL	getClientRectInScreenSpace(RECT* rectp);
+	void 	updateJoystick( );
+
+	static LRESULT CALLBACK mainWindowProc(HWND h_wnd, UINT u_msg, WPARAM w_param, LPARAM l_param);
+	static BOOL CALLBACK enumChildWindows(HWND h_wnd, LPARAM l_param);
+
+
+	//
+	// Platform specific variables
+	//
+	WCHAR		*mWindowTitle;
+	WCHAR		*mWindowClassName;
+
+	HWND		mWindowHandle;	// window handle
+	HGLRC		mhRC;			// OpenGL rendering context
+	HDC			mhDC;			// Windows Device context handle
+	HINSTANCE	mhInstance;		// handle to application instance
+	WNDPROC		mWndProc;		// user-installable window proc
+	RECT		mOldMouseClip;  // Screen rect to which the mouse cursor was globally constrained before we changed it in clipMouse()
+	WPARAM		mLastSizeWParam;
+	F32			mOverrideAspectRatio;
+	F32			mNativeAspectRatio;
+
+	HCURSOR		mCursor[ UI_CURSOR_COUNT ];  // Array of all mouse cursors
+
+	static BOOL sIsClassRegistered; // has the window class been registered?
+
+	F32			mCurrentGamma;
+	WORD		mPrevGammaRamp[256*3];
+	WORD		mCurrentGammaRamp[256*3];
+
+	U32			mJoyStickState;
+	U32			mJoyButtonState;
+
+	LPWSTR		mIconResource;
+	BOOL		mMousePositionModified;
+	BOOL		mInputProcessingPaused;
+
+	friend HWND llwindow_get_hwnd(LLWindow *window); 
+	friend void llwindow_install_wndproc(LLWindow *window, WNDPROC wnd_proc);
+	friend class LLWindowManager;
+};
+
+class LLSplashScreenWin32 : public LLSplashScreen
+{
+public:
+	LLSplashScreenWin32();
+	virtual ~LLSplashScreenWin32();
+
+	/*virtual*/ void showImpl();
+	/*virtual*/ void updateImpl(const char* mesg);
+	/*virtual*/ void hideImpl();
+
+#if LL_WINDOWS
+	static LRESULT CALLBACK windowProc(HWND h_wnd, UINT u_msg, 
+		WPARAM w_param, LPARAM l_param);
+#endif
+
+private:
+#if LL_WINDOWS
+	HWND mWindow;
+#endif
+};
+
+extern LLW32MsgCallback gAsyncMsgCallback;
+
+static void	handleMessage( const MSG& msg );
+
+S32 OSMessageBoxWin32(const char* text, const char* caption, U32 type);
+
+#endif //LL_LLWINDOWWIN32_H