I have a simple application written in C++ for print the Html's documments. This program is based on RawPrinter c++ example by MSDN.
When i use the LEXMARK printer with PostScript driver, i have sucess but when i use the HP LaserJet P3015, it's not works and my document is printed with the html tags.
I tried some settings for HP printer but i don't have success.
I'm using the datatype "RAW".
Why the Lexmark printer works and the HP printer not works?
My S.O is a windows 7x 64.
int main()
{
HANDLE hPrinter;
BOOL lOpen = OpenPrinter((LPSTR)printerName,&hPrinter,NULL);
if( !lOpen )
{
printLastSOError(os_errorMsg);
return -3;
};
// prepare printer to send data (RAW)
DOC_INFO_1 DocInfo;
DocInfo.pDocName = "teste printer";
DocInfo.pOutputFile = NULL;
DocInfo.pDatatype = "RAW";
// Start Job Printer
DWORD dwJob = StartDocPrinter( hPrinter, 1, (LPBYTE)&DocInfo );
if( dwJob == 0 )
{
printLastSOError( os_errorMsg );
ClosePrinter(hPrinter);
return -4;
};
// Execute JOB
char buff[bufferSize];
DWORD nReaded;
while( ReadFile(hFile,buff,bufferSize,&nReaded,0) )
{
if( nReaded ==0 )
break;
DWORD dwBytesWritten;
if( !WritePrinter( hPrinter, buff, nReaded, &dwBytesWritten ) )
{
printLastSOError(os_errorMsg);
break;
};
};
EndDocPrinter(hPrinter);
ClosePrinter(hPrinter);
return 0;
}
Thanks.
Best Regards.
Paulo
Related
I have installed a HP Printer and added it to my list of Printer devices.
I am trying to use the following code:
QString printerName = "HP Designjet 500 24+HPGL2 Card";
DWORD infoSize, numBytes;
HANDLE hPrinter;
bool ok = OpenPrinter( ( LPWSTR )printerName.utf16(), ( LPHANDLE )&hPrinter, 0 );
if ( !ok )
{
qErrnoWarning( "QWin32PrintEngine::initialize: OpenPrinter failed" );
return;
}
GetPrinter( hPrinter, 2, NULL, 0, &infoSize );
HGLOBAL hMem;
hMem = GlobalAlloc( GHND, infoSize );
PRINTER_INFO_2 *pInfo;
pInfo = ( PRINTER_INFO_2* )GlobalLock( hMem );
ok = GetPrinter( hPrinter, 2, ( LPBYTE )pInfo, infoSize, &numBytes );
if ( !ok )
{
qErrnoWarning( "QWin32PrintEngine::initialize: GetPrinter failed" );
}
DEVMODE *devMode;
devMode = pInfo->pDevMode;
HDC hdc = NULL;
hdc = CreateDC( NULL, ( LPCWSTR )printerName.utf16(), 0, devMode );
Now,the CreateDC() method fails.I even tried to return the Error using GetLastError() method, and it returned as "203",which corresponds to "ERROR_ENVVAR_NOT_FOUND".
I am completely clueless as of now.
I would be really glad,if someone can help me regarding this.
Thanks in Advance.
I'm trying to add accessibility support to the WC_LISTVIEW control in my Win32/MFC application. I'm using Windows Narrator tool in Windows 10 to test the results. And by default it only reads the main item name of a selected row. For instance, in this case:
it will read only the country, when I need it to read the whole line.
So I found that I can set up a Server annotation for the list-view control using this example.
