打印驱动安装，AddPrinterDriver()失败？？？总结。。。

各位大虾：
关于打印驱动的用程序安装有很多的讨论文章，但最后一直没有一个明确的解决办法。让很多写这方面的朋友一直没有提高。
在这个论坛里讨论最多的一个帖子是：
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http://www.driverdevelop.com/forum/html_44844.html?1071630540
文章标题 怎样把打印机驱动程序做成安装程序？
-----------------------------------------------------

直接用程序写打印驱动的安装过程大概分2步：

1。添加一个打印驱动
主要使用AddPrinterDriver()函数
这一步的关键是什么？？？？
为什么我调用AddPrinterDriver()返回TRUE却没有真正装上驱动？？
怎样才算安装上了打印驱动？

2：添加打印机
主要使用AddPrinter()函数
这一步要成功的关键是指定的打印驱动必须存在

这是我安装过程的代码。
驱动安装文件手工安装可以完成的！
//=========================================================
PRINTER_INFO_2 pi2;
DRIVER_INFO_3 di3;
HANDLE hPrinter;

char* Environment=_TEXT(\"Windows NT x86\");
char lpDriverPath[MAX_PATH];
char lpBuffer[MAX_PATH];
DWORD uSize=0;

BOOL b=GetPrinterDriverDirectory(NULL,Environment,1,(LPBYTE)lpBuffer,MAX_PATH,&uSize);

lstrcpy(_TEXT(lpDriverPath),_TEXT(lpBuffer));
lstrcat(_TEXT(lpDriverPath),_TEXT(\"\\\\VPrinter.dll\"));

char lpDataFilePath[MAX_PATH];
lstrcpy(_TEXT(lpDataFilePath),_TEXT(lpBuffer));
lstrcat(_TEXT(lpDataFilePath),_TEXT(\"\\\\vprinter.GPD\"));

char lpConfigFilePath[MAX_PATH];
lstrcpy(_TEXT(lpConfigFilePath),_TEXT(lpBuffer));
lstrcat(_TEXT(lpConfigFilePath),_TEXT(\"\\\\TVPproc.dll\"));

char lpDependecy[MAX_PATH];
memset(lpDependecy,0,sizeof(lpDependecy));
lstrcat(lpDependecy,_TEXT(\"stdnames.gpd\\0VPRINTER.INF\\0\\0\"));

ZeroMemory(&di3, sizeof(DRIVER_INFO_3));
di3.cVersion = 4;
di3.pName =_TEXT(\"wookin Virtual Printer\");//HP LaserJet III
di3.pEnvironment = Environment;
di3.pDriverPath = lpDriverPath;
di3.pDataFile =lpDataFilePath;
di3.pConfigFile =lpConfigFilePath;
di3.pDependentFiles = lpDependecy;
di3.pHelpFile = NULL;
di3.pMonitorName = NULL;
di3.pDefaultDataType = _TEXT(\"RAW\");
b=AddPrinterDriver(NULL, 3, (LPBYTE)&di3);

ZeroMemory(&pi2, sizeof(PRINTER_INFO_2));
pi2.pServerName=NULL;
pi2.pPrinterName = _TEXT(\"xxx1\");
pi2.pPortName = _TEXT(\"LPT1:\");
pi2.pDriverName = _TEXT(\"Virtual Printer\"); //驱动一定要存在才可以
pi2.pPrintProcessor = _TEXT(\"WinPrint\");
pi2.pDatatype = _TEXT(\"RAW\");
pi2.AveragePPM = 400;
hPrinter = AddPrinter(NULL, 2, (LPBYTE)&pi2);
DWORD dwerr=GetLastError();

ClosePrinter(hPrinter);
//=========================================================

