error LNK2001

#define WIN32_LEAN_AND_MEAN
#define NOMINMAX
#include <windows.h>
#include <Shellapi.h>
#include <d3dx9.h>
 
#undef MessageBox
#include <iostream>
#include <sstream>
#include <memory>
#pragma comment(lib, "d3d9.lib")
#pragma comment(lib, "d3dx9.lib")
#pragma  comment(lib,"oshgui.lib")
//---------------------------------------------------------------------------
#include "OSHGui.hpp"
#include "DrawingDirect3D9RendererDX9.hpp"
#include "InputWindowsMessage.hpp"
//#include "DrawingDirect3D9RendererDX9.cpp"
//---------------------------------------------------------------------------
using namespace OSHGui;
//---------------------------------------------------------------------------
LPDIRECT3D9 pD3D = nullptr;
LPDIRECT3DDEVICE9 pDevice = nullptr;
D3DPRESENT_PARAMETERS pp;
Input::WindowsMessage input;
class MainForm : public Form
{
private:
	LinkLabel *linkLabel;
	void InitializeComponent()
	{
		this->SetText("OldSchoolHack GUI by KN4CK3R");
		this->SetSize(Drawing::Size(218, 289));
		linkLabel = new LinkLabel();
		linkLabel->SetName("linkLabel");
		linkLabel->SetLocation(Drawing::Point(3, 9));
		linkLabel->SetText("visit www.oldschoolhack.me);
		linkLabel->GetClickEvent() += ClickEventHandler(std::bind(&MainForm::linkLabel_Click, this, std::placeholders::_1));
		this->AddControl(linkLabel);
	}
public:
	MainForm() : Form()
	{
		InitializeComponent();
	}
	void linkLabel_Click(Control *control)
	{
		ShellExecute(0, "open", "www.oldschoolhack.de", NULL, NULL, SW_SHOWNORMAL);
	}
};
//---------------------------------------------------------------------------
HRESULT D3DInit(HWND hwnd)
{
	srand(GetTickCount());
	if (!(pD3D = Direct3DCreate9(D3D_SDK_VERSION)))
	{
		return E_FAIL;
	}
	RECT ClientRect;
	GetClientRect(hwnd, &ClientRect);
	ZeroMemory(&pp, sizeof(pp));
	pp.SwapEffect = D3DSWAPEFFECT_DISCARD;
	pp.BackBufferFormat = D3DFMT_X8R8G8B8;
	pp.FullScreen_RefreshRateInHz = D3DPRESENT_RATE_DEFAULT;
	pp.PresentationInterval = D3DPRESENT_INTERVAL_IMMEDIATE;
	pp.Windowed = TRUE;
	pp.BackBufferWidth = ClientRect.right;
	pp.BackBufferHeight = ClientRect.bottom;
	if (FAILED(pD3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hwnd, D3DCREATE_SOFTWARE_VERTEXPROCESSING, &pp, &pDevice)))
	{
		return E_FAIL;
	}
	::ShowCursor(false);
	D3DXMATRIX Projection;
	D3DXMatrixPerspectiveFovLH(&Projection, D3DXToRadian(45.0f), 584.0f / 562.0f, 1.0f, 100.0f);
	pDevice->SetTransform(D3DTS_PROJECTION, &Projection);
	Application::Instance()->Create(new Drawing::RendererDX9(pDevice)); //create Application
	Application::Instance()->Run(std::shared_ptr<Form>(new MainForm())); //set our mainform
	Application::Instance()->Enable(); //enable GUI
	return S_OK;
}
//---------------------------------------------------------------------------
void D3DRender()
{
	if(!pDevice)
	{
		return;
	}
	pDevice->Clear(0, 0, D3DCLEAR_TARGET, 0xFF123456, 1.0f, 0);
	pDevice->BeginScene();
	Application::Instance()->GetRenderer()->Begin(); //begin rendering
	Application::Instance()->GetRenderer()->SetRenderRectangle(Drawing::Rectangle(0, 0, 700, 400)); //set the rendering size
 
	//render stuff
	Application::Instance()->Render(); //render gui
	Application::Instance()->GetRenderer()->End(); //end rendering
	pDevice->EndScene();
	pDevice->Present(0,0,0,0);
}
//---------------------------------------------------------------------------
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
	WNDCLASS wc;
	ZeroMemory(&wc, sizeof(wc));
	wc.style = CS_CLASSDC;
	wc.lpfnWndProc = DefWindowProc;
	wc.hInstance = GetModuleHandle(0);
	wc.lpszClassName = "OSHGui";
	wc.hCursor = LoadCursor(0, IDC_ARROW);
	RegisterClass(&wc);
	HWND hwnd = CreateWindowA("OSHGui", "OSHGui", WS_OVERLAPPEDWINDOW, 100, 100, 700, 400, GetDesktopWindow(), 0, wc.hInstance, 0);
	if (SUCCEEDED(D3DInit(hwnd)))
	{
		ShowWindow(hwnd, SW_SHOWDEFAULT );
		UpdateWindow(hwnd);
		MSG msg;
		ZeroMemory(&msg, sizeof(msg));
		while (true)
		{
			if (!IsWindowVisible(hwnd))
				break;
			if (PeekMessage(&msg, 0, 0, 0, PM_REMOVE))
			{
				input.ProcessMessage(&msg);
				if (msg.message == WM_QUIT)
					break;
				TranslateMessage(&msg);
				DispatchMessage(&msg);
			}
			else
			{
				D3DRender();
			}
		}
	}
	if(pDevice)
	{
		pDevice->Release();
	}
	if(pD3D)
	{
		pD3D->Release();
	}
	UnregisterClass("OSHGui", wc.hInstance);
	return 0;
}