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So in 4.1 we used rtti(), now we use type(). The docs say that the custom values need to be greater than 0x80000000 which, when printed shows up as -2147483600 on my system (Fedora 5). Since Im using this as an array offset its obviously blowing up. My question is, how do I correctly use this? Im confused as to why the number is not what I expected. If Im somehow supposed to use the qgraphicsitem_cast() call, can someone explain how? Im lost with this one. Thanks Jeff -- [ signature omitted ]
On Monday 28 August 2006 23:54, Jeff Lacki wrote: > So in 4.1 we used rtti(), now we use type(). The docs say that > the custom values need to be greater than 0x80000000 which, > when printed shows up as -2147483600 on my system (Fedora 5). > > Since Im using this as an array offset its obviously blowing up. > My question is, how do I correctly use this? Im confused as to > why the number is not what I expected. Since all values must be greater than 0x80000000, you should be able to use it as an index by unsetting the MSB (i.e. 0x80000000 & 0x7fffffff). This way you should get a positive integer. Alternatively, cast these to unsigned. It might also be wise to use a QMap with the type() values as a key instead of an array indexed by them; I suspect it's more memory efficient. > If Im somehow supposed to use the qgraphicsitem_cast() call, > can someone explain how? Im lost with this one. Sorry, I can't comment on this part :-(. > Thanks > Jeff > > > -- > To unsubscribe - send a mail to qt-interest-request@xxxxxxxxxxxxx with > "unsubscribe" in the subject or the body. List archive and information: > http://lists.trolltech.com/qt-interest/ Best, Marc -- [ signature omitted ]
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Jeff Lacki wrote: > So in 4.1 we used rtti(), now we use type(). The docs say that > the custom values need to be greater than 0x80000000 which, > when printed shows up as -2147483600 on my system (Fedora 5). This has changed since the TP; the value is now 65535. You can use 65535 with the TP as well. Andreas -- [ signature omitted ]