Thread: HELP - Debugging EYES ARE SQUARE!

Hey could someone take a look at my code, Its just direct X, ive tried loads of stuff, Its probably somthin stupid as im not the best of programmers, anyways heres the link.....

www.btinternet.com/~ashley.canning/frodo.zip

if you manage to solve the error :-) I hope you can, then could you send it to
[email protected]

Sorry if its asking a bit much, if so Maybe you could tell me what part is wrong and ill change it :-)

Perhaps a hint as to what the program is meant to do, and what the error you are talking about is? I dont get any compile errors, just a couple of warnings, the resolution changes, screen clears and then it drops back to windows. I havent read your code properly yet but it doesnt look like it's supposed to do much more from it's length.

The warnings:
GameMain.cpp(26) : warning C4305: '=' : truncation from 'const long' to 'unsigned char'
GameMain.cpp(26) : warning C4309: '=' : truncation of constant value

The code:

Code:

#include "Globals.h"

int GameMain()
{
	HRESULT hret;
	memset(lpddsprimary,0,sizeof(LPDIRECTDRAWSURFACE4));

	if(KEYDOWN(VK_ESCAPE)) { PostQuitMessage(0); }

	CLEARMEM(ddsd);

	hret = lpddsback->Lock(NULL, &ddsd, DDLOCK_WAIT | DDLOCK_SURFACEMEMORYPTR, NULL);
	if(hret != DD_OK)
	{		
		ERR(hret);
		return 1;
	}

	UCHAR *videomem = (UCHAR*)ddsd.lpSurface;


	for(int x = 0; x < 500; x++)
	{
		for(int y = 0; y < 500; y++)
		{
	videomem[x + y * ddsd.lPitch] = _RGB(50,0,0); // warnings are on this line
		}
	}

	hret = lpddsback->Unlock(NULL);
	if(hret != DD_OK)
	{		
		ERR(hret);
		return 1;
	}

	hret = lpddsprimary->Flip(NULL,DDFLIP_WAIT);
	if(hret != DD_OK)
	{		
		ERR(hret);
		return 1;
	}

	return 0;
}

from what was posted it looks like its suposed to draw pixels. However it seems that the pixels are not being drawn. I had that problem (and am still having) when learning direct draw to so I fell your pain. That doesn't i have the energy to download ad unzip so do us all a favor okay.