Method

GtkWidgetpick

Declaration [src]

GtkWidget*
gtk_widget_pick (
  GtkWidget* widget,
  double x,
  double y,
  GtkPickFlags flags
)

Description [src]

Finds the descendant of widget closest to the point (x, y).

The point must be given in widget coordinates, so (0, 0) is assumed to be the top left of widgets content area.

Usually widgets will return NULL if the given coordinate is not contained in widget checked via gtk_widget_contains(). Otherwise they will recursively try to find a child that does not return NULL. Widgets are however free to customize their picking algorithm.

This function is used on the toplevel to determine the widget below the mouse cursor for purposes of hover highlighting and delivering events.

Parameters

x double
 

X coordinate to test, relative to widgets origin.

y double
 

Y coordinate to test, relative to widgets origin.

flags GtkPickFlags
 

Flags to influence what is picked.

Return value

Returns: GtkWidget
 

The widget descendant at the given point.

 The data is owned by the instance.
 The return value can be NULL.