kio_mhtml: RFC2047 decoder

[Daniel Teske]

>tmpIn=(const char *)encodedText;
>// tmpIn is QCString and encodedText is QString
>  
>
The encodedText is converted to const char * by calling 
QString::operator const char*(), there is a QCString::operator = () 
which takes a const char.


>QTextCodec *codec = QTextCodec::codecForName(charset);
>// charset is QString
>  
>
The charset is automatically converted to const char * by calling 
*QString::**operator const char ** 
<http://doc.trolltech.com/3.3/qstring.html#operator-const-char-*> () const

If C++ detects a mismatch between the types of parameter you supplied 
and the type the function it will at most call one function to convert 
between them.
Apart from operator  type conversions, C++ will use any non explicit one 
parameter constructor.
(This is the reason why one parameter constructors should be always 
explicit.)


daniel