What kind of hash function can give me a 32 bit value from a string?

I'm using the QT framework so if there is something like开发者_Python百科 this implemented in that, I would use it, but I couldn't find it.

I would like to get random color values for variable length strings.

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If you include <QHash>, then you get overloads of the function qHash(), one of which is:

uint qHash(const QString & key)