What is wrong with my code?

-Visual Studio 2003
-Win32 Console Project
-C++ Source File
-HAPI is the API
-DirectX 9.0 SDK

Create function to clear screen, create function to clear pixel on screen to arbitrary colour (star-filled background)

Code:

#include <HAPI_lib.h>
#include <stdlib.h>

typedef unsigned long int DWORD;

void clearScreen ( BYTE, BYTE, BYTE, int, int );
void setPixel ( BYTE *, int, int, int, BYTE, BYTE, BYTE );

void main()
{
     int screenWidth=400;
     int screenHeight=300;

     if (!HAPI_Initialise(&screenWidth,&screenHeight))
         return;

   while(HAPI_Update())
     { 
		int NumberOfStars;
		int rand();
	
		BYTE red = 255;
		BYTE green = 255;
		BYTE blue = 0;
		BYTE *screen;
		
		clearScreen ( red, green, blue, screenWidth, screenHeight );
	 
		for(int i = 0; i < NumberOfStars; i++)
		{
			int x = rand() % screenWidth;
			int y = rand() % screenHeight;

			setPixel( screen, x, y, screenWidth, red, green, blue );
		}

	 }

   return;
}

void clearScreen (BYTE r, BYTE g, BYTE b, int screenWidth, int screenHeight )
{
	BYTE *screen = HAPI_GetScreenPtr();
	
	DWORD colour = ( r << 24 | g << 16 | b << 8 );
	DWORD *Ptr = ( DWORD * ) screen; 
	
	for ( int y = 0; y < screenWidth * screenHeight; y++ )
	{
		memcpy ( Ptr, &colour, 4 );
		Ptr += 4;
	}
}

void setPixel ( BYTE *destinationPtr, int x, int y, int screenWidth, BYTE r, BYTE g, BYTE b )
{
	int offset = ( x+y*screenWidth )*4;
	destinationPtr += offset;
}

apparently, in the function body of clearScreen, the HAPI_GetScreenPtr(); comes up with the build error 'identifier not found, even with argument dependent look-up'

im stumped, anyone got any ideas?

if you need wana download the API and have a go click here and go to HAPI. remember you need DirectX installed.

The project is under Milestone 1.

<Mod edit - You'll get more help if you ask nicely. I've edited your thread title.>

Did you add the dx and hapi libs to yor project so that they are linked?

i agree recheck then try again might work.