ReadProcessMemory() problem

[ALLERSLIT]

Hello, i wanted to get an idea of some basic memory editing so i thought writing a simple trainer for my favorite game would be a good idea. So i found out how to get the pointer, now when i use cheat engine it gives the correct value if i add the baseaddress + offset. But if i try that in my program it wont work for some reason.

			int offset = 0x804;
			int address = 0x818794;
			int totalhp = offset + address;
			int value;
			ReadProcessMemory(hProcess, (LPCVOID)totalhp, &value, sizeof(value), NULL );
			std::cout << value << std::endl;

value always returns zero for god knows what reason. Any idea what iam doing wrong?

[Richard Andrew x64]

How are you initializing hProcess?

[ALLERSLIT]

The problem is not the handle, the problem is the wrong value i get.

HWND hWnd = FindWindow(0, "AOEII");
if(hWnd == 0)
{
	std::cout << "Cant find handle." << std::endl;
	\_getch();
} 
else 
{
	DWORD proccess\_ID;
	GetWindowThreadProcessId(hWnd, &proccess\_ID);
	HANDLE hProcess = OpenProcess(PROCESS\_ALL\_ACCESS, FALSE, proccess\_ID);
	if(!hProcess)
	{ 
		std::cout << "Cant open process." << std::endl;
		\_getch();
	} 
	else 
	{
               Readprocessstuff...

[ALLERSLIT]

Well found the solution, not exactly sure why i have to do it this way but iam reading about it right now, just thought id post the solution before i forget about it.

			int offset = 0x804;
			int baseaddress;
			int value;
			ReadProcessMemory(hProcess, (LPCVOID)0x00818794, (LPVOID)&baseaddress, sizeof(value), NULL );
			ReadProcessMemory(hProcess, (LPCVOID)(baseaddress+offset), &value, sizeof(value), NULL );

Thanks for trying to help :)