最近开始看CAD的二次开发……但是实践的时候遇到一个问题，每次出现ThisDrawing都会出错
, Q8 T# ]" `7 s* M- rName 'ThisDrawing' is not declared. 6 b# o* O/ G. e4 i. R6 x1 `
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下面是在网上原样copy的教学程序，可是却在所有的thisdrawing处出错，各位大侠帮忙解决一下吧……many thx……% z. c6 v5 z- W* @5 t' k
因为我是菜鸟，可能里面有一些非常弱智的问题……大家见笑了$ n; W6 T) O! m5 d& V$ f
5 I9 f* O0 g& P) z4 T' X; j——————————————
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Imports AutoCAD6 f7 M; N( y V- P# |- B# y
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Public Class Form16 ~% U, F! B" F1 q
Sub Ch2_ConnectToAcad()
X; J$ o$ b& L/ i" W7 | Dim acadApp As AcadApplication/ T! w/ ?+ H* g% E- D7 m
On Error Resume Next! S: O) ?: R0 @- v0 E
5 w; H D# ?0 T2 X1 S acadApp = GetObject(, "AutoCAD.Application")
6 Z* f/ p! W) ?# G/ v7 {- i; i$ z% t If Err.Number Then
5 o% c! m' [) j2 p7 ^2 X4 W Err.Clear()
% k& L4 F2 j+ z" U% ^ acadApp = CreateObject("AutoCAD.Application")
4 Y9 S- x) w" f' u If Err.Number Then
, \$ z' B! b s( | MsgBox(Err.Description)$ `( t. n( z, u7 [
Exit Sub
& `! _- F8 C+ s- l End If
! X" ~6 m2 {# v! @ End If" u! z9 o! \& a N
MsgBox("Now running " + acadApp.Name + _) a3 Q$ d0 K; o% n
" version " + acadApp.Version)/ {7 p' B1 b7 D# W5 C
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End Sub
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Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load7 D2 C9 e$ {) h- x. X
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End Sub' `' k# q1 R! _ e: k7 C" R
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' H# J* K4 r6 N( c; I Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
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Dim Arc As AutoCAD.AcadArc( R1 ~. y0 E) \8 l" L# Q
Dim Pnt As Object6 m' U9 _3 [8 C; G+ L. f. S
Err.Clear()+ s" g7 ~0 l* V% E
On Error Resume Next
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'选择圆弧
, W; v% F. N& @. I' x( ~ t6 l ThisDrawing.Utility.GetEntity(Arc, Pnt, "请选择圆弧：")
2 Q- N H+ y/ S If Err.Number <> 13 And Err.Number <> 0 Then Exit Sub/ a9 C; h7 t# \1 |8 e5 _9 C
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Do Until Arc.ObjectName = "AcDbArc"0 ~5 Z9 t# u' V; R
Err.Clear()
$ H# Z' }+ p, F1 C ThisDrawing.Utility.GetEntity(Arc, Pnt, "你所选的不是圆弧，请重新选择圆弧：")
5 ~! W9 E6 L+ Q# i* d1 P8 `9 \ If Err.Number <> 13 And Err.Number <> 0 Then Exit Sub
: Q, H4 }; _+ D7 e+ U Loop, V+ G* Y6 h0 L0 P* x8 W
- ]: n4 A# M) D' d2 n '获取圆弧各属性
. e ^2 J9 ?6 W0 R4 U: ]9 x Dim Leng As Double) q5 |" W# f+ M7 \- |) U3 n) i
Dim SPnt As Object& t9 ^" R" O+ U' Z0 y- P0 t: Y8 W& \
Dim EPnt As Object
. w- r$ O9 q5 A1 L+ L Dim CPnt As Object7 x3 P0 J0 c3 C* m4 n, C
Leng = Arc.ArcLength. v& g, V( }/ O
SPnt = Arc.StartPoint
+ E6 h- f2 m+ e0 F& Z, e; w; ~ EPnt = Arc.EndPoint: [$ U. e0 T0 [: b" Z+ L/ y% n; l! D
CPnt = Arc.Center2 Q- ?& }" j8 x7 j& ^
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'选择标注点7 a- b m7 @: ]- Y' |- l6 X- k4 @1 r; F
Dim PntforDim As Object
0 v4 R; k8 s0 a( D# [% j6 ? PntforDim = ThisDrawing.Utility.GetPoint(, "选择标注点位置："); M- P% p3 E6 n" [% `2 e0 U2 F- A( }
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'对圆弧进行角度标注- Q4 t: p w9 `
Dim DimAng As AutoCAD.AcadDim3PointAngular
( q- o" k& m/ |$ ` n DimAng = ThisDrawing.ModelSpace.AddDim3PointAngular(CPnt, SPnt, EPnt, PntforDim)
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: ^8 N# X y. g! B9 K '获取角度标注的精度控制(小数点位)# U# O' ^0 K8 Z9 E6 w
Dim FormatDot As Integer1 a: J( `5 j) S; I) A# `. [# A
Dim FormatTxt As String" }9 j& g4 S% n! w. W7 H5 C
FormatDot = DimAng.TextPrecision( Z) t4 m3 i; V, H: x2 P0 O
'转换为精度控制格式
8 C" z( B% G( T) Q FormatTxt = "0."5 f$ _8 Y$ m: u8 r o0 X+ a
Dim I As Integer
4 }6 h. {$ A+ I. ]+ T- ]' Q2 e For I = 0 To FormatDot
% I9 |+ R9 y- C0 z! r; o* B If I > 0 Then1 y& s' @8 [0 V8 i) `
FormatTxt = FormatTxt & "0"* t4 T4 e0 O2 w/ H& j/ W. p
End If! L1 H% s% y4 v
Next
9 c+ z3 D6 M8 | '更改角度标注的文字内容
& ], M) i2 p0 h! s9 ? DimAng.TextOverride = Format(Leng, FormatTxt)% I3 v+ P; p5 D6 M" H1 B n( H
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End Sub
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End Class |
发表于 2007-6-10 16:16
楼主
哈哈 