I would first set it up as such:
CAccPropServer_ListView* pMyPropSrv = NULL;
HRESULT hr;
CComPtr<IAccPropServices> pAccPropSvc = NULL;
hr = ::CoCreateInstance(CLSID_AccPropServices, NULL, CLSCTX_SERVER, IID_IAccPropServices, (void **)&pAccPropSvc);
if(SUCCEEDED(hr) &&
pAccPropSvc )
{
pMyPropSrv = new (std::nothrow) CAccPropServer_ListView( pAccPropSvc );
if( pMyPropSrv )
{
MSAAPROPID propids[] = {
PROPID_ACC_NAME,
};
hr = pAccPropSvc->SetHwndPropServer( hWndListCtrl, OBJID_CLIENT,
CHILDID_SELF, propids, 1, pMyPropSrv, ANNO_CONTAINER);
pMyPropSrv->Release();
}
}
where the CAccPropServer_ListView class does all the work:
class CAccPropServer_ListView: public IAccPropServer
{
ULONG m_Ref;
IAccPropServices * m_pAccPropSvc;
public:
CAccPropServer_ListView( IAccPropServices * pAccPropSvc )
: m_Ref( 1 ),
m_pAccPropSvc( pAccPropSvc )
{
m_pAccPropSvc->AddRef();
}
~CAccPropServer_ListView()
{
m_pAccPropSvc->Release();
}
/* TODO: Addref/Release/QI go here...
Skipped them for brevity...
*/
HRESULT STDMETHODCALLTYPE GetPropValue (const BYTE * pIDString,
DWORD dwIDStringLen, MSAAPROPID idProp, VARIANT * pvarValue,
BOOL * pfGotProp )
{
if(!pfGotProp)
return E_POINTER;
pvarValue->vt = VT_EMPTY;
*pfGotProp = FALSE;
HWND hwnd;
DWORD idObject;
DWORD idChild;
if( S_OK != m_pAccPropSvc->DecomposeHwndIdentityString( pIDString,
dwIDStringLen, &hwnd, &idObject, &idChild ) )
{
return S_OK;
}
if( idChild != CHILDID_SELF )
{
if( idProp == PROPID_ACC_NAME )
{
CString str;
str.Format(L"Line index %d", idChild);
BSTR bstr = ::SysAllocString((LPCTSTR)str.GetString());
pvarValue->vt = VT_BSTR;
pvarValue->bstrVal = bstr;
*pfGotProp = TRUE;
}
}
return S_OK;
}
};
So my question is concerning GetPropValue method above that actually generates the text prompt for Narrator to read out loud.
How do I get an index of a row read by the Narrator from the idChild that is returned by DecomposeHwndIdentityString?
In my example above, purely experimentally, I was getting the following values:
"Line index 17"
"Line index 33"
"Line index 49"
"Line index 65"
and so on
which would translate to 0x11, 0x21, 0x31, 0x41 that are not row indexes. Are those IDs documented anywhere for a SysListView32?
I am developing a ELM327 Simulator device(http://en.wikipedia.org/wiki/ELM327) using VC++ in MFC..It implements Serial port communication with my PC and tab..My Pc contains BLuetooth plugged into it and the device (tab) is being paired with my PC..My program should send the required result for the received response..
Eg:
For Speed, Command : 010D should respond with output 41 0D 12
My problrm is that it is not receiving response from PC after sending command..What could probably the reason be..
Thanks to All
My code For ReceiveData is Like This.
LRESULT CELM327SimDlg::OnReceiveData(WPARAM wParam, LPARAM lParam)
{
int iLen = (int)wParam; // iLen has value 5
LPBYTE lpDataBuffer = (LPBYTE)lParam;
//lpDataBuffer has value AT Z
// Parse and handle the received here.
WORD wCmd = m_ELM327Cmd.ParseAndGetCmd(lpDataBuffer, iLen); //Goes to ParseAndGetCmd function
if( ELM327_CMD_SUP_CMD == wCmd ) //If condition fails program control goes to else part
{
for( int i = 0; i < 3; i++ )
{
m_objSerialPort.SendData(m_ELM327Cmd.GetSupBuf(i), m_ELM327Cmd.GetSupBufLen());
}
}
else
{
DWORD dwData = 0;
switch(wCmd) // Not getting to switch block
{
case ELM327_CMD_RPM:
dwData = m_ctrlRPMSlider.GetPos();
break;
case ELM327_CMD_SPEED:
dwData = m_ctrlSpeedSlider.GetPos();
break;
case ELM327_CMD_MAF:
dwData = m_ctrlMAFSlider.GetPos();
break;
case ELM327_CMD_FUELLVL:
dwData = m_ctrlFuelSlider.GetPos();break;
default:break;
}
if(m_ELM327Cmd.SetResponse(wCmd, dwData)) //Program calling SetResponse function.
