These functions are exactly like the corresponding libdialog functions, for the unsurprising reason that they need to do much the same as they would in libdialog.

init_dialog()

initialize the dialog library; start curses, allocate colors, clear the screen, allocate the helpline, and so on.

After init_dialog(), the screen will be cleared, set to the window color, and (invisibly) broken up into the form window and a one-line helpline window at the bottom of the screen.

end_dialog()

Close up shop and shut curses down.

use_helpline(message)

Set the helpline to the given message.

get_helpline()

Return a pointer to the existing helpline.

restore_helpline(message)

I'm not sure what this does; it's aliased to use_helpline() right now.

strwidth(message)

Return how many columns wide a message is.

strdepth(message)

strheight(message)

Return how many rows deep a messages is.

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