Pointer to a null-terminated string that specifies the files the driver depends on. Each file name in the string is also terminated with a null (for example, Pscript.dll\0Qms810.PPD\0Pscrptui.dll\0Pspcriptui.hlp\0Pstest.txt\0\0). MSDN说这些字符串要紧凑的存储在内存里，每个文件都要用结束符来隔开，解决这个问题可以用下面的代码：
char *q = lpDependecy;
lstrcpy(q, _T("file1.dll"));
q += lstrlen(_T("file1.dll"))+1;

lstrcpy(q, _T("file2.gpd"));
q += lstrlen(_T("file2.gpd"))+1;

lstrcpy(q, _T("file3.ini"));
q += lstrlen(_T("file3.ini"))+1;

lstrcpy(q, _T("file4.dll"));
q += lstrlen(_T("file4.dll"))+1;

lstrcpy(q, _T("file5.inf"));
q += lstrlen(_T("file5.inf"))+1;
不过头疼的是，就算是这样，打印机还是不可以加上。不知道哪位高手可以赐教。我xp下的代码如下：请高手指点
PRINTER_INFO_2 pi2;
DRIVER_INFO_3 di3;
HANDLE hPrinter;

char* Environment=_TEXT("Windows NT x86");
char lpBuffer[MAX_PATH];

char lpDriverPath[MAX_PATH];
char lpDataFilePath[MAX_PATH];
char lpConfigFilePath[MAX_PATH];
char lpHelpFilePath[MAX_PATH];
char lpDependecy[MAX_PATH];

DWORD uSize=0;
CString str;
DWORD dwErr;
BOOL b;
char buffer[1024];

if (OpenPrinter("DRoad USB Printer",&hPrinter,NULL))
{
DeletePrinter(hPrinter);
ClosePrinter(hPrinter);
}
DeletePrinterDriver(NULL,"Windows NT x86","DRoad USB Printer");


GetPrinterDriverDirectory(NULL,Environment,1,(LPBYTE)lpBuffer,MAX_PATH,&uSize);
str.Format("lpBuffer is %s\n",lpBuffer);
AfxMessageBox(str);

lstrcpy(_TEXT(lpDriverPath),_TEXT(lpBuffer));
lstrcat(_TEXT(lpDriverPath),_TEXT("\\UNIDRV.DLL"));

lstrcpy(_TEXT(lpDataFilePath),_TEXT(lpBuffer));
lstrcat(_TEXT(lpDataFilePath),_TEXT("\\Dragon.GPD"));

lstrcpy(_TEXT(lpConfigFilePath),_TEXT(lpBuffer));
lstrcat(_TEXT(lpConfigFilePath),_TEXT("\\UNIDRVUI.DLL"));

lstrcpy(_TEXT(lpHelpFilePath),_TEXT(lpBuffer));
lstrcat(_TEXT(lpHelpFilePath),_TEXT("\\UNIDRV.HLP"));

memset(lpDependecy,0,sizeof(lpDependecy));
lstrcat(lpDependecy,_TEXT("Unires.dll\0Stdname.gpd\0Dragon.ini\0Dragon.dll\0Dragon.inf\0\0"));

char *q = lpDependecy;
lstrcpy(q, _T("Unires.dll"));
q += lstrlen(_T("Unires.dll"))+1;

lstrcpy(q, _T("Stdname.gpd"));
q += lstrlen(_T("Stdname.gpd"))+1;

lstrcpy(q, _T("Dragon.ini"));
q += lstrlen(_T("Dragon.ini"))+1;

lstrcpy(q, _T("Dragon.dll"));
q += lstrlen(_T("Dragon.dll"))+1;

lstrcpy(q, _T("Dragon.inf"));
q += lstrlen(_T("Dragon.inf"))+1;

ZeroMemory(&di3, sizeof(DRIVER_INFO_3));
di3.cVersion = 0x03;
di3.pName =_TEXT("DRoad USB Printer");
di3.pEnvironment = Environment;
di3.pDriverPath = lpDriverPath;
di3.pDataFile =lpDataFilePath;
di3.pConfigFile =lpConfigFilePath;
di3.pDependentFiles = lpDependecy;
di3.pHelpFile = lpHelpFilePath;
di3.pMonitorName = NULL;
di3.pDefaultDataType = _TEXT("RAW");

