For plug-in developers this id should be set to 0. Basically, the
main 3ds Max help file contains help tags that are tied to various
parts of the 3ds Max UI, allowing the right help page to come up
when UI help is requested. In particular, if you press the ? button
on the toolbar, then press another toolbar button, you'll get help
on that button's functionality. This is because internally pressing
the button yields a help ID that indexes into the help file. But
since the same help ID must be compiled into the help file and into
MAX, and since the main 3ds Max help file can not be rebuilt by
developers, they cannot use this functionality.
int w
The width of the button image.
int h
The height of the button image.
int orient;
The orientation of the item. One of the following values: