quote:Original post by stro
Shouldn't you have

d3dpp.hDeviceWindow = Apphwnd;

?

quote:Original post by Dave Hunt
You''re not checking the return value of CreateWindow(). It is possible that the CreateWindow() call failed and you''re getting NULL for Apphwnd. Given that CreateDevice() is complaining about your window handle, I''d bet that that is the case.

Are ApplicationName and "APP" the same value? If not, that would explain why your window creation failed.

Also, you''re not checking the return value of RegisterClassEx(). If that fails, then your window creation will fail, as well.

Always check return value from API calls. That can save you a lot of headaches.

#ifndef _FRAMEWORK_ #define _FRAMEWORK_#include <d3d8.h>#include <d3dx8.h>#include <mmsystem.h>#include <stdio.h>#include <tchar.h>#include <D3DUtil.h>#include <DXUtil.h>#include <dinput.h>#define DIRECTINPUT_VERSION 0x0800#define VEC D3DXVECTOR3#define WINDOWED 1#define FULLSCREEN 0INT WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR, INT );LRESULT WINAPI MsgProc( HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam );class CFrameWorkApplication{protected:	int iAppWidth;	int iAppHeight;	int iAppBpp;	bool bWindowed;	int bActive;	int bReady;	int bHasFocus;	HWND Apphwnd;	char *ApplicationName;	LPDIRECT3D8             d3d;	LPDIRECT3DDEVICE8       d3ddevice;	LPDIRECT3DSURFACE8		backbuffer;	LPDIRECT3DSURFACE8		zbuffer;	HRESULT SetDisplayMode();			//Setup up direct 3D	HRESULT ReleaseDisplay();	HRESULT ResetDisplay();	HRESULT ToggleFullScreen();public:	~CFrameWorkApplication();	//Desturctor    CFrameWorkApplication();	//Consturctor	RunApplication();	ShutDownApplication();	SetUpApplication(int width,int height,int bpp,bool screenmode,char *name);	LRESULT FrameWorkMsgProc( HWND hWnd, UINT uMsg, WPARAM wParam,LPARAM lParam );};#endif

