item local coordinate

[wysota]

Change the boundingRect() implementation. It is the one deciding about coordinates.

[dreamer]

can i have an example?????

[wysota]

Sorry, an example of what? Returning of a QRect object?

[dreamer]

if the code is :

QRectF myItem::boundingRect() const{
	return rect();
}

QRectF myItem::boundingRect() const{
	return rect();
}

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....so i don't resolve the problem.

The item coordinate (0,0) doesn't match with the centre of the item.

[wysota]

The rect you return has to correspond to the coordinates. If you increase the size of the rectangle and want the (0,0) point to remain in the middle of the rectangle, the upper left corner has to change its coordinates. Otherwise you're just extending the rectangle one way.