Qwt 6.1 legend duplication

alex2323

my code:
@
void MainWindow::drawGraphCpuGeneralSlot(int cpu)
{
int graphTimeInt = ui->spinBox->value();
double graphTimeDouble = (double) graphTimeInt;

QwtLegend *legend = new QwtLegend();

ui->graphCPU->setTitle(QString::fromUtf8("cpu"));
ui->graphCPU->insertLegend(legend);
ui->graphCPU->setFooter("seconds");
ui->graphCPU->setAxisScale(QwtPlot::xBottom,0.0,graphTimeDouble);
ui->graphCPU->setAxisTitle(QwtPlot::yLeft,QString::fromUtf8("%"));
ui->graphCPU->setAxisScale(QwtPlot::yLeft,0.0,100.0);

cpuLine = new QwtPlotCurve(QString(""));
cpuLine->setPen(QPen(Qt::darkGreen, mainLineInGraph));
cpuLine->setTitle("usage - " + QString::number(cpu));

this->cpuArray[0] = cpu;

cpuLine->setRawSamples(this->cpuArrayTime,this->cpuArray,myIterator);
cpuLine->attach(ui->graphCPU);

for(int i=myIterator;i!=0;i--) {
this->cpuArray[i] = this->cpuArray[i-1];
}

}
@

it is slot funtion. Slot is working, but legend is duplicating:
http://farm8.staticflickr.com/7380/11495605866_817e00069c.jpg

what's my be wrong? Thank you.

uwer

Guess the legend is o.k. but you are creating/attaching another curve with the same title by accident with each data update.

alex2323

[quote author="uwer" date="1387730153"]Guess the legend is o.k. but you are creating/attaching another curve with the same title by accident with each data update.[/quote]

Yes, I divided this function to two functions: one for initializing and one for updating. Now it works file. Thank you :)

koahnig

@alex2323
welcome to devnet

I have added "code wrappings (please see forum help)":http://qt-project.org/wiki/ForumHelp#e3f82045ad0f480d3fb9e0ac2d58fb01 to your original post. Please use them next time you have a code section in your post.