谈谈UG的external模式

stephen zhang

有人问我ug的external模式.
- l' D, z$ y, p) ~# z7 w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。
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。
3 j; K' y4 J# P2 t0 Y) n/ J* Tinternal使用的是UG规定的入口函数，比如Main、Starup
& \! K( G5 i" s& p, aexternal只有一个入口函数Main
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。
比如
* m) y) ?7 w/ _1 T& \) F2 |UF_PART_open (view source)

Defined in: uf_part.h
) ?4 H. Q9 J& c( c' {
# a/ o' s) R3 C$ \" l6 O8 h+ ]* OOverview
& }, q. Q( [  j. uRetrieves an existing NX part or Solid Edge part into the session and
, Q: @  H, B3 V& D# V% Jmakes it the work and display part. Solid Edge parts (.par, .psm, .pwd or .asm
* I4 }( F9 R8 q# N/ M7 _file extension) are opened by extracting the Parasolids data from the Solid
Edge part and then importing this data into a new NX part
with a .prt extension. The file name of the new NX part has the Solid
  O! @; w' b0 }+ qEdge part name and a ".prt" file extension. If there is an existing NX
part with the same name as the Solid Edge part, then this function
7 q6 ^3 x2 G& [' p8 v9 lreturns an error.
5 {9 B) J: e6 U2 }' C8 GThe NX part file that you create by opening a Solid Edge part
file contains one or more unparameterized solid bodies.
# C' R2 y: G* N/ M) EOther files can be opened with this call. The following
/ f! z/ W3 c/ M5 H3 W5 Nextensions are valid - .udf, .bkm, .xpk and .jt. Foreign files with the
following extensions can also be opened with UF_PART_open - .igs, .stp,
.dxf, .dwg and .model.
If a part is a read-only part, and the part retrieval modifies the part,
3 u1 [9 u$ _: C! ]you will receive the error code UF_PART_err_read_only_modified, for that
part when you call UF_PART_open. In this case UF_PART_open will not
return a zero status.
4 o/ g: h7 @/ ]2 c
Environment
Internal and External
  T; ?5 Y$ Q, w==========================
UF_DISP_create_image (view source)

& ?5 B4 {5 ^1 vDefined in: uf_disp_ugopenint.h

" u# L0 s3 f# @/ BOverview
1 w: w) p+ k% I, _0 ?Export a PNG/JPEG/TIFF/GIF/XWD/BMP full window area image
Creates an image file with the file type you specify using the image
; E$ G8 J. a( `0 Jcurrently displayed in the graphics window.
  W) V0 b: L6 Y# e& x' ^9 z: U
- J' a  `6 y/ @) K% f( M: L* pReturn
) o& c  Z# _/ Y/ ^& P3 ]2 CReturn code:
" U1 _4 A" B' H9 i3 S; M= 0 No error
= not 0 Error code, including:
UF_DISP_err_failed_to_create_image_file
Standard UF error codes

Environment
Internal
8 @& D: C2 W+ q, Q. sUF_DISP_create_image (view source)

7 |- i0 g0 ]/ PDefined in: uf_disp_ugopenint.h
8 [; T! v* P. B  M  p
3 i& e/ J3 V! ]Overview
2 p+ Q, f+ \, E( s6 C7 qExport a PNG/JPEG/TIFF/GIF/XWD/BMP full window area image
/ t- b& w, J# _# q" m2 ACreates an image file with the file type you specify using the image
currently displayed in the graphics window.

Return
Return code:
= 0 No error
= not 0 Error code, including:
- p* j; A' J0 V" p/ D9 E2 h% s) p9 c! rUF_DISP_err_failed_to_create_image_file
# u2 }7 Q/ p( J% y% r) sStandard UF error codes
2 V% W  p9 N- ]3 u. w3 U1 m. @
Environment
+ @1 u" K; L3 q$ u" X2 q) 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
这是用.net做的external程序示例
8 d/ Y9 r0 j% `4 ] view plaincopy to clipboardprint?
( n/ |6 n) A* a2 L# Utry  
1 U) f' n* {; i3 ^6 X5 R        {   
5 f5 K+ u; ~# [2 v1 W% {            Session theSession = Session.GetSession();   
; x# h% x1 I9 Z' Y; t            Console.WriteLine("OK");   
. m4 N2 [/ |+ b3 f7 F! s  
# B. \" e7 Y$ {9 [            Part thePart = theSession.Parts.NewDisplay(@"E:\UGNX6\test.prt", Part.Units.Millimeters);   
! c% {; @0 D8 M# v            PartSaveStatus ps = thePart.Save(NXOpen.BasePart.SaveComponents.True, NXOpen.BasePart.CloseAfterSave.True);   
) H; U9 j( I* d1 g5 p3 W  
7 d3 z# V9 W5 n- `            Console.WriteLine(ps.ToString());   
  ~% d% u8 w# k+ _! R        }   
, ?* k; Z$ V! r! {, l5 }! n& i7 E& c        catch (NXOpen.NXException ex)   
        {   
            Console.WriteLine(ex.ToString());   
8 \. |& C0 b+ u' j  x        }

matilian11

请问可否传个外部开发的实例
谢谢

achuan

太深奥了。。。