is64bit.cpp

BOOL is64bit=FALSE;

BOOL is64BitProcess()
{
	HANDLE procImageFile;
	IMAGE_DOS_HEADER dosHdr;
	IMAGE_NT_HEADERS ntHdr;
	DWORD read;
	HMODULE mod;
	wchar_t fname[MAX_PATH] = { 0 };

	mod = GetModuleHandle(NULL);

	GetModuleFileNameW(mod, fname, MAX_PATH);

	procImageFile = CreateFile((LPCWSTR)fname, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);

	if (procImageFile == INVALID_HANDLE_VALUE)
		return FALSE;

	ReadFile(procImageFile, &dosHdr, sizeof(IMAGE_DOS_HEADER), &read, NULL);

	SetFilePointer(procImageFile, dosHdr.e_lfanew, NULL, FILE_BEGIN);

	ReadFile(procImageFile, &ntHdr, sizeof(IMAGE_NT_HEADERS), &read, NULL);

	CloseHandle(procImageFile);

	is64bit = ntHdr.FileHeader.Machine == IMAGE_FILE_MACHINE_AMD64;

	return is64bit;
}