invalid use of member (did you forget the '&')

[KBMoiloa]

Hello all and thank you for viewing my question:

I have a button (pushButton) in my form MainWindow which I have set up to execute a method by using Go to Slot... in qt designer:

This is the method's body:

void MainWindow::on_pushButton_clicked()
{
    QGraphicsScene* scene=new QGraphicsScene;
    QColor black ("black");
    QPen pen (black);
    scene->addLine(0,0,250,250,pen);
 
    this->ui->graphicsView->scene=scene;
 
}

void MainWindow::on_pushButton_clicked()
{
    QGraphicsScene* scene=new QGraphicsScene;
    QColor black ("black");
    QPen pen (black);
    scene->addLine(0,0,250,250,pen);

    this->ui->graphicsView->scene=scene;

}

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I get a compile time error message in the line, this->ui->graphicsView->scene=scene:
error: invalid use of member (did you forget the '&' ?).

The problem is I am a complete beginner to unmanaged software development so this might a beginners problem with pointers but I tried to search Google and C++ tutorials and other Qt forums but alas no luck.

Please post beginners tips about pointer related conventions you use to prevent pointer problems anyway because I was pulling my hair with pointer problems .
Thank you for helping!!!!!!!!!!!!!!!!!

[tbscope]

You need to use the setScene() function.

scene might be an internal variable for the QGraphicsView class, not meant to be used by anyone.
Edit: as seen it the QGraphicsView private header:

QPointer<QGraphicsScene> scene;

QPointer<QGraphicsScene> scene;

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[DanH]

I suspect that the object graphicsView (and not its pointer) is a member of ui, so you should use ui.graphicsView. But it's hard to say without seeing the rest of the code.

Note that there are several versions of the UI Designer, and they differ in terms of what elements are "inlined" vs pointed to. So you can't always blindly copy examples.

[KBMoiloa]

SOLVED, yes scene is actually not meant to be used by anyone. Thanks tbscope !!!!!!!!!!!!!!!!