Undefined Reference to Direct3DCreate9@4

Ok, I'm trying to compile some C++ source with BlitzMax as I'm doing a little experimenting with DirectX. The C++ code compiles fine in C++ but when Imported into BlitzMax I get the error: Undefined Reference to Direct3DCreate9@4. <-- Bah No thats no a real E-Mail address...

I'm thinking this is because there's a missing Lib or something but I'm using other Direct3D commands and they aren't exibiting the same behavious. Unless it breaks the complimation at the first undefined reference. I have tried using: #pragma comment(lib, "libd3d9.a") with no luck at all.

What do I do, Im lost :( BTW Here's the code:

main.cpp

#include "d3d9.h"

struct D3DWindow
{
	WNDCLASS wClass;
	HINSTANCE hInstance;
};

struct D3DDevice
{
	IDirect3D9 *m_Object;
	IDirect3DDevice9 *m_Device;
	HWND hWnd;
};

LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);

D3DDevice Device;
D3DWindow Window;
bool App_Run;

void iMessagePump(void)
{
	MSG Msg;
	while(PeekMessage(&Msg, NULL, 0, 0, PM_REMOVE))
	{
		TranslateMessage(&Msg);
		DispatchMessage(&Msg);
	}
}

void iCleanup(void)
{
	if(Device.m_Device)
		Device.m_Device->Release();

	if(Device.m_Object)
		Device.m_Object->Release();

	if(Device.hWnd)
		DestroyWindow(Device.hWnd);
}

void iGraphics3D(int Width, int Height, int Depth, int Fullscreen)
{
	DWORD Style;

	if(Fullscreen)
		Style = WS_POPUP | WS_VISIBLE;
	else
		Style = WS_OVERLAPPED | WS_SYSMENU | WS_VISIBLE;

	Window.hInstance = GetModuleHandle(0);
	Window.wClass.style = CS_OWNDC;
	Window.wClass.cbClsExtra = 0;
	Window.wClass.cbWndExtra = 0;
	Window.wClass.hInstance = Window.hInstance;
	Window.wClass.hIcon = LoadIcon(NULL,IDI_APPLICATION);
	Window.wClass.hCursor = LoadCursor(NULL,IDC_ARROW);
	Window.wClass.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
	Window.wClass.lpszMenuName = NULL;
	Window.wClass.lpszClassName = "Engine";
	Window.wClass.lpfnWndProc = WndProc;

	RegisterClass(&Window.wClass);

	Device.m_Object = Direct3DCreate9(D3D_SDK_VERSION);

	Device.hWnd = CreateWindow("Engine", "Test", Style, 150, 150, Width, Height, NULL, NULL, Window.hInstance, NULL);

	

	D3DPRESENT_PARAMETERS dParam;
	ZeroMemory(&dParam, sizeof(dParam));

	dParam.BackBufferCount = 1;
	dParam.MultiSampleType = D3DMULTISAMPLE_NONE;
	dParam.MultiSampleQuality = 0;
	dParam.SwapEffect = D3DSWAPEFFECT_DISCARD;
	dParam.Flags = 0;
	dParam.hDeviceWindow = Device.hWnd;
	dParam.FullScreen_RefreshRateInHz = D3DPRESENT_RATE_DEFAULT;
	dParam.PresentationInterval = D3DPRESENT_INTERVAL_DEFAULT;
	dParam.BackBufferFormat = D3DFMT_R5G6B5;
	dParam.EnableAutoDepthStencil = false;
	
	if(Fullscreen)
	{
		dParam.BackBufferWidth = Width;
		dParam.BackBufferHeight = Height;
		dParam.Windowed = false;
		ShowCursor(false);
	}
	else
		dParam.Windowed = true;

	Device.m_Object->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, Device.hWnd, D3DCREATE_HARDWARE_VERTEXPROCESSING, &dParam, &Device.m_Device);
	App_Run = true;

	if(Device.m_Object = NULL)
		App_Run = false;

	if(Device.m_Device == NULL)
		App_Run = false;
}

void iRenderWorld()
{
	Device.m_Device->Clear(0, NULL, D3DCLEAR_TARGET, 0x00000000, 1.0, 0);
	Device.m_Device->BeginScene();
	Device.m_Device->EndScene();
}

void iFlip(bool VWait = true)
{
	Device.m_Device->Present(NULL, NULL, NULL, NULL);
}

LRESULT CALLBACK WndProc(HWND hWnd, UINT Message, WPARAM wParam, LPARAM lParam)
{
	switch(Message)
	{
	case WM_PAINT:
		break;
	case WM_DESTROY:
		App_Run = false;
		break;
	case WM_KEYDOWN:
		App_Run = false;
		break;
	}

	return DefWindowProc(hWnd, Message, wParam, lParam);
}

test.bmx

Import "main.cpp"

Extern
	Function iGraphics3D(Width, Height, Depth, Fullscreen)
	Function iMessagePump()
	Function iCleanup()
	Function iRenderWorld()
	Function iFlip(VSync:Int)
End Extern

iGraphics3D(800, 600, 32, 0)

I'm also getting another error: undefined reference to `iGraphics3D' but Im assuming thats because its failing to link the Direct3DCreate9 function.

Also, Here are the libraries I am using. They are a Direct convert from the Visual Studio lib style library format into MinGW compatible .a format.

Thanks in Advance.

I worked out why I was getting the iGraphics3D error, It seems I have to use extern "C" { } in my code around the functions. Im still getting the same Direct3DDevice9 error though'

Without having gone into any greater degree of detail, I would assume it's because MinGW can't find the DX9 SDK includes.

Does MinGW compile them? You wheren't very specific about how "it compiles in C++".

The C++ code compiles in Visual Studio with the d3d9.lib file linked. I tried linking the equivalent libd3d9.a file (For the MinGW compiler, which BlitzMax uses) by the #pragma comment(lib, "libd3d9.a") without any luck. I believe that command is depreciated as you can change the "libd3d9.a" to practically anything and it wont give an error.

Do you have the DLL or LIB (can't say for sure which is needed. Normally its the DLL as most .a creators do it out of the DLL) in the same directory as the a?

Hi, I just figured out what the problem was. I added this to the top of my bmx program and it compiles fine,

Import "libd3d9.a"

Thanks for the help everyone :)