A problem about Receiving integer arguments

marachli

Hello everybody...
I have a little problem with QT environment.... I want my application DataViewer.cpp to receive two integer arguments d1 , d2 from the user by argv then I want to employ them inside the main class DataViewer::DataViewer
I used this piece of code but it doesn't convert the Qstrings to integer:
@QStringList args = qApp->arguments();
int cc;
cc = args.size();
int d1,d2;
QString d1_str,d2_str;
d1_str = qApp->arguments().at(1);
d2_str = qApp->arguments().at(2);

bool result;
d1 = d1_str.toInt(&result, 10);
d2 = d2_str.toInt(&result, 10);@

Then I tried to use:

@QByteArray ba1 = d1_str.toLocal8Bit();
QByteArray ba2 = d2_str.toLocal8Bit();
const char *c_strd1 = ba1.data();
const char *c_strd2 = ba2.data();
d1= atoi (c_strd1);
d2= atoi (c_strd2);@

but I couldn't receive the integer values of d1, d2 like : DataViewer 1 3

Anybody can help me please...
Thank you.

[EDIT: code formatting, please wrap in @-tags, Vass]

Hostel

Why you use a atoi?
Try this:

@QStringList sl = a.arguments();
QString myString;
myString = sl.at( 1 );

int myInt;
myInt = b.toInt();

qDebug() << myInt; // integer value@

[EDIT: code formatting, please wrap in @-tags, Vass]

uranusjr

Because (as he said) he tried QString::toInt() but failed...

@marachli:
The snippet you provided should work just fine. I just created "a simple test case":https://gist.github.com/1215612 that works correctly on my machine.

lgeyer

A few annotations:

Please wrap your code with @ tags. This way it is formatted properly.
You should store the result of QCoreApplication::arguments(), because calling it is slow.

Besides that it should work as listed in your code snippet.

@
int main(int argc, char* argv[])
{
QApplication application(argc, argv);

QStringList arguments = application.arguments();

int firstArgument = arguments.at(1).toInt();
int secondArgument = arguments.at(2).toInt();

qDebug() << firstArgument << secondArgument;

return 0;

}@

marachli

@uranusjr thanks a lot ... it works with me and thank you everybody :)