source code problem, please help

I am trying to get opengl up and running. so I went through the nehe website copyed bits of code here and there (hopeing to learn more by studying rather than just copying) , but it won't work.

#include <windows.h>
#include <GL\gl.h>
#include <GL\glu.h>	
#include <GL\glaux.h>
#include <stdio.h>

#define width	800
#define height	600
#define bpp		16

#define WINDOW_CLASS_NAME "WINXCLASS"

#define KEY_DOWN(vk_code) ((GetAsyncKeyState(vk_code) & 0x8000) ? 1 : 0)
#define KEY_UP(vk_code)   ((GetAsyncKeyState(vk_code) & 0x8000) ? 0 : 1)


HGLRC           hrc=NULL;						
HDC             hdc=NULL;						
HWND            hwnd=NULL;
HINSTANCE       hin;

bool	keys[256];
bool	active=TRUE;
bool	fullscreen=TRUE;


GLfloat		xrot;							
GLfloat		yrot;							
GLfloat		zrot;


GLuint	texture[1];


LRESULT	CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
int init(void);
int gmain(void);
void shutdown(void);
AUX_RGBImageRec *LoadBMP(char *filename);

int WINAPI WinMain(	HINSTANCE	hInstance,			
			HINSTANCE	hPrevInstance,				
			LPSTR		lpCmdLine,			
			int		nCmdShow){

	MSG	msg;	
	BOOL	done=FALSE;	

	GLuint		PixelFormat;
	WNDCLASS winclass;

	
	RECT		WindowRect;
	WindowRect.left=(long)0;	
	WindowRect.right=(long)width;	
	WindowRect.top=(long)0;			
	WindowRect.bottom=(long)height;
	
	
	hin					= GetModuleHandle(NULL);
	winclass.style = CS_DBLCLKS | CS_OWNDC | CS_HREDRAW | CS_VREDRAW;
    winclass.lpfnWndProc = WndProc;
    winclass.cbClsExtra = 0;
    winclass.cbWndExtra = 0;
    winclass.hInstance = hin;
    winclass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
    winclass.hCursor = LoadCursor(NULL, IDC_ARROW);
    winclass.hbrBackground = NULL;
    winclass.lpszMenuName = NULL; 
    winclass.lpszClassName = WINDOW_CLASS_NAME;
	
	RegisterClass(&winclass);
	
	
	if (!(hwnd = CreateWindowEx(WS_EX_APPWINDOW,
	             WINDOW_CLASS_NAME,
			     "ha ha ha",	
			     WS_POPUP | WS_CLIPSIBLINGS | WS_CLIPCHILDREN,
			     0,0,	   
			     width,height,
			     NULL,	 
			     NULL,	
			     hin,
			     NULL))){	
   return(0);
   }
	
	
	
	DEVMODE dms;					
	memset(&dms,0,sizeof(dms));		
	dms.dmSize=sizeof(dms);		
	dms.dmPelsWidth	= width;	
	dms.dmPelsHeight	= height;	
	dms.dmBitsPerPel	= bpp;		
	dms.dmFields=DM_BITSPERPEL|DM_PELSWIDTH|DM_PELSHEIGHT;

	ChangeDisplaySettings(&dms,CDS_FULLSCREEN);
						
	ShowCursor(FALSE);

	
	static	PIXELFORMATDESCRIPTOR pfd=					// pfd Tells Windows How We Want Things To Be
	{
		sizeof(PIXELFORMATDESCRIPTOR),					// Size Of This Pixel Format Descriptor
		1,								// Version Number
		PFD_DRAW_TO_WINDOW |						// Format Must Support Window
		PFD_SUPPORT_OPENGL |						// Format Must Support OpenGL
		PFD_DOUBLEBUFFER,						// Must Support Double Buffering
		PFD_TYPE_RGBA,							// Request An RGBA Format
		bpp,								// Select Our Color Depth
		0, 0, 0, 0, 0, 0,						// Color Bits Ignored
		0,								// No Alpha Buffer
		0,								// Shift Bit Ignored
		0,								// No Accumulation Buffer
		0, 0, 0, 0,							// Accumulation Bits Ignored
		16,								// 16Bit Z-Buffer (Depth Buffer)
		0,								// No Stencil Buffer
		0,								// No Auxiliary Buffer
		PFD_MAIN_PLANE,							// Main Drawing Layer
		0,								// Reserved
		0, 0, 0								// Layer Masks Ignored
	};

	
	hdc=GetDC(hwnd);

