[Interest] Wrong mouse move events.

[Igor Mironchik]

Hi guys,

In the following code:

//! Pressed?
bool pressed;
//! Position.
QPoint pos;
//! Mouse move delta.
int delta;

void
Envelope::mousePressEvent( QMouseEvent * e )
{
	if( e->button() == Qt::LeftButton )
	{
		d->pressed = true;
		d->pos = e->pos();
		d->delta = 0;
	}

	e->accept();
}

void
Envelope::mouseMoveEvent( QMouseEvent * e )
{
	if( d->pressed )
	{
		const QPoint delta = d->pos - e->pos();

		d->delta += delta.manhattanLength();

		d->pos = e->pos();

		e->accept();

		emit moved( delta.x() );
	}
	else
		e->ignore();
}

emit moved( delta.x() ) emits the next deltas with one direction mouse  
move:

12
-10
11
-9

etc.

I can't understand what I am doing wrong. Is this my mistake, or my mouse  
is broken, or something else?

Thank you.

-- 
Best Regards,
Igor Mironchik.