C / C++ / MFC

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Compiler directives Ruca12-Sep-02 1:20 Ruca 12-Sep-02 1:20  Hi, I have 2 projects ( project A and B)which use most of the same functions, but there are others which are unique to project A and others to B. I would like to be able to use a #define to compile Project A with its own functions and then by changing the #define compile project B with its functions. In other words, I would like to avoid defining 2 different projects. Is this possible? And how does one do it, both in the header and source code files? Thanking you in anticipation. Rui Re: Compiler directives Tomasz Sowinski12-Sep-02 1:29 Tomasz Sowinski 12-Sep-02 1:29  You can use #ifdef and friends for conditional compilation. Your other option is to create a library containing common code. Tomasz Sowinski -- http://www.shooltz.com To some its a six-pack, to me it's a support group Ouput data Kash12-Sep-02 1:15 Kash 12-Sep-02 1:15  I am running numerical code and want to print the results in a scrollable edit box and I want to save this data in an array? Any ideas? Kash Re: Ouput data Christian Graus12-Sep-02 2:10 Christian Graus 12-Sep-02 2:10  iostreams - check out my articles here on CP. Christian Hey, at least Logo had, at it's inception, a mechanical turtle. VB has always lacked even that... - Shog9 04-09-2002 During last 10 years, with invention of VB and similar programming environments, every ill-educated moron became able to develop software. - Alex E. - 12-Sept-2002 Re: Ouput data Jawache12-Sep-02 3:28 Jawache 12-Sep-02 3:28  Too Vague Kash. Ask something more specific or give more details. Asim Hussain e: asim@jawache.net w: www.jawache.net Splitter Window with 2 views with MFC Chun Te, Ewe12-Sep-02 0:58 Chun Te, Ewe 12-Sep-02 0:58  Dear All, I would like to have 2 different views for a document. Each view to be display one at a time or together using a splitter window at any point of time. How best should I approach this? I'm open to any new ideas. I've just started programming and I think my question will be trivial to most of you out there. Thanks very much for taking the time to help me out Regards, Chun Te Re: Splitter Window with 2 views with MFC Jawache12-Sep-02 1:14 Jawache 12-Sep-02 1:14  If when you say different views you mean, different view classes, then you should use a Splitter Window and create static views, look at MSDN. Its difficult to create a Static Splitter window which can turn into a single window since the Splitter Asserts if there is only once view. have a look in the Splitter Section of codeproject.. there might be some ideas you can use. Asim Hussain e: asim@jawache.net w: www.jawache.net Re: Splitter Window with 2 views with MFC JohnnyG12-Sep-02 2:37 JohnnyG 12-Sep-02 2:37  I've used this class, ST_SplitterWnd,to do just what you want. I have two views which are the same because the view has a tab control. The dual views allows the user to see two different tabs of data at once, if desired. It is here on Code Project in the Articles section. BTW, the class has a nice function called ToggleSide() which allows hiding one of the views. Thus, you can add both views and hide one and the user only sees one. But, when the user wants a second view, you just call ToggleSide() again. Dll in release mode.... Neha12-Sep-02 0:39 Neha 12-Sep-02 0:39  Hi, I have written a MFC Extended dll.It works fine in Debug mode.In Release mode if i use /MDd it works.But if i use /MD it crashes. Could any one pl tell me why is it happening so? Thanks Neha Re: Dll in release mode.... Tomasz Sowinski12-Sep-02 0:45 Tomasz Sowinski 12-Sep-02 0:45  You have probably screwed something with project settings. What exactly crashes? Tomasz Sowinski -- http://www.shooltz.com To some its a six-pack, to me it's a support group Re: Dll in release mode.... Neha12-Sep-02 0:53 Neha 12-Sep-02 0:53  A third party dll(IMGSCAN.OCX)loads my dll(It is a TWAIN Datasource).If i use /MD configuration it says access violation in imgscan.ocx . Re: Dll in release mode.... Tomasz Sowinski12-Sep-02 1:18 Tomasz Sowinski 12-Sep-02 1:18  You've mentioned in original post that your dll is 'MFC extended'. There are two kinds of MFC-based DLLs: MFC extensions DLLs and regular MFC dll. If you have MFC extension DLL, then it can be used only by .exe which link to MFC as well. If 3rd party module is not using MFC, then you're heading into crashland. Tomasz Sowinski -- http://www.shooltz.com To some its a six-pack, to me it's a support group Re: Dll in release mode.... Neha12-Sep-02 1:47 Neha 12-Sep-02 1:47  It is a MFC extension dll. 3rd party module does uses MFC. Re: Dll in release mode.... Tomasz Sowinski12-Sep-02 1:52 Tomasz Sowinski 12-Sep-02 1:52  You mean the program hosting .ocx? Does it link dynamically with MFC? Tomasz Sowinski -- http://www.shooltz.com To some its a six-pack, to me it's a support group Re: Dll in release mode.... Neha12-Sep-02 2:03 Neha 12-Sep-02 2:03  I