[sub]I have a question for u guys, i have tried to compile my code for the two-kings.de tutorial, everthing worked fine until the second lesson. I see to have a strange linker error. tried to look up wich lib was causing this error, no succes so far. So i think u guys can help me out with this error, it bougles my mind :l[/sub]

[sub]The error i get is this:[/sub]

[sub]1>capplication.obj : error LNK2019: unresolved external symbol "public: void __thiscall CApplication::CheckDeviceCaps(void)" (?CheckDeviceCaps@CApplication@@QAEXXZ) referenced in function "public: void __thiscall CApplication::InitD3D(void)" (?InitD3D@CApplication@@QAEXXZ)
1>C:\Users\Alx\Documents\Visual Studio 2008\Projects\twoking\Debug\twoking.exe : fatal error LNK1120: 1 unresolved externals[/sub]

Here is my CApplication header
[size=2]]#ifndef capplication_h
#define capplication_h
[size=2]#include"main.h"
[size=2]class CApplication
{
public:
CApplication(void);
~CApplication(void);

[size=2]//win32 stuff
void InitWindow(void);
void SaveSettings(void);
void LoadSettings(void);
void KillWindow(void);
[size=2]//d3d stuff
void InitD3D(void);
void InitScene(void);
void CheckDeviceCaps(void);
bool CheckDevice(void);
void KillD3D(void);

[size=2]//win32 prototypes
inline bool GetWindowStatus(void)
{
return m_bRunningWindow;
}
inline HWND GetWindowHandle(void)
{
return m_hWindow;
}
inline void SetWindowStatus(bool bRunningWindow)
{
m_bRunningWindow = bRunningWindow;
}
[size=2]//d3d
inline bool GetD3DStatus(void)
{
return m_bRunningD3D;
}
inline LPDIRECT3DDEVICE9 GetDevice(void)
{
return m_pDirect3DDevice;
}
inline void SetD3DStatus(bool bRunningD3D)
{
m_bRunningD3D = bRunningD3D;
}


[size=2]//win32
private:
bool m_bRunningWindow,
m_bRunningD3D;
[size=2] HWND m_hWindow,
m_hBtnStart,
m_hBtnCancel,
m_hLblResolution,
m_hCbResolution,
m_hLblBackBuffer,
m_hCbBackBuffer,
m_hLblDepthStencil,
m_hCbDepthStencil,
m_hLblVertexProcessing,
m_hCbVertexProcessing,
m_hLblMultiSampling,
m_hCbMultiSampling,
m_hLblAnisotropy,
m_hCbAnisotropy;
[size=2] LPDIRECT3D9 m_pDirect3DObject;
LPDIRECT3DDEVICE9 m_pDirect3DDevice;
D3DPRESENT_PARAMETERS m_PresentParameters;
D3DCAPS9 m_DeviceCaps;
[size=2] DWORD m_dwWidth,
m_dwHeight,
m_dwVertexProcessing,
m_dwAnisotropy;
D3DFORMAT m_ColorFormat,
m_DepthStencilFormat;
D3DMULTISAMPLE_TYPE m_MultiSampling;
[size=2] D3DXMATRIX m_matProjection;
float m_fAspectRatio,
m_fFieldOfView,
m_fNearPlane,
m_fFarPlane;
};
[size=2]#endif


And here my CApplication cpp file
[size=2]#include "main.h"

