Window not changing

#include <windows.h>
#include "c_D3D_settings.h"
#include "macros.h"

#define FSCREEN_HEIGTH 768
#define FSCREEN_WIDTH 1024

LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);

D3D_Settings::D3D_Settings( void )
{
	szClassName = "J-Fps";
	Vertex[0] = CUSTOMVERTEX( 150.0f,  50.0f, 0.5f, 1.0f, 0xffff0000 );
}

void D3D_Settings::Intilize( void )
{
	wincl.hInstance = hThisInstance;
    wincl.lpszClassName = (LPCWSTR)szClassName.c_str();
    wincl.lpfnWndProc = WindowProcedure;
    wincl.style = CS_DBLCLKS;                 
    wincl.cbSize = sizeof(WNDCLASSEX);
	wincl.hIcon = LoadIcon(NULL, IDI_APPLICATION);
    wincl.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
    wincl.hCursor = LoadCursor(NULL, IDC_ARROW);
    wincl.lpszMenuName = NULL;                 
    wincl.cbClsExtra = 0;                      
    wincl.cbWndExtra = 0;                      
    wincl.hbrBackground = (HBRUSH)COLOR_BACKGROUND;
	RegisterClassEx (&wincl);
	
	return;
}

void D3D_Settings::SetupWindow( void )
{
	if( Fullscreen == true)
	{
	InFullScreen = true;
	hwnd = CreateWindowEx (
           0,                   
           (LPCWSTR)szClassName.c_str(),         
           (LPCWSTR)L"J-Fps",      
           WS_EX_TOPMOST | WS_POPUP, 
           0,      
           0,       
           FSCREEN_WIDTH,              
           FSCREEN_HEIGTH,                 
           HWND_DESKTOP,       
           NULL,              
           hThisInstance,       
           NULL                 
           );
	}
	else
	{
		InFullScreen = false;
		hwnd = CreateWindowEx (
			0,                   
           (LPCWSTR)szClassName.c_str(),         
           (LPCWSTR)L"J-Fps",      
           WS_OVERLAPPEDWINDOW, 
           CW_USEDEFAULT,      
           CW_USEDEFAULT,       
           700,              
           700,                 
           HWND_DESKTOP,       
           NULL,              
           hThisInstance,       
           NULL                 
           );
	}
	
	ShowWindow (hwnd, nFunsterStil);

	return;
}

MSG D3D_Settings::RtrnMessage( void ) const
{
	return messages;
}

void D3D_Settings::SetThisInstance( HINSTANCE value )
{
	hThisInstance = value;
}
			
void D3D_Settings::SetPrevInstance( HINSTANCE value )
{
	hPrevInstance = value;
}

void D3D_Settings::SetPszArgument( LPSTR value )
{
	lpszArgument = value;
}

void D3D_Settings::SetFunsterStil( int value )
{
	nFunsterStil = value;
}

void D3D_Settings::SetupD3D( void )
{
	d3d = Direct3DCreate9(D3D_SDK_VERSION);
	
	ZeroMemory(&d3dpp, sizeof(d3dpp));
	
	if(Fullscreen == true)
	{
		d3dpp.Windowed = false;
		d3dpp.BackBufferFormat = D3DFMT_X8R8G8B8;
		d3dpp.BackBufferWidth = FSCREEN_WIDTH;   
		d3dpp.BackBufferHeight = FSCREEN_HEIGTH;   
	}
	else
	{
		d3dpp.Windowed = true;
	}
	d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
	d3dpp.hDeviceWindow = hwnd; 
	
	d3d->CreateDevice(D3DADAPTER_DEFAULT,
                      D3DDEVTYPE_HAL,
                      hwnd,
                      D3DCREATE_SOFTWARE_VERTEXPROCESSING,
                      &d3dpp,
                      &d3ddev);
	return;
}

void D3D_Settings::Render( void )
{
	d3ddev->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0, 40, 100), 1.0f, 0);
	d3ddev->BeginScene();    

    

    d3ddev->EndScene();    
	d3ddev->Present(NULL, NULL, NULL, NULL);    

    return;
}

void D3D_Settings::Start( void )
{
	if(MessageBox(NULL,(LPCWSTR)L"Would you like to go fullscreen?",(LPCWSTR)L"Fullscreen?", MB_YESNO | MB_ICONQUESTION) == IDYES)
	{
		Fullscreen = true;
	}
	else
	{
		Fullscreen = false;
	}
}

void D3D_Settings::CleanUp( void )
{
	d3ddev->Clear(0, NULL, D3DCLEAR_TARGET, NULL, NULL, NULL);
	d3ddev->Release();
	d3d->Release();
}

MSG *D3D_Settings::GetMessage( void ) 
{
	return &messages
}

HWND *D3D_Settings::GetWindow( void )
{
	return &hwnd
}

void D3D_Settings::HandleInput( void )
{
	if(KEY_DOWN(VK_F2))
	{
		SwitchGraphicsModes();
	}
}

void D3D_Settings::SwitchGraphicsModes( void )
{
	if(InFullScreen)
	{
		hwnd = CreateWindowEx (
			0,                   
           (LPCWSTR)szClassName.c_str(),         
           (LPCWSTR)L"J-Fps",      
           WS_OVERLAPPEDWINDOW | WS_EX_TOPMOST | WS_THICKFRAME, 
           1000,      
           1000,       
           700,              
           700,                 
           HWND_DESKTOP,       
           NULL,              
           hThisInstance,       
           NULL                 
           );


		d3dpp.Windowed = true;


		InFullScreen = false;

	}

	else if(!InFullScreen)
	{
		d3dpp.Windowed = false;
		
		d3dpp.BackBufferFormat = D3DFMT_X8R8G8B8;
		d3dpp.BackBufferWidth = FSCREEN_WIDTH;   
		d3dpp.BackBufferHeight = FSCREEN_HEIGTH;
		
		InFullScreen = true;
		
		hwnd = CreateWindowEx (
           0,                   
           (LPCWSTR)szClassName.c_str(),         
           (LPCWSTR)L"Windows App",   
           WS_EX_TOPMOST | WS_POPUP, 
           0,      
           0,       
           FSCREEN_WIDTH,              
           FSCREEN_HEIGTH,                 
           HWND_DESKTOP,       
           NULL,              
           hThisInstance,       

           NULL                 
           );
	}

	d3ddev->Reset(&d3dpp);
}