don't have the code for host application.So i don't know anything. Also it works fine, if i link my MFC dll using static library. Re: Dll in release mode.... Tomasz Sowinski12-Sep-02 2:10 Tomasz Sowinski 12-Sep-02 2:10  The rule is quite simple: you can create MFC extension .dlls *only* if client app (the OCX host in your case) is linking dynamically with MFC. Seems you'll have to switch to regular DLL or link statically. Tomasz Sowinski -- http://www.shooltz.com To some its a six-pack, to me it's a support group Re: Dll in release mode.... Neha12-Sep-02 2:18 Neha 12-Sep-02 2:18  If i switch to regular dll also i will get that problem. Any idea? Re: Dll in release mode.... Tomasz Sowinski12-Sep-02 2:23 Tomasz Sowinski 12-Sep-02 2:23  If you switch to regular DLL then your .dll interface must be C-style, e.g. no MFC objects passed around --and-- each exported function must have AFX_MANAGE_STATE macro. Tomasz Sowinski -- http://www.shooltz.com To some its a six-pack, to me it's a support group Re: Dll in release mode.... Neha12-Sep-02 2:41 Neha 12-Sep-02 2:41  I had tried that but same result. If i a)link statically or dynamically OR b)make it a regular or extension dll also if i have MTD or MDD then only it works in the release mode. Re: Dll in release mode.... RChin12-Sep-02 6:02 RChin 12-Sep-02 6:02  Just an obvious note, but make sure that you are using the appropriate dll build. The debug and release compilation of your dlls are not compatible! The debug DLL produced will NOT work with the release build of the client using it. Debug Client -> Debug DLL [AND] Release Client-> Release DLL. -Chin- Re: Dll in release mode.... Mike Nordell12-Sep-02 6:04 Mike Nordell 12-Sep-02 6:04  Neha wrote: Could any one pl tell me why is it happening so? It's most certainly because of you limiting the input set. Last I checked "pl" was the country letters for Poland, and if you only want answers from Poland, perhaps you have stumbled in on the wrong site? Yes, I'm an a**hole, but at least I try to spell! template class linking problem Anonymous12-Sep-02 0:13 Anonymous 12-Sep-02 0:13  I created a CDblyLinkList<t> class and put into DblyLinkList.h and DblyLinkList.cpp file in a common folder of many projects. In the header file declaring CTIFRowset, of a DLL project, I included "..\common\DblyLinkList.h", and the class has a variable m_rowlist of CTIFRowList, which is typedefed in CTIFRow header file as CDblyLinkList<ctifrow *="">. The CDblyLinkList.h and CDblyLinkList.cpp were added to the DLL project. When I built it, all compiles correctly, but i got many linking errors like: Tracy error LNK2019: unresolved external symbol "public: __thiscall CDblyLinkListIterator<class ctifrow="" *="">::CDblyLinkListIterator<class ctifrow="" *="">(class CDblyLinkListIterator<class ctifrow="" *=""> &)" (??0?$CDblyLinkListIterator@PAVCTIFRow@@@@QAE@AAV0@@Z) referenced in function "public: __thiscall CTIFRowset::CTIFRowset(class CTIFRowset &)" (??0CTIFRowset@@QAE@AAV0@@Z) Re: template class linking problem Tomasz Sowinski12-Sep-02 0:16 Tomasz Sowinski 12-Sep-02 0:16  Did you create CBlyLinkListIterator copy constructor? Or is it only declared in .h file? Tomasz Sowinski -- http://www.shooltz.com To some its a six-pack, to me it's a support group Re: template class linking problem Anonymous12-Sep-02 0:56 Anonymous 12-Sep-02 0:56  yes, i did declared the copy constructor. The error I shown was a instance of error. Actually, it has many, such as: Tracy error LNK2019: unresolved external symbol "public: class CDblyLinkListIterator<class ctifrow="" *=""> __thiscall CDblyLinkList<class ctifrow="" *="">::end(void)" (?end@?$CDblyLinkList@PAVCTIFRow@@@@QAE?AV?$CDblyLinkListIterator@PAVCTIFRow@@@@XZ) referenced in function "public: __thiscall CTIFRowset::CTIFRowset(class CTIFConnection *)" (??0CTIFRowset@@QAE@PAVCTIFConnection@@@Z) Tracy error LNK2019: unresolved external symbol "public: __thiscall CDblyLinkListIterator<class ctifrow="" *="">::CDblyLinkListIterator<class ctifrow="" *="">(class CDblyLinkListIterator<class ctifrow="" *=""> &)" (??0?$CDblyLinkListIterator@PAVCTIFRow@@@@QAE@AAV0@@Z) referenced in function "public: __thiscall CTIFRowset::CTIFRowset(class CTIFRowset &)" (??0CTIFRowset@@QAE@AAV0@@Z) Tracy error LNK2019: unresolved external symbol "public: void __thiscall CDblyLinkList<class ctifrow="" *="">::erase(class CDblyLinkListIterator<class ctifrow="" *="">)" (?erase@?$CDblyLinkList@PAVCTIFRow@@@@QAEXV?$CDblyLinkListIterator@PAVCTIFRow@@@@@Z) referenced in function "public: bool __thiscall CTIFRowset::Delete(void)" (?Delete@CTIFRowset@@QAE_NXZ) The declaration was in a .h file, and implementation was in a .cpp file. Re: template class linking problem Jawache12-Sep-02 1:17 Jawache 12-Sep-02 1:17  I think in Template Classes you have to add an include statement to the implementation file in the header file. Asim Hussain e: asim@jawache.net w: www.jawache.net

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