[SOLVED =)]ComboBox Qstring but need an int or GLenumb

mariusmssj

Hey everyone once again I got a question to ask,

I got a combobox with 10 values:
"Picture of the combobox values here":http://i.imgur.com/lYo9A.jpg

As you can see it's a list of OpenGL primitives that are GLenumb.

I got this function:
@void MainWindow::on_cmbx_primatives_currentIndexChanged(const QString &arg1)
{
GLFrame->RenderThread.setPrimitiveType(arg1);
primL = arg1;
}@

This sets the PrimitiveType value in the rendering class but clearly it's just a string and not an integer. Is it possible to set an additional value to a comboxbox argument for example the Text would be as an additional value that I could pass???
"Since you can set comments and other additional values":http://i.imgur.com/jYYrB.jpg

@GL_POINTS : but contain 0x0000@

thank you

AcerExtensa

You can populate your combobox with "this":http://qt-project.org/doc/qt-4.8/qcombobox.html#addItem function:
@void void QComboBox::addItem ( const QString & text, const QVariant & userData = QVariant() )@

userData can be all you want...

mariusmssj

Thank you, it seems i am doing something wrong
@ui->cmbx_primatives->addItem(const QString("Test"), const QVariant & userdata = QVariant(const int(0x0000)));@

AcerExtensa

Try this:
@ui->cmbx_primatives->addItem("Test", QVariant::fromValue<int>(0x0000));@

mariusmssj

yep AcerExtensa that worked like a charm =]
but how do I access the integer value from arg1 so I could pass it to the render class?

AcerExtensa

use
@void currentIndexChanged ( int index )@
signal instead one with QString.

your slot will be when like this:
@void MainWindow::on_cmbx_primatives_currentIndexChanged(int index)
{
primL = ui->cmbx_primatives->itemData(index).toInt();
GLFrame->RenderThread.setPrimitiveType(primL);
}@

mariusmssj

AcerExtensa your magic worker, is it possible to access the name of the index instead of the number.
I tried @QString arg1 = ui->cmbx_primatives->itemText(index).toStdWString();@ but that's wrong

AcerExtensa

@QString arg1 = ui->cmbx_primatives->itemText(index);@

should be enough... or:

@QString arg1 = ui->cmbx_primatives->currentText();@
it will return text of currently selected item

mariusmssj

Yep that worked right away.

Well I removed all the values from the comboxbox in the Qt creator interface and the program crashed.
"The program has unexpectedly finished."

So then I just randomly added an item to the combo box and it worked again. Why's that?

AcerExtensa

Maybe you're trying to access items or userData before there is any items in combobox? Sounds pretty like that....

mariusmssj

Once again AcerExtensa thank very much =] all my problems are now solved!!!

AcerExtensa

You are welcome! Please add "[SOLVED]" to the topic subject.