Qt C++: Solution for “error: variable 'QPointer label' has initializer but incomplete type”

Qt C++: Solution for “error: variable 'QPointer<QLabel> label' has initializer but incomplete type”

C++ Code with Error message:

void MainWindow::on_pushButton_clicked()

{

  QPointer<QLabel> label = ui->label1;

  label->setText("Label 1 text changed");

}

Solution:

You need to include the “#include <QPointer>“ at the top section in this implementation file.