QGraphicsLineItem

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dante_armando

Beginner

Posts: 2

Wednesday, May 7th 2008, 6:17pm

QGraphicsLineItem

Hi everyone,

I'm new to this forum. I'm using Qt 4 in Windows and I'm having trouble building a basic GUI that uses the QGraphicsScene class.

I declared a pointer as

QGraphicsLineItem *verLine;

and tried to implement it with

verLine = new QGraphicsLineItem(this);

But when I compile the application I get the following error:

gdisplay.cpp: In constructor `GDisplay::GDisplay(QWidget*)':
gdisplay.cpp:19: error: invalid use of undefined type `struct QGraphicsLineItem'
../../../../Qt/4.3.4/include/QtGui/../../src/gui/graphicsview/qgraphicsscene.h:68: error: forward declaration of `struct QGraphicsLineItem'

Can someone tell what I'm doing wrong from this?

Thank you,

Dante