FMSLogo Code

Make the bad input tests expect specific errors to be thrown, rather than accepting any error.

Fix bug #1448107; SETACTIVEAREA now throws a bad input error when given an impossible range and no longer displays a dialog box.

The error is currently unrecoverable. I'll open a new bug to track that problem.

Add a regression test for bug #2452240 and a few other tests.

Fix bug #2452240; COPYDEF now updates the TO line of new procedure.

This fix was copied over from UCBLogo 5.5.

Added comments to sudoku.

Added comments

Fix bug #2452726; BITLOAD, BITSAVE, BITLOADSIZE, GIFLOAD, GIFSAVE, and GIFSIZE now throw image-specific errors and no longer display dialog boxes when given bad input.

Note that the helper routines which are called for GUI actions and logo instructions had to be reworked to return error codes so that the caller could decide if they wanted to throw a logo error or display a dialog box.

Tighten up the bad input tests to expect specific errors to be thrown, instead of expecting any error.

Add some bad input tests for BITLOAD and BITSAVE.

Fix an error in the sample code for SCROLLBARCREATE. This error was reported by Daniel Ajoy.