#include <windows.h>
#include <stdio.h>

int main(int argc, char** argv[])
{
	printf("%09d: CreateMutex()\n", GetTickCount());
	HANDLE mtx = CreateMutex(0, 0, "Test_mutex");
	if (mtx != NULL) {
		printf("%09d: WaitForSingleObject()\n", GetTickCount());
		WaitForSingleObject(mtx, INFINITE);
		printf("%09d: Lock\n", GetTickCount());
		system("pause");
		printf("%09d: CloseHandle()\n", GetTickCount());
		if(!CloseHandle(mtx)) printf("%09d: CloseHandle() error\n", GetTickCount());
	}
	printf("%09d: Sleep()\n", GetTickCount());
	Sleep(2000);
	printf("%09d: end\n", GetTickCount());
	return 0;
}

041522109: CreateMutex()
041522109: WaitForSingleObject()
041522109: Lock
Для продолжения нажмите любую клавишу . . .
041539515: CloseHandle()
041539515: Sleep()
041541515: end

041534125: CreateMutex()
041534125: WaitForSingleObject()
041541515: Lock

...
	HANDLE mtx2 = CreateMutex(0, 0, "Test_mutex");
	ReleaseMutex(mtx2);
...