SetLastError(0);
if (!AddPrinterDriver(NULL, 3, (LPBYTE)&di3))
{
dwErr = GetLastError();
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,NULL,dwErr,NULL,buffer,sizeof(buffer),NULL);
MessageBox(buffer);
}

ZeroMemory(&pi2, sizeof(PRINTER_INFO_2));
pi2.pServerName=NULL;
pi2.pPrinterName = _TEXT("DRoad USB Printer");
pi2.pPortName = _TEXT("USB001");
pi2.pDriverName = _TEXT("DRoad USB Printer"); pi2.pPrintProcessor = _TEXT("WinPrint");
pi2.pDatatype = _TEXT("RAW");
pi2.AveragePPM = 18;

SetLastError(0);
if ((hPrinter = AddPrinter(NULL, 2, (LPBYTE)&pi2))==NULL)
{
dwErr = GetLastError();
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,NULL,dwErr, NULL,buffer,sizeof(buffer),NULL);
MessageBox(buffer);
}

ClosePrinter(hPrinter);

Pointer to a null-terminated string that specifies the files the driver depends on. Each file name in the string is also terminated with a null (for example, Pscript.dll\\0Qms810.PPD\\0Pscrptui.dll\\0Pspcriptui.hlp\\0Pstest.txt\\0\\0). MSDN说这些字符串要紧凑的存储在内存里，每个文件都要用结束符来隔开，解决这个问题可以用下面的代码：
char *q = lpDependecy;
lstrcpy(q, _T("file1.dll"));
q += lstrlen(_T("file1.dll"))+1;

lstrcpy(q, _T("file2.gpd"));
q += lstrlen(_T("file2.gpd"))+1;

lstrcpy(q, _T("file3.ini"));
q += lstrlen(_T("file3.ini"))+1;

lstrcpy(q, _T("file4.dll"));
q += lstrlen(_T("file4.dll"))+1;

lstrcpy(q, _T("file5.inf"));
q += lstrlen(_T("file5.inf"))+1;
不过头疼的是，就算是这样，打印机还是不可以加上。不知道哪位高手可以赐教。我xp下的代码如下：请高手指点
PRINTER_INFO_2 pi2;
DRIVER_INFO_3 di3;
HANDLE hPrinter;

char* Environment=_TEXT("Windows NT x86");
char lpBuffer[MAX_PATH];

char lpDriverPath[MAX_PATH];
char lpDataFilePath[MAX_PATH];
char lpConfigFilePath[MAX_PATH];
char lpHelpFilePath[MAX_PATH];
char lpDependecy[MAX_PATH];

DWORD uSize=0;
CString str;
DWORD dwErr;
BOOL b;
char buffer[1024];

if (OpenPrinter("DRoad USB Printer",&hPrinter,NULL))
{
DeletePrinter(hPrinter);
ClosePrinter(hPrinter);
}
DeletePrinterDriver(NULL,"Windows NT x86","DRoad USB Printer");


GetPrinterDriverDirectory(NULL,Environment,1,(LPBYTE)lpBuffer,MAX_PATH,&uSize);
str.Format("lpBuffer is %s\n",lpBuffer);
AfxMessageBox(str);

lstrcpy(_TEXT(lpDriverPath),_TEXT(lpBuffer));
lstrcat(_TEXT(lpDriverPath),_TEXT("\\UNIDRV.DLL"));

lstrcpy(_TEXT(lpDataFilePath),_TEXT(lpBuffer));
lstrcat(_TEXT(lpDataFilePath),_TEXT("\\Dragon.GPD"));

lstrcpy(_TEXT(lpConfigFilePath),_TEXT(lpBuffer));
lstrcat(_TEXT(lpConfigFilePath),_TEXT("\\UNIDRVUI.DLL"));

lstrcpy(_TEXT(lpHelpFilePath),_TEXT(lpBuffer));
lstrcat(_TEXT(lpHelpFilePath),_TEXT("\\UNIDRV.HLP"));

