How to transform the phisical cooridinate of QMouseEvent to logical coordinate?

[superwave]

I defined a QGLWidget:

NLDCanvas = new QGLWidget;
	NLDCanvas->setMinimumHeight(305);
	NLDCanvas->setMinimumWidth(460);

NLDCanvas = new QGLWidget;
	NLDCanvas->setMinimumHeight(305);
	NLDCanvas->setMinimumWidth(460);

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I also defined

QPainter ipainter(this);
	ipainter.setWindow(QRect(50,50,100,100);

QPainter ipainter(this);
	ipainter.setWindow(QRect(50,50,100,100);

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Moreover，In the QGLWidget, I reimplemented the mouseMoveEvent(QMouseEvent *e) function.
And I need to pick the items under the position of the cursor.

However, since the e->posF() is according to the physical coordinate, the result does not has the same value of the item's logical coordinate.

How can I get the logical coordinate of the mouse position of the QGLWidget?

Thanks a lot

[Dong Back Kim]

I defined a QGLWidget:

NLDCanvas = new QGLWidget;
	NLDCanvas->setMinimumHeight(305);
	NLDCanvas->setMinimumWidth(460);

NLDCanvas = new QGLWidget;
	NLDCanvas->setMinimumHeight(305);
	NLDCanvas->setMinimumWidth(460);

To copy to clipboard, switch view to plain text mode 

I also defined

QPainter ipainter(this);
	ipainter.setWindow(QRect(50,50,100,100);

QPainter ipainter(this);
	ipainter.setWindow(QRect(50,50,100,100);

To copy to clipboard, switch view to plain text mode 

Moreover，In the QGLWidget, I reimplemented the mouseMoveEvent(QMouseEvent *e) function.
And I need to pick the items under the position of the cursor.

However, since the e->posF() is according to the physical coordinate, the result does not has the same value of the item's logical coordinate.

How can I get the logical coordinate of the mouse position of the QGLWidget?

Thanks a lot

Are you talking about coordinate conversion between OpenGL space coordinate and Qt screen coordinate?

Regards,
Dong Back Kim