{
m_objSerialPort.SendData(m_ELM327Cmd.GetResponseBuf(), m_ELM327Cmd.GetResponseLen());
}
}
if( NULL != lpDataBuffer )
{
delete [] lpDataBuffer;
lpDataBuffer = NULL;
}
return 0;
}
SendData Function is as follows
// Send data to comport
void CSerialPort::SendData(LPBYTE lpBuffer, DWORD dwBytes)
{
if(m_bConnected)
{
if( NULL == lpBuffer || dwBytes == 0 )
{
return;
}
LPBYTE lpDataBuffer = new BYTE[dwBytes];
if( NULL == lpDataBuffer )
{
return;
}
CopyMemory(lpDataBuffer, lpBuffer, dwBytes );
::PostMessage( m_hWnd, UWM_SEND_DATA, (WPARAM)dwBytes, (LPARAM)lpDataBuffer );
}
return;
}
How do I find the port name for a bluetooth device with a specific device name?
I have this code, which enumerates all bluetooth devices, but doesn't give me their port name:
HBLUETOOTH_DEVICE_FIND founded_device;
BLUETOOTH_DEVICE_INFO device_info;
device_info.dwSize = sizeof(device_info);
BLUETOOTH_DEVICE_SEARCH_PARAMS search_criteria;
search_criteria.dwSize = sizeof(BLUETOOTH_DEVICE_SEARCH_PARAMS);
search_criteria.fReturnAuthenticated = TRUE;
search_criteria.fReturnRemembered = FALSE;
search_criteria.fReturnConnected = FALSE;
search_criteria.fReturnUnknown = FALSE;
search_criteria.fIssueInquiry = FALSE;
search_criteria.cTimeoutMultiplier = 0;
founded_device = BluetoothFindFirstDevice(&search_criteria, &device_info);
if(founded_device == NULL)
return -1;
do {
wstring ws = device_info.szName;
cout << string(ws.begin(), ws.end()) << endl;
} while (BluetoothFindNextDevice(founded_device, &device_info));
And then I have this code, which enumerates all port names but doesn't give me the device name:
DWORD bytesNeeded = 0;
DWORD portCount = 0;
BOOL ret = EnumPorts(nullptr, 2, nullptr, 0, &bytesNeeded, &portCount);
BYTE *ports = new BYTE[bytesNeeded];
if(EnumPorts(nullptr, 2, (LPBYTE)ports, bytesNeeded, &bytesNeeded, &portCount))
{
PORT_INFO_2 *portInfo = (PORT_INFO_2*)ports;
for(DWORD i = 0; i < portCount; ++i)
cout << portInfo[i].pPortName << endl;
}
delete [] ports;
I need to automatically connect to a specific device when my app is started, so I need to either get the port name for the bluetooth device in the first piece of code so I can connect to it, or check each portname in the second piece of code to make sure it's the right device before connecting to it.
How do I do it?
I remember struggling with this in the past.
the only solution i found was to use sockets for communicating with the Bluetooth device using its address, then use the send() and recv() methods for communicating with the device.
