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GtkTreeView drag-and-dropGtkTreeView drag-and-drop — Interfaces for drag-and-drop support in GtkTreeView |
GTK+ supports Drag-and-Drop in tree views with a high-level and a low-level API.
The low-level API consists of the GTK+ DND API, augmented by some treeview
utility functions: gtk_tree_view_set_drag_dest_row(),
gtk_tree_view_get_drag_dest_row(), gtk_tree_view_get_dest_row_at_pos(),
gtk_tree_view_create_row_drag_icon(), gtk_tree_set_row_drag_data() and
gtk_tree_get_row_drag_data(). This API leaves a lot of flexibility, but
nothing is done automatically, and implementing advanced features like
hover-to-open-rows or autoscrolling on top of this API is a lot of work.
On the other hand, if you write to the high-level API, then all the bookkeeping of rows is done for you, as well as things like hover-to-open and auto-scroll, but your models have to implement the GtkTreeDragSource and GtkTreeDragDest interfaces.