memset(lpDependecy,0,sizeof(lpDependecy));
lstrcat(lpDependecy,_TEXT("Unires.dll\\0Stdname.gpd\\0Dragon.ini\\0Dragon.dll\\0Dragon.inf\\0\\0"));

char *q = lpDependecy;
lstrcpy(q, _T("Unires.dll"));
q += lstrlen(_T("Unires.dll"))+1;

lstrcpy(q, _T("Stdname.gpd"));
q += lstrlen(_T("Stdname.gpd"))+1;

lstrcpy(q, _T("Dragon.ini"));
q += lstrlen(_T("Dragon.ini"))+1;

lstrcpy(q, _T("Dragon.dll"));
q += lstrlen(_T("Dragon.dll"))+1;

lstrcpy(q, _T("Dragon.inf"));
q += lstrlen(_T("Dragon.inf"))+1;

ZeroMemory(&di3, sizeof(DRIVER_INFO_3));
di3.cVersion = 0x03;
di3.pName =_TEXT("DRoad USB Printer");
di3.pEnvironment = Environment;
di3.pDriverPath = lpDriverPath;
di3.pDataFile =lpDataFilePath;
di3.pConfigFile =lpConfigFilePath;
di3.pDependentFiles = lpDependecy;
di3.pHelpFile = lpHelpFilePath;
di3.pMonitorName = NULL;
di3.pDefaultDataType = _TEXT("RAW");

SetLastError(0);
if (!AddPrinterDriver(NULL, 3, (LPBYTE)&di3))
{
dwErr = GetLastError();
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,NULL,dwErr,NULL,buffer,sizeof(buffer),NULL);
MessageBox(buffer);
}

ZeroMemory(&pi2, sizeof(PRINTER_INFO_2));
pi2.pServerName=NULL;
pi2.pPrinterName = _TEXT("DRoad USB Printer");
pi2.pPortName = _TEXT("USB001");
pi2.pDriverName = _TEXT("DRoad USB Printer"); pi2.pPrintProcessor = _TEXT("WinPrint");
pi2.pDatatype = _TEXT("RAW");
pi2.AveragePPM = 18;

SetLastError(0);
if ((hPrinter = AddPrinter(NULL, 2, (LPBYTE)&pi2))==NULL)
{
dwErr = GetLastError();
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,NULL,dwErr, NULL,buffer,sizeof(buffer),NULL);
MessageBox(buffer);
}

ClosePrinter(hPrinter);

Pointer to a null-terminated string that specifies the files the driver depends on. Each file name in the string is also terminated with a null (for example, Pscript.dll\\0Qms810.PPD\\0Pscrptui.dll\\0Pspcriptui.hlp\\0Pstest.txt\\0\\0). MSDN说这些字符串要紧凑的存储在内存里，每个文件都要用结束符来隔开，解决这个问题可以用下面的代码：
char *q = lpDependecy;
lstrcpy(q, _T("file1.dll"));
q += lstrlen(_T("file1.dll"))+1;

lstrcpy(q, _T("file2.gpd"));
q += lstrlen(_T("file2.gpd"))+1;

lstrcpy(q, _T("file3.ini"));
q += lstrlen(_T("file3.ini"))+1;

lstrcpy(q, _T("file4.dll"));
q += lstrlen(_T("file4.dll"))+1;

lstrcpy(q, _T("file5.inf"));
q += lstrlen(_T("file5.inf"))+1;
不过头疼的是，就算是这样，打印机还是不可以加上。不知道哪位高手可以赐教。我xp下的代码如下：请高手指点
PRINTER_INFO_2 pi2;
DRIVER_INFO_3 di3;
HANDLE hPrinter;

char* Environment=_TEXT("Windows NT x86");
char lpBuffer[MAX_PATH];

char lpDriverPath[MAX_PATH];
char lpDataFilePath[MAX_PATH];
char lpConfigFilePath[MAX_PATH];
char lpHelpFilePath[MAX_PATH];
char lpDependecy[MAX_PATH];

