[Qt-interest] QHash<QString,class>?

[Israel Brewster]

This may be more of a basic c++ question, but as I am developing in  
Qt, and using Qt data structures, I figured I'd ask here. Here's the  
situation: I have a number of classes, all of which inherit from a  
common baseClass (QMainWindow based, if that makes a difference). In  
my code I have a pointer to baseClass, and then, depending on the  
value of a QString, I instantiate a new instance of one of these child  
classes on said pointer. So at the moment my functioning code looks  
basically like:

QString winType; // this is set elsewhere in the code, depending on  
what the user clicks, etc.

baseClass * window;

if(winType==winA)
{
	window=new winA;
}
else if(winType==winB)
{
	window=new winB;
}
else if....
...

and so on and so forth for each child class. This works, but is  
obviously ugly and doesn't scale well. I only have two at the moment  
actually, but this number could grow arbitrarily. Is there a better  
way to do this? I was thinking something like:

QHash <QString,class> winTypeHash;
winTypeHash["winA"]=winA;
winTypeHash["winB"]=winB;
//etc....

window=new winTypeHash[winType];

but of course, that's not an option, at least not as I wrote it. So  
what might be a good option? Thanks.
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Israel Brewster
Computer Support Technician
Frontier Flying Service Inc.
5245 Airport Industrial Rd
Fairbanks, AK 99709
(907) 450-7250 x293
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