C/C++/MFC 获取打印机状态和控制打印机打印txt文件

[wb_rock]

void PrintError( DWORD dwError, LPCTSTR lpString )  
{  
#define MAX_MSG_BUF_SIZE 512   
	TCHAR   *msgBuf;  
	DWORD   cMsgLen;  

	cMsgLen = FormatMessage( FORMAT_MESSAGE_FROM_SYSTEM |  
		FORMAT_MESSAGE_ALLOCATE_BUFFER | 40, NULL, dwError,  
		MAKELANGID(0, SUBLANG_ENGLISH_US), (LPTSTR) &msgBuf,  
		MAX_MSG_BUF_SIZE, NULL );  
	printf( TEXT("%s Error [%d]:: %s\n"), lpString, dwError, msgBuf );  
	LocalFree( msgBuf );  
#undef MAX_MSG_BUF_SIZE   
}  
// end PrintError   
// **********************************************************************   

// **********************************************************************   
// ReadFileWithAlloc - allocates memory for and reads contents of a file   
//    
// Params:   
//   szFileName   - NULL terminated string specifying file name   
//   pdwSize      - address of variable to receive file bytes size   
//   ppBytes      - address of pointer which will be allocated and contain file bytes   
//    
// Returns: TRUE for success, FALSE for failure.   
//   
// Notes: Caller is responsible for freeing the memory using GlobalFree()   
//    
BOOL ReadFileWithAlloc( LPTSTR szFileName, LPDWORD pdwSize, LPBYTE *ppBytes )  
{  
	HANDLE      hFile;  
	DWORD       dwBytes;  
	BOOL        bSuccess = FALSE;  

	// Validate pointer parameters   
	if( ( pdwSize == NULL ) || ( ppBytes == NULL ) )  
		return FALSE;  
	// Open the file for reading   
	hFile = CreateFile( szFileName, GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );  
	if( hFile == INVALID_HANDLE_VALUE )  
	{  
		PrintError( GetLastError(), TEXT("CreateFile()") );  
		return FALSE;  
	}  
	// How big is the file?   
	*pdwSize = GetFileSize( hFile, NULL );  
	if( *pdwSize == (DWORD)-1 )  
		PrintError( GetLastError(), TEXT("GetFileSize()") );  
	else  
	{  
		// Allocate the memory   
		*ppBytes = (LPBYTE)GlobalAlloc( GPTR, *pdwSize );  
		if( *ppBytes == NULL )  
			PrintError( GetLastError(), TEXT("Failed to allocate memory\n") );  
		else  
		{  
			// Read the file into the newly allocated memory   
			bSuccess = ReadFile( hFile, *ppBytes, *pdwSize, &dwBytes, NULL );  
			if( ! bSuccess )  
				PrintError( GetLastError(), TEXT("ReadFile()") );  
		}  
	}  
	// Clean up   
	CloseHandle( hFile );  
	return bSuccess;  
}  
// End ReadFileWithAlloc   
// **********************************************************************   

// **********************************************************************   
// RawDataToPrinter - sends binary data directly to a printer   
//    
// Params:   
//   szPrinterName - NULL terminated string specifying printer name   
//   lpData        - Pointer to raw data bytes   
//   dwCount       - Length of lpData in bytes   
//    
// Returns: TRUE for success, FALSE for failure.   
//    
BOOL RawDataToPrinter( LPTSTR szPrinterName, LPBYTE lpData, DWORD dwCount )  
{  
	HANDLE     hPrinter;  
	DOC_INFO_1 DocInfo;  
	DWORD      dwJob;  
	DWORD      dwBytesWritten;  

	// Need a handle to the printer.   
	if( ! OpenPrinter( szPrinterName, &hPrinter, NULL ) )  
	{  
		PrintError( GetLastError(), TEXT("OpenPrinter") );  
		return FALSE;  
	}  

	// Fill in the structure with info about this "document."   
	DocInfo.pDocName = TEXT("sql - 记事本");  
	DocInfo.pOutputFile = NULL;  
	 DocInfo.pDatatype = TEXT("RAW");  
	//DocInfo.pDatatype = TEXT("PMJOURNAL");  
	// Inform the spooler the document is beginning.   
	if( (dwJob = StartDocPrinter( hPrinter, 1, (LPBYTE)&DocInfo )) == 0 )  
	{  
		PrintError( GetLastError(), TEXT("StartDocPrinter") );  
		ClosePrinter( hPrinter );  
		return FALSE;  
	}  
	// Start a page.   