#include "framework.h"static CFrameWorkApplication* pThisApp = NULL;/////////////////////Message handler/////////////////////LRESULT WINAPI MsgProc( HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam ){	return pThisApp->FrameWorkMsgProc(hWnd,msg,wParam,lParam);}////////////////////////Class Constructor	////////////////////////CFrameWorkApplication::CFrameWorkApplication(){    pThisApp = this;	///////////////////	//Setup the class//	///////////////////	//Spec App	bWindowed=false;	bActive=false;	bReady=false;	bHasFocus=false;	iAppWidth=NULL;	iAppHeight=NULL;	iAppBpp=NULL;	Apphwnd=NULL;	ApplicationName=NULL;	d3d=NULL;	d3ddevice=NULL;	backbuffer=NULL;	zbuffer=NULL;}//////////////////////Class Destructor//////////////////////CFrameWorkApplication::~CFrameWorkApplication(){}/////////////////////////////////////////////////This function Creates the Direct 3d Objects/////////////////////////////////////////////////HRESULT CFrameWorkApplication::SetDisplayMode(){	// Create the D3D object.	d3d=Direct3DCreate8(D3D_SDK_VERSION);	if(d3d==NULL)	{		MessageBox(Apphwnd,"Can not creat Direct 3D interface","ERROR",MB_OK);		return E_FAIL;	}	D3DDISPLAYMODE d3ddm;	if(FAILED(d3d->GetAdapterDisplayMode( D3DADAPTER_DEFAULT, &d3ddm ) ) )	{		MessageBox(Apphwnd,"Can not get display mode","ERROR",MB_OK);		return E_FAIL;	}	D3DPRESENT_PARAMETERS d3dpp; 	ZeroMemory( &d3dpp, sizeof(d3dpp) );//	if(!bWindowed)//	{		d3dpp.Windowed = false;		d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;		d3dpp.FullScreen_PresentationInterval=D3DPRESENT_INTERVAL_IMMEDIATE;		d3dpp.BackBufferFormat = d3ddm.Format;		d3dpp.EnableAutoDepthStencil = TRUE;		d3dpp.AutoDepthStencilFormat = D3DFMT_D16;		d3dpp.BackBufferWidth=800;//iAppWidth;		d3dpp.BackBufferHeight=600;//iAppHeight;/*	}	else	{		d3dpp.Windowed = true;		d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;		d3dpp.BackBufferFormat = d3ddm.Format;		d3dpp.EnableAutoDepthStencil = TRUE;		//if(iAppBpp==16)		//{			d3dpp.AutoDepthStencilFormat = D3DFMT_D16;		//}		d3dpp.BackBufferWidth=iAppWidth;		d3dpp.BackBufferHeight=iAppHeight;	}*/	HRESULT hr = d3d->CreateDevice( D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, Apphwnd,			            		 D3DCREATE_HARDWARE_VERTEXPROCESSING,								 &d3dpp, &d3ddevice );	if(FAILED(hr))	{		MessageBox(Apphwnd,"Failed to Create a Direct 3D Device","ERROR",MB_OK);		return E_FAIL;	}	d3ddevice->GetRenderTarget(&backbuffer);	d3ddevice->GetDepthStencilSurface(&zbuffer);	return S_OK;}//////////////////////////////////////////////////This function Releases the direct 3d Objects//////////////////////////////////////////////////HRESULT CFrameWorkApplication::ReleaseDisplay(){	return S_OK;}////////////////////////////////////////////////This function Resets the direct 3d object	////when the windows has regained focus of	////switched mode								////////////////////////////////////////////////HRESULT CFrameWorkApplication::ResetDisplay(){	return S_OK;}////////////////////////////////////////////////This function switches between full screen////and windowed mode							////////////////////////////////////////////////HRESULT CFrameWorkApplication::ToggleFullScreen(){	return S_OK;}////////////////////////////////////////////////////This function starts the framework application////////////////////////////////////////////////////CFrameWorkApplication::RunApplication(){	//First we must call the init function//	if(FAILED(InitApp())) goto ShutDown;	//Set the application to active	bActive=true;	WNDCLASSEX wc={sizeof(WNDCLASSEX), CS_CLASSDC,MsgProc, 0L, 0L,					GetModuleHandle(NULL), NULL, NULL, (HBRUSH)GetStockObject(BLACK_BRUSH),					NULL,ApplicationName, NULL };	RegisterClassEx( &wc );	// Create the application's window	Apphwnd = CreateWindow( ApplicationName,ApplicationName,				            WS_EX_TOPMOST, 50, 50, iAppWidth+8, iAppHeight+34,					        GetDesktopWindow(), NULL, wc.hInstance, NULL);	if(!Apphwnd)	{	//	MessageBox(Apphwnd,"Failed to create the Window","ERROR",MB_OK);	//	goto ShutDown;	}	// Show the window	ShowWindow( Apphwnd, SW_SHOWDEFAULT );	UpdateWindow( Apphwnd );	if(FAILED(SetDisplayMode())) goto ShutDown;	bReady=true;	//Now lets get the Application loop running	MSG msg;	ZeroMemory( &msg, sizeof(msg) );	while(msg.message!=WM_QUIT )	{		if( PeekMessage( &msg, NULL, 0U, 0U, PM_REMOVE ) )		{			TranslateMessage( &msg );			DispatchMessage( &msg );		}		else if(bHasFocus && bActive)		{		}	}ShutDown:	//If we get here then the app is closing	ShutDownApplication();	UnregisterClass("ApplicationName", wc.hInstance );}///////////////////////////////////////////////////////This function shutsdown the framework application///////////////////////////////////////////////////////CFrameWorkApplication::ShutDownApplication(){}//////////////////////////////////////////////////////This function is call directly after you declair////the framework because is sets the display params//////////////////////////////////////////////////////CFrameWorkApplication::SetUpApplication(int width,int height,int bpp,bool screenmode,char *name){	iAppWidth=width;	iAppHeight=height;	iAppBpp=bpp;	bWindowed=screenmode;	ApplicationName = name;}/////////////////////////////////////////////The message handler for the application/////////////////////////////////////////////LRESULT CFrameWorkApplication::FrameWorkMsgProc( HWND hWnd, UINT uMsg, WPARAM wParam,LPARAM lParam ){	switch( uMsg )	{		case WM_DESTROY:		PostQuitMessage( 0 );		return 0;		break;	}	return DefWindowProc( Apphwnd, uMsg, wParam, lParam );}

#include "framework.h"INT WINAPI WinMain( HINSTANCE hInst, HINSTANCE, LPSTR, INT ){	CFrameWorkApplication App;	App.SetUpApplication(800,600,16,FULLSCREEN,"TestApp");	App.RunApplication();	//The app has closed so good buy	return 0;}