ignore, solved by self

[CookieMaster]

Solved by self.

[Pinguinsan]

void MainWindow::on_close_clicked()
{
	ui->graphicsView->clear();
	ui->graphicsView->viewPort().update(); 
}

The viewPort update may or may not be necessary, see here

[CookieMaster]

11 hours ago, Pinguinsan said:

void MainWindow::on_close_clicked()
{
	ui->graphicsView->clear();
	ui->graphicsView->viewPort().update(); 
}

The viewPort update may or may not be necessary, see here

 error: 'class QGraphicsView' has no member named 'clear'
     ui->graphicsView->clear();
                       ^

 

: error: 'class QGraphicsView' has no member named 'viewPort'
     ui->graphicsView->viewPort().update();
                       ^

 

I found out that I can use 

scene->clear();
ui->graphicsView->items().clear();

but is what you had above better? 

 

Not sure what the difference between the 2 is to be honest. 

[Pinguinsan]

3 hours ago, CookieMaster said:

 error: 'class QGraphicsView' has no member named 'clear'
     ui->graphicsView->clear();
                       ^

 

: error: 'class QGraphicsView' has no member named 'viewPort'
     ui->graphicsView->viewPort().update();
                       ^

 

I found out that I can use 

scene->clear();
ui->graphicsView->items().clear();

but is what you had above better? 

 

Not sure what the difference between the 2 is to be honest. 

Ah, sorry about that, I was looking at the documentation for QGraphicsScene, not QGraphicsView. Yeah, it looks like your method works will work (does it?).

[CookieMaster]

22 hours ago, Pinguinsan said:

Ah, sorry about that, I was looking at the documentation for QGraphicsScene, not QGraphicsView. Yeah, it looks like your method works will work (does it?).

Yes it works fine!!