[size=2]CApplication::CApplication(void)
{
m_pDirect3DObject = NULL;
m_pDirect3DDevice = NULL;
[size=2] m_dwWidth = 800;
m_dwHeight = 600;
[size=2] m_ColorFormat = D3DFMT_R5G6B5;
m_DepthStencilFormat = D3DFMT_D16;
m_dwVertexProcessing = D3DCREATE_SOFTWARE_VERTEXPROCESSING;
m_MultiSampling = D3DMULTISAMPLE_NONE;
m_dwAnisotropy = 0;
[size=2] m_fFieldOfView = D3DX_PI / 4.0f;
m_fNearPlane = 1.0f;
m_fFarPlane = 1000.0f;
m_fAspectRatio = (float)m_dwWidth / (float)m_dwHeight;
[size=2] m_bRunningWindow = true;
m_bRunningD3D = false;
[size=2] InitWindow();
}
[size=2]CApplication::~CApplication(void)
{
KillD3D();
KillWindow();
}
[size=2]void CApplication::InitWindow(void)
{
WNDCLASSEX screen;
RECT size;
[size=2]InitCommonControls();
GetClientRect(GetDesktopWindow(), &size);
[size=2]screen.cbSize = sizeof(WNDCLASSEX);
screen.style = CS_HREDRAW | CS_VREDRAW;
screen.lpfnWndProc = WindowProcedure;
screen.cbClsExtra = 0;
screen.cbWndExtra = 0;
screen.hInstance = GetModuleHandle(NULL);
screen.hIcon = NULL;
screen.hCursor = NULL;
screen.hbrBackground = GetSysColorBrush(COLOR_BTNFACE);
screen.lpszMenuName = NULL;
screen.lpszClassName = "Classname";
screen.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
[size=2]RegisterClassEx(&screen);
[size=2]m_hWindow = CreateWindowEx(WS_EX_CONTROLPARENT,
"Classname",
TITLE,
WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_MINIMIZEBOX | WS_VISIBLE,
((1650 / 2) - WINDOW_X) + (WINDOW_X / 100 * 55) ,
((1050 / 2) - WINDOW_Y) + (WINDOW_Y / 100 * 45) ,
WINDOW_X,
WINDOW_Y,
NULL,
NULL,
GetModuleHandle(NULL),
NULL);
[size=2]m_hLblResolution = CreateWindow("static",
"Hai:3",
WS_CHILD | WS_VISIBLE | SS_LEFT,
20,
20,
200,
18,
m_hWindow,
NULL,
(HINSTANCE)GetWindowLong(m_hWindow, GWL_HINSTANCE),
NULL);
SendMessage(m_hCbResolution,CB_ADDSTRING,0,(long)"640 x 480");
SendMessage(m_hCbResolution,CB_ADDSTRING,0,(long)"800 x 600");
[size=2]LoadSettings();
}
[size=2]void CApplication::InitD3D(void)
{
if((m_pDirect3DObject = Direct3DCreate9(D3D_SDK_VERSION)) == NULL)
{
MessageBox(m_hWindow, "[0x0]Failed to create Direct3D Object", "Init D3D", MB_OK);
m_bRunningD3D = false;
}
ZeroMemory(&m_PresentParameters, sizeof(m_PresentParameters));
m_PresentParameters.Windowed = false;
m_PresentParameters.SwapEffect = D3DSWAPEFFECT_DISCARD;
m_PresentParameters.EnableAutoDepthStencil = true;
m_PresentParameters.AutoDepthStencilFormat = m_DepthStencilFormat;
m_PresentParameters.hDeviceWindow = m_hWindow;
m_PresentParameters.BackBufferWidth = m_dwWidth;
m_PresentParameters.BackBufferHeight = m_dwHeight;
m_PresentParameters.BackBufferFormat = m_ColorFormat;
m_PresentParameters.MultiSampleType = m_MultiSampling;
[size=2]if(FAILED(m_pDirect3DObject->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL,m_hWindow,m_dwVertexProcessing,&m_PresentParameters,&m_pDirect3DDevice)))
{
MessageBox(m_hWindow, "[0x1]Failed to create Direct3D Device", "Init D3D", MB_OK);
m_bRunningD3D = false;
}
ShowCursor(false);
[size=2]InitScene();
CheckDeviceCaps();
}
void CApplication::InitScene(void)
{
D3DXMatrixPerspectiveFovLH(&m_matProjection, m_fFieldOfView,m_fAspectRatio,m_fNearPlane,m_fFarPlane);
m_pDirect3DDevice->SetTransform(D3DTS_PROJECTION,&m_matProjection);
[size=2]for(unsigned i = 0;i < 8;++i)
{
m_pDirect3DDevice->SetSamplerState(i,D3DSAMP_MINFILTER,D3DTEXF_LINEAR);
m_pDirect3DDevice->SetSamplerState(i,D3DSAMP_MAGFILTER,D3DTEXF_LINEAR);
m_pDirect3DDevice->SetSamplerState(i,D3DSAMP_MIPFILTER,D3DTEXF_ANISOTROPIC);
m_pDirect3DDevice->SetSamplerState(i,D3DSAMP_MAXANISOTROPY,m_dwAnisotropy);
}
}
[size=2]bool CApplication::CheckDevice(void)
{
switch(m_pDirect3DDevice->TestCooperativeLevel())
{
case D3DERR_DEVICELOST:
{
MessageBox(m_hWindow,"[0x2]Device has been lost","CheckDevice()",MB_OK);
return false;
}
case D3DERR_DEVICENOTRESET:
{
if(FAILED(m_pDirect3DDevice->Reset(&m_PresentParameters)))
{
MessageBox(m_hWindow,"[0x3]Device failed to reset","CheckDevice()",MB_OK);
return false;
}
return true;
}
default: return true;
}
}
[size=2]void CApplication::KillD3D(void)
{
if(m_pDirect3DDevice != NULL)
{
m_pDirect3DDevice->Release();
m_pDirect3DDevice = NULL;
}
if(m_pDirect3DObject != NULL)
{
m_pDirect3DObject->Release();
m_pDirect3DObject = NULL;
}
[size=2]}
[size=2]void CApplication::LoadSettings(void)
{
}
[size=2]void CApplication::SaveSettings(void)
{
}
[size=2]void CApplication::KillWindow(void)
{
UnregisterClass("ClassName",GetModuleHandle(NULL));
}

You don't seem to have a function definition for your CheckDeviceCaps() function.