Irgendwie scheint es irgendwie zufällige Zeichen in meine Console zu schreiben (Sobald ich etwas reinschreibe), naja ich mache mal einen Screenshot, der erklärt es bestimmt besser:

http://img3.imagebanana.com/img/6x89lqzm/thumb/debugconsole.JPG

Achja, hier der Code:

HANDLE		hDebugConsole;	
DWORD		dw_msg_size;
void BuildDebugConsole()
{
	AllocConsole();
	hDebugConsole	= (HANDLE)GetStdHandle(STD_OUTPUT_HANDLE);
	SetConsoleTitle("DebugConsole");
}
void __cdecl add_log(const char * fmt, ...)
{
#ifdef DEBUG
	va_list va_alist;
	char logbuf[256];

	va_start (va_alist, fmt);
	vsnprintf_s (logbuf+strlen(logbuf), sizeof(logbuf) - strlen(logbuf),100, fmt, va_alist);
	va_end (va_alist);

        WriteConsole(hDebugConsole,logbuf, strlen(logbuf),&dw_msg_size, NULL);
	WriteConsole(hDebugConsole, "\n",  strlen("\n"),  &dw_msg_size, NULL );
#endif
}

Ich benutze es wie folgt..

add_log( "m_pClient = [0x%X]", m_pClient );
    add_log( "m_pEngine = [0x%X]", m_pEngine );
	add_log( "m_pSurface = [0x%X]", m_pSurface );
	add_log( "m_pMatSystemSurface = [0x%X]", m_pMatSystemSurface );
	add_log( "m_pEntList = [0x%X]", m_pEntList );
	add_log( "m_pRender = [0x%X]", m_pRender );
	add_log( "m_pMaterialSystem = [0x%X]", m_pMaterialSystem );
	add_log( "m_pModelInfo = [0x%X]", m_pModelInfo );
	add_log( "m_pDebugOverlay = [0x%X]", m_pDebugOverlay );

vsnprintf_s (logbuf+strlen(logbuf), sizeof(logbuf) - strlen(logbuf),100, fmt, va_alist);

Dankeschön.