diff --git a/src/win32/win32gliface.cpp b/src/win32/win32gliface.cpp
index 1223da838..48de9e8e0 100644
--- a/src/win32/win32gliface.cpp
+++ b/src/win32/win32gliface.cpp
@@ -26,6 +26,9 @@
 #include "gl/renderer/gl_renderer.h"
 #include "gl/system/gl_framebuffer.h"
 
+extern HWND			Window;
+extern BOOL AppActive;
+
 extern "C" {
     _declspec(dllexport) DWORD NvOptimusEnablement = 0x00000001;
     __declspec(dllexport) int AmdPowerXpressRequestHighPerformance = 1;	
@@ -50,6 +53,77 @@ CUSTOM_CVAR(Bool, gl_debug, false, CVAR_ARCHIVE | CVAR_GLOBALCONFIG | CVAR_NOINI
 EXTERN_CVAR(Bool, vr_enable_quadbuffered)
 EXTERN_CVAR(Int, vid_refreshrate)
 
+
+//==========================================================================
+//
+// 
+//
+//==========================================================================
+
+class Win32GLVideo : public IVideo
+{
+public:
+	Win32GLVideo(int parm);
+	virtual ~Win32GLVideo();
+
+	EDisplayType GetDisplayType() { return DISPLAY_Both; }
+	void SetWindowedScale(float scale);
+	void StartModeIterator(int bits, bool fs);
+	bool NextMode(int *width, int *height, bool *letterbox);
+	bool GoFullscreen(bool yes);
+	DFrameBuffer *CreateFrameBuffer(int width, int height, bool fs, DFrameBuffer *old);
+	virtual bool SetResolution(int width, int height, int bits);
+	void DumpAdapters();
+	bool InitHardware(HWND Window, int multisample);
+	void Shutdown();
+	bool SetFullscreen(const char *devicename, int w, int h, int bits, int hz);
+
+	HDC m_hDC;
+
+protected:
+	struct ModeInfo
+	{
+		ModeInfo(int inX, int inY, int inBits, int inRealY, int inRefresh)
+			: next(NULL),
+			width(inX),
+			height(inY),
+			bits(inBits),
+			refreshHz(inRefresh),
+			realheight(inRealY)
+		{}
+		ModeInfo *next;
+		int width, height, bits, refreshHz, realheight;
+	} *m_Modes;
+
+	ModeInfo *m_IteratorMode;
+	int m_IteratorBits;
+	bool m_IteratorFS;
+	bool m_IsFullscreen;
+	int m_trueHeight;
+	int m_DisplayWidth, m_DisplayHeight, m_DisplayBits, m_DisplayHz;
+	HMODULE hmRender;
+
+	char m_DisplayDeviceBuffer[CCHDEVICENAME];
+	char *m_DisplayDeviceName;
+	HMONITOR m_hMonitor;
+
+	HWND m_Window;
+	HGLRC m_hRC;
+
+	HWND InitDummy();
+	void ShutdownDummy(HWND dummy);
+	bool SetPixelFormat();
+	bool SetupPixelFormat(int multisample);
+
+	void GetDisplayDeviceName();
+	void MakeModesList();
+	void AddMode(int x, int y, int bits, int baseHeight, int refreshHz);
+	void FreeModes();
+public:
+	int GetTrueHeight() { return m_trueHeight; }
+
+};
+
 //==========================================================================
 //
 // 
@@ -1161,6 +1235,11 @@ int Win32GLFrameBuffer::GetClientHeight()
 	return rect.bottom - rect.top;
 }
 
+int Win32GLFrameBuffer::GetTrueHeight() 
+{ 
+	return static_cast<Win32GLVideo *>(Video)->GetTrueHeight(); 
+}
+
 IVideo *gl_CreateVideo()
 {
 	return new Win32GLVideo(0);
diff --git a/src/win32/win32gliface.h b/src/win32/win32gliface.h
index b5855668c..463220a99 100644
--- a/src/win32/win32gliface.h
+++ b/src/win32/win32gliface.h
@@ -27,71 +27,6 @@ struct FRenderer;
 FRenderer *gl_CreateInterface();
 
 
-class Win32GLVideo : public IVideo
-{
-public:
-	Win32GLVideo(int parm);
-	virtual ~Win32GLVideo();
-
-	EDisplayType GetDisplayType () { return DISPLAY_Both; }
-	void SetWindowedScale (float scale);
-	void StartModeIterator (int bits, bool fs);
-	bool NextMode (int *width, int *height, bool *letterbox);
-	bool GoFullscreen(bool yes);
-	DFrameBuffer *CreateFrameBuffer (int width, int height, bool fs, DFrameBuffer *old);
-	virtual bool SetResolution (int width, int height, int bits);
-	void DumpAdapters();
-	bool InitHardware (HWND Window, int multisample);
-	void Shutdown();
-	bool SetFullscreen(const char *devicename, int w, int h, int bits, int hz);
-
-	HDC m_hDC;
-
-protected:
-	struct ModeInfo
-	{
-		ModeInfo (int inX, int inY, int inBits, int inRealY, int inRefresh)
-			: next (NULL),
-			width (inX),
-			height (inY),
-			bits (inBits),
-			refreshHz (inRefresh),
-			realheight (inRealY)
-		{}
-		ModeInfo *next;
-		int width, height, bits, refreshHz, realheight;
-	} *m_Modes;
-
-	ModeInfo *m_IteratorMode;
-	int m_IteratorBits;
-	bool m_IteratorFS;
-	bool m_IsFullscreen;
-	int m_trueHeight;
-	int m_DisplayWidth, m_DisplayHeight, m_DisplayBits, m_DisplayHz;
-	HMODULE hmRender;
-
-	char m_DisplayDeviceBuffer[CCHDEVICENAME];
-	char *m_DisplayDeviceName;
-	HMONITOR m_hMonitor;
-
-	HWND m_Window;
-	HGLRC m_hRC;
-
-	HWND InitDummy();
-	void ShutdownDummy(HWND dummy);
-	bool SetPixelFormat();
-	bool SetupPixelFormat(int multisample);
-
-	void GetDisplayDeviceName();
-	void MakeModesList();
-	void AddMode(int x, int y, int bits, int baseHeight, int refreshHz);
-	void FreeModes();
-public:
-	int GetTrueHeight() { return m_trueHeight; }
-
-};
-
-
 
 class Win32GLFrameBuffer : public BaseWinFB
 {
@@ -120,7 +55,7 @@ public:
 	int GetClientWidth();
 	int GetClientHeight();
 
-	int GetTrueHeight() { return static_cast<Win32GLVideo *>(Video)->GetTrueHeight(); }
+	int GetTrueHeight();
 
 	bool Lock(bool buffered);
 	bool Lock ();