//写字
if ( m_listText.isEmpty() ) return;
for ( short i = 0; i < m_listText.size(); ++i )
{
QFont font;
font.setPointSize( 20 );
font.setFamily( QStringLiteral( "微软雅黑" ) );
painter.setFont( font );
QPen pen;
pen.setColor( QColor( 255, 0, 0 ) );
painter.setPen( pen );
painter.drawText( m_listText.m_pos, m_listText.m_str );
}