How to typeof in C++

c++ rtti typeof typeid
Velho Kerho picture Velho Kerho · Oct 8, 2009 · Viewed 36.4k times · Source

How to simulate C# typeof-command behavior in C++?

C# example:

public static PluginNodeList GetPlugins (Type type)
{
 ...
}

Call:

PluginManager.GetPlugins (typeof(IPlugin))

How to implement this using C++? Maybe QT or Boost libraries provide a solution?

What about the case if you want to implement .GetPlugins(...) in a way that it loads those kinds of objects from a file (.so or .dll)?

Answer

daveg picture daveg · Oct 8, 2009

You could use a dynamic_cast to test types as shown below:

IPlugin* iPluginPtr = NULL;
iPluginPtr = dynamic_cast<IPlugin*>(somePluginPtr);

if (iPluginPtr) {
    // Cast succeeded
} else {
    // Cast failed
}

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