Make sure MOD_SHIFT, etc. have the right value
see http://pulkomandy.tk/projects/GrafX2/ticket/99
but the safest thing would be to rename MOD_SHIFT, etc. to a private name such as GFX2_MOD_SHIFT, etc.
see http://pulkomandy.tk/projects/GrafX2/ticket/99
but the safest thing would be to rename MOD_SHIFT, etc. to a private name such as GFX2_MOD_SHIFT, etc.