Thread: Trouble with Windows/DirectX programming

UPDATE:
I put the

Code:

LPDIRECT3D9 g_pDirect3D = NULL;
LPDIRECT3DDEVICE9 g_pDirect3D_Device = NULL;

At the top, now all I get is:
error C2065: 'WndProc' : undeclared identifier

Update: I just fixed the wndproc thing, just a typo there..

I compiled, and debuged and got this:

Code:

1>main.obj : error LNK2019: unresolved external symbol _Direct3DCreate9@4 referenced in function _WinMain@16
1>fatal error LNK1120: 1 unresolved externals

Code:

#include <windows.h>
#include <d3d9.h>

/// Update 1
LPDIRECT3D9 g_pDirect3D = NULL;
LPDIRECT3DDEVICE9 g_pDirect3D_Device = NULL;

// Update 2, changed WinProc to WndProc, silly typo xD
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lParam);

int __stdcall WinMain(HINSTANCE hInstance, HINSTANCE hPrevInst, LPSTR lpCmdLine, int nShow)
{
	MSG msg;

	WNDCLASSEX wc = { sizeof(WNDCLASSEX), CS_VREDRAW|CS_HREDRAW|CS_OWNDC,WndProc, 
		0,0,hInstance, NULL, NULL, (HBRUSH)(COLOR_WINDOW+1),NULL, "DX9_TUTORIAL1_CLASS", NULL };

	RegisterClassEx(&wc);

	HWND hMainWnd = CreateWindow(
		"DX9_TUTORIAL1_CLASS", 
		"DirectX9 test", 
		WS_OVERLAPPEDWINDOW, 
		100,100,
		300,300,
		NULL,
		NULL,
		hInstance, 
		NULL);


	g_pDirect3D = Direct3DCreate9(D3D_SDK_VERSION);

	D3DPRESENT_PARAMETERS PresentParams;

	memset(&PresentParams, 0, sizeof(D3DPRESENT_PARAMETERS));

	PresentParams.Windowed = TRUE;
	PresentParams.SwapEffect = D3DSWAPEFFECT_DISCARD;


	g_pDirect3D->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hMainWnd, 
		D3DCREATE_SOFTWARE_VERTEXPROCESSING, &PresentParams, &g_pDirect3D_Device);

	ShowWindow(hMainWnd, nShow);
	UpdateWindow(hMainWnd);


	while (GetMessage(&msg, NULL, 0, 0))
	{

		TranslateMessage(&msg);
		DispatchMessage(&msg);

	}


	return 0;


}

LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{

	switch(msg)
	{
	
	case WM_DESTROY:
		PostQuitMessage(0);
		return 0;

	case WM_PAINT:
		g_pDirect3D_Device->Clear(0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0,0,255),1.0f, 0);
		g_pDirect3D_Device->Present(NULL, NULL, NULL, NULL);
		ValidateRect(hwnd, NULL);
		return 0;

	}

	g_pDirect3D_Device->Release();
	g_pDirect3D->Release();
	return DefWindowProc(hwnd, msg, wParam, lParam);

}

Most of the errors are just saying an unidentifier

Code:

(10) : error C2065: 'WndProc' : undeclared identifier
(27) : error C2065: 'g_pDirect3D' : undeclared identifier
(37) : error C2065: 'g_pDirect3D' : undeclared identifier
(37) : error C2227: left of '->CreateDevice' must point to class/struct/union/generic type
1>        type is ''unknown-type''
(37) : error C2065: 'g_pDirect3D_Device' : undeclared identifier
(68) : error C2065: 'g_pDirect3D_Device' : undeclared identifier
(68) : error C2227: left of '->Clear' must point to class/struct/union/generic type
1>        type is ''unknown-type''
(69) : error C2065: 'g_pDirect3D_Device' : undeclared identifier
(69) : error C2227: left of '->Present' must point to class/struct/union/generic type
1>        type is ''unknown-type''
(75) : error C2065: 'g_pDirect3D_Device' : undeclared identifier
(75) : error C2227: left of '->Release' must point to class/struct/union/generic type
1>        type is ''unknown-type''
(76) : error C2065: 'g_pDirect3D' : undeclared identifier
(76) : error C2227: left of '->Release' must point to class/struct/union/generic type