QT : Help in constructing complex types for dbus

Thiago Macieira thiago at kde.org
Fri May 27 09:16:28 PDT 2011

On Friday, 27 de May de 2011 19:21:24 sangram.kumar.yerra at accenture.com wrote:
> Hello ,
>       Can anyone tell me how to make a function  call  with multiple out
> parameters and having complex data types  in QT
>             <method name="MyFunc">
>                         <arg direction="in"  type="(a( (ay) s ) q )"
> name="my_data" /> <arg direction="out"   type="y" name="no_of_data" /> <arg
> direction="out"  type="(i)" name="data_val" /> <annotation value="MY_DATA"
> name="com.trolltech.QtDBus.QtTypeName.In0"/> <annotation
> value="DATA_CONTENT" name="com.trolltech.QtDBus.QtTypeName.Out1"/>
> </method>
> I am not able to construct the complex type ="(a( (ay) s ) q )"

First of all, you need to get rid of the spaces. The type is "(a((ay)s)q)"

struct InnerInnerType
    QByteArray data;

struct InnerType
    InnerInnerType data;
    QString str;

struct OuterType
    QList<InnerType> list;
    ushort value;


Then write the streaming operators for all three types:

QDBusArgument &operator<<(QDBusArgument &arg, const Type &t);
const QDBusArgument &operator>>(const QDBusArgument &arg, Type &t);

Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
  Senior Product Manager - Nokia, Qt Development Frameworks
      PGP/GPG: 0x6EF45358; fingerprint:
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