expected a ";" on strange place

Question

I have posted here entier code cuz myb I made bad struct or put some functions on wrong place . But It doesnt make sens for me why I am getting Error on LRESULT CALLBACK MouseHookProc(int nCode, WPARAM wParam, LPARAM lParam) ,and it doesnt make sens to put ; after it. If someone have time to check code and give me advice how to fix this or realize this on easier way ,I will be very thankful.

error

  int main()
    {
        int togler;
        int g;
        HHOOK MouseHook;
        HHOOK hhkLowLevelKybd;
        bool SupressMouseHook = false;
        bool click = false;
        LRESULT CALLBACK MouseHookProc(int nCode, WPARAM wParam, LPARAM lParam)
        {
            BOOL eatMouseStroke2 = false;
            if (!SupressMouseHook) {
                BOOL eatMouseStroke = false;
                if (togler == 1) {
                    if (wParam == WM_LBUTTONDOWN) {
                        click = true;
                    }
                    else if (wParam == WM_LBUTTONUP) {
                        click = false;
                    }
                }
                return(eatMouseStroke ? 1 : CallNextHookEx(NULL, nCode, wParam, lParam));
            }
            else {
                BOOL eatMouseStroke = false;
                return(eatMouseStroke ? 1 : CallNextHookEx(NULL, nCode, wParam, lParam));
            }
            return(eatMouseStroke2 ? 1 : CallNextHookEx(NULL, nCode, wParam, lParam));
        }
        MouseHook = SetWindowsHookEx(WH_MOUSE_LL, MouseHookProc, GetModuleHandle(NULL), 0);
        CreateThread(NULL, NULL, (LPTHREAD_START_ROUTINE)clicker, NULL, NULL, NULL);

    }

Answer 1

You should move MouseHookProc definition outside of main. C++ does not allow function definitions inside of other functions.

Among other things, (LPTHREAD_START_ROUTINE)clicker is also wrong, there is no need to perform cast here, instead clicker function must have correct signature, void down(); is actually a function declaration, not invocation.