CODEWITHSUNDEEP
c++winapiwin32-process
Ramilol
Ramilol

Reputation: 3462

c++ CALLBACK function type

I'm trying to create something like MsgProc in Win32. When they declare the MsgProc function they have the CALLBACK type before it. So, all I'm trying to is create my own messsage function that calls my function to process the messages. It is basically the same thing when messages getting sent and processed. My question is how can i create the Same process?. An example would be great.

Upvotes: 3

Views: 2082

Answers (3)

Alex Jasmin
Alex Jasmin

Reputation: 39496

Other than the classics function pointers and function objects you may be interested by the new C++0x lambdas.

Here's an example of passing a lambda to a timer function.

#include <windows.h>
#include <iostream>
#include <functional>

void onInterval(DWORD interval, std::function<void ()> callback) {
  for (;;) {
    Sleep(interval);
    callback();
  }
}

int main() {
  onInterval(1000, []() {std::cout<<"Tick! ";});
}

Upvotes: 1

Palmik
Palmik

Reputation: 2665

If you can use Boost, I would definitely give Boost.Signals a shot, they provide the functionality you are looking for in a clean and safe way (Boost.Signals2 even in thread-safe way.)

Upvotes: 0

Hank
Hank

Reputation: 547

If you're in C++, just use a function pointer in your class:

http://www.newty.de/fpt/fpt.html

Upvotes: 0

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