I have a QMessageBox
which I'd like it to be bigger. It's a simple QMessageBox
with two standard buttons, Ok and Cancel. The problem is that it is very small for my application's purposes. Code shows like this:
QMessageBox msg;
msg.setText("Whatever");
msg.setStandardButtons(QMessageBox::Ok | QMessageBox::Cancel);
msg.setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Expanding);
int ret = msg.exec();
switch (ret) {
case QMessageBox::Ok:
ui->textEdit->clear();
break;
case QMessageBox::Cancel:
break;}
I tried several ways to increase the size:
msg.setSizePolicy(QSizePolicy::Expanding,QSizePolicy::Expanding);
msg.setSizePolicy(QSizePolicy::Maximum,QSizePolicy::Maximum);
msg.setFixedHeight(600);
msg.setFixedWidth(600);
I even cleared and rebuilt, and it compiles everything but nothing take effect...
Do you have any idea on how to set QMessageBox size "by hand"? Thanks.
You can edit the css of the label:
msg.setStyleSheet("QLabel{min-width: 700px;}");
You can similarly edit the css of the buttons to add a margin or make them bigger.
For example:
msg.setStyleSheet("QLabel{min-width:500 px; font-size: 24px;} QPushButton{ width:250px; font-size: 18px; }");
There is also a trick mentioned:
QSpacerItem* horizontalSpacer = new QSpacerItem(800, 0, QSizePolicy::Minimum, QSizePolicy::Expanding);
QGridLayout* layout = (QGridLayout*)msg.layout();
layout->addItem(horizontalSpacer, layout->rowCount(), 0, 1, layout->columnCount());
But this doesn't seem to work for everyone.