// assuming you have the BT device address in blueToothDeviceAddr;
char blueToothDeviceAddr[18];
SOCKET sock;
SOCKADDR_BTH sa = { 0,0,0,0 };
int sa_len = sizeof(sa);
// initialize windows sockets
WORD wVersionRequested;
WSADATA wsaData;
wVersionRequested = MAKEWORD( 2, 0 );
if( WSAStartup( wVersionRequested, &wsaData ) != 0 )
{
ExitProcess(100);
}
// parse the specified Bluetooth address
if( SOCKET_ERROR == WSAStringToAddress( blueToothDeviceAddr, AF_BTH,
NULL, (LPSOCKADDR) &sa, &sa_len ) )
{
ExitProcess(101);
}
// query it for the right port
// create the socket
sock = socket(AF_BTH, SOCK_STREAM, BTHPROTO_RFCOMM);
if( SOCKET_ERROR == sock )
{
ExitProcess(102);
}
// fill in the rest of the SOCKADDR_BTH struct
GUID pService = (GUID)SerialPortServiceClass_UUID;
SOCKADDR_BTH outSA;
sa.port = SDPGetPort(blueToothDeviceAddr, (LPGUID) &pService,&outSA);
if( sa.port == 0 )
{
ExitProcess(103);
}
// in case you have a pass code you need to register for authetication callback
// look the web for this part
// connect to the device
if( SOCKET_ERROR == connect( sock, (LPSOCKADDR) &outSA, sa_len ) )
{
int lastError = GetLastError();
ExitProcess(105);
}
Under the key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\BTHENUM
you can find a subkey which has a list of keys containing the device address.
Under this last key, you can find a subkey named Device Parameters which finally has the PortName value.
The code is written in C++ with MFC libraries and is tested under Windows XP, 7 and 10. I hope it helps you !
// Returns the outgoing COM port of a bluetooth device given by address
int GetBluetoothCOM( CString sAddr )
{
int iPort = 0;
HKEY hKey_1;
DWORD KeyNdx_1 = 0;
DWORD MaxKeyLen_1;
char KeyNam_1[ MAX_PATH + 1 ];
LONG RetVal_1;
sAddr.MakeUpper();
sAddr.Replace( ":", "" );
sAddr.Replace( " ", "" );
// Enumerate keys under: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\BTHENUM
RegOpenKeyEx( HKEY_LOCAL_MACHINE, "SYSTEM\\CurrentControlSet\\Enum\\BTHENUM", NULL, KEY_READ | KEY_ENUMERATE_SUB_KEYS, &hKey_1 );
while( true )
{
MaxKeyLen_1 = MAX_PATH;
RetVal_1 = RegEnumKeyEx( hKey_1, KeyNdx_1, KeyNam_1, &MaxKeyLen_1, NULL, NULL, NULL, NULL );
if( RetVal_1 == ERROR_NO_MORE_ITEMS )
{
break;
}
if( RetVal_1 == ERROR_SUCCESS )
{
HKEY hKey_2;
DWORD KeyNdx_2 = 0;
DWORD MaxKeyLen_2;
char KeyNam_2[ MAX_PATH + 1 ];
LONG RetVal_2;
// Enumerate subkeys
RegOpenKeyEx( HKEY_LOCAL_MACHINE, "SYSTEM\\CurrentControlSet\\Enum\\BTHENUM\\" + CString( KeyNam_1 ), NULL, KEY_READ | KEY_ENUMERATE_SUB_KEYS, &hKey_2 );
while( true )
{
MaxKeyLen_2 = MAX_PATH;
RetVal_2 = RegEnumKeyEx( hKey_2, KeyNdx_2, KeyNam_2, &MaxKeyLen_2, NULL, NULL, NULL, NULL );
if( RetVal_2 == ERROR_NO_MORE_ITEMS )
{
break;
}
if( RetVal_2 == ERROR_SUCCESS )
{
// Find out if the key name contains &ADDRESS_
CString sKey = "SYSTEM\\CurrentControlSet\\Enum\\BTHENUM\\" + CString( KeyNam_1 ) + "\\" + CString( KeyNam_2 );
sKey.MakeUpper();
if( sKey.Find( "&" + sAddr + "_" ) != -1 )
{
HKEY hKey;
char szPort[ 100 + 1 ];
DWORD dwLen = 100;
// I find out the device
RegOpenKeyEx( HKEY_LOCAL_MACHINE, sKey + "\\Device Parameters", 0, KEY_READ, &hKey );
if( RegQueryValueEx( hKey, "PortName", NULL, NULL, ( LPBYTE ) &szPort, &dwLen ) == ERROR_SUCCESS )
