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#include <winpr/crt.h>
#include <winpr/comm.h>
#include <winpr/file.h>
#include <winpr/synch.h>
#include <winpr/handle.h>
int TestCommMonitor(int argc, char* argv[])
{
HANDLE hComm;
DWORD dwError;
BOOL fSuccess;
DWORD dwEvtMask;
OVERLAPPED overlapped = { 0 };
LPCSTR lpFileName = "\\\\.\\COM1";
hComm = CreateFileA(lpFileName, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING,
FILE_FLAG_OVERLAPPED, NULL);
if (!hComm || (hComm == INVALID_HANDLE_VALUE))
{
printf("CreateFileA failure: %s\n", lpFileName);
return -1;
}
fSuccess = SetCommMask(hComm, EV_CTS | EV_DSR);
if (!fSuccess)
{
printf("SetCommMask failure: GetLastError() = %" PRIu32 "\n", GetLastError());
return -1;
}
if (!(overlapped.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL)))
{
printf("CreateEvent failed: GetLastError() = %" PRIu32 "\n", GetLastError());
return -1;
}
if (WaitCommEvent(hComm, &dwEvtMask, &overlapped))
{
if (dwEvtMask & EV_DSR)
{
printf("EV_DSR\n");
}
if (dwEvtMask & EV_CTS)
{
printf("EV_CTS\n");
}
}
else
{
dwError = GetLastError();
if (dwError == ERROR_IO_PENDING)
{
printf("ERROR_IO_PENDING\n");
}
else
{
printf("WaitCommEvent failure: GetLastError() = %" PRIu32 "\n", dwError);
return -1;
}
}
CloseHandle(hComm);
return 0;
}
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