Re: Simluating Keypresses

["Brian J. Tarricone" <bjt23 cornell edu>]

On 12/08/04 21:53, andrew gatt wrote:
> Hello,
>
> I'm very new to Gtk so please forgive me if this is an obvious question,
> i've done a lot of digging and can't find an answer. What i've got is a Gtk
> front end with other control threads running which process commands from
> other ports. I need to simulate key presses on the window from these other
> threads. For example a "move left" command on the serial port is received by
> my serial routine and sent to the Gtk main thread, that moves the focus
> left, one button, on the main window.
>
> What i've tried so far is:
>
> GdkEvent* manual_event;
>
> manual_event->type = GDK_KEY_PRESS;
> ((GdkEventKey*)manual_event)->keyval = GDK_Tab;
> ((GdkEventKey*)manual_event)->send_event = TRUE;    // Which i read shows
> that the event was synthesized by the application and not X windows.
>
> gtk_widget_event (window, manual_event);
>
> Which compiles fine, but seg faults. Is it something i'm not setting up
> properly?

that's because you're dereferencing a pointer to uninitialised memory.

you need to do something like:

GdkEventKey manual_event;
manual_event.type = GDK_KEY_PRESS;
manual_event.keyval = GDK_Tab;
manual_event.send_event = TRUE;
gtk_widget_event(window, (GdkEvent *)&manual_event);

note that i'm not sure that gtk_widget_event() is what you actually
want to do here, but your question ends up being a C programming question,
not a gtk question, so...

        -brian