DWORD to QSTRING

[digog]

Hello,

Has anyone an idea on how to convert a DWORD to a QSTRING to display in a lineEdit?

Thanks

[ChrisW67]

A DWORD is a typedef for unsigned long in Microsoft headers. Look at the QString::arg() or the QString::number() variants. How do you want to display it?

[digog]

I want to display it in a QLineEdit. I have a DWORD variable MPUSBGetDLLVersion and I want to display it just like this:

QLineEdit *lineEdit;
lineEdit = new QLineEdit;
lineEdit->setText(MPUSBGetDLLVersion);

but I need to convert the MPUSBGetDLLVersion to a QString first.
I'll take a look at the QString::arg() and the QString::number() variants.

Added after 58 minutes:

Ok, I write the code like this now:

DWORD temp = MPUSBGetDLLVersion();
lineEdit2->setText( tr("MPUSBAPI Version:%1.%2").arg(QString::number( HIWORD(temp),10))
.arg(QString::number(LOWORD(temp),10)));

When I display it I am getting the value MPUSBAPI Version:257.0 instead of MPUSBAPI Version:1.0. Anyone knows what I am doing wrong?

[wysota]

Looks like you need to shift the higher word to the right (257 = 256+1).

[digog]

Looks like you need to shift the higher word to the right (257 = 256+1).

How can I do it?

[wysota]

How can I do it?

Most likely using the C++ binary shift operator.

[ChrisW67]

From a quick Google it seems the version number is typically output in hexadecimal:
http://www.microchip.com/forums/m346499-print.aspx


temp = MPUSBGetDLLVersion();
cout << "DLL Version => " << std::hex << temp << endl;

in this case:

1010000

This version number may not be in any way related to the user-visible version number the DLL (i.e. the one you see in the Windows Properties panel).

[digog]

Thanks, problem resolved. the code now is:


DWORD temp = MPUSBGetDLLVersion();

int aux1 = HIWORD(temp)>>8;
int aux2 = HIWORD(temp) & 0xFF;
int aux3 = LOWORD(temp)>>8;
int aux4 = LOWORD(temp) & 0xFF;

lineEdit2->setText( tr("MPUSBAPI Version:%1.%2.%3.%4").arg(QString::number(aux1,10))
.arg(QString::number(aux2,10)).arg(QString::number (aux3,10))
.arg(QString::number(aux4,10)));

And it displays MPUSBAPI Version:1.1.0.0
I was using a new version of the dll and didn't know before.