Hi,
I saw that some people had the similar problem but coulnd't get it
fixed. Anyone got any ideas?
RvdKorput wrote:
> Hi,
>
> I'm currently working on a program for viewing object with openGL but
> im experiencing problems with the "on_key_press_event" on a
> Gtk::DrawingArea. I'm currently loading a window with glade with a
> HBox on it. From there on I create a Gtk::DrawingArea widget (the
> opengl viewport) and add it to the HBox, so only the HBox is loaded
> from glade.
>
> The problem is that my keyboard input doesn't reach the
> Gtk::DrawingArea. Other input like mouse movement and button press
> event, I can receive.
>
> Some example code:
>
> In the header file of the TGTKGLViewport (that inherets of
> Gtk::DrawingArea):
> protected:
> virtual void on_realize();
> virtual bool on_expose_event(GdkEventExpose* data);
> virtual bool on_button_press_event(GdkEventButton* eventData);
> virtual bool on_button_release_event(GdkEventButton* eventData);
> virtual bool on_motion_notify_event(GdkEventMotion* eventData);
> virtual bool on_key_press_event(GdkEventKey* eventData);
>
> In the CPP file
>
> TGTKGLViewport::TGTKGLViewport(uint width, uint height)
> : TGTKGLWidget(width, height)
> , m_Camera(NULL)
> {
> this->set_events(
> Gdk::BUTTON_PRESS_MASK | //mouse button down
> Gdk::BUTTON_RELEASE_MASK | //mouse button up
> Gdk::POINTER_MOTION_MASK); //mouse pointer move
> this->add_events(Gdk::KEY_PRESS_MASK); //Keyboard input
>
> this->set_flags(Gtk::CAN_FOCUS);
> }
>
> bool TGTKGLViewport::on_key_press_event(GdkEventKey* eventData)
> {
> OutputDebugString("Keyboard input viewport\n");
> return true;
> }
>
> I've got the feeling the window isn't passing the event to the
> TGTKGLViewport. but how can i reach that?
> I tried to add the TGTKViewport to the window manually but only get
> warning that it already has a parent.
>
> Thanks in advance,
>
> Roy van de Korput
>
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