	PixelFormat=ChoosePixelFormat(hdc,&pfd);

	SetPixelFormat(hdc,PixelFormat,&pfd);

	hrc=wglCreateContext(hdc);

	wglMakeCurrent(hdc,hrc);

	ShowWindow(hwnd,SW_SHOW);	
	SetForegroundWindow(hwnd);	
	SetFocus(hwnd);				

	init();

	///load texture
	/*AUX_RGBImageRec *tex[1];
	memset(tex,0,sizeof(void *)*1);	
	tex[0]=LoadBMP("c:\\happy.bmp");
	glGenTextures(1, &texture[0]);
	glBindTexture(GL_TEXTURE_2D, texture[0]);
	glTexImage2D(GL_TEXTURE_2D, 0, 3, tex[0]->sizeX, 
		tex[0]->sizeY, 0, GL_RGB, GL_UNSIGNED_BYTE, 
		tex[0]->data);
	glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
	glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
	if(tex[0]){
		if(tex[0]->data){
			free(tex[0]->data);
		}
		free(tex[0]);
	}
*/
	///end load texture
	
	while(1){
      if (PeekMessage(&msg,NULL,0,0,PM_REMOVE)){ 
	 if (msg.message == WM_QUIT)
            break;
	
	 TranslateMessage(&msg);

         DispatchMessage(&msg);
      } 
    
      if(gmain()==0)
		  break;
	  SwapBuffers(hdc);	
   
	} 	


	shutdown();


	return (msg.wParam);						

}







LRESULT CALLBACK WndProc(HWND hwnd,UINT msg,WPARAM wparam,LPARAM lparam){

PAINTSTRUCT ps;	
HDC hdc;	 

 
switch(msg){	
	
	case WM_CREATE:{
             return(0);
	} break;

        case WM_PAINT:{
             hdc = BeginPaint(hwnd,&ps);
             EndPaint(hwnd,&ps);
             return(0);
        } break;

	case WM_DESTROY:{
             PostQuitMessage(0);
	     return(0);
	} break;

	default:break;

}

 
return (DefWindowProc(hwnd, msg, wparam, lparam));

}



int init(void){
	glEnable(GL_TEXTURE_2D);
	glShadeModel(GL_SMOOTH);
	glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
	glClearDepth(1.0f);						
	glEnable(GL_DEPTH_TEST);				
	glDepthFunc(GL_LEQUAL);
	glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
	return(0);
}

void shutdown(void){
	ChangeDisplaySettings(NULL,0);					
	ShowCursor(TRUE);
	wglMakeCurrent(NULL,NULL);
	if(hrc){
		wglDeleteContext(hrc);
		hrc=NULL;
	}
	if(hdc){
		ReleaseDC(hwnd,hdc);
		hdc=NULL;
	}
	if(hwnd){
		DestroyWindow(hwnd);
		hwnd=NULL;
	}	
	
	UnregisterClass("WINDOWS_CLASS_NAME",hin);
	hin=NULL;
}




int gmain(void){
	if (KEY_DOWN(VK_ESCAPE) || KEY_DOWN(VK_SPACE)){
		PostMessage(hwnd, WM_DESTROY,0,0);
		return(0);
	}
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	glLoadIdentity();
	glTranslatef(-1.5f,0.0f,-6.0f);
	//glBindTexture(GL_TEXTURE_2D, texture[0]);
	glColor3f(1.0f,0.0f,0.0f);
	glBegin(GL_TRIANGLES);
		glVertex3f( 0.0f, 1.0f, 0.0f);
		glVertex3f(-1.0f,-1.0f, 0.0f);
		glVertex3f( 1.0f,-1.0f, 0.0f);
	glEnd();	

	//glTranslatef(3.0f,0.0f,0.0f);	
	return(1);
}



AUX_RGBImageRec *LoadBMP(char *filename){
	FILE *file;
	if(!(file=fopen("filename","r")))
		return(0);
	fclose(file);
	return auxDIBImageLoad(filename);
}

I don't know enough yet to debug

so could sombody please help me? thanks, Klaus ps. how do you do those scroll boxes around code? [edited by - neonoblivion on May 30, 2002 3:32:07 PM]

void ResizeWnd(int Width, int Height)
{
GLfloat fAspect;

if (!Height)
Height = 1;

glViewport(0, 0, Width, Height);

fAspect = (float)Width/(float)Height;

glMatrixMode(GL_PROJECTION);
glLoadIdentity();

gluPerspective(45.0, fAspect, 1.0, 400.0);

glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}

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