amigadave: links

2010-04-15T11:28:41Z

links

← Older revision		Revision as of 11:28, 15 April 2010
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	== Service ==		== Service ==
-	The com.nokia.dlh.service file defines the D-Bus service provided by the Qt4 application:	+	The com.nokia.dlh.service file defines the D-Bus service provided by the [[Qt-Maemo\|Qt4]] application:

	[D-BUS Service]		[D-BUS Service]

dneary: Qt4 And Hildon Home Widget Interaction moved to Qt4 and Hildon home widget interaction

2010-02-05T10:41:53Z

Qt4 And Hildon Home Widget Interaction moved to Qt4 and Hildon home widget interaction

← Older revision

Revision as of 10:41, 5 February 2010

torshind: Added categories

2010-02-04T22:43:06Z

Added categories

← Older revision		Revision as of 22:43, 4 February 2010
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	That's all!		That's all!
		+
		+	[[Category:Development]]
		+	[[Category:Qt]]

torshind: Qt4 And Hildon Home Widget Interaction

2010-02-04T22:33:08Z

Qt4 And Hildon Home Widget Interaction

New page

The code in this wiki page is taken from the [http://maemo.org/packages/view/dlh/ dlh application] and the [http://maemo.org/packages/view/dlh-widget/ dlh widget]. Since it is FOSS, the source code is available for anyone to adapt freely.

== Service ==
The com.nokia.dlh.service file defines the D-Bus service provided by the Qt4 application:

[D-BUS Service]
Name=com.nokia.dlh
Exec=/opt/maemo/usr/bin/dlh

There's a reference to this service in the dlh.desktop file too:
X-Osso-Service=com.nokia.dlh

== Application ==

In the class definition of the objects which will interact with the home widget you need the Q_CLASSINFO macro:

class Widget : public QWidget
{
Q_OBJECT
Q_CLASSINFO("D-Bus Interface", "com.nokia.dlh")
[...]

The slots have the same name of the D-Bus messages; Q_NOREPLY mark a method to be called and not wait for it to finish processing before returning (see Qt docs):

Q_NOREPLY void CallStartDialog();

The class constructor contains the service and the object registration:

QDBusConnection::sessionBus().registerService("com.nokia.dlh");
QDBusConnection::sessionBus().registerObject("/com/nokia/dlh",this, QDBusConnection::ExportAllContents);

== Home Widget ==

Some defines:

#define DLH_SERVICE "com.nokia.dlh"
#define DLH_OBJECT "/com/nokia/dlh"
#define DLH_IFACE "com.nokia.dlh"

In the init function you have to initialize the osso library (see [http://maemo.org/api_refs/5.0/5.0-final/libosso/ libosso docs]):

osso_context = osso_initialize ("com.nokia.dlh-widget", "0.1", 0, NULL);

When you want to execute the Qt object's slot ''CallStartDialog'' from the home widget you will use the following instruction:

osso_rpc_run(osso_context,
DLH_SERVICE,
DLH_OBJECT,
DLH_IFACE,
"CallStartDialog", NULL, DBUS_TYPE_INVALID);

That's all!

Qt4 and Hildon home widget interaction - Revision history

amigadave: links

dneary: Qt4 And Hildon Home Widget Interaction moved to Qt4 and Hildon home widget interaction

torshind: Added categories

torshind: Qt4 And Hildon Home Widget Interaction