[Qt-interest] Build Error with Q_PROPERTY() READ method ; How to invoke a Q_PROPERTY's READ only method

[Santhosh Y]

Hi,

I have implemented RenewIACallBack() in my class.

But the problem was that as you said, I need to call with 'renew' and 
not with 'RenewIACallBack'

Thanks a lot

On 7/28/2010 2:06 PM, unimd at web.de wrote:
> Have you implemented your read-method RenewIACallBack() in your class 
> NewGUICOMObj?
> Here you can find a very good explanation how to use properties: 
> http://doc.trolltech.com/4.6.2/properties.html
>
> Furthermore if you want to use your defined property in the code you 
> should call it by its name which is 'renew' in your case.
> I hope that helps...
> Cheers.
>
>     ------------------------------------------------------------------------
>     *Von:* Santhosh Y <santhosh at softjin.com>
>     *Gesendet:* 28.07.2010 09:59:18
>     *An:* "qt-interest at trolltech.com" <qt-interest at trolltech.com>
>     *Betreff:* [Qt-interest] Build Error with Q_PROPERTY() READ method
>     ; How to invoke a Q_PROPERTY's READ only method
>
>     Hi,
>
>     Please see the following class, from which I am trying to define a
>     Q_PROPERTY,  method which is a READ method.
>     ///////////// Issue 1 ///////////////////
>     class NewGUICOMObj : public QObject
>     {
>         Q_OBJECT
>
>             Q_PROPERTY(bool RenewIACallBack  READ RenewIACallBack)
>
>         public:
>                 ............................
>     }
>     *1>midl\oleaut32.dll : error MIDL2020 : error generating type
>     library : SetFuncAndParamNames failed : RenewIACallBack (0x8002802C)*
>
>
>
>     /////////////The above issue will go,  If I do the following 
>     ///////////////////
>
>     class NewGUICOMObj : public QObject
>     {
>         Q_OBJECT
>
>             Q_PROPERTY(bool renew  READ RenewIACallBack)
>
>         public:
>                 ............................
>     }
>
>     But with this change I am not able to make use of this READ
>     property, which I explained in the below Issue 2.
>
>     ///////////// Issue 2 ///////////////////
>     This code, is to invoke COM object and call an interface which is
>     defined using Q_PROPERTY.
>
>        HRESULT hres =
>     CoCreateInstance(QUuid("{084EF014-6C9B-4d50-8756-263CDAC6DE4B}"),
>     // NewGUICOMObj Class ID ==>CLSID
>                     0, CLSCTX_SERVER, IID_IUnknown, (LPVOID*)&ptr);
>
>             if (hres == S_OK && ptr !=NULL ) { //success
>
>                  //Creating a QAxObject that wraps the COM object
>     referenced by IUnknown.
>                 QAxObject* comObj= new QAxObject (ptr);
>
>     *            comObj->property("RenewIACallBack");* //Why would
>     this fail?, Is it not the correct way of invoking READ only type
>     Q_PROPERTY on QObject.
>         } else { //failure
>         }
>
>
>     Thanks in advance, if some body helps in this regard.
>     I am struck and dont know how to solve this!
>
>     -- 
>     ----------------------------------------------------
>     Y Santhosh Kumar -
>     Senior Software Engineer,
>     SoftJin Technologies Pvt Ltd,
>     www.softjin.com
>     ----------------------------------------------------
>
>
>
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-- 
----------------------------------------------------
Y Santhosh Kumar -
Senior Software Engineer,
SoftJin Technologies Pvt Ltd,
www.softjin.com
----------------------------------------------------



Business Disclaimer
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may  contain confidential,  proprietary or legally  privileged  information.
If  you  are  not  the  intended recipient please be advised that you have
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immediately  delete it  and all copies of it from your system, destroy any
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