帮帮忙，谢谢大侠，VB

llm3-1415926

<>rivate Sub cmdPlot_Click()
+ S( a. `, p. n$ EXY
On Error Resume Next
1 `) `! @3 w9 \8 [* m! O& G  p+ ` Dim x As Double, Y As Double
Randomize
  
5 J1 R  t0 z% L6 e: D        SC.Reset
, \* A: P, A3 r0 R, R$ c6 ]* w0 t$ G        SC.AddCode "Function RunThis(X)" &amp; vbCrLf &amp; "RunThis=" &amp; txtEquation &amp; vbCrLf &amp; "End Function"
; }' z9 T8 Q! d# P0 ?* ^0 i9 _       For x = -15 To 15 Step 0.001
         Y = SC.Run("runthis", x)
! E" F/ l6 f# M/ T5 j3 ^         DoEvents
          Picture1.PSet (x, Y), RGB(250, 0, 0)
          Next x
End Sub</P>
% f) [6 w) x4 q! g7 Y& ^<>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)
  `: }0 W: s0 R' e: iWith Picture1
.CurrentX = x
.CurrentY = Y
.ForeColor = RGB(0, 0, 255)
End With
& A3 q0 T  |$ e# ?3 h( e* h; wPicture1.Print Word
End Function
'定义画点函数
Private Function DrawDot(Px, Py, Color)
Picture1.PSet (Px, Py), Color
End Function
; r% {  R/ i! I' {7 OSub XY() '建立直角坐标系
6 P; y: s9 G! e/ r+ |! m3 ]Picture1.DrawWidth = 1 '设置线条宽度
' p& w0 Y( t( ]2 `0 J3 ^( RPicture1.Cls
'设定用户坐标系，坐标原点在Picture1中心
Picture1.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)
) y+ E8 T7 ~/ b$ ^8 n1 n5 QPicture1.Line (10, 0)-(9.5, -0.5), RGB(0, 0, 255)
Picture1.ForeColor = RGB(0, 0, 255)
Picture1.Print "X"
% A. R5 W3 p& {( ?'画 X 轴
% ?/ s5 F! V- b; ~Picture1.Line (0, -10)-(0, 10), RGB(0, 0, 255)
Picture1.Line -(0.5, 9.5), RGB(0, 0, 255)
Picture1.Line (0, 10)-(-0.5, 9.5), RGB(0, 0, 255)
9 f: L; y' j& dPicture1.Print "Y"
/ e- a- @# T7 V7 n- I7 z'画 Y 轴
For lin = -9 To 9
/ J; @# T! Q0 }- P4 G# r' P- aPicture1.Line (lin, 0)-(lin, 0.25)
" w6 ^1 q9 ~$ G8 F, ]! Ywor = PrintWord(lin - 0.5, -0.5, Str(lin))
Picture1.Line (0, lin)-(-0.25, lin)
- j* C5 p. v7 ~If lin &lt;&gt; 0 Then
wor = PrintWord(-0.9, lin, Str(lin))
End If
+ @, O0 }- _$ i1 J# s+ W/ m- LNext lin
4 V  P7 }$ ^, }& d( E2 APicture1.DrawWidth = 1
End Sub
Private Sub cmdPlot_Click()
# {, \; y5 U/ X9 sXY
On Error Resume Next
* P. L+ X8 L$ X Dim x As Double, Y As Double
Randomize
  
$ y$ f; x! t! |4 v& s9 U4 p0 J        SC.Reset
        SC.AddCode "Function RunThis(X)" &amp; vbCrLf &amp; "RunThis=" &amp; txtEquation &amp; vbCrLf &amp; "End Function"
0 e3 A) q$ a) {9 \       For x = -15 To 15 Step 0.001
( a8 r$ Z3 v' h& Y( T8 x         Y = SC.Run("runthis", x)
/ C+ K2 \& |; {! V         DoEvents
; U2 J- v6 o; ]- c/ G* }0 c          Picture1.PSet (x, Y), RGB(250, 0, 0)
* ^# |$ k' V/ f' T: n, p% A' H          Next x
End Sub</P><>rivate Sub Command2_Click()
XY
End Sub</P><>rivate Sub Command3_Click()
0 I8 O+ H# E" I3 fEnd
End Sub</P><>
1 b, }; s4 l/ d' ^Private Sub Form_Load()
Me.Caption = "美丽曲线——山东省商河一中路来民"
1 R* \! q( e9 T6 I. KMe.Show
Me.AutoRedraw = True
7 p) h4 s0 S9 d) p" Z. W  TXY
! k( ?! [4 u' f- @" m* XEnd Sub
3 [0 T# z" }5 d, u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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