Officially
I've asked this question and the answer is always the same: no, because Mac doesn't support them and so MaxGUI would no longer be cross-platform compatible if it were added.
Unofficially
In Windows, you can get an almost working model by specifying a window parent and using the WINDOW_CHILD (BETA) flag while creating the child window.
For best results, lots of people prefer using tabbed applications now rather than MDI, where each document is in its own tab and you can switch between them at the top of the main window...
Seb
I've asked this question and the answer is always the same: no, because Mac doesn't support them and so MaxGUI would no longer be cross-platform compatible if it were added.
Unofficially
In Windows, you can get an almost working model by specifying a window parent and using the WINDOW_CHILD (BETA) flag while creating the child window.
For best results, lots of people prefer using tabbed applications now rather than MDI, where each document is in its own tab and you can switch between them at the top of the main window...
Seb