Sample Code
Windows Driver Samples/ Generic Text-Only Driver/ C++/ render/ ttyud.cpp/
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
// PARTICULAR PURPOSE.
//
// Copyright 1997-2003 Microsoft Corporation. All Rights Reserved.
//
// FILE: TTYUD.cpp
//
// PURPOSE: Main file for TTY rendering module.
//
#include "tty.h"
#include <stddef.h>
#include <stdlib.h>
#include <stdarg.h>
#include <winspool.h>
#include <tchar.h>
#include <excpt.h>
#include <PRINTOEM.H>
#include "ttyui.h"
#include "ttyud.h"
#include "debug.h"
#include <STRSAFE.H>
// This indicates to Prefast that this is a usermode driver file.
_Analysis_mode_(_Analysis_code_type_user_driver_);
#define TTY_INFO_MARGINS 1
#define TTY_INFO_CODEPAGE 2
#define TTY_INFO_NUM_UFMS 3
#define TTY_INFO_UFM_IDS 4
#define NUM_UFMS 3 // for internal use only. use TTY_INFO_NUM_UFMS
// to query number of font sizes supported.
////////////////////////////////////////////////////////
// INTERNAL PROTOTYPES
////////////////////////////////////////////////////////
BOOL
TextGetInfo(
DWORD dwInfo,
_Out_writes_bytes_(cbSize) PVOID pBuffer,
DWORD cbSize,
_Out_ PDWORD pcbNeeded
)
{
// Validate parameters.
if( ( (OEMGI_GETSIGNATURE != dwInfo)
&&
(OEMGI_GETINTERFACEVERSION != dwInfo)
&&
(OEMGI_GETVERSION != dwInfo)
)
||
(NULL == pcbNeeded)
)
{
VERBOSE(ERRORTEXT("TTYGetInfo() ERROR_INVALID_PARAMETER.\r\n"));
// Did not write any bytes.
if(NULL != pcbNeeded)
*pcbNeeded = 0;
return FALSE;
}
// Need/wrote 4 bytes.
*pcbNeeded = 4;
// Validate buffer size. Minimum size is four bytes.
if( (NULL == pBuffer)
||
(4 > cbSize)
)
{
// VERBOSE(ERRORTEXT("TTYGetInfo() ERROR_INSUFFICIENT_BUFFER.\r\n"));
EngSetLastError(ERROR_INSUFFICIENT_BUFFER);
return FALSE;
}
// Write information to buffer.
switch(dwInfo)
{
case OEMGI_GETSIGNATURE:
*(LPDWORD)pBuffer = OEM_SIGNATURE;
break;
case OEMGI_GETINTERFACEVERSION:
*(LPDWORD)pBuffer = PRINTER_OEMINTF_VERSION;
break;
case OEMGI_GETVERSION:
*(LPDWORD)pBuffer = OEM_VERSION;
break;
}
return TRUE;
}
PDEVOEM
TextEnablePDEV(
PDEVOBJ pdevobj,
_In_ PWSTR pPrinterName,
ULONG cPatterns,
_In_reads_(cPatterns) HSURF *phsurfPatterns,
ULONG cjGdiInfo,
_In_reads_bytes_(cjGdiInfo) GDIINFO *pGdiInfo,
ULONG cjDevInfo,
_In_reads_bytes_(cjDevInfo) DEVINFO *pDevInfo,
DRVENABLEDATA *pded
)
{
VERBOSE(DLLTEXT("TextEnablePDEV() entry.\r\n"));
UNREFERENCED_PARAMETER(pPrinterName);
UNREFERENCED_PARAMETER(cPatterns);
UNREFERENCED_PARAMETER(phsurfPatterns);
UNREFERENCED_PARAMETER(cjGdiInfo);
UNREFERENCED_PARAMETER(pGdiInfo);
UNREFERENCED_PARAMETER(cjDevInfo);
UNREFERENCED_PARAMETER(pDevInfo);
UNREFERENCED_PARAMETER(pded);
PREGSTRUCT pMyStuff; // sebset of pGlobals
DWORD dwStatus, cbNeeded, dwType ;
LPTSTR pValueName = TEXT("TTY DeviceConfig");
// these strings must match strings in oemui.cpp - VinitMyStuff()
pMyStuff = (PREGSTRUCT)MemAlloc(sizeof(REGSTRUCT)) ;
if(!pMyStuff)
return ((PDEVOEM)NULL) ; // failed.
pdevobj->pdevOEM = (PDEVOEM)pMyStuff ;
dwStatus = EngGetPrinterData(
pdevobj->hPrinter, // handle of printer object
pValueName, // address of value name
&dwType, // address receiving value type
(LPBYTE)pMyStuff,
// address of array of bytes that receives data
sizeof(REGSTRUCT), // size, in bytes, of array
&cbNeeded // address of variable
// with number of bytes retrieved (or required)
);
if (dwStatus != ERROR_SUCCESS || pMyStuff->dwVersion != TTYSTRUCT_VER
|| dwType != REG_BINARY
|| cbNeeded != sizeof(REGSTRUCT))
{
// Init secret block with defaults
pMyStuff->dwVersion = TTYSTRUCT_VER ;
// version stamp to avoid incompatible structures.
