Show integer value in qtable widget

[QTlearner90]

HI..,
I am new to QT. i have to display an int value in qtable widget.I tried following code. but it doesnot showing the value in table widget.

rgnt.R_id=1;
ui->tableWidget_3->setItem(0,1,new QTableWidgetItem((rgnt.R_id)));

here rgnt is a structure object.
can anyone tell how can i show this value in tablewidget??

Edit raven-worx: moved topic

[Taz742]

@QTlearner90

ui->tableWidget_3->setItem(0, 1, new QTableWidgetItem(QString::number(rgnt.R_id) ) );

https://www.google.ge/search?q=number+to+qstring&oq=number+to+qstring&aqs=chrome.0.0j69i60l3j0l2.4535j0j7&sourceid=chrome&ie=UTF-8

[Venkatesh V]

@QTlearner90

Hi,
QTableWidgetItem wont take integer as a input so try as @Taz742 has posted.

[VRonin]

Guys, there are other methods in a class beyond the constructor!

auto widItem = new QTableWidgetItem;
widItem->setData(Qt::EditRole,rgnt.R_id);
ui->tableWidget_3->setItem(0,1,widItem);

[Taz742]

@VRonin
The difference is big?
Can you give specific answers?

[VRonin]

Huge!

Just for a laugh, try filling a column with the numbers from 1 to 100 using your method and then sort the column.

on top of that, QString::number and QString::toInt should never be used for things that are shown on the ui. Always use QLocale::toString and QLocale::toInt with the locale of the widget you are presenting the value to

[artwaw]

@VRonin said in Show integer value in qtable widget:

QString::number and QString::toInt should never be used for things that are shown on the ui.

I apologize for hijacking the thread but what if you have just plain integers and you are sure that values are locale independent?

[VRonin]

While we think arab numbers are universal, they are not. Chinese locales, for example, have special unicode chars for numbers (0 = 零, 1 = 一) . Even arabic has different chars for arab numbers

[artwaw]

@VRonin Thank you!

[QTlearner90]

@Taz742 thank you.. it works..

[Taz742]

@QTlearner90
Yes it works. But review the comments and then make a decision.
I think it's better if you use another method what @VRonin said.

auto widItem = new QTableWidgetItem;
widItem->setData(Qt::EditRole,rgnt.R_id);
ui->tableWidget_3->setItem(0,1,widItem);

[Taz742]

@VRonin
Why does not it take Qt::Checked or Qt::Unchecked?

[VRonin]

@Taz742 said in Show integer value in qtable widget:

@VRonin
Why does not it take Qt::Checked or Qt::Unchecked?

You need to adjust the flag too for that role to matter widItem->setFlags(widItem->flags() | Qt::ItemIsUserCheckable);

[Taz742]

@VRonin Can not I give it my function?

QTableWidgetItem *dlgGroups::GetNewItem(const QVariant value){
    auto c_item = new QTableWidgetItem;
         c_item->setData(Qt::UserRole, value);
    return (QTableWidgetItem*) c_item;
}

Contact *cont = globalall->GetConact(CUID);

m_table->insertRow(0);
m_table->setItem(0, 0, GetNewItem(InsertQry.lastInsertId().toString()));
m_table->setItem(0, 1, GetNewItem(cont->UID));
m_table->setItem(0, 2, GetNewItem(Qt::Unchecked)); // ?
m_table->setItem(0, 3, GetNewItem(cont->Name + " " + cont->FamilyName));
m_table->setItem(0, 4, GetNewItem(cont->Mobile));
m_table->setItem(0, 5, GetNewItem(cont->Type ? cont->Identification : cont->PersonID));

[VRonin]

@Taz742

1. you still did not set the flag
2. you are saving everything in Qt::UserRole which is never used by Qt's standard views

QTableWidgetItem *dlgGroups::GetNewItem(const QVariant& value, int role = Qt::EditRole){
    auto c_item = new QTableWidgetItem;
    c_item->setData(role , value);
    if(role==Qt::CheckStateRole)
        c_item->setFlags(c_item->flags() | Qt::ItemIsUserCheckable);
    return c_item;
}

then you can use m_table->setItem(0, 2, GetNewItem(Qt::Unchecked,Qt::CheckStateRole));

[Taz742]

@VRonin
Many Thank!!!