clearing a picture box area

is there any API / method to clear a particular area of a picture box .. I have the start and end co-ordinate and i want to clear that particular area of a picture . i think some API like sendmessage can do it by taking pictrue box handle.Write now i m using another pic box and placing it above that area to clear that area but it is causing some problem for other operation ..
is there any way to do it by coding ??

thanks in advance ..

i just can tell you that Use BitBlt API function.
It just for what you have stated in your problem.

Hi
It isnt really necessary to bother with API. Just use the Line command

VB Code:

Private Sub Command1_Click()
    'x1,y1 to x2, y2, req'd colour, B for box and F for fill
    Picture1.Line (0, 0)-(500, 500), Picture1.BackColor, BF
End Sub

Regards
Stuart

ya that showing rectangle over selected part will work with fill color and forecolor same say white..