pMyStuff->bIsMM = TRUE ; // default to mm units
// read margin values from registry and store into temp RECT
pMyStuff->iCodePage = 1252 ; // keep in sync with oemui.cpp - VinitMyStuff()
pMyStuff->rcMargin.left = pMyStuff->rcMargin.top =
pMyStuff->rcMargin.right = pMyStuff->rcMargin.bottom = 0 ;
pMyStuff->BeginJob.dwLen =
pMyStuff->EndJob.dwLen =
pMyStuff->PaperSelect.dwLen =
pMyStuff->FeedSelect.dwLen =
pMyStuff->Sel_10_cpi.dwLen =
pMyStuff->Sel_12_cpi.dwLen =
pMyStuff->Sel_17_cpi.dwLen =
pMyStuff->Bold_ON.dwLen =
pMyStuff->Bold_OFF.dwLen =
pMyStuff->Underline_ON.dwLen =
pMyStuff->Underline_OFF.dwLen = 0 ;
// more fields here!
pMyStuff->dwGlyphBufSiz =
pMyStuff->dwSpoolBufSiz = 0 ;
pMyStuff->aubGlyphBuf =
pMyStuff->aubSpoolBuf = NULL ;
}
return ((PDEVOEM)pMyStuff) ;
}
VOID
TextDisablePDEV(
_In_ PDEVOBJ pdevobj
)
{
VERBOSE(DLLTEXT("TTYDisablePDEV() entry.\r\n"));
PREGSTRUCT pMyStuff; // sebset of pGlobals
pMyStuff = (PREGSTRUCT)pdevobj->pdevOEM ;
if(pMyStuff->aubGlyphBuf)
MemFree(pMyStuff->aubGlyphBuf) ;
if(pMyStuff->aubSpoolBuf)
MemFree(pMyStuff->aubSpoolBuf) ;
MemFree(pdevobj->pdevOEM);
}
BOOL
TextEnableDriver(
DWORD dwOEMintfVersion,
DWORD dwSize,
PDRVENABLEDATA pded
)
{
VERBOSE(DLLTEXT("TextEnableDriver() entry.\r\n"));
// Validate paramters.
if( (PRINTER_OEMINTF_VERSION != dwOEMintfVersion) ||
// above check not needed for COM
(sizeof(DRVENABLEDATA) > dwSize)
||
(NULL == pded)
)
{
// VERBOSE(ERRORTEXT("TTYEnableDriver() ERROR_INVALID_PARAMETER.\r\n"));
return FALSE;
}
pded->iDriverVersion = PRINTER_OEMINTF_VERSION ; // not DDI_DRIVER_VERSION;
pded->c = 0;
return TRUE;
}
// This function exceeds the default stack usage threshold by a few bytes.
#pragma warning(push)
#pragma warning(disable:6262)
BOOL
TextTTYGetInfo(
_In_ PDEVOBJ pdevobj,
DWORD dwInfoIndex,
_Out_writes_bytes_(dwSize) PVOID pOutBuf,
DWORD dwSize,
_In_ DWORD *pcbNeeded
)
{
PREGSTRUCT pMyStuff; // sebset of pGlobals
REGSTRUCT MyStuff; // temp structure to hold registry data
pMyStuff = (PREGSTRUCT)pdevobj->pdevOEM ;
if(!pMyStuff)
{
DWORD dwStatus, cbNeeded, dwType ;
LPTSTR pValueName = TEXT("TTY DeviceConfig");
// these strings must match strings in oemui.cpp - VinitMyStuff()
// and TTYEnablePDEV()
pMyStuff = &MyStuff;
pMyStuff->dwVersion = 0 ;
dwStatus = EngGetPrinterData(
pdevobj->hPrinter, // handle of printer object
pValueName, // address of value name
&dwType, // address receiving value type
(LPBYTE)pMyStuff ,
// address of array of bytes that receives data
sizeof(REGSTRUCT), // size, in bytes, of array
&cbNeeded // address of variable
// with number of bytes retrieved (or required)
);
if (dwStatus != ERROR_SUCCESS || pMyStuff->dwVersion != TTYSTRUCT_VER
|| dwType != REG_BINARY
|| cbNeeded != sizeof(REGSTRUCT))
{
// set to defaults
pMyStuff->iCodePage = 1252 ; // keep in sync with oemui.cpp - VinitMyStuff()
pMyStuff->rcMargin.left = pMyStuff->rcMargin.top =
pMyStuff->rcMargin.right = pMyStuff->rcMargin.bottom = 0 ;
}
}
switch (dwInfoIndex)
{
case TTY_INFO_MARGINS:
*pcbNeeded = sizeof(RECT) ;
if(!pOutBuf || dwSize < *pcbNeeded)
return(FALSE) ;
*(LPRECT)pOutBuf = pMyStuff->rcMargin ;
break;
case TTY_INFO_CODEPAGE:
*pcbNeeded = sizeof(INT) ;
if(!pOutBuf || dwSize < *pcbNeeded)
return(FALSE) ;
*(INT *)pOutBuf = pMyStuff->iCodePage ;
break;
case TTY_INFO_NUM_UFMS:
*pcbNeeded = sizeof(DWORD) ;
if(!pOutBuf || dwSize < *pcbNeeded)
return(FALSE) ;
*(DWORD *)pOutBuf = NUM_UFMS ; // Number of resource IDs returned
// during a query for TTY_INFO_UFM_IDS
break;
case TTY_INFO_UFM_IDS:
// return resource IDs of the UFMs for 10,12, 17 cpi fonts.
