For save dialog only: prompt for a confirmation if a file will be
overwritten.
@style{wxFD_FILE_MUST_EXIST}
- For open dialog only: the user may only select files that actually exist.
+ For open dialog only: the user may only select files that actually
+ exist. Notice that under OS X the file dialog with @c wxFD_OPEN
+ style always behaves as if this style was specified, because it is
+ impossible to choose a file that doesn't exist from a standard OS X
+ file dialog.
@style{wxFD_MULTIPLE}
For open dialog only: allows selecting multiple files.
@style{wxFD_CHANGE_DIR}