Please find the attached patch to fix the RM #1789 Column width of data output panel should fit to data (as pgAdmin III).
This doesn't seem to work as expected:
1) The columns are resized, but equally. For example, given a query of "SELECT * FROM pg_description", I would expect the first 3 columns to be roughly the size they are without the patch, and the 4th column to be much wider (in the ticket I suggested the width of the content, up to a maximum of 33% of the width of the container).
2) After executing a second query (which works as expected), further queries fail to update the resultset. I was selecting from pg_class, pg_attribute and pg_description, and repeatedly found (no matter what order I queried each table), only the first two queries returned the expected results. The third and subsequent always re-displayed the results of the second query. Reverting the patch caused this issue to go away.