DWORD uSize=0;
CString str;
DWORD dwErr;
BOOL b;
char buffer[1024];

if (OpenPrinter("DRoad USB Printer",&hPrinter,NULL))
{
DeletePrinter(hPrinter);
ClosePrinter(hPrinter);
}
DeletePrinterDriver(NULL,"Windows NT x86","DRoad USB Printer");


GetPrinterDriverDirectory(NULL,Environment,1,(LPBYTE)lpBuffer,MAX_PATH,&uSize);
str.Format("lpBuffer is %s\\n",lpBuffer);
AfxMessageBox(str);

lstrcpy(_TEXT(lpDriverPath),_TEXT(lpBuffer));
lstrcat(_TEXT(lpDriverPath),_TEXT("\\\\UNIDRV.DLL"));

lstrcpy(_TEXT(lpDataFilePath),_TEXT(lpBuffer));
lstrcat(_TEXT(lpDataFilePath),_TEXT("\\\\Dragon.GPD"));

lstrcpy(_TEXT(lpConfigFilePath),_TEXT(lpBuffer));
lstrcat(_TEXT(lpConfigFilePath),_TEXT("\\\\UNIDRVUI.DLL"));

lstrcpy(_TEXT(lpHelpFilePath),_TEXT(lpBuffer));
lstrcat(_TEXT(lpHelpFilePath),_TEXT("\\\\UNIDRV.HLP"));

memset(lpDependecy,0,sizeof(lpDependecy));
lstrcat(lpDependecy,_TEXT("Unires.dll\\0Stdname.gpd\\0Dragon.ini\\0Dragon.dll\\0Dragon.inf\\0\\0"));

char *q = lpDependecy;
lstrcpy(q, _T("Unires.dll"));
q += lstrlen(_T("Unires.dll"))+1;

lstrcpy(q, _T("Stdname.gpd"));
q += lstrlen(_T("Stdname.gpd"))+1;

lstrcpy(q, _T("Dragon.ini"));
q += lstrlen(_T("Dragon.ini"))+1;

lstrcpy(q, _T("Dragon.dll"));
q += lstrlen(_T("Dragon.dll"))+1;

lstrcpy(q, _T("Dragon.inf"));
q += lstrlen(_T("Dragon.inf"))+1;

ZeroMemory(&di3, sizeof(DRIVER_INFO_3));
di3.cVersion = 0x03;
di3.pName =_TEXT("DRoad USB Printer");
di3.pEnvironment = Environment;
di3.pDriverPath = lpDriverPath;
di3.pDataFile =lpDataFilePath;
di3.pConfigFile =lpConfigFilePath;
di3.pDependentFiles = lpDependecy;
di3.pHelpFile = lpHelpFilePath;
di3.pMonitorName = NULL;
di3.pDefaultDataType = _TEXT("RAW");

SetLastError(0);
if (!AddPrinterDriver(NULL, 3, (LPBYTE)&di3))
{
dwErr = GetLastError();
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,NULL,dwErr,NULL,buffer,sizeof(buffer),NULL);
MessageBox(buffer);
}

ZeroMemory(&pi2, sizeof(PRINTER_INFO_2));
pi2.pServerName=NULL;
pi2.pPrinterName = _TEXT("DRoad USB Printer");
pi2.pPortName = _TEXT("USB001");
pi2.pDriverName = _TEXT("DRoad USB Printer"); pi2.pPrintProcessor = _TEXT("WinPrint");
pi2.pDatatype = _TEXT("RAW");
pi2.AveragePPM = 18;

SetLastError(0);
if ((hPrinter = AddPrinter(NULL, 2, (LPBYTE)&pi2))==NULL)
{
dwErr = GetLastError();
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,NULL,dwErr, NULL,buffer,sizeof(buffer),NULL);
MessageBox(buffer);
}

ClosePrinter(hPrinter);

怎么会这样啊