*pcbNeeded = NUM_UFMS * sizeof(DWORD) ;
if(!pOutBuf || dwSize < *pcbNeeded)
return(FALSE) ;
switch(pMyStuff->iCodePage)
{
case (-1): // codepage 437
((DWORD *)pOutBuf)[0] = 4 ; // see tty\rc\tty.rc for resID assignments
((DWORD *)pOutBuf)[1] = 5;
((DWORD *)pOutBuf)[2] = 6;
break;
case (850): // codepage 850
((DWORD *)pOutBuf)[0] = 7; // see tty\rc\tty.rc for resID assignments
((DWORD *)pOutBuf)[1] = 8;
((DWORD *)pOutBuf)[2] = 9;
break;
case (-3): // codepage 863
((DWORD *)pOutBuf)[0] = 7; // see tty\rc\tty.rc for resID assignments
((DWORD *)pOutBuf)[1] = 8;
((DWORD *)pOutBuf)[2] = 9;
break;
case (-17): // codepage 932
((DWORD *)pOutBuf)[0] = 13 ; // see tty\rc\tty.rc for resID assignments
((DWORD *)pOutBuf)[1] = 14 ;
((DWORD *)pOutBuf)[2] = 15 ;
break;
case (-16): // codepage 936
((DWORD *)pOutBuf)[0] = 16 ; // see tty\rc\tty.rc for resID assignments
((DWORD *)pOutBuf)[1] = 17 ;
((DWORD *)pOutBuf)[2] = 18 ;
break;
case (-18): // codepage 949
((DWORD *)pOutBuf)[0] = 19 ; // see tty\rc\tty.rc for resID assignments
((DWORD *)pOutBuf)[1] = 20 ;
((DWORD *)pOutBuf)[2] = 21 ;
break;
case (-10): // codepage 950
((DWORD *)pOutBuf)[0] = 22 ; // see tty\rc\tty.rc for resID assignments
((DWORD *)pOutBuf)[1] = 23 ;
((DWORD *)pOutBuf)[2] = 24 ;
break;
case (1250): // codepage 1250
((DWORD *)pOutBuf)[0] = 25 ; // see tty\rc\tty.rc for resID assignments
((DWORD *)pOutBuf)[1] = 26;
((DWORD *)pOutBuf)[2] = 27;
break;
case (1251): // codepage 1251
((DWORD *)pOutBuf)[0] = 28; // see tty\rc\tty.rc for resID assignments
((DWORD *)pOutBuf)[1] = 29;
((DWORD *)pOutBuf)[2] = 30;
break;
case (1252): // codepage 1252
((DWORD *)pOutBuf)[0] = 31; // see tty\rc\tty.rc for resID assignments
((DWORD *)pOutBuf)[1] = 32;
((DWORD *)pOutBuf)[2] = 33;
break;
case (1253): // codepage 1253
((DWORD *)pOutBuf)[0] = 34 ; // see tty\rc\tty.rc for resID assignments
((DWORD *)pOutBuf)[1] = 35;
((DWORD *)pOutBuf)[2] = 36;
break;
case (1254): // codepage 1254
((DWORD *)pOutBuf)[0] = 37 ; // see tty\rc\tty.rc for resID assignments
((DWORD *)pOutBuf)[1] = 38;
((DWORD *)pOutBuf)[2] = 39;
break;
case (852): // codepage 852
((DWORD *)pOutBuf)[0] = 40 ; // see tty\rc\tty.rc for resID assignments
((DWORD *)pOutBuf)[1] = 41;
((DWORD *)pOutBuf)[2] = 42;
break;
case (857): // codepage 857
((DWORD *)pOutBuf)[0] = 43 ; // see tty\rc\tty.rc for resID assignments
((DWORD *)pOutBuf)[1] = 44;
((DWORD *)pOutBuf)[2] = 45;
break;
default:
((DWORD *)pOutBuf)[0] = 1 ; // '10 cpi'
((DWORD *)pOutBuf)[1] = 2 ; // '12 cpi'
((DWORD *)pOutBuf)[2] = 3 ; // '17 cpi'
break;
}
break;
default:
*pcbNeeded = 0 ; // no data availible
return(FALSE) ; // unsupported index
}
return(TRUE);
}
#pragma warning(pop)
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