[Interest] draw text and shape on an image using QGraphicsView

Mehmet ─░pek mhmtipek at gmail.com
Mon Jul 16 12:19:38 CEST 2012


I suggest you to create a QGraphicsTextItem in mousePressEvent function.
Don't use QPainter to draw graphics if you are using QGraphicsView. Btw,
your code shouldn't be compiled. QPainter constructor takes QPaintDevice*
and you are giving QGraphicsScene* which is derived from QObject.

On Sun, Jul 15, 2012 at 5:14 PM, Arun Kumar <arunkumaraymuo at gmail.com>wrote:

>
> Hello,
> I am trying to create a simple image editing tool using Qt GraphocsView
> I can load any image file to QGraphicsView
>
>
> now I am trying to add some text in loaded image. For that I subclass
>  QGraphicsView  and override
>
>
> mousePressEvent(QMouseEvent* event)
>
>
> I tried this code to draw a string on the clicked position of image but it not displaying any string in image
>
>
> void GraphicsViewExt::mousePressEvent(QMouseEvent* event) {
>     //For panning the view
>     LastPanPoint = event->pos();
>
>     QPainter painter(this->scene());
>     painter.setRenderHint(QPainter::Antialiasing);
>    // this->scene()->render(&painter);
>     painter.drawText(LastPanPoint.x(),LastPanPoint.y(),"Test String");
>
> //this->invalidateScene();
>
> }
>
>
>
> How I can draw a string on an image when the user click on the image. I searched net but didnt get any solution to this simple problem?
>
>
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>
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