QGLContext::makeCurrent(): Cannot make invalid context current.
QImage::convertDepth: Image is a null image
QImage::convertDepth: Image is a null image
QImage::convertDepth: Image is a null image
QPixmap: Invalid pixmap parameters
QPainter::begin: Cannot paint null pixmap
QPainter::setFont: Will be reset by begin()
QPainter::setPen: Will be reset by begin()
QPainter::end: Missing begin() or begin() failed
QImage::convertDepth: Image is a null image
QImage::scale: Image is a null image
QImage::convertDepth: Image is a null image
QImage::convertDepth: Image is a null image
QImage::convertDepth: Image is a null image
QPixmap: Invalid pixmap parameters
QPainter::begin: Cannot paint null pixmap
QPainter::setFont: Will be reset by begin()
QPainter::setPen: Will be reset by begin()
QPainter::end: Missing begin() or begin() failed
QImage::convertDepth: Image is a null image
QImage::scale: Image is a null image
QImage::convertDepth: Image is a null image
QImage::convertDepth: Image is a null image
QPixmap: Invalid pixmap parameters
QPainter::begin: Cannot paint null pixmap
QPainter::setFont: Will be reset by begin()
QPainter::setPen: Will be reset by begin()
QPainter::end: Missing begin() or begin() failed
QImage::convertDepth: Image is a null image
QImage::scale: Image is a null image
QImage::convertDepth: Image is a null image
QImage::convertDepth: Image is a null image