How to make the x-Bottom scale fixed.

[Tavit]

Hello jacek Thankx for the reply, I solved my problem .

void RS232_Receive::retrive() 
{
		{
	 m_curve = new QwtPlotCurve("myPlot");
     myPlot->clear();
	 myPlot->replot();
	 	 //draw();
		}
		draw();	
}
}

void RS232_Receive::retrive() 
{
		{
	 m_curve = new QwtPlotCurve("myPlot");
     myPlot->clear();
	 myPlot->replot();
	 	 //draw();
		}
		draw();	
}
}

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I did this but once i clear the curve i wanted to call the draw function so that the next values is plotted from start after the present graph is cleared from the screen. But i am not getting it, the new curve is not plotted. !! Where am i going wrong .

Thank You jacek