reactos/rosapps/applications/cmdutils/winspool_print/main.c
Hermès Bélusca-Maïto 688b18d88c [WINSPOOL_PRINT]: Improve the test application:
- Do not hardcode the test file name, but instead take it from the command line (and add a Usage() function);
- Do not use a too large fixed-size buffer to read & print the file, but instead use a correctly-size buffer, get the file size, and then do a loop to read data from the file by chunks & send it to the printer.

svn path=/trunk/; revision=73047
2016-10-26 22:43:53 +00:00

101 lines
2.4 KiB
C

#include <stdio.h>
#include <windows.h>
void Usage(WCHAR* name)
{
wprintf(L"Usage: %s testfile\n", name);
}
int wmain(int argc, WCHAR* argv[])
{
int ReturnValue = 1;
DWORD dwFileSize;
DWORD dwRead, dwWritten;
HANDLE hFile = INVALID_HANDLE_VALUE;
HANDLE hPrinter = NULL;
DOC_INFO_1W docInfo;
BYTE Buffer[4096];
if (argc <= 1)
{
Usage(argv[0]);
return 0;
}
hFile = CreateFileW(argv[1], GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL);
if (hFile == INVALID_HANDLE_VALUE)
{
printf("CreateFileW failed, last error is %lu!\n", GetLastError());
goto Cleanup;
}
dwFileSize = GetFileSize(hFile, NULL);
if (dwFileSize == INVALID_FILE_SIZE)
{
printf("File is too big, or GetFileSize failed; last error is %lu!\n", GetLastError());
goto Cleanup;
}
if (!OpenPrinterW(L"Dummy Printer On LPT1", &hPrinter, NULL))
{
printf("OpenPrinterW failed, last error is %lu!\n", GetLastError());
goto Cleanup;
}
/* Print to a printer, with the "RAW" datatype (pDatatype == NULL or "RAW") */
ZeroMemory(&docInfo, sizeof(docInfo));
docInfo.pDocName = L"winspool_print";
if (!StartDocPrinterW(hPrinter, 1, (LPBYTE)&docInfo))
{
printf("StartDocPrinterW failed, last error is %lu!\n", GetLastError());
goto Cleanup;
}
if (!StartPagePrinter(hPrinter))
{
printf("StartPagePrinter failed, last error is %lu!\n", GetLastError());
goto Cleanup;
}
while (dwFileSize > 0)
{
dwRead = min(sizeof(Buffer), dwFileSize);
if (!ReadFile(hFile, Buffer, dwRead, &dwRead, NULL))
{
printf("ReadFile failed, last error is %lu!\n", GetLastError());
goto Cleanup;
}
dwFileSize -= dwRead;
if (!WritePrinter(hPrinter, Buffer, dwRead, &dwWritten))
{
printf("WritePrinter failed, last error is %lu!\n", GetLastError());
goto Cleanup;
}
}
if (!EndPagePrinter(hPrinter))
{
printf("EndPagePrinter failed, last error is %lu!\n", GetLastError());
goto Cleanup;
}
if (!EndDocPrinter(hPrinter))
{
printf("EndDocPrinter failed, last error is %lu!\n", GetLastError());
goto Cleanup;
}
ReturnValue = 0;
Cleanup:
if (hPrinter)
ClosePrinter(hPrinter);
if (hFile != INVALID_HANDLE_VALUE)
CloseHandle(hFile);
return ReturnValue;
}