plotting graph using qwt

I have successfully plotted the graph in Qt Gui with installation of Qwt library...
but problem is I am not able to show all the 4 quadrants...and I am able to show only single quadrant...please help me how to display all the 4 quadrants

cmon somebody must have solution to this...??

can you explain what you want to achieve? you can set the axes range to any interval you want.