帮帮忙，谢谢大侠，VB

llm3-1415926

<>rivate Sub cmdPlot_Click()
XY
On Error Resume Next
8 n4 t  p1 k- E. [0 k Dim x As Double, Y As Double
Randomize
3 P0 w- s/ w5 a! K5 M5 U  
# C6 v9 a+ L: e  J" P, I; {; d( R        SC.Reset
$ e2 p$ {/ [" w& o' ], V! c+ J        SC.AddCode "Function RunThis(X)" &amp; vbCrLf &amp; "RunThis=" &amp; txtEquation &amp; vbCrLf &amp; "End Function"
" {: b( M' p1 W. q4 I       For x = -15 To 15 Step 0.001
         Y = SC.Run("runthis", x)
         DoEvents
          Picture1.PSet (x, Y), RGB(250, 0, 0)
+ j) v6 j6 r5 g+ u# p% Q& W. u& n          Next x
7 E3 O9 [. r7 R$ kEnd Sub</P>
<>为仕么Y=LOG（X），SQR（X）也有图象（X轴负半轴），请帮忙</P>

USER001

把完整代码发上来

llm3-1415926

<><b>帮帮忙，跪下谢谢斑竹，VB</b></P><>rivate Function PrintWord(x, Y, Word As String)
# k0 ^$ y/ i$ K7 G7 G2 [5 RWith Picture1
.CurrentX = x
# z( L4 v! c) Z2 h4 C; ~3 S.CurrentY = Y
) S, M6 m* h3 t5 \, K0 c! q( I.ForeColor = RGB(0, 0, 255)
End With
Picture1.Print Word
' K1 s# r" w: b- c  AEnd Function
/ d* d4 i8 T6 @5 f8 r'定义画点函数
6 s* E1 h8 V& _& ^5 n4 XPrivate Function DrawDot(Px, Py, Color)
; H& O, G0 v$ I' u. SPicture1.PSet (Px, Py), Color
End Function
Sub XY() '建立直角坐标系
* _. A. n% {" g/ s* S4 m3 I2 xPicture1.DrawWidth = 1 '设置线条宽度
Picture1.Cls
& N) _8 G2 d& n" H8 S7 w  r6 p'设定用户坐标系，坐标原点在Picture1中心
. w, Z. f1 B& t: f& U' I3 YPicture1.Scale (-10, 10)-(10, -10)
Picture1.Line (-10, 0)-(10, 0), RGB(0, 0, 255)
Picture1.Line -(9.5, 0.5), RGB(0, 0, 255)
Picture1.Line (10, 0)-(9.5, -0.5), RGB(0, 0, 255)
Picture1.ForeColor = RGB(0, 0, 255)
Picture1.Print "X"
( l: X3 t" y9 o/ S'画 X 轴
Picture1.Line (0, -10)-(0, 10), RGB(0, 0, 255)
& t+ R, d, b% l/ i2 K) nPicture1.Line -(0.5, 9.5), RGB(0, 0, 255)
Picture1.Line (0, 10)-(-0.5, 9.5), RGB(0, 0, 255)
% I3 u( Q- e1 {Picture1.Print "Y"
'画 Y 轴
  G4 J4 ~5 _% C& Y) V) XFor lin = -9 To 9
Picture1.Line (lin, 0)-(lin, 0.25)
wor = PrintWord(lin - 0.5, -0.5, Str(lin))
5 g" E2 Q. y0 {1 dPicture1.Line (0, lin)-(-0.25, lin)
If lin &lt;&gt; 0 Then
wor = PrintWord(-0.9, lin, Str(lin))
End If
3 \; |  [2 A# m3 `# B- @Next lin
+ H2 k( V5 K% N" \8 JPicture1.DrawWidth = 1
# s$ g# l) g% |- B4 D, ~9 x* IEnd Sub
Private Sub cmdPlot_Click()
4 l6 M5 c; Z& E5 F) y+ TXY
5 o% G$ P2 i8 [4 C8 J& vOn Error Resume Next
# Q! x7 A/ r9 y0 T) ] Dim x As Double, Y As Double
Randomize
; W; F2 c- p3 G) Q3 [7 j  
9 P9 X$ o2 N  a7 V  a$ P5 O: \        SC.Reset
        SC.AddCode "Function RunThis(X)" &amp; vbCrLf &amp; "RunThis=" &amp; txtEquation &amp; vbCrLf &amp; "End Function"
       For x = -15 To 15 Step 0.001
         Y = SC.Run("runthis", x)
2 R4 e- v1 ?: _: E9 e( a& A; S         DoEvents
5 P8 \" E3 m# z3 A4 f; h  q0 C          Picture1.PSet (x, Y), RGB(250, 0, 0)
4 ~" Y  B/ z. u- t4 O$ Z          Next x
End Sub</P><>rivate Sub Command2_Click()
XY
End Sub</P><>rivate Sub Command3_Click()
- O( e( k1 g8 J1 [7 X6 h. FEnd
End Sub</P><>
Private Sub Form_Load()
: K! ~" i. O. h; SMe.Caption = "美丽曲线——山东省商河一中路来民"
$ [" g/ J, T; Z% @0 Q3 QMe.Show
, d; n9 h" N" g& A3 R5 Q4 KMe.AutoRedraw = True
' l! c) H5 C8 d3 ^$ K$ d* o3 p+ `XY
+ I! l$ v1 Q) Q8 j- q5 G, Q' C; |End Sub
控件</P><>为仕么Y=LOG（X），SQR（X）也有图象（X轴负半轴）， SC为MS.SCRIPT.control请帮忙,谢谢斑竹,跪谢！！！</P>

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