C++ Help

[Codebyte]

Alright so here it goes... I've been experimenting with creating macros based on pixel color changes... I'm not understanding why GetPixel() is returning 0 constantly when I have the target game open... I can see the cursor coordinates, but not the color value... What am I doing wrong? I need to find the color of the pixel underneath the cursor while in a full screen game window.

Here is my example I wrote in a couple minutes to output coordinates and color:

Code: (c++)

//------------------------------------------------------------------------------
#include <windows.h>
#include <iostream>
//------------------------------------------------------------------------------
using namespace std;
//------------------------------------------------------------------------------
int main(void)
{
	HWND wowHandle = FindWindow(NULL, "World of Warcraft");
	if(!wowHandle)
	{
		cout << "WoW is not open atm..." << endl;
		system("pause");
		return 0;
	}
	else
	{
		cout << "WoW is OPEN..." << endl;
		ShowWindow(wowHandle, SW_SHOWNORMAL);
		SetForegroundWindow(wowHandle);	
		
		while(1)
		{
			POINT cursorPoint;
			GetCursorPos(&cursorPoint);
			COLORREF color = GetPixel(GetDC(wowHandle), cursorPoint.x, cursorPoint.y);
			system("cls");
			cout << "(" << cursorPoint.x << ", " << cursorPoint.y << ")" << endl;
			cout << "COLOR: " << color;
		}	
	}
	
}
//------------------------------------------------------------------------------

it's probably sloppy... don't hate on the 5 minute "im at work and in a hurry on my break" coding...

[Codebyte]

nevermind... after doing some research I figured out that gameguard blocks the API calls and filters what is returned... this would make sense as to why its returning 0 for a color call...

[f0dder]

nevermind... after doing some research I figured out that gameguard blocks the API calls and filters what is returned... this would make sense as to why its returning 0 for a color call...

I'd be a bit surprised if GetPixel worked, GameGuard/whatever or not, as soon as you're dealing with Direct3D (and possibly even DirectDraw) accelerated games.