CODEWITHSUNDEEP
c++qtqcomboboxqtextedit
Kitty Burner
Kitty Burner

Reputation: 47

Qt - How to change a QTextEdit's font size with a QComboBox

im trying to change the font size of a QTextEdit by using a QComboBox which is filled in with different values, so for example when I choose a value in the QComboBox it will change the QTextEdits size to the value I have selected. I have values in the QComboBox but I don't know how to change the QTextEdit's value to the value I have selected.

Below is the code I used to fill the QComboBox with values:

for (int i = 0; i < 102; i+=2){
  QStringList list = (QStringList()<<QString::number(i));
  ui->combobox->addItem(list);

Any help on what to do from here would be appreciated thank you!

Upvotes: 0

Views: 1546

Answers (1)

ramtheconqueror
ramtheconqueror

Reputation: 1974

QTextEdit* textEdit = new QTextEdit(......);

QComboBox* fontSizeCombo = new QComboBox(....);
for (int i = 1; i < 102; i += 2) {
  fontSizeCombo->addItem(QString::number(i));
}
connect(fontSizeCombo, SIGNAL(currentIndexChanged(QString), SLOT(changeFontSize(QString));

void MyClass::changeFontSize(const QString& selected)
{
  textEdit->setFontPointSize(selected.toInt());
}

Don't need appending QStringList with each item.

Don't set font size to 0. Excerpt from the Qt docs:

Note that if s is zero or negative, the behavior of this function is not defined.

Upvotes: 1

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