Signal

GdkDragSurface::compute-size

since: 4.12

Declaration 

void
compute_size (
  GdkDragSurface* self,
  GdkDragSurfaceSize* size,
  gpointer user_data
)

Description [src]

Emitted when the size for the surface needs to be computed, when it is present.

This signal will normally be emitted during the native surface layout cycle when the surface size needs to be recomputed.

It is the responsibility of the drag surface user to handle this signal and compute the desired size of the surface, storing the computed size in the GdkDragSurfaceSize object that is passed to the signal handler, using gdk_drag_surface_size_set_size().

Failing to set a size so will result in an arbitrary size being used as a result.

Default handler:

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

Available since: 4.12

Parameters

size

Type: GdkDragSurfaceSize

The size of the drag surface.

The data is owned by the caller of the function.