The Launch_SelectFile() function displays an operating system dialog, in which you can select a launch file.
Launch_SelectFile(pathname)
• pathname – A returned string containing the generic pathname to the selected launch file.
A boolean indicating the result; true if the user selected a launch file, false if the user clicked Cancel.
The *.SET will appear in the File of type field, and all launch files in the current directory will be displayed in the dialog box.