2D array into graphicview to create Objects from 2D-Array

[projectbavaria]

QPixmap outPixmap = QPixmap(xarrSize,yarrSize);
  outPixmap.loadFromData(grid);

  // Bild-Datei anzeigen

  ui->label->setPixmap(outPixmap);
  ui->label->show();

but doesn't know the loadFromData..
i will try more

[JonB]

@projectbavaria said in 2D array into graphicview to create Objects from 2D-Array:

outPixmap.loadFromData(grid);
but doesn't know the loadFromData..

What type is grid? If it's your char grid[xarrSize][yarrSize] then your call does not correspond to either overload https://doc.qt.io/qt-5/qpixmap.html#loadFromData or https://doc.qt.io/qt-5/qpixmap.html#loadFromData-1.

[projectbavaria]

@JonB it is a 2D Array -> array Char [x][y]
yeah i will look on your link

[projectbavaria]

can't go on i will look From Matrix to QImage and QPixmap on forum.. maybe that will help

[SGaist]

Hi,

Do you mean you have a two dimensional array of chars that you want to build a grid with and that each of the cell of that grid shall contain the letter at that point of the array ?

[projectbavaria]

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[projectbavaria]

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[projectbavaria]

@projectbavaria 

[projectbavaria]


now i getting a black screen and try to go on

[SGaist]

From what you posted, there's nothing added to the scene and your view seems to be a local variable so unless it's in your main function body, it will be destroyed before you can even see it.

[projectbavaria]

@SGaist but before i destroying it i have to handle that i want to save my array(inside there are my chars) as a QtPiximap -> after that i can show it in GraphisScene ?

[SGaist]

Except that you are not using your array to draw anything. You are using a QBitArray which contains nothing to draw on a image that you then use as brush.

You should start by just drawing on that QImage properly and set it on a QLabel to see what it would look like. And once you have that working, come back to your QGraphicsView part.

[projectbavaria]

@SGaist okey i will try