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Integrate OCAF in MFC-Application

David B.'s picture
Forums: 

Hello OCC-Folks!

i have an MFC-Application with OCC, i use OCC for geometric stuff, now i want to integrate OCAF.

Can anyone give me a very litte, minimum example how to use OCAF with MFC, i know about the OCAF-example, but i use VS2005 and this OCAF-example does not work with that. Apart from this (i tried OCAF-example with VS2003), i generally have problems with understanding of OCAF, i also read the documentation to OCAF. I want to add an menu-item for creating an OCAF-App, and save this one, later open this one. Then use the Data(OCAF)-Browser and explore through the OCC-components hierarchy (geometry, etc.).

I need OCAF for my master thesis, and i would appreciate all hints, cause OCC in my opinion is not simple to learn for a CAD/CAM-Beginner (i spend so many hours, but the results are poor), cause its to much stuff and the documentation and the demo examples.

I hope you can help me,

greetings,

David B.

Patrik Müller's picture

Hi David,

whats your problem with the example from OCC?

Greets,

Patrik

mamadou sy's picture

Hi Patrick,
I am also in bad need of using OCAF for an application related to my research project as a graduate student. If you have a working OCC Ocaf file, could you please send it to me.
I need to be able to read assembly component as well as attach non geometric data (documents on it).How can I solve this. Thank you very much in advance.

Patrik Müller's picture

Hi,

I would suggest you build an OCAF application with Appwizard. After that I would use XCAFApp_Application and Handle_TDocStd_Document as base for further development.
Read about the XDE classes and add the documents to your needed labels (TDF_Label).

Now its your turn for implementation ;-)

Greets,

Patrik

mamadou sy's picture

Thank you for the reply Patrick. But I am a newbie so If you can explain more clearly it would be nice.
Also, I was trying to read a simple step file.
Here is my code and the errors I go:

Handle(TDocStd_Document) doc;

STEPCAFControl_Reader reader;
IFSelect_ReturnStatus readstat = reader.ReadFile("screw.step");
if ( !reader.Transfer ( doc ) ) {

cout

}
----
Error:

Creating library ../../Debug/TexturesExt.lib and object ../../Debug/TexturesExt.exp
TexturesExt_Presentation.obj : error LNK2001: unresolved external symbol "public: virtual int __thiscall XSControl_Reader::NbRootsForTransfer(void)" (?NbRootsForTransfer@XSControl_Reader@@UAEHXZ)
TexturesExt_Presentation.obj : error LNK2001: unresolved external symbol "public: __thiscall Handle_XSControl_WorkSession::~Handle_XSControl_WorkSession(void)" (??1Handle_XSControl_WorkSession@@QAE@XZ)
TexturesExt_Presentation.obj : error LNK2001: unresolved external symbol "public: unsigned int __thiscall STEPCAFControl_Reader::Transfer(class Handle_TDocStd_Document &)" (?Transfer@STEPCAFControl_Reader@@QAEIAAVHandle_TDocStd_Document@@@Z)
TexturesExt_Presentation.obj : error LNK2001: unresolved external symbol "public: enum IFSelect_ReturnStatus __thiscall STEPCAFControl_Reader::ReadFile(char * const)" (?ReadFile@STEPCAFControl_Reader@@QAE?AW4IFSelect_ReturnStatus@@QAD@Z)
TexturesExt_Presentation.obj : error LNK2001: unresolved external symbol "public: __thiscall STEPCAFControl_Reader::STEPCAFControl_Reader(void)" (??0STEPCAFControl_Reader@@QAE@XZ)
TexturesExt_Presentation.obj : error LNK2001: unresolved external symbol "public: __thiscall Handle_STEPCAFControl_DictionaryOfExternFile::~Handle_STEPCAFControl_DictionaryOfExternFile(void)" (??1Handle_STEPCAFControl_DictionaryOfExternFile@@QAE@XZ)
../../Debug/TexturesExt.exe : fatal error LNK1120: 6 unresolved externals
Error executing link.exe.

TexturesExt.exe - 7 error(s), 0 warning(s)
--
I really appreciate your help as this is slowing me down big time.
here is my email in case you can send me a working sample Xde: madou007@hotmail.com

Patrik Müller's picture

Hi,

you have to link more libs. For a fast solution link "TKXCAF.lib", "TKXCAFSchema.lib" and "TKXDESTEP.lib" to your project. If there are still some linking errors please test some other libs...

Greets,

Patrik

mamadou sy's picture

THank you for you reply. I think I am missing the basics of OCC although I can compile and execute all the Mfc simple even the OCAF and do some modification etc. I some times include the .hxx include files but I have never integrate the .lib as you have mentionned. In addition to this, I cannont find the TKXCAF.lib files in the include directory files OCC\ros\inc.
Excuse my ignorance on this as I am not a programmer but an mechanical engineer.
Please help me find my solution to move ahead.

Thank you again.

Patrik Müller's picture

Hi,

you find the libs at: "..\ros\win32\lib" (depending on your installation). You can take a look at the OCC examples for library inclusion in the "stdafx.h" files.

Greets,

Patrik

mamadou sy's picture

Thank you so much Patrick. I really appreciated this help because I am working on OCC night and day without any progress.
I saw the lib and open the one "stdafx.h" file located in C:\OpenCASCADE5.2\samples\standard\Mfc\02_TopologySamples\02_4_TopologyAnalysis. I usually open the .dsw file, compile and see if it works and it does all the time. And in this "stdafx.h", the lib files includes are not between comments if I understand very well: /*
#ifndef Version15B
# ifndef Version15D
# ifndef Version20
# define Version15B
# endif // Version20
# endif // Version15D
#endif // Version15B

#pragma message ("=============================")
#ifdef Version15B
# pragma message ("Set the libs for version 1.5B")
#endif // Version15B

#ifdef Version15D
# pragma message ("Set the libs for version 1.5D")
#endif // Version15D

#ifdef Version20
# pragma message ("Set the libs for version 2.0 ")
#endif // Version20
#pragma message ("=============================")

#ifdef Version15B
# pragma comment (lib,"TKTop.lib")
# pragma comment (lib,"TShort.lib")
# pragma comment (lib,"TColQuantity.lib")
#endif

#ifdef Version15D
# pragma comment (lib,"TKTop.lib")
#endif

#ifdef Version20
# pragma comment (lib,"TKTop1.lib")
# pragma comment (lib,"TKTop2.lib")
#endif

#pragma message ("Set the specific libs for the application")
# pragma comment (lib,"TKPrs.lib")
# pragma comment (lib,"TKGeom.lib")
# pragma comment (lib,"TKGlt.lib")
# pragma comment (lib,"TKGraphic.lib")
# pragma comment (lib,"TKPrsMgr.lib")
# pragma comment (lib,"TKViewers.lib")
# pragma comment (lib,"TKSession.lib")
# pragma comment (lib,"TColgp.lib")
# pragma comment (lib,"TKernel.lib")
*/
I wonder what would be the effect of removing the comment. I will try to do the same in my sample program and see how it works.

Thank you again.