How to convert TText* to descriptor which can be used in gc.DrawText()

[cl_fragen]

How does one convert TText* to descriptor which can be used in gc.DrawText()?

[OSXDev]

Like this:

TText *blah = (unsigned char *) "blah";
TInt len = User::StringLength(blah);
gc.DrawText(TPtr(blah, len, len), TRect(TPoint(10, 0), TSize(100, 20)), 20, CGraphicsContext::ELeft, 0);


or, if your TText* is a C-style zero terminated string:

TText *blah;
gc.DrawText(TPtrC(blah), ...);