On 11/22/2011 04:35 AM, bea....@nokia.com wrote: > Hi Harri, > > On 22/11/2011, at 3:49 AM, ext Harri Pasanen wrote: >> Chokes when it tries to index the guests property, spitting out a message: >> 'guests[1]' [undefined] is not an object. >> >> Should this work, or what am I missing? > > I can't reproduce this error with the built-in example - but, based on the > error, I'm guessing that in your code, the guests list hasn't actually been > populated somehow, so guests[1] isn't actually referencing a valid object. >
Ok, I'll try to boil it down to a small complete example that will either demonstrate the problem or show me the error of my ways. (Often it is the latter...) >> There is also some other underlying magic going on which is not explicit. >> >> http://developer.qt.nokia.com/doc/qt-4.7/declarative-tutorials-extending-chapter5-listproperties-piechart-h.html#id-746a8ac4-61d2-42f8-82d6-2c72cd6c26a0 >> >> comes up with some static method called append_slice to populate the >> list, but why does the birthday party example not feature it? > The BirthdayParty example just uses the simpler convenience constructor. > Generally you would want to use the constructor that accepts the append-type > function that will allow you to, for example, control the ownership of the > object that has been appended to the list. In the PieChart example, the > append_slice function also sets the parentItem of all append objects to be > the PieChart itself; this wouldn't be possible if the list had been created > with the convenience QDeclarativeListProperty constructor that doesn't accept > an append function. > > >> Btw, are the example and tutorial projects show in the documentation >> downloadable somewhere in compilable format? Cutting and pasting from >> the doc is not very tempting... >> Searching for the examples, at least the PieChart and BirthdayParty >> don't seem to be part of QtSDK examples. > > Yes, the paths to the examples are shown on the tutorial pages on > http://developer.qt.nokia.com/doc/qt-4.7/declarative-tutorials-extending-chapter5-listproperties.html > and http://developer.qt.nokia.com/doc/qt-4.7/qml-extending.html. That is, > the PieChart example is located under > examples/declarative/tutorials/extending/ and BirthdayParty is under > examples/declarative/cppextensions/referenceexamples. > Ok, I found the PieChart. BirthdayParty does not seem to be there though, there is no cppextensions subdirectory. /Harri _______________________________________________ Qt-qml mailing list Qt-qml@qt.nokia.com http://lists.qt.nokia.com/mailman/listinfo/qt-qml
