I fixed the problem myself. Solution(for newbies out there):
signal_key_press_event().connect(sigc::mem_fun(*this,&MyClass::key_pressed),false);
Having false at the end says that default handler should handle all the events key_pressed event didn't handle.
Process the events captured in key_pressed method as required and return a true or false.
Returning true from key_pressed method says key_pressed method handled processing of the event.
Returning false says key_pressed method didn't handle the event, default handler should handle the event.
Thanks
Sirisha
-----Original Message-----
From: gtkmm-list-bounces gnome org on behalf of Sirisha Muppavarapu
Sent: Wed 2/21/2007 10:52 AM
To: gtkmm-list gnome org
Subject: Capture all key press events
Hi All
I want to capture all the keys pressed on the keyboard before
sending the data to Gtk::Entry field.
right now, i am doing this:
signal_key_press_event().connect(sigc::mem_fun(*this,
&MyClass::key_pressed));
When the focus is on the Gtk::Entry field, this method captures non
alphanumeric-special characters such as F1-F12,Shift,Cntrl. I would like
to capture all the keys of the keyboard before they are sent to the
Entry field.
Below is the code snippet. All ur inputs are highly appreciated.
Thanks
Sirisha
MyClass.h
-----------
class MyClass :: public Gtk::Window {
public:
MyClass();
~MyClass();
bool on_key_pressed(GdkEventKey *event);
bool getBuffer(GdkEventKey *event);
protected:
Gtk::Entry m_pId;
};
MyClass.cpp
-------------
MyClass ::MyClass() {
signal_key_press_event().connect(sigc::mem_fun(*this,
&MyClass::key_pressed));
show_all_children();
}
bool MyClass::key_pressed(GdkEventKey *event)
{
bool valid = false;
if(!event)
valid = false;
switch (event->keyval)
{
case F1:
F1Method();
break;
case F2:
F2Method();
break;
case F3:
F3Method();
break;
case F4:
F4Method();
break;
default:
valid = getBuffer(event);
break;
}
valid = true;
}
bool MyClass::getBuffer(GdkEventKey *event)
{
static eventCnt=0;
static char buffer[256];
buffer[evenCnt++]=char(event->keycode);
//do something with event and buffer
return true;
}