#include<iostream>
#include <windows.h>
#include <TlHelp32.h>

using namespace std;

// Получение PID по имени EXE
DWORD get_pid(const char* exe)
{
	DWORD ret = 0;
	PROCESSENTRY32 pe32 = { 0 };
	pe32.dwSize = sizeof(PROCESSENTRY32);
	HANDLE hProcessSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
	if (hProcessSnap != INVALID_HANDLE_VALUE) {
		if (Process32First(hProcessSnap, &pe32)) {
			do {
				if (lstrcmpi(pe32.szExeFile, exe) == 0) {
					ret = pe32.th32ProcessID;
					break;
				}
			} while (Process32Next(hProcessSnap, &pe32));
		}
		CloseHandle(hProcessSnap);
	}
	return ret;
}

// Поиск окна 
typedef struct {
	uint32_t pid;
	int count;
	HWND hwnd;
} find_t;

BOOL CALLBACK EnumWindowsProc(HWND hwnd, LPARAM find) {
	find_t* f = (find_t*) find;
	DWORD dwPID;
	GetWindowThreadProcessId(hwnd, &dwPID);
	if(dwPID == f->pid) {
		char buf[256];
		if(GetWindowText(hwnd, buf, 256)) {
			cout << dwPID << " " << hwnd << " " << buf << endl;
			f->count++;
			if(!f->hwnd) f->hwnd = hwnd;
		}
	}
	return true;
}

void main()
{
	setlocale(LC_ALL, "Russian");
	cout << "Контроль запуска" << endl;
	find_t f = { 0 };
	f.pid = get_pid("calc.exe");
	if(f.pid && EnumWindows(EnumWindowsProc, (LPARAM)&f) && f.hwnd) {
		cout << "Готово" << endl;
		SendMessage(f.hwnd, WM_CLOSE, 0, 0);
	}
}