{
szPort[ dwLen ] = 0;
CString sPort = CString( szPort );
sPort.MakeUpper();
if( sPort.Find( "COM" ) == -1 )
{
RegCloseKey( hKey );
continue;
}
sPort.Replace( "COM", "" );
sPort.Trim();
iPort = atoi( sPort.GetBuffer() );
if( iPort != 0 )
{
RegCloseKey( hKey );
break;
}
}
RegCloseKey( hKey );
}
}
++KeyNdx_2;
}
RegCloseKey( hKey_2 );
if( iPort != 0 )
{
break;
}
}
++KeyNdx_1;
};
RegCloseKey( hKey_1 );
return iPort;
}
I am having trouble starting my service on my pc. My code is based on this article http://www.gamedev.net/reference/articles/article1899.asp
When i call installService from my int main(int argc, char *argv[]), it is registered successfully (i can see it in msconfig and services.msc). However it has not started. I manually start the service via services.msv and i get the error "Error 2: system cannot find the file specified". Why is this? i registered the services no more then a min ago, my external HD is still on (where this is currently stored. i'll move a nondev version to c:/ when its ready) What am i doing wrong and is there another tutorial i can look at (i only found the one linked via google)
#define srvName "MyTestService_01312009"
void installService(char*path)
{
SC_HANDLE handle = ::OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS );
SC_HANDLE service = ::CreateService(
handle,
srvName,
"MyTestService_01312009b",
GENERIC_READ | GENERIC_EXECUTE,
SERVICE_WIN32_OWN_PROCESS,
SERVICE_AUTO_START,
SERVICE_ERROR_IGNORE,
path,
NULL,
NULL,
NULL,
NULL,
NULL
);
}
void uninstallService()
{
SC_HANDLE handle = ::OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS );//?
SC_HANDLE service = ::OpenService( handle, srvName, DELETE );
if( service != NULL )
{
// remove the service!
::DeleteService( service );
}
}
SERVICE_STATUS_HANDLE hStatus;
SERVICE_STATUS status;
/*
if( ::StartServiceCtrlDispatcher( dispatchTable ) == 0 )
{
// if this fails, it's probably because someone started us from
// the command line. Print a message telling them the "usage"
}
*/
void WINAPI ServiceCtrlHandler( DWORD control )
{
switch( control )
{
case SERVICE_CONTROL_SHUTDOWN:
case SERVICE_CONTROL_STOP:
// do shutdown stuff here
status.dwCurrentState = SERVICE_STOPPED;
status.dwWin32ExitCode = 0;
status.dwCheckPoint = 0;
status.dwWaitHint = 0;
break;
case SERVICE_CONTROL_INTERROGATE:
// just set the current state to whatever it is...
break;
}
::SetServiceStatus( hStatus, &status );
}
void WINAPI ServiceDispatch( DWORD numArgs, char **args )
{
// we have to initialize the service-specific stuff
memset( &status, 0, sizeof(SERVICE_STATUS) );
status.dwServiceType = SERVICE_WIN32;
status.dwCurrentState = SERVICE_START_PENDING;
status.dwControlsAccepted = SERVICE_ACCEPT_STOP;
hStatus = ::RegisterServiceCtrlHandler( srvName, &ServiceCtrlHandler );
// more initialization stuff here
FILE *f = fopen("c:/testSrv.bin", "wb");
::SetServiceStatus( hStatus, &status );
}
SERVICE_TABLE_ENTRY dispatchTable[] =
{
{ srvName, &ServiceDispatch },
{ NULL, NULL }
};
Maybe you can use Process Monitor to find out what's wrong.
Start it, and look for NAME NOT FOUND results that occur in connection with the service start.