* Using multiple base classes with g++
@ 2001-03-15 2:20 Sven Heinzel
2001-03-15 14:06 ` Alexandre Oliva
0 siblings, 1 reply; 2+ messages in thread
From: Sven Heinzel @ 2001-03-15 2:20 UTC (permalink / raw)
To: gcc-help
Hello,
I tried to build my own class from two base classes with the following
code:
class Control : public QObject, public QThread
{
...
but when I try to compile this, I get the error message:
control.h:57: parse error before `{'
Line 57 is the line with the '{' from the example above.
Is the syntax different for g++ or is it just not possible to use two
base classes?
Thanks in advance.
Sven
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Using multiple base classes with g++
2001-03-15 2:20 Using multiple base classes with g++ Sven Heinzel
@ 2001-03-15 14:06 ` Alexandre Oliva
0 siblings, 0 replies; 2+ messages in thread
From: Alexandre Oliva @ 2001-03-15 14:06 UTC (permalink / raw)
To: Sven Heinzel; +Cc: gcc-help
On Mar 15, 2001, Sven Heinzel <heinzel@dvs.de> wrote:
> class Control : public QObject, public QThread
> {
> control.h:57: parse error before `{'
I guess class QThread hasn't been declared nor defined at that point.
A class must have already been defined for you to be able to use it as
a base class.
--
Alexandre Oliva Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer aoliva@{cygnus.com, redhat.com}
CS PhD student at IC-Unicamp oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist *Please* write to mailing lists, not to me
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