In the wxMaxima interface for Windows version 0.7.5 when you configure it to "Read file from command line" then double click a wxm file it loads the file for editing w/o executing any lines. That works ok, but if you try to exit wxMaxima before making any changes a message box comes up saying "Document not saved" even though it has not been changed yet. That is a small glitch, you can work around it by just saving it first but then the file last modified time and date get updated to the present time even though you have not changed anything.
Rich