Present parts of string in table (QTableWidget)

[imperator]

Hi

I've got a couple of questions regarding QTableWidget/QTableWidgetItem.

I've got a table I want to populate with data from a string. My program reads strings from a file and I use QTableWidgetItem to pass them onto the table.

This works as intended, but each populated cell contains the whole string. I'd like a cell to hold the information in the string so I can present a message box when the user clicks a cell.

My question is if it's possible to present only the header from the string in the table cell, and keep the rest of the data hidden?

Regards,

André

[Lykurg]

Instead of setting the whole text just set the trimmed one. Set the whole text by using QTableWidgetItem::setData() with Qt::UserRole. Get the text back via QTableWidgetItem::data().


EDIT: And of course:

Salve imperator, vivat princeps optime!

[imperator]

Hi and thank you for the answer. I'm quite new in this game, and have to ask a bit more.

Set the whole text by using QTableWidgetItem::setData() with Qt::UserRole.

Is this the correct way to do the above mentioned?

QString s = "Some text";
 
// Label for trimmed text
QLabel* label = new QLabel(s.section(" ", 0, 0));
 
QVariant v = QVariant(s);
 
QTableWidgetItem* item = new QTableWidgetItem();
item->setData(Qt::TextDontPrint, v.toString());
 
// assume a table is available through the pointer tw
tw->setCellWidget(row, column, label);
tw->setItem(row, column, item);

QString s = "Some text";

// Label for trimmed text
QLabel* label = new QLabel(s.section(" ", 0, 0));

QVariant v = QVariant(s);

QTableWidgetItem* item = new QTableWidgetItem();
item->setData(Qt::TextDontPrint, v.toString());

// assume a table is available through the pointer tw
tw->setCellWidget(row, column, label);
tw->setItem(row, column, item);

To copy to clipboard, switch view to plain text mode 

And then this part:

Get the text back via QTableWidgetItem::data().

.

If I've got a pointer to a TableWidgetItem, twi, how can I make the text visible again?

QString s = twi->data(some role).toString();

QString s = twi->data(some role).toString();

To copy to clipboard, switch view to plain text mode 

Not sure about roles.

Regards,

André

[Lykurg]

QString str = "Some very long text...";
QTableWidgetItem* item = new QTableWidgetItem();
item->setData(Qt::DisplayRole, str.left(4)); // display only the 4 first letters
item->setData(Qt::UserRole, str); // store the whole text, but hidden
// use item normally and add it to the table
 
// at some point you have a pointer to any item
item->data(Qt::DisplayRole); // returns the first 4 letters
item->data(Qt::UserRole); // returns the whole string.

QString str = "Some very long text...";
QTableWidgetItem* item = new QTableWidgetItem();
item->setData(Qt::DisplayRole, str.left(4)); // display only the 4 first letters
item->setData(Qt::UserRole, str); // store the whole text, but hidden
// use item normally and add it to the table

// at some point you have a pointer to any item
item->data(Qt::DisplayRole); // returns the first 4 letters
item->data(Qt::UserRole); // returns the whole string.

To copy to clipboard, switch view to plain text mode