标题:[求助]请问我用qwt来画图，怎样能够实现横坐标显示当前时间
作者:wk123
日期:2015-04-13 17:07
内容:
请问我用qwt来画图，怎样能够实现横坐标显示当前时间如图所示
#1 [wk123 04-13 17:25]
#2 [parker 05-15 16:44]
重新实现QwtScaleDraw的label
class TimeScaleDraw: public QwtScaleDraw
{
public:
TimeScaleDraw( const QTime &base ):
baseTime( base )
{
}
virtual QwtText label( double v ) const
{
QTime upTime = baseTime.addSecs( static_cast( v ) );
return upTime.toString();
}
private:
QTime baseTime;
};
#3 [liudianwu 05-19 15:10]
#4 回 parker 的帖子 [misgn 08-10 10:44]
parker:重新实现QwtScaleDraw的label
class TimeScaleDraw: public QwtScaleDraw
{
public:
TimeScaleDraw( const QTime &base ):
....... (2015-05-15 16:44)
非常感谢，抱着试一试的心态，完成了