prepare (
  GtkDragSource* self,
  gdouble x,
  gdouble y,
  gpointer user_data

Description [src]

Emitted when a drag is about to be initiated.

It returns the GdkContentProvider to use for the drag that is about to start. The default handler for this signal returns the value of the GtkDragSource:content property, so if you set up that property ahead of time, you don’t need to connect to this signal.

Default handler:

The default handler is called after the handlers added via g_signal_connect().


x gdouble

The X coordinate of the drag starting point.

y gdouble

The Y coordinate fo the drag starting point.

Return value

Returns: GdkContentProvider

A GdkContentProvider

 The caller of the function takes ownership of the data, and is responsible for freeing it.
 The return value can be NULL.