Compile Error Newb: cannot convert char to lpcwstr
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wrote on 28 Nov 2014, 14:06 last edited by
Hello Community,
iam new in working with QT.
I only want to compile some Code for my 64bit machine.
I loaded the code but if i compile it i get the following failure in the code:
@/**
Opens the COMM Port.
@param port Port number. COMM1 = 1, COMM2 = 2, etc.
@param baud Baud rate, in BPS. Commonly 9600, 38400, etc.
@param HwFc Set to non-zero to use hardware flow-control, or zero
for no flow control.
@param hwnd Window handle to recieve MESS_SERIAL messages. If set to NULL,
you can still get characters using SerialGetChar().
@return TRUE if port was opened, FALSE if opening failed.
*/
BOOL OpenPort(int port,long baud,int HwFc, HWND hwnd)
{
HANDLE Comport;
DCB myDCB;
COMMTIMEOUTS CTout;
char str[100];FlowControl = HwFc;
// Open the serial port
if (port > 9)
sprintf(str,"\\.\COM%d",port);
else
sprintf(str,"COM%d",port);
Comport = CreateFile(str,GENERIC_READ|GENERIC_WRITE,0,NULL,OPEN_EXISTING,0,NULL);
if (Comport == INVALID_HANDLE_VALUE)
return FALSE;
// Configure Serial port (Setup Comm)
if (!SetupComm(Comport,350,350)) // Buffer sizes
return FALSE;// setup DCB using current values
if (!GetCommState(Comport,&myDCB))
return FALSE;
myDCB.fInX = FALSE; // Turn off xon/xoff handler
myDCB.fOutX = FALSE;
myDCB.fOutxDsrFlow = FALSE;
if (HwFc) // no flow control
{
myDCB.fOutxCtsFlow = TRUE; // no hardware flow control.
myDCB.fRtsControl = RTS_CONTROL_HANDSHAKE;
}
else
{
myDCB.fOutxCtsFlow = FALSE; // no hardware flow control.
}myDCB.BaudRate = baud;
myDCB.DCBlength = sizeof(DCB);
myDCB.fBinary = 1;
myDCB.fParity = 0;
myDCB.fDtrControl = DTR_CONTROL_DISABLE;
myDCB.fDsrSensitivity = 0;
myDCB.fTXContinueOnXoff = 1;
myDCB.fNull = 0;
myDCB.fRtsControl = RTS_CONTROL_DISABLE;
myDCB.fDummy2 = 0;
myDCB.wReserved = 0;
myDCB.Parity = NOPARITY;
myDCB.StopBits = ONESTOPBIT;
myDCB.wReserved1 = 0;
myDCB.ByteSize = 8;if (!SetCommState(Comport,&myDCB))
{
ShowLastError();
return FALSE;
}// Set timeouts//CTout.ReadIntervalTimeout = 0xffffffff;
CTout.ReadIntervalTimeout = MAXDWORD;
CTout.ReadTotalTimeoutMultiplier = 0;
CTout.ReadTotalTimeoutConstant = 0;
CTout.WriteTotalTimeoutMultiplier = 0;
CTout.WriteTotalTimeoutConstant = 5000; // don't hang if CTS is locked, for exampleSetCommTimeouts(Comport,&CTout);
EscapeCommFunction(Comport,SETDTR);
PurgeComm(Comport,PURGE_TXCLEAR | PURGE_RXCLEAR);handle = hwnd;
SerialPort = Comport;
StartCommThread();return TRUE;
}@Failure:
C:\Qt\Tools\QtCreator\bin\untitled\serial.cpp:262: Fehler: cannot convert 'char*' to 'LPCWSTR {aka const wchar_t*}' for argument '1' to 'void* CreateFileW(LPCWSTR, DWORD, DWORD, LPSECURITY_ATTRIBUTES, DWORD, DWORD, HANDLE)'
Comport = CreateFile(str,GENERIC_READ|GENERIC_WRITE,0,NULL,OPEN_EXISTING,0,NULL);
^Can anybody say what can I change that it will work?
The complete code is downloadable from "http://www.mikrocontroller.net/attachment/87079/fboot-win-devcpp-mod.zip":http://www.mikrocontroller.net/attachment/87079/fboot-win-devcpp-mod.zip -
wrote on 28 Nov 2014, 14:14 last edited by
You try to pass a char 'str' to a function (createFile) that expects a LPCWSTR as type.
Try it with C-cast:
@CreateFile((LPCWSTR)str,GENERIC_READ|GENERIC_WRITE,0,NULL,OPEN_EXISTING,0,NULL);@ -
Just use CreateFileA .
BTW: Look on
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