QObject::startTimer: QTimer cannot have a negative interval

[iswaryasenthilkumar]

as yu said i did ..bt still i got same error
qint32 remoteseconds=60000
QObject::startTimer: QTimer cannot have a negative interval

The largest value qint16 can hold is 2^15-1 = 32767.

[wysota]

as yu said i did ..bt still i got same error
qint32 remoteseconds=60000
QObject::startTimer: QTimer cannot have a negative interval

Are you sure you are using the same variable and not locally shadowing the member/global variable you have elsewhere?

[iswaryasenthilkumar]

i declared qint32 checkremoteseconds in public (widget.h)
Public:
qint32 checkremoteseconds;
and assigning this 60000 by reading textfile
checkremoteseconds=stream.readLine().toInt();

Are you sure you are using the same variable and not locally shadowing the member/global variable you have elsewhere?

[jefftee]

You make it really hard for people to help you... Please post your widget.h and the file (widget.cpp?) where you read from the text file and assign your checkremoteseconds variable.

Also, what is the value of checkremoteseconds after you execute the line:

checkremoteseconds=stream.readLine().toInt();

checkremoteseconds=stream.readLine().toInt();

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[iswaryasenthilkumar]

sure .. jthomps
widget.h:

#ifndef WIDGET_H
#define WIDGET_H
#include<QtGui>
#include <QWidget>
namespace Ui {
class Widget;
}
 
class Widget : public QWidget
{
    Q_OBJECT
public:
 qint32 checklocalseconds;
    qint32 checkremoteseconds;
}

#ifndef WIDGET_H
#define WIDGET_H
#include<QtGui>
#include <QWidget>
namespace Ui {
class Widget;
}

class Widget : public QWidget
{
    Q_OBJECT
public:
 qint32 checklocalseconds;
    qint32 checkremoteseconds;
}

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widget.cpp:

#include "widget.h"
#include "ui_widget.h"
#include<QtGui>
Widget::Widget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Widget)
{
}
void Widget::readconfigfile()
{
    dir.cd(configpath);
    QFile file1;
    QString configfile="DI_config.txt";//this file contains 60000,10000
    file1.setFileName(dir.absoluteFilePath(configfile));
    file1.open(QIODevice::ReadOnly);
    QTextStream stream(&file1);
    checkremoteseconds=stream.readLine().toInt();//reading 60000
    checklocalseconds=stream.readLine().toInt();//reading 10000
 
}
void Widget::timekeeper(checkseconds)//this check seconds contain checkremoteseconds or cj=hecklocalseconds based on seconds
{
    t=new QTimer(this);
    connect(t,SIGNAL(timeout()),this,SLOT(display()));
    t->start(y);
 
}

#include "widget.h"
#include "ui_widget.h"
#include<QtGui>
Widget::Widget(QWidget *parent) :
    QWidget(parent),
    ui(new Ui::Widget)
{
}
void Widget::readconfigfile()
{
    dir.cd(configpath);
    QFile file1;
    QString configfile="DI_config.txt";//this file contains 60000,10000
    file1.setFileName(dir.absoluteFilePath(configfile));
    file1.open(QIODevice::ReadOnly);
    QTextStream stream(&file1);
    checkremoteseconds=stream.readLine().toInt();//reading 60000
    checklocalseconds=stream.readLine().toInt();//reading 10000

}
void Widget::timekeeper(checkseconds)//this check seconds contain checkremoteseconds or cj=hecklocalseconds based on seconds
{
    t=new QTimer(this);
    connect(t,SIGNAL(timeout()),this,SLOT(display()));
    t->start(y);

}

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You make it really hard for people to help you... Please post your widget.h and the file (widget.cpp?) where you read from the text file and assign your checkremoteseconds variable.

Also, what is the value of checkremoteseconds after you execute the line:

checkremoteseconds=stream.readLine().toInt();

checkremoteseconds=stream.readLine().toInt();

To copy to clipboard, switch view to plain text mode 

[jefftee]

t->start(y);

Not sure exactly where to start, I seriously doubt the code you posted compiles. I fail to see how/where you are using either of the variables checkremoteseconds or checklocalseconds in the code you posted.

Where on earth did the variable "y" come from and what is its value?

When you post code, please use the [code][/code] tags and copy/paste code so that you avoid typos like the ones you have in the sample code you posted please.

[iswaryasenthilkumar]

sorry jthomps
t->start(checkseconds)

Not sure exactly where to start, I seriously doubt the code you posted compiles. I fail to see how/where you are using either of the variables checkremoteseconds or checklocalseconds in the code you posted.

Where on earth did the variable "y" come from and what is its value?

When you post code, please use the [code][/code] tags and copy/paste code so that you avoid typos like the ones you have in the sample code you posted please.

[jefftee]

What is the data type of checkseconds and show the code that calls method Widget::timekeeper. Rather than going back and forth with snippets of incorrect code that doesn't even show how a method is called, why don't you just post your code in its entirety?

And you continue to ignore the question regarding that values do checkremoteseconds and checklocalseconds contain after you've read the values from the text file? Set a breakpoint in the debugger and run your code and inspect the variables at run time or write out their values using qDebug() please.

[wysota]

Please take your actual source files, compress them into tar.gz and post your project as an attachment to your post.

[Lesiok]

iswaryasenthilkumar, do not be angry but I think it's time to go back to school and learn the basics of C++.

[iswaryasenthilkumar]

i wont get any angry..lesiok u are saying for my good one i will improve it soon
Thank you

iswaryasenthilkumar, do not be angry but I think it's time to go back to school and learn the basics of C++.