Hi, Thanks for the prompt response. My comments are in-line. Your help is appreciated. Thanks - Narayanan -----Original Message----- From: Anupama Chandwani [mailto:anupama.chandwani@xxxxxxxxx] Sent: Wednesday, August 08, 2007 2:00 AM To: Subramaniam Narayanan Cc: gtk-list@xxxxxxxxx Subject: RE: Gtk Event flow Hi Narayanan, Your understanding about the flow of events in directfb is right. However, ill have to know some specifications about your need before helping. 1. What is the device from which you are trying to recieve events? - This is our proprietery development platform running linux. The board has keys for entering user input. The device driver receives the keypress events and passes it up to the application layer. At the application layer, I have a callback function which is called every time a key is pressed. 2. On what pipe does it write these events for DirectFB? - The events are written to /dev/usr_input. The callback event provides the keypad details in the function parameters. 3. You cant use existing input handlers because the pipe they open dont get your device events? - I am not using the existing input handlers. I am still using the inputhandlers/keyboard module for hookup up the device events at the DirectFB layer. I know I am receiving these events. I think I am also using the dfb_input_dispatch function to send the event back up. However, this event is not going to the GTK layer. If there is any other place I should add some print messages let me know. 4. Does your callback get events? Add a printf there & c if at all its getting stuff. - I have printfs at the callback function. I can receive all the events from the keys on the device. The trick is to send these events back up to GTK for processing so that the UI can be updated appropriately. We are currently using one of the demo applications(buttonbox) that comes with the GTK download. -- Anupama Chandwani Celunite Soft Systems Middleware Team Pune, INDIA - 411 00 Tel: 020-40179797 (ext# 776) Fax: 020- 40046440 _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list
