Re: Simple Gtk app.

[Jose Eusebio Roza Pando <jeroza alu uah es>]

To interpret the keystrokes you can use the code shown below.
I do not know the way to move the pixmap in gtk, but i know
that is possible with gtkextra lib. You must create a canvas
and you must insert inside a child (a pixmap for example) and
move it easily.
    Eusebio
The code was generated by Carlos Pereira in other mail:

These examples should answer your question.
Carlos

------------monitor events----------------
gtk_widget_set[add]_events (GTK_WIDGET (window), GDK_EXPOSURE_MASK |
GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK |
GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK);

--------connect-------------
gtk_signal_connect(GTK_OBJECT (window), "key_press_event",
                   GTK_SIGNAL_FUNC(app_gtk_handle_key_press), data);

--------callback---------------
#include <gdk/gdkkeysyms.h>

gint app_gtk_handle_key_press (GtkWidget *widget, GdkEventKey *event,
gpointer data)
{
switch (event->keyval)
  {
  case GDK_Escape:

  case GDK_F2:

  case GDK_F3:

  case GDK_Page_Down:
  }

/* prevent the default handler from being run */
gtk_signal_emit_stop_by_name (GTK_OBJECT(widget),"key_press_event");

return TRUE;
}

Mark Hannah escribió:

> Hi,
>     I'm having problems writing a simple Gtk app.
>
> What I want to do is open a window and place a pixmap
> image in the window. I would then like to use the
> keyboard arrow keys to move the image around the
> window.
>
> I can get as far as displaying thr pixmap in the
> window, but I do not know how to capture and interpret
> the keystrokes or move the pixmap position.
>
> Can anyone help?
>
> Many thanks,
> Mark.
>
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