SectionTitleWidget::mousePressEvent call 'grabMouse' to ensure the floaing widget can always follow the mouse after floated. SectionTitleWidget::mouseMoveEvent check Qt::LeftButton.
SectionTitleWidget::mousePressEvent call 'grabMouse' to ensure the floaing widget can always follow the mouse after floated. SectionTitleWidget::mouseMoveEvent check Qt::LeftButton.