	if( ! StartPagePrinter( hPrinter ) )  
	{  
		PrintError( GetLastError(), TEXT("StartPagePrinter") );  
		EndDocPrinter( hPrinter );  
		ClosePrinter( hPrinter );  
		return FALSE;  
	}  
	// Send the data to the printer.   
	if( ! WritePrinter( hPrinter, lpData, dwCount, &dwBytesWritten ) )  
	{  
		PrintError( GetLastError(), TEXT("WritePrinter") );  
		EndPagePrinter( hPrinter );  
		EndDocPrinter( hPrinter );  
		ClosePrinter( hPrinter );  
		return FALSE;  
	}  
	// End the page.   
	if( ! EndPagePrinter( hPrinter ) )  
	{  
		PrintError( GetLastError(), TEXT("EndPagePrinter") );  
		EndDocPrinter( hPrinter );  
		ClosePrinter( hPrinter );  
		return FALSE;  
	}  
	// Inform the spooler that the document is ending.   
	if( ! EndDocPrinter( hPrinter ) )  
	{  
		PrintError( GetLastError(), TEXT("EndDocPrinter") );  
		ClosePrinter( hPrinter );  
		return FALSE;  
	}  
	// Tidy up the printer handle.   
	ClosePrinter( hPrinter );  
	// Check to see if correct number of bytes were written.   
	if( dwBytesWritten != dwCount )  
	{  
		printf( TEXT("Wrote %d bytes instead of requested %d bytes.\n"), dwBytesWritten, dwCount );  
		return FALSE;  
	}  
	return TRUE;  
}  
// End RawDataToPrinter   
// **********************************************************************   

// **********************************************************************   
// main - entry point for this console application   
//    
// Params:   
//   argc        - count of command line arguments   
//   argv        - array of NULL terminated command line arguments   
//   
// Returns: 0 for success, non-zero for failure.   
//    
// Command line: c:\>RawPrint PrinterName FileName   
//               sends raw data file to printer using spooler APIs   
//               written nov 1999 jmh   
//   

int main( int argc, char* argv[] )  
{  
	
	LPBYTE  pBytes = NULL;  
	DWORD   dwSize = 0;
	TCHAR szDefaultPrinter[1024]={0}; // 保存默认打印机名称
	DWORD dwLen = 1024;
	int ret = ::GetDefaultPrinter(szDefaultPrinter, &dwLen);
	printf("Default Printer Name: %s\n", szDefaultPrinter);
#if 1
//	if( argc != 3 )  
//		return printf( TEXT("Syntax: %s <PrinterName> <FileName>\n"), argv[0] );  

	printf( TEXT("Attempting to send file [%s] to printer [%s].\n")
		, szDefaultPrinter, "d:\\sql.txt");  

	// if( ! ReadFileWithAlloc( argv[2], &dwSize, &pBytes ) )  
	if( ! ReadFileWithAlloc("D:\\sql.txt", &dwSize, &pBytes ) )  
		return printf( TEXT("Failed to allocate memory for and read file [%s].\n"), "d:\\sql.txt" ); 
	printf("[FILE]: dwSize = %d\n context = %s\n", dwSize, pBytes);

	if( ! RawDataToPrinter(szDefaultPrinter, pBytes, dwSize ) )  
		printf( TEXT("Failed to send data to printer.\n") );  
	else  
		printf( TEXT("Data sent to printer.\n") );  

	GlobalFree( (HGLOBAL)pBytes );  

#endif

[wb_rock]

目前程序可以把文件添加到打印机序列中，但是一直提示“正在打印”，然后过一会就完了，结果没有打印出文件。打印机状态均正常。

[赵4老师]

MSDN98_1.ISO http://pan.baidu.com/s/1dDF41ix, MSDN98_2.ISO http://pan.baidu.com/s/1bnGo0Vl 先下载安装MSDN98 再参考 MSDN98\SAMPLES\VC98\SDK\GRAPHICS\GDI\PRINTER\*.*

[wb_rock]

// Send the data to the printer. // szPrinterName - NULL terminated string specifying printer name // lpData - Pointer to raw data bytes // dwCount - Length of lpData in bytes WritePrinter( hPrinter, lpData, dwCount, &dwBytesWritten ) lpData raw data bytes怎么理解，我用CreateFile读取的txt文件，打印不出来

[cqzj70]

楼主的代码是用来测试打印机物理状态的