[Qt-interest] QVariant::type() usage for custom QVariant types

Thiago Macieira thiago at kde.org
Thu Jul 28 16:34:57 CEST 2011


On Thursday, 28 de July de 2011 16:21:35 Eckhard Jokisch wrote:
> Thanks for the relply.
> I already tried that one - but how do I define the number that
> userType() shall return? there is not something like
> 
> variant.setUserType(int type,QString typeName)?
> 
> I need to know at compiletime what number will be returned  - otherwise
> I can't use "switch".

You don't define it.

The number is computed at runtime when you register the type (via 
qRegisterMetaType). The value returned from the registration is the ID you 
have to use.

You can also get the same ID by calling qMetaTypeId<Type>().

So: you can't use a switch.

-- 
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
      PGP/GPG: 0x6EF45358; fingerprint:
      E067 918B B660 DBD1 105C  966C 33F5 F005 6EF4 5358
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 190 bytes
Desc: This is a digitally signed message part.
Url : http://lists.qt-project.org/pipermail/qt-interest-old/attachments/20110728/a65663be/attachment.bin 


More information about the Qt-interest-old mailing list