Function

GtkTreeViewColumnDropFunc

Declaration

gboolean
(* GtkTreeViewColumnDropFunc) (
  GtkTreeView* tree_view,
  GtkTreeViewColumn* column,
  GtkTreeViewColumn* prev_column,
  GtkTreeViewColumn* next_column,
  gpointer data
)

Description [src]

Function type for determining whether column can be dropped in a particular spot (as determined by prev_column and next_column). In left to right locales, prev_column is on the left of the potential drop spot, and next_column is on the right. In right to left mode, this is reversed. This function should return TRUE if the spot is a valid drop spot. Please note that returning TRUE does not actually indicate that the column drop was made, but is meant only to indicate a possible drop spot to the user.

Parameters

`tree_view`	`GtkTreeView`
	A `GtkTreeView`
	The data is owned by the caller of the function.
`column`	`GtkTreeViewColumn`
	The `GtkTreeViewColumn` being dragged.
	The data is owned by the caller of the function.
`prev_column`	`GtkTreeViewColumn`
	A `GtkTreeViewColumn` on one side of `column`.
	The data is owned by the caller of the function.
`next_column`	`GtkTreeViewColumn`
	A `GtkTreeViewColumn` on the other side of `column`.
	The data is owned by the caller of the function.
`data`	`gpointer`
	User data.
	The argument can be `NULL`.
	The data is owned by the caller of the function.

Return value

Returns:	`gboolean`
	`TRUE`, if `column` can be dropped in this spot.