Signal
GtkWidget::visibility-notify-event
Declaration
gboolean
visibility_notify_event (
GtkWidget* self,
GdkEventVisibility event,
gpointer user_data
)
Description [src]
The ::visibility-notify-event will be emitted when the widget
‘s
window is obscured or unobscured.
To receive this signal the GdkWindow
associated to the widget needs
to enable the #GDK_VISIBILITY_NOTIFY_MASK mask.
Default handler: | The default handler is called after the handlers added via |
Deprecated since: | 3.12 |
Modern composited windowing systems with pervasive transparency make it impossible to track the visibility of a window reliably, so this signal can not be guaranteed to provide useful information. |
Parameters
event |
GdkEventVisibility |
The |