EJL

printer.cpp

// USBPrintApp.cpp : このファイルには 'main' 関数が含まれています。プログラム実行の開始と終了がそこで行われます。
//

#include <Windows.h>
#include <iostream>
#include <cstdlib>
#include <SetupAPI.h>
#include <wdmguid.h>
#include <strsafe.h>
#include <winusb.h>


GUID GUID_DEVINTERFACE_USBPRINT = {
   0x28d78fad, 0x5a12, 0x11D1, {0xae,
    0x5b, 0x00, 0x00, 0xf8, 0x03, 0xa8, 0xc2} };

BOOL GetDevicePath(LPGUID interface_guid, LPTSTR device_path, size_t buf_len)
{
    BOOL result = FALSE;
    HDEVINFO device_info;
    SP_DEVICE_INTERFACE_DATA interface_data;
    PSP_DEVICE_INTERFACE_DETAIL_DATA detail_data = NULL;
    ULONG length;
    ULONG required_length = 0;
    HRESULT hr;

    device_info = SetupDiGetClassDevs(interface_guid, NULL, NULL,
        DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
    interface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
    result = SetupDiEnumDeviceInterfaces(device_info, NULL, interface_guid, 0,
        &interface_data);
    SetupDiGetDeviceInterfaceDetail(device_info, &interface_data, NULL, 0,
        &required_length, NULL);
    detail_data = (PSP_DEVICE_INTERFACE_DETAIL_DATA)LocalAlloc(LMEM_FIXED,
        required_length);

    if (detail_data == NULL) {
        SetupDiDestroyDeviceInfoList(device_info);
        return FALSE;
    }

    detail_data->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA);
    length = required_length;

    result = SetupDiGetDeviceInterfaceDetail(device_info, &interface_data,
        detail_data, length,
        &required_length, NULL);
    if (result == FALSE) {
        LocalFree(detail_data);
        return FALSE;
    }

    hr = StringCchCopy(device_path, buf_len, detail_data->DevicePath);

    if (FAILED(hr)) {
        SetupDiDestroyDeviceInfoList(device_info);
        LocalFree(detail_data);
        return FALSE;
    }

    return result;
}


int main()
{
    TCHAR devicePath[_MAX_PATH + 1];
    BOOL ret = GetDevicePath(&GUID_DEVINTERFACE_USBPRINT, (LPTSTR)devicePath,
        sizeof(devicePath) / sizeof(devicePath[0]));
    if (!ret) {
        printf("error\n");
        return -1;
    }

    printf("%ls\n", devicePath);

    HANDLE deviceHandle = CreateFile(
        (LPTSTR)devicePath, GENERIC_WRITE | GENERIC_READ,
        FILE_SHARE_WRITE | FILE_SHARE_READ,NULL,
        OPEN_EXISTING,
        FILE_ATTRIBUTE_NORMAL/* | FILE_FLAG_OVERLAPPED*/, NULL);
    if (!deviceHandle) {
        printf("error at CreateFile\n");
        return -1;
    }

    DWORD written = 0;

    char foo[1024];
    /*
    foo[0] = 0x00;
    foo[1] = 0x00;
    foo[2] = 0x00;
    foo[3] = 0x1b;
    foo[4] = 0x01;
    memcpy(foo + 5, "@EJL ID\x0a", strlen("@EJL ID\x0a"));


    ret = WriteFile(deviceHandle, (LPCVOID)foo,13, &written, NULL);

    char foo2[1024];
    ZeroMemory(foo2, 1024);
    DWORD read = 0;
    ret = ReadFile(deviceHandle, foo2, 1024, &read, NULL);

    printf("%s\n", foo2);*/

    written = 0;


    foo[0] = 0x00;
    foo[1] = 0x00;
    foo[2] = 0x00;
    foo[3] = 0x1b;
    foo[4] = 0x01;

    const char* command = "@EJL ID\x0a";
    memcpy(foo/*  + 5*/, command, strlen(command));
    //memcpy(foo + 5, "@EJL 1284.4\x0a@EJL     \x0a", strlen("@EJL 1284.4\x0a@EJL     \x0a"));

    //memcpy(foo + 5, "@EJL GET COPIES\x0d\x0a", strlen("@EJL GET COPIES\x0d\x0a"));



    ret = WriteFile(deviceHandle, (LPCVOID)foo,/*5+ */strlen(command), &written, NULL);

    char foo2[1024];
    ZeroMemory(foo2, 1024);
    DWORD read = 0;
    ret = ReadFile(deviceHandle, foo2, 1024, &read, NULL);

    printf("%s\n", foo2);

    return 0;

}