This function initiates a multi-directory selection operation by presenting a file chooser dialog to the user.
The file chooser will initially be opened in the directory propertyGtk.FileDialog:initial-folder.
The callback will be called when the dialog is dismissed. It should call gtk.file_dialog.FileDialog.selectMultipleFoldersFinish to obtain the result.
the parent gtk.window.Window
a gio.cancellable.Cancellable to cancel the operation
a callback to call when the operation is complete
This function initiates a multi-directory selection operation by presenting a file chooser dialog to the user.
The file chooser will initially be opened in the directory propertyGtk.FileDialog:initial-folder.
The callback will be called when the dialog is dismissed. It should call gtk.file_dialog.FileDialog.selectMultipleFoldersFinish to obtain the result.