谈谈UG的external模式

stephen zhang

有人问我ug的external模式.
这是UG二次开发不需要UG界面时使用的一种模式。UG Open只开放了部分的API提供支持。
internal模式是UG的插件方式调用。
所以，即使是external模式也不能够脱离UG运行。
  Y+ f0 j$ i. j/ W4 l: T以前，使用C/C++开发时，internal的程序是dll，而external的程序是exe。
采用.net语言，internal也可以写成exe。
9 S" Y- D8 l& O, u+ Cinternal使用的是UG规定的入口函数，比如Main、Starup
external只有一个入口函数Main
+ f3 A& T" Y9 F  r6 g3 S虽然UG两种开发模式都使用同一套API，但是支持与否要看说明。
' t* G: ?3 H3 y6 F3 J比如
UF_PART_open (view source)
( P$ j% Y6 A5 }1 R
Defined in: uf_part.h

  V+ e4 u! ]6 O! POverview
  P5 [# z7 b+ v+ _( e& fRetrieves an existing NX part or Solid Edge part into the session and
  R$ d3 }, }& ]% e$ H6 t' Amakes it the work and display part. Solid Edge parts (.par, .psm, .pwd or .asm
2 T; b5 D8 L3 W3 B$ h4 Afile extension) are opened by extracting the Parasolids data from the Solid
& Q+ {* j5 l' e0 {- \3 V: o0 _6 HEdge part and then importing this data into a new NX part
- I$ c& k) B; Z+ V: w* o1 ewith a .prt extension. The file name of the new NX part has the Solid
Edge part name and a ".prt" file extension. If there is an existing NX
! ?" e' V. l' E  E3 A: h3 Lpart with the same name as the Solid Edge part, then this function
6 K5 ?7 k0 V1 Q: g! P$ X5 [4 }  ?returns an error.
The NX part file that you create by opening a Solid Edge part
, r1 F3 {4 X) Z/ ~  Zfile contains one or more unparameterized solid bodies.
* C1 N- T9 U. N' Y: p( ?Other files can be opened with this call. The following
; b/ z0 h3 {) t, ?. N4 i( m! @3 Dextensions are valid - .udf, .bkm, .xpk and .jt. Foreign files with the
following extensions can also be opened with UF_PART_open - .igs, .stp,
6 ]; f1 @: l- B: r' b.dxf, .dwg and .model.
If a part is a read-only part, and the part retrieval modifies the part,
) D6 X2 L9 [7 s: eyou will receive the error code UF_PART_err_read_only_modified, for that
: y: F2 `7 T7 k6 X8 V. Tpart when you call UF_PART_open. In this case UF_PART_open will not
return a zero status.

5 |: a: ?, E$ k0 d% NEnvironment
Internal and External
3 [1 v' ~6 v# K, v; F, s==========================
9 g) d4 b$ y; S; vUF_DISP_create_image (view source)
& U8 l8 y6 y- b& ^1 ]  ~/ S5 }
9 `$ |- G; p: eDefined in: uf_disp_ugopenint.h

  D) L, L! |1 `& K$ mOverview
Export a PNG/JPEG/TIFF/GIF/XWD/BMP full window area image
- P; ]- k3 X6 k# C( x# P2 J6 xCreates an image file with the file type you specify using the image
' b/ F! F0 I  s7 ^currently displayed in the graphics window.
+ O; s6 O% A0 M4 l3 m( C
$ o9 P2 Z% h: U$ w( Q5 nReturn
) {, ^$ z8 l" O* ^' m6 Q: i, UReturn code:
1 E4 @" e) c5 x. u= 0 No error
= not 0 Error code, including:
6 w3 |, A1 E+ j$ j4 r2 uUF_DISP_err_failed_to_create_image_file
Standard UF error codes
! T& X( F# G3 I/ r" Q7 @' S" L
Environment
Internal
UF_DISP_create_image (view source)
9 e/ J% x1 v+ \
Defined in: uf_disp_ugopenint.h

Overview
2 _. Z) a; L) XExport a PNG/JPEG/TIFF/GIF/XWD/BMP full window area image
Creates an image file with the file type you specify using the image
currently displayed in the graphics window.
5 D; `" A1 A& E2 p# a5 I
8 W. i. W& J0 M# f: D: N6 UReturn
1 B3 }% }5 [+ ]4 Q; WReturn code:
" k2 ]7 t6 I' G2 @$ G= 0 No error
1 e' v1 k9 h6 W= not 0 Error code, including:
& V) g: c  |  K, {) |UF_DISP_err_failed_to_create_image_file
6 r5 L* i, r; n% s: q: s" l; ]. qStandard UF error codes
. a) ]0 ?6 n5 r4 U7 `
Environment
  U. E! {& v5 }( [- w$ HInternal
另外，如果要运行external模式，需要把UGII目录加入到Windows的Path路径下，否则运行时找不到dll
2 n/ B6 r5 Q2 b; f9 e2 d$ B这是用.net做的external程序示例
! @/ B( g, D( f. z4 O view plaincopy to clipboardprint?
try  
* z' a8 ~) ?9 i8 Z( ]        {   
3 D: g/ S, f( s" J. Q            Session theSession = Session.GetSession();   
# x' a6 x" ?; v$ v            Console.WriteLine("OK");   
  
            Part thePart = theSession.Parts.NewDisplay(@"E:\UGNX6\test.prt", Part.Units.Millimeters);   
            PartSaveStatus ps = thePart.Save(NXOpen.BasePart.SaveComponents.True, NXOpen.BasePart.CloseAfterSave.True);   
& `3 ?* @+ ~! ]  h( U* N  
            Console.WriteLine(ps.ToString());   
        }   
        catch (NXOpen.NXException ex)   
        {   
            Console.WriteLine(ex.ToString());   
        }

matilian11

请问可否传个外部开发的实例
+ D- [7 I3 F7 b) u+ t! N谢谢

achuan

太深奥了。。。