FileDialog.selectFolder

void selectFolder(gtk.window.Window parent =  null,  gio.cancellable.Cancellable cancellable =  null,  gio.types.AsyncReadyCallback callback =  null)

This function initiates a directory selection operation by presenting a file chooser dialog to the user.

If you pass initial_folder, the file chooser will initially be opened in the parent directory of that folder, otherwise, it will be in the directory gtk.file_dialog.FileDialog.initialFolder.

The callback will be called when the dialog is dismissed. It should call gtk.file_dialog.FileDialog.selectFolderFinish to obtain the result.

Parameters

`parent`	the parent gtk.window.Window
`cancellable`	a gio.cancellable.Cancellable to cancel the operation
`callback`	a callback to call when the operation is complete