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

#define PRINTER_NAME "Samsung CLX-216x Series"
#define USB_PRINTER_ADDRESS "268435467"

int main(int argc, char* argv[]) {
    HANDLE hPrinter = INVALID_HANDLE_VALUE;
    HANDLE hChangeNotificationObject = INVALID_HANDLE_VALUE;

    printf("INFO: Starting...\n");

    // initialize

    if (OpenPrinter(PRINTER_NAME, &hPrinter, NULL) == 0) {
        printf("ERR: Could not open printer\n");
        exit(1);
    } else {
        printf("INFO: Printer handle is 0x%08X\n", hPrinter);
    }

    hChangeNotificationObject = FindFirstPrinterChangeNotification(hPrinter, PRINTER_CHANGE_JOB, 0, NULL);
    if (hChangeNotificationObject == INVALID_HANDLE_VALUE) {
        printf("ERR: Could not get a notification object\n");
    } else {
        printf("INFO: notification object handle is 0x%08X\n", hChangeNotificationObject);
    }

    printf("Waiting for change notification... Try to print something like the test page...\n");
    WaitForSingleObject(hChangeNotificationObject, INFINITE);

    // we've got an event... connect the USB port via API
    system("vhui64.exe -t \"USE," USB_PRINTER_ADDRESS "\"");

    // cleanup

    if (hChangeNotificationObject != INVALID_HANDLE_VALUE) {
        if (FindClosePrinterChangeNotification(hChangeNotificationObject) == 0) {
            printf("ERR: Could not close notification object\n");
        } else {
            printf("INFO: Notification object closed\n");
        }
    }

    if (hPrinter != INVALID_HANDLE_VALUE) {
        if (ClosePrinter(hPrinter) == 0) {
            printf("ERR: Could not close printer\n");
        } else {
            printf("INFO: Printer handle closed\n");
        }
    }

    printf("INFO: done.\n");
 }