hmi_gtk module

Author:
Juan Carlos Orozco email: jorozco@acelab.com

Date: 15.08.2001

Changes Made: 

hmi_gtk module created.

Author:
Staedtler, Stefan e@mail: stefan.staedtler@siemens.com
Patz, Heiko      e@mail: heiko.patz@siemens.com

Date: 13.02.2003

Changes made: 

- Function: 
	label_widget()
	failure detected when label type is u32
	added snprintf() in switch-case-construct for u32_dt
	-> o.k.

- New Function for Scale Widgets (HScale, VScale)
	scale_widget()
	scale_widget_update()
	scale_widget_init()

- New Function for SpinButtons
	spin_button_widget()
	spin_button_widget_update()
	spin_button_widget_init()

- Function:
	parse_connection()
	added new Widget-Type GtkHScale, GtkVScale and GtkSpinButton

- Function:
	update_value()
	added new Widget-Type GtkHScale, GtkVScale and GtkSpinButton

- Function entry_widget rewritten (original is now entry_widget_org)

- New Function entry_widget_init (initialize Entry Widget text)

- Function:
	parse_connection()
	new function call entry_widget_init() in GTkEntry-Section

------------------------------------------------------------------------
Authors:
Staedtler, Stefan e@mail: stefan.staedtler@siemens.com
Patz, Heiko       e@mail: heiko.patz@siemens.com

Date: 13.03.2003

Changes made:

- Function: 
	progress_widget()
	Range is now limited by the widget settings. This is more
	flexible and the widget does the job in a better way.

- Function:
	exit_window()
	Exit window (== destroy_handler)
	This handler now only release the focus.

- New Function:
	delete_event()
	handler for "delete_events" (from window-manager, e.g. X-Button)
	This handler free the structures contained in the node
	and finally destroy the window. 
	The destroy-handler then calls exit_window().

- New Function:
	quit_handler()
	quit-Handler only for window "app1"
	Window "app1" must connect the signal delete_event with quit_handler.
	In matplc.conf you have to create the point "quit_app1" and assign it to
	plcshutdown.
	The quit-handler sets the point quit_app1 and free the structures
	contained in the node.

------------------------------------------------------------------------
Authors:
Staedtler, Stefan e@mail: stefan.staedtler@siemens.com
Patz, Heiko       e@mail: heiko.patz@siemens.com

Date: 02.04.2003

Changes made:

- New Widget type GtkPlotCanvas added
	Documentation: see manual

	
------------------------------------------------------------------------
Authors:
Staedtler, Stefan e@mail: stefan.staedtler@siemens.com
Patz, Heiko       e@mail: heiko.patz@siemens.com

Date: 07.07.2003

Changes made:

- GtkPlotCanvas:
	o) scrolling changed from continuous to stepwise.
	o) automatic scaling improved.
	o) new settings added.

- GtkLabel:
	o) more flexible outputformats via formatdefinition in matplc.conf.

- GnomePixmap:
	o) Multiple Pixmap-Support added.

------------------------------------------------------------------------
Authors:
Staedtler, Stefan e@mail: stefan.staedtler@siemens.com
Patz, Heiko       e@mail: heiko.patz@siemens.com

Date: 19.11.2003

- New Widget type GtkRadioButton
	Documentation: see manual

- New Widget type GtkCheckButton
	Documentation: see manual

- New Widget type GtkOptionMenu
	Documentation: see manual

- New Widget type GtkSocket
	Documentation: see manual


------------------------------------------------------------------------
Authors:
Staedtler, Stefan e@mail: stefan.staedtler@siemens.com
Patz, Heiko       e@mail: heiko.patz@siemens.com

Date: 27.11.2003

- Fixed problem when GtkPlug is destroyed
	socket_widget_init():
		added function gtk_widget_realize() before asking for id
	parse_connection():
		added verification if actual window is still there and has
		not been destroyed (GtkSocket can be destroyed from plugged
		modul)