for the construct function
QGLWidget(QWidget * parent = 0, const QGLWidget * shareWidget = 0, Qt::WindowFlags f = 0)
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when I use it likes this,(the class slicerCanvas and secCan all inherit QGLWidget)
slicerX_ = new slicerCanvas(centerWidget_);//which load data and gen texture object
slicerX_->setPlaneModel('y');
secWid_ = new secCan(centerWidget_,slicerX_);
slicerX_ = new slicerCanvas(centerWidget_);//which load data and gen texture object
slicerX_->setPlaneModel('y');
secWid_ = new secCan(centerWidget_,slicerX_);
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the secWid_ can display correct. But if the code like this
secWid_ = new secCan(centerWidget_);
slicerX_ = new slicerCanvas(centerWidget_,secWid_);//which load data and gen texture object
slicerX_->setPlaneModel('y');
secWid_ = new secCan(centerWidget_);
slicerX_ = new slicerCanvas(centerWidget_,secWid_);//which load data and gen texture object
slicerX_->setPlaneModel('y');
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the secWid_ display correct(I use signal and slot to send and receive texture object,I don't konw whether this correct),I realy don't konw why.
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