import std.stdio: writeln;

​

extern (System) nothrow

{

    alias WNDENUMPROC = int function(void*, long);

}

​

extern (System) nothrow

{

    int EnumWindowsSimulator(WNDENUMPROC f, long params)

    {

        f(cast(void*) 0, params);

        f(cast(void*) 1, params);

        return 0;

    }

}

void main() {

    void*[] hWndList;

    static extern (System) int mycallback(void* hWnd, long lparam) nothrow {

        *(cast(void*[] *) lparam) ~= hWnd;

        return true;

    }

​

    EnumWindowsSimulator(&mycallback, cast(long) &hWndList);

​

    writeln(hWndList);

}