#include <windows.h>
#include "directx/d3d9.h"

HWND hWnd;
LPDIRECT3D9 pD3D;
LPDIRECT3DDEVICE9 pDevice; 

LRESULT CALLBACK WndProc( HWND hWnd , UINT message , 
    WPARAM wParam , LPARAM lParam){
    switch(message){ 
    case WM_CLOSE: 
        PostQuitMessage(0); 
        return 0; 
    } 
    return DefWindowProc(hWnd,message,wParam,lParam); 
}

bool CreateSimpWindow(int width, int height){

    // Create A Window Class Structure 
    WNDCLASSEX wc;
    wc.cbClsExtra = 0;
    wc.cbSize = sizeof(wc); 
    wc.cbWndExtra = 0; 
    wc.hbrBackground = NULL;
    wc.hCursor = NULL; 
    wc.hIcon = NULL; 
    wc.hIconSm = NULL; 
    wc.hInstance = GetModuleHandle(NULL);
    wc.lpfnWndProc = WndProc;
    wc.lpszClassName = "X3D"; 
    wc.lpszMenuName = NULL;
    wc.style = CS_VREDRAW|CS_HREDRAW|CS_OWNDC;

    // Register Window Class
    RegisterClassEx(&wc); 

    // Create Window 
    hWnd = CreateWindowEx(0, 
       "X3D", "DX9 Init Test", 
       WS_OVERLAPPEDWINDOW|WS_VISIBLE, 100,100,width,height,
       NULL,NULL, wc.hInstance, 0);

    return true;
}

bool InitD3D(){
    if((pD3D = Direct3DCreate9(D3D_SDK_VERSION))==NULL){
        return false;
    }
    D3DDISPLAYMODE d3ddm;
    pD3D->GetAdapterDisplayMode(D3DADAPTER_DEFAULT, &d3ddm);
    D3DPRESENT_PARAMETERS d3dpp;
    ZeroMemory(&d3dpp, sizeof(d3dpp));
    d3dpp.BackBufferFormat = d3ddm.Format;
    d3dpp.Windowed = true;
    d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
    if(FAILED(pD3D->CreateDevice( D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL,
    hWnd, D3DCREATE_SOFTWARE_VERTEXPROCESSING, &d3dpp, &pDevice))){
        return false;
    }
    return true;
} 

void RenderD3DScene(){
    pDevice->Clear(0,NULL,D3DCLEAR_TARGET,0,1,0);
    pDevice->Present(NULL,NULL,NULL,NULL);
} 

void MessageLoop(){
    MSG msg; 
    while(true){
        RenderD3DScene();
        if(PeekMessage(&msg,hWnd,0,0,PM_REMOVE)){
             if(msg.message==WM_QUIT)return;
             TranslateMessage(&msg); 
             DispatchMessage(&msg); 
        }
    } 
}

INT WINAPI WinMain( HINSTANCE , HINSTANCE , LPSTR , INT ){

    if(!CreateSimpWindow(400, 400))return 1;

    if(!InitD3D())return 2; 

    MessageLoop(); 

    return 0;
} 

#include <windows.h>#include "directx/d3d9.h"HINSTANCE hInst;							// application instanceHWND wndHandle;								// application window handleLPDIRECT3D9             pD3D;				// the Direct3D ObjectLPDIRECT3DDEVICE9       pd3dDevice;			// the Direct3D Device// forward declarationsbool initWindow(HINSTANCE hInstance);LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);// DirectX functionsbool initDirect3D();	void render(void);// WinMainint WINAPI WinMain(HINSTANCE hInstance, 				   HINSTANCE hPrevInstance, 				   LPTSTR lpCmdLine, int nCmdShow){	if (!initWindow(hInstance))	{		MessageBox(NULL, "Unable to create window", "ERROR", MB_OK);		return false;	}	if (!initDirect3D())	{		MessageBox(NULL, "Unable to init Direct3D", "ERROR", MB_OK);		return false;	}	// Main message loop:    MSG msg;     ZeroMemory( &msg, sizeof(msg) );    while( msg.message!=WM_QUIT )    {		if( PeekMessage( &msg, NULL, 0U, 0U, PM_REMOVE ) )        {			TranslateMessage( &msg );            DispatchMessage( &msg );        }				else		{			render();		}     }	// release the device and the direct3D object	if( pd3dDevice != NULL)         pd3dDevice->Release();    if( pD3D != NULL)        pD3D->Release();			return (int) msg.wParam;}// initWindowbool initWindow(HINSTANCE hInstance){	WNDCLASSEX wcex;	wcex.cbSize = sizeof(WNDCLASSEX);	wcex.style			= CS_HREDRAW | CS_VREDRAW;	wcex.lpfnWndProc	= (WNDPROC)WndProc;	wcex.cbClsExtra		= 0;	wcex.cbWndExtra		= 0;	wcex.hInstance		= hInstance;	wcex.hIcon			= 0;	wcex.hCursor		= LoadCursor(NULL, IDC_ARROW);	wcex.hbrBackground	= (HBRUSH)(COLOR_WINDOW+1);	wcex.lpszMenuName	= NULL;	wcex.lpszClassName	= "DirectX Init";	wcex.hIconSm		= 0;	RegisterClassEx(&wcex);	// create the window	wndHandle = CreateWindow("DirectX Init", 							 "DirectX Init", 							 WS_OVERLAPPEDWINDOW,							 CW_USEDEFAULT, 							 CW_USEDEFAULT, 							 640, 							 480, 							 NULL, 							 NULL, 							 hInstance, 							 NULL);   if (!wndHandle)      return false;      ShowWindow(wndHandle, SW_SHOW);   UpdateWindow(wndHandle);   return true;}// WndProcLRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam){	switch (message) 	{		case WM_DESTROY:			PostQuitMessage(0);			break;	}	return DefWindowProc(hWnd, message, wParam, lParam);}//initializes direct3Dbool initDirect3D(){	pD3D = NULL;	pd3dDevice = NULL;	// create the directX object	if( NULL == ( pD3D = Direct3DCreate9( D3D_SDK_VERSION ) ) )	{		return false;	}	// fill the presentation parameters structure	D3DPRESENT_PARAMETERS d3dpp;     ZeroMemory( &d3dpp, sizeof(d3dpp) );    d3dpp.Windowed = TRUE;    d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;    d3dpp.BackBufferFormat = D3DFMT_UNKNOWN;	d3dpp.BackBufferCount  = 1;	d3dpp.BackBufferHeight = 480;	d3dpp.BackBufferWidth  = 640;	d3dpp.hDeviceWindow    = wndHandle;	// create a default directx device    if( FAILED( pD3D->CreateDevice( D3DADAPTER_DEFAULT, D3DDEVTYPE_REF, wndHandle,                                      D3DCREATE_SOFTWARE_VERTEXPROCESSING,                                      &d3dpp, &pd3dDevice ) ) )    {        return false;    }	return true;}//render void render(void){	// check to make sure we have a valid Direct3D Device	if( NULL == pd3dDevice )        return;    // Clear the backbuffer to a blue color    pd3dDevice->Clear( 0, NULL, D3DCLEAR_TARGET, D3DCOLOR_XRGB(0,0,255), 1.0f, 0 );	// Present the backbuffer contents to the display    pd3dDevice->Present( NULL, NULL, NULL, NULL );}

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