Can internal flash of the camera Disable

The level itself is ok, though for me only as a guide if I reasonably straight Scan least. On photos in which you would notice that the photographer has the camera held wrong, you thank God yes when shooting a bit in front of the lens, after which you can shift the camera - Grid lines on the display goodness. A big drawback is the scale but with my EOS 700D, and determined in other cameras: the camera thinks it's a flash in the hot shoe, and therefore triggers in situations where they normally used the built-in flash, this just no longer !
In addition, the user manual in English, and probably not the only reason why something difficult to understand; the illustrations in the manual are in some cases a bit puzzling. 'm Still not sure if I have that thing now initialize properly or not.