帮帮忙，谢谢大侠，VB

llm3-1415926

<>rivate Sub cmdPlot_Click()
XY
On Error Resume Next
Dim x As Double, Y As Double
Randomize
  
        SC.Reset
8 E+ v. n- ], T6 r        SC.AddCode "Function RunThis(X)" &amp; vbCrLf &amp; "RunThis=" &amp; txtEquation &amp; vbCrLf &amp; "End Function"
       For x = -15 To 15 Step 0.001
$ @7 d+ k1 ]5 r! p+ l- o+ u2 {6 J2 @         Y = SC.Run("runthis", x)
         DoEvents
0 \% r5 d. P9 J" p( L          Picture1.PSet (x, Y), RGB(250, 0, 0)
          Next x
End Sub</P>
<>为仕么Y=LOG（X），SQR（X）也有图象（X轴负半轴），请帮忙</P>

ealx0yJu

我看不错噢 谢谢楼主！

秋天的风儿

呵呵，看大家评论如何
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大家好,能交朋友嘛？ok0633.com

llm3-1415926

<><b>帮帮忙，跪下谢谢斑竹，VB</b></P><>rivate Function PrintWord(x, Y, Word As String)
With Picture1
.CurrentX = x
.CurrentY = Y
8 i# @8 L' `( n% E& Z.ForeColor = RGB(0, 0, 255)
5 Y  J1 ]7 v. P7 s* Q; `End With
Picture1.Print Word
( s  N& [& D. Q" V: m: h" DEnd Function
'定义画点函数
' H& f1 j$ f, K0 s0 ^Private Function DrawDot(Px, Py, Color)
Picture1.PSet (Px, Py), Color
' B) b$ ], Q4 y8 [) zEnd Function
Sub XY() '建立直角坐标系
/ Z& q, B4 @* t( e5 |) U3 EPicture1.DrawWidth = 1 '设置线条宽度
Picture1.Cls
, p7 b+ C2 X0 o3 w'设定用户坐标系，坐标原点在Picture1中心
; n/ V- ]# w" \) Q. qPicture1.Scale (-10, 10)-(10, -10)
Picture1.Line (-10, 0)-(10, 0), RGB(0, 0, 255)
  K/ Z& t8 p. j# z2 MPicture1.Line -(9.5, 0.5), RGB(0, 0, 255)
! w" d: {9 _  e3 D5 iPicture1.Line (10, 0)-(9.5, -0.5), RGB(0, 0, 255)
( u4 U- S# D3 ?4 CPicture1.ForeColor = RGB(0, 0, 255)
Picture1.Print "X"
/ h/ j' P8 t. J% d'画 X 轴
Picture1.Line (0, -10)-(0, 10), RGB(0, 0, 255)
Picture1.Line -(0.5, 9.5), RGB(0, 0, 255)
' Y/ z! Z" R5 I3 dPicture1.Line (0, 10)-(-0.5, 9.5), RGB(0, 0, 255)
Picture1.Print "Y"
'画 Y 轴
For lin = -9 To 9
& `6 f0 r& k8 V7 oPicture1.Line (lin, 0)-(lin, 0.25)
wor = PrintWord(lin - 0.5, -0.5, Str(lin))
! \3 D5 ?% l2 x5 }Picture1.Line (0, lin)-(-0.25, lin)
If lin &lt;&gt; 0 Then
7 a/ S7 E6 p) ?, u4 z/ Qwor = PrintWord(-0.9, lin, Str(lin))
End If
Next lin
Picture1.DrawWidth = 1
End Sub
& ?- o" K# @1 SPrivate Sub cmdPlot_Click()
6 m3 A2 F+ W' {% e$ j( {9 {) @. q* L9 c/ HXY
$ O' ~3 G( M/ MOn Error Resume Next
Dim x As Double, Y As Double
Randomize
  
        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)
% E5 [( ~6 |5 ~- H. Z, y) D  w         DoEvents
          Picture1.PSet (x, Y), RGB(250, 0, 0)
  x  m0 |0 s# [( J" |          Next x
/ A! U" h" G7 M# h' P- w+ S) iEnd Sub</P><>rivate Sub Command2_Click()
XY
  F" Q/ i6 g- H, `End Sub</P><>rivate Sub Command3_Click()
  d6 b5 i! L% N; m- ~! g9 U- F$ sEnd
End Sub</P><>
) R2 a- ^( U2 _3 i. s* E( [- ]9 tPrivate Sub Form_Load()
5 h% v7 I9 W/ I, s! L6 Y% xMe.Caption = "美丽曲线——山东省商河一中路来民"
2 S3 `# N) f1 ]# C+ x, r; t& CMe.Show
Me.AutoRedraw = True
, O5 s  i/ r$ n4 B. OXY
* l$ i2 B/ u+ a- CEnd Sub
# P, D: X4 ?! N$ M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>

USER001

把完整代码发上来