GUI – Current Directory

While the application is running, it will remember the directory of the last file loaded so when the open file dialog is displayed again, that directory will be the starting directory.  This application's current working directory is updated by the open file dialog after a file is selected.  A "." for the current directory is used as the starting directory passed to the open file dialog box, so when the application is restarted, the current directory starts back to where the application was started from.  The application should remember the last directory when restarted.

To have the application remember the last directory, a new current directory member variable was added to the MainWindow class.  After a new file is loaded from the Open menu action, the directory of the file path is saved in this variable.  This variable is then saved as part of the application settings and restored when the application is started.

As was done for the restore and save settings for the RecentFiles source file, the names of the settings were put into constant character strings so that the strings are not specified in two different places (the restore and save functions) to prevent the possibility of a mistake in the name between the two functions, which would cause a setting to not be restored properly.

[commit 04c28a8252]