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    <blockquote> <p>Bind returns lambda_functor not a function pointer, so how can I cast this functor to function pointer?</p> </blockquote> <p>I don't think you can. However, off the top of my head, I can think of several alternatives: </p> <ul> <li><p>Use <code>boost::function&lt;void()&gt;</code> (or <code>std::function()</code> if your compiler supports TR1 or C++11) instead of <code>void (*)()</code>.<br> It has the ability to bind to just about anything with a somewhat compatible signature. </p></li> <li><p>Put the whole code into a template, make <code>PFUNCPLUGINCMD</code> a template parameter, and let function template argument deduction figure out the exact type. That's a variation on the former, actually, where you would use the result of <code>bind()</code> directly instead of having <code>boost::function</code> abstract away the gory details. </p></li> <li><p>Create a wrapper that calls the functor returned by <code>boost::bind()</code>.<br> A function template might help to let the compiler figure out the exact types and generate a suitable function, although I haven't tried to do that. However, since you cannot use the result of <code>bind()</code> as a template argument, but need to have give the function access to it nevertheless, you will need a global variable for this. (The ability to avoid this is one of the main advantages of function objects, a very versatile of which is <code>std::function</code>.) </p></li> <li><p>Extend your <code>PFUNCPLUGINCMD</code> callback type to support a user-provided parameter. For C callbacks, this usually is a <code>void*</code>. However, if you pass the address of the object returned by <code>bind()</code> to your callback, you would need to convert it into a pointer to the correct type - which, AFAIK, depends on the arguments provided to <code>bind()</code>. In order to avoid that, you'd need to pass something that abstracts away the exact type. Again, <code>std::function</code> comes to the rescue. </p></li> </ul> <p>The first idea would be the best, but it requires you to be able to change <code>PFUNCPLUGINCMD</code>. The last one might be best when <code>PFUNCPLUGINCMD</code> needs to be compatible with C, as it uses the common C callback idiom. </p>
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    1. POHow can I cast or convert boost bind to C function pointer?
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    1. COI cannot change the struct or PFUNCPLUGINCMD it's directly from Notepad++ Plugin Interface, and thus I cannot add the extra parameter either. I tried to do this with templates, but I cannot assign non-template types runtime.
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    2. CO@Ciantic: If you can't change that, and if Notepad++' plugin API indeed sports user callbacks without user parameters, then all you can do is to store the result of `bind()` in a global variable (possibly of the type `function<void()>`) and write a wrapper function which invokes that.
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    3. CO@sbi: Okay, I believe ya. But hold on as I get the code online, this is most retarded way to do this. Is this fixed in C++0x with anonymous functions: `pFunc = []() { func(statement); }`?
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