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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