C++ 调用有驱动的USB小票打印机方法2
这种办法可以指定小票打印机,在里面执行POS58指令,但是必须安装驱动
#if 0
HANDLE OpenDevice(LPGUID pGuid, char *outNameBuf)
{
HANDLE hOut = INVALID_HANDLE_VALUE;
HDEVINFO hardwareDeviceInfo;
SP_INTERFACE_DEVICE_DATA deviceInfoData;
hardwareDeviceInfo = SetupDiGetClassDevs(pGuid, NULL, NULL, (DIGCF_PRESENT | DIGCF_INTERFACEDEVICE));
deviceInfoData.cbSize = sizeof(SP_INTERFACE_DEVICE_DATA);
if (SetupDiEnumDeviceInterfaces(hardwareDeviceInfo, 0, pGuid, 0, &deviceInfoData))
{
hOut = OpenOneDevice(hardwareDeviceInfo, &deviceInfoData, outNameBuf);
if (hOut == INVALID_HANDLE_VALUE)
return INVALID_HANDLE_VALUE;
}
DWORD reErr = GetLastError();
SetupDiDestroyDeviceInfoList(hardwareDeviceInfo);
return hOut;
}
HANDLE OpenOneDevice(HDEVINFO HardwareDeviceInfo, PSP_INTERFACE_DEVICE_DATA DeviceInfoData, char *devName)
{
PSP_INTERFACE_DEVICE_DETAIL_DATA functionClassDeviceData = NULL;
ULONG predictedLength = 0;
ULONG requiredLength = 0;
HANDLE hOut = INVALID_HANDLE_VALUE;
// allocate a function class device data structure to receive the goods about this particular device.
SetupDiGetInterfaceDeviceDetail(HardwareDeviceInfo, DeviceInfoData, NULL, 0, &requiredLength, NULL);
predictedLength = requiredLength;
// sizeof (SP_FNCLASS_DEVICE_DATA) + 512;
functionClassDeviceData = (PSP_INTERFACE_DEVICE_DETAIL_DATA)malloc(predictedLength);
functionClassDeviceData->cbSize = sizeof(SP_INTERFACE_DEVICE_DETAIL_DATA);
// Retrieve the information from Plug and Play.
if (!SetupDiGetInterfaceDeviceDetail(
HardwareDeviceInfo,
DeviceInfoData,
functionClassDeviceData,
predictedLength,
&requiredLength,
NULL))
{
free(functionClassDeviceData);
return INVALID_HANDLE_VALUE;
}
strcpy(devName, functionClassDeviceData->DevicePath);
printf("Attempting to open %s\n ", devName);
hOut = CreateFile(functionClassDeviceData->DevicePath,
GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
OPEN_EXISTING,
0,
NULL);
if (INVALID_HANDLE_VALUE == hOut)
printf("FAILED to open %s\n ", devName);
free(functionClassDeviceData);
return hOut;
}
HANDLE hDEV = OpenDevice((LPGUID)&GUID_BUS_UMSS, completeDeviceName);
if (hDEV == INVALID_HANDLE_VALUE)
return;
DeviceIoControl(
hDEV,
IOCTL_Vender_VCMD_WRITE,
buf,
31, //CBW
buf,
13, // Data + CSW
(LPDWORD)&nBytes,
NULL
);
#endif
void padTo(std::string &str, const size_t num)
{
const char paddingChar = ' ';
if (num > str.size())
str.insert(0, num - str.size(), paddingChar);
}
void double2str(double num, string & resultstr)
{
std::stringstream stream;
stream << std::fixed << std::setprecision(2) << num;
resultstr = stream.str();
}
i
int testprint(const char * posPrintername)
{
LPTSTR szPrinterName;
//LPBYTE lpDatainitial, lpBolder, lpdoubleheight, lpdoublewidth, lpreset;
LPBYTE lpData;
DWORD dwCount;
HANDLE hPrinter;
DOC_INFO_1 DocInfo;
DWORD dwJob;
DWORD dwBytesWritten;
wchar_t * posPrinternamew = new wchar_t[strlen(posPrintername) + 1];
mbstowcs_s(NULL, posPrinternamew, strlen(posPrintername) + 1, posPrintername, strlen(posPrintername));
std::string initialstr = "\x1b\x40";
std::string doubletimesfontsize = "\x1b\x21\x30";
std::string normalfontsize = "\x1b\x21\x01";
std::string resetstr = "\x00";
std::string printcontents = "测试测试测试测试测试测试\n ";
lpData = (LPBYTE)printcontents.c_str();
dwCount = strlen(printcontents.c_str());
// Need a handle to the printer.
szPrinterName = posPrinternamew;
if (!OpenPrinter(szPrinterName, &hPrinter, NULL))
{
return -1;
}
// Fill in the structure with info about this "document."
DocInfo.pDocName = TEXT("My Document");
DocInfo.pOutputFile = NULL;
DocInfo.pDatatype = TEXT("RAW");
// Inform the spooler the document is beginning.
if ((dwJob = StartDocPrinter(hPrinter, 1, (LPBYTE)&DocInfo)) == 0)
{
ClosePrinter(hPrinter);
return -2;
}
// Start a page.
if (!StartPagePrinter(hPrinter))
{
EndDocPrinter(hPrinter);
ClosePrinter(hPrinter);
return -3;
}
// Send the data to the printer.
if (!WritePrinter(hPrinter, (LPBYTE)initialstr.c_str(), strlen(initialstr.c_str()), &dwBytesWritten))
{
EndPagePrinter(hPrinter);
EndDocPrinter(hPrinter);
ClosePrinter(hPrinter);
return -4;
}
// Send the data to the printer.
if (!WritePrinter(hPrinter, (LPBYTE)doubletimesfontsize.c_str(), strlen(doubletimesfontsize.c_str()), &dwBytesWritten))
{
EndPagePrinter(hPrinter);
EndDocPrinter(hPrinter);
ClosePrinter(hPrinter);
return -4;
}
// Send the data to the printer.
if (!WritePrinter(hPrinter, lpData, dwCount, &dwBytesWritten))
{
EndPagePrinter(hPrinter);
EndDocPrinter(hPrinter);
ClosePrinter(hPrinter);
return -4;
}
if (!WritePrinter(hPrinter, (LPBYTE)normalfontsize.c_str(), strlen(normalfontsize.c_str()), &dwBytesWritten))
{
EndPagePrinter(hPrinter);
EndDocPrinter(hPrinter);
ClosePrinter(hPrinter);
return -4;
}
// Send the data to the printer.
if (!WritePrinter(hPrinter, lpData, dwCount, &dwBytesWritten))
{
EndPagePrinter(hPrinter);
EndDocPrinter(hPrinter);
ClosePrinter(hPrinter);
return -4;
}
if (!WritePrinter(hPrinter, (LPBYTE)resetstr.c_str(), strlen(resetstr.c_str()), &dwBytesWritten))
{
EndPagePrinter(hPrinter);
EndDocPrinter(hPrinter);
ClosePrinter(hPrinter);
return -4;
}
// End the page.
if (!EndPagePrinter(hPrinter))
{
EndDocPrinter(hPrinter);
ClosePrinter(hPrinter);
return -5;
}
// Inform the spooler that the document is ending.
if (!EndDocPrinter(hPrinter))
{
ClosePrinter(hPrinter);
return -6;
}
// Tidy up the printer handle.
ClosePrinter(hPrinter);
// Check to see if correct number of bytes were written.
if (dwBytesWritten != dwCount)
{
return -7;
}
return 0;
}
posted on 2021-01-08 14:58 redmondfans 阅读(530) 评论(0) 编辑 收藏 举报