g_ signal _emit () void g_ signal _emit (gpointer instance, guint signal_id, GQuark detail, …) Emits a signal. Note that g_ signal _emit() resets the return value to the default if no handlers are connected, in contrast to g_signal_emitv().
I have a gtk_event_box and I want to cause it to emit a enter_notify_event when I want it to. What I tried (R GTK binding code): on_enter = function (…) {TRUE} w = gtkWindow () ebx = gtkEventBox () gtkContainerAdd (w, ebx) gtkWidgetAddEvents (ebx, GdkEventMask [enter-notify-mask]) gSignalConnect (ebx, enter-notify-event, on_enter), Emission hooks are used for example to get all mouse_clicked emissions in an application to be able to emit the small mouse click sound. Emission hooks are connected with g_ signal _add_emission_hook and removed with g_ signal _remove_emission_hook .
The most basic use of signals is to implement event notification. For example , given a ViewerFile object with a write method, a signal could be emitted whenever the file is changed using that method. The code below shows how the user can connect a callback to the changed signal . 1 2 3 4 5. file = g_object_new (VIEWER_FILE_TYPE, NULL), Action signals are signals that may freely be emitted on alive objects from user code via g_ signal _emit() and friends, without the need of being embedded into extra code that performs pre or post emission adjustments on the object. They can also be thought of as object methods which can be called generically by third-party code.
Signals: GObject Reference Manual, Signals: GObject Reference Manual, Signals: GObject Reference Manual, For example , the add signal from GtkContainer… If you don’t have a detail, just leave it off. (No ::) But you cannot emit the add signal from GtkContainer using g_ signal _emit_by_name().
For example , in the open source modemmanager, there is a function called g_signal_emit (self, signals[SIGNAL_QUALITY], 0, quality), where object: self is a modemclass. If I write my own applet, how can I set g_signal_connect with right Object of Modem? I mean how can I get the right object pointer of Modem for the signal to be connected?
