function call

[Walsi]

In a slot function of a class a want to call another function of this class.

When I do this, I got following exception at the linking process:

undefined reference to `ClientSocket::myDecodeTcpMsg(unsigned long, unsigned char*)'
 
*** Exited with status: 2 ***

undefined reference to `ClientSocket::myDecodeTcpMsg(unsigned long, unsigned char*)'

*** Exited with status: 2 ***

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Here are some fragments of my Source Code:

void ClientSocket::readRequest()
{
	char TcpBuffer[1500];
	qint64 Size;
	qint64 result_code;
	dword dwMsgLength;
 
	Size = bytesAvailable();
	result_code = read ((char *) TcpBuffer, Size);
 
	dwMsgLength = Size;
 
	myDecodeTcpMsg (dwMsgLength, (unsigned char *) TcpBuffer);
}

void ClientSocket::readRequest()
{
	char TcpBuffer[1500];
	qint64 Size;
	qint64 result_code;
	dword dwMsgLength;

	Size = bytesAvailable();
	result_code = read ((char *) TcpBuffer, Size);

	dwMsgLength = Size;

	myDecodeTcpMsg (dwMsgLength, (unsigned char *) TcpBuffer);
}

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Here is the slot function readRequest in which I want to call the function myDecodeTcpMsg(...)

connect(this, SIGNAL(readyRead()), this, SLOT(readRequest()));

connect(this, SIGNAL(readyRead()), this, SLOT(readRequest()));

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Here is the Signal & Slot connection which "enables" the readRequest() function

class ClientSocket : public QTcpSocket
{
    Q_OBJECT
 
public:
    ClientSocket(QObject *parent = 0);
 
    void myDecodeTcpMsg(dword dwLength, byte* pbData);
 
signals:
    void sendResponseSignal();
 
private slots:
    void readRequest();
 
private:
    quint16 nextBlockSize;
};

class ClientSocket : public QTcpSocket
{
    Q_OBJECT

public:
    ClientSocket(QObject *parent = 0);

    void myDecodeTcpMsg(dword dwLength, byte* pbData);

signals:
    void sendResponseSignal();

private slots:
    void readRequest();

private:
    quint16 nextBlockSize;
};

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The Headerfile looks like this!

[Methedrine]

I cannot see any implementation of a function called myDecodeTcpMsg, maybe you wanted to use myDecodeTcpControlMsg()?

[Walsi]

Yes that is my mistake!!!

Sorry

I already edited the last thread!

[Walsi]

I think a solve the problem for myself:

the Linker doesn't find the implementation of the called function.
And that is the reason why it stops the linking process.

void ClientSocket::myDecodeTcpControlMsg (dword dwLength, byte* pbData)
{
         ....
}

void ClientSocket::myDecodeTcpControlMsg (dword dwLength, byte* pbData)
{
         ....
}

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