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Re: Prog in C: How to direct the system to print output to printer? Anonymous19-Dec-03 15:58 Anonymous 19-Dec-03 15:58  My problem is like this:(C Language) -for example to print an output as below to the monitor, Menu ==== .... we can use the source code as below, fprintf(stdout,"Menu"); fprintf(stdout,"===="); fprintf(stdout,"...."); -so can i print the same output using printer to produce hardcopy? -is there any file pointer that assume to the printer, as the "stdout" been assume to monitor. -on other hand, i also have the same problem with scanning input, isn there any specific file pointer for other input devices such as OMR, Barcode scanner, & etc. -maybe you can show me some of the example statement in C language. Re: Prog in C: How to direct the system to print output to printer? David Crow22-Dec-03 2:46 David Crow 22-Dec-03 2:46  Anonymous wrote: so can i print the same output using printer to produce hardcopy? Yes, use stdprn instead of stdout. Five birds are sitting on a fence. Three of them decide to fly off. How many are left? problem occured when using 'stdprn'... Cheng Jin Kang7-May-04 18:46 Cheng Jin Kang 7-May-04 18:46  when i start running the program by using file pointer call 'stdprn', problem occured where the preprocessor '# include <...>' for 'stdprn is not included in the source code. can i know which type of header file include this file pointer??? Re: problem occured when using 'stdprn'... David Crow10-May-04 2:38 David Crow 10-May-04 2:38  Admittingly, it's been over 10 years since I've used that particular stream. Back then I was using Borland C/C++ to create DOS programs. Maybe it's from that era that I remember it. There's the off-chance that you might could use: #define stdprn (&_iob[3]) "The pointy end goes in the other man." - Antonio Banderas (Zorro, 1998) How to detect driver's read/write attribute Lido Paul14-Dec-03 15:18 Lido Paul 14-Dec-03 15:18  I posted a thread about how to detect cdrw and MO,but it didn't get appropriate answer.I just use the way as showed below to do it. / ************************************************** ** BOOL GetDriveGeometry(HANDLE hDevice, PGET_MEDIA_TYPES pMediaTypes) { DWORD dwOutBytes; BOOL bResult; bResult = :eviceIoControl(hDevice, IOCTL_STORAGE_GET_MEDIA_TYPES_EX, NULL, 0, pMediaTypes, MEDIA_INFO_SIZE, &dwOutBytes, (LPOVERLAPPED)NULL); return bResult; } ************************************************** *** I can get all CD driver(including cdrom and cdrw,but just as CD driver) with GetDriveProperty.The reason why I get cdrw as CD driver because their value of "pMediaTypes->MediaInfo[0].DeviceSpecific.DiskInfo.MediaType" all is "CD_ROM". I want to know the driver's r/w attribute by its parameter of "pMediaTypes->MediaInfo[0].DeviceSpecific.DiskInfo.MediaCharacteristics" ,but result is still "read only". please give me some suggestion. thank you. Happy Gemini Looking for terminology Matthew Busche14-Dec-03 14:06 Matthew Busche 14-Dec-03 14:06  I'm working on a document and am looking to use standard terminology where possible: There are built-in data types (e.g., int, float, char*, etc) and there are objects. I'm looking for a commonly used term that refers to either. Is there such a term? Is there a name for the program initialization activity when global C++ objects are initialized at run time? (This happens before main() gets invoked I know, but what is this initialization activity called?) Thanks, Matt Re: Looking for terminology Prakash Nadar15-Dec-03 0:42 Prakash Nadar 15-Dec-03 0:42  for the first one it is identifier and for the second one startup, bootloader, prolog. My God is more powerfull Than Your God. (the line that divides the world) Re: Looking for terminology David Crow15-Dec-03 6:54 David Crow 15-Dec-03 6:54  Matthew Busche wrote: There are built-in data types (e.g., int, float, char*, etc) and there are objects. I'm looking for a commonly used term that refers to either. Is there such a term? Intrinsic types are built-in. Five birds are sitting on a fence. Three of them decide to fly off. How many are left? Resizable dialog window with no icon immo14-Dec-03 13:50 immo 14-Dec-03 13:50  Hi! I need to create resizable dialog window with title, close box and NO ICON. I tried to set resizing border and "hide" icon with resource editor but it looks impossible. When I set "palette window" true, icon disappears, but I don't need palette window. How to remove it? I tried to make icon transparent, but margin on title bar looks a bit strange Some MFC design issue..! Halloko14-Dec-03 12:21 Halloko 14-Dec-03 12:21  Hey all, I have a minor design issue here. I've uploaded this picture to illustrate it: http://www.blacksmith-studios.dk/example_dlg.jpg Imagine the user can select various actions in the list control on the left. Then I'd like to show some appropriate properties for the selected action. That is, the actions are different and therefore require a different set of properties. I've thought of the following solutions: - Make a borderless dialog and create it with the width and height that matches the right group-control's size (thus creating a new class for every new property window to handle the user interaction!?). - Make some kind of property list control.. It's just that I don't know if it's possible to display all the options I want in a listcontrol! Since I'm no expert at all on MFC I'd really like some of you guys' input on how to achieve the desired effect! Thanks in advance, Soren Dreijer Network Monitoring Chechi14-Dec-03 8:10 Chechi 14-Dec-03 8:10  I want to know the right code MFC to obtain the IP of the Current system and that of allthe nodes of the network it is sharing??? May the Lord bless thee abundantly Re: Network Monitoring David Crow15-Dec-03 6:56 David Crow 15-Dec-03 6:56  Chechi wrote: I want to know the right code MFC to obtain the IP of the Current system... Try gethostname() followed by gethostbyname(). Five birds are sitting on a fence. Three of them decide to fly off. How many are left? Re: Network Monitoring aroraavinash15-Dec-03 13:19 aroraavinash 15-Dec-03 13:19  i am going slightly out of track, but my question is that is it possible to obtain ipaddress of a computer, when it is not connected to network. say u run mfc application on your computer and it prints out the ipaddress of your machine. i was wondering if there was any function available in mfc for this purpose. thanks. Avi Re: Network Monitoring David Crow16-Dec-03 2:29 David Crow 16-Dec-03 2:29  aroraavinash wrote: i was wondering if there was any function available in mfc for this purpose. No, but there are plenty of classes available here at CP. Five birds are sitting on a fence. Three of them decide to fly off. How many are left? Re: Network Monitoring Chechi15-Dec-03 18:00 Chechi 15-Dec-03 18:00  I tried it and got the address as 127.0.0.1 and am not sure it is right or not.. Please do help.. May the Lord bless thee abundantly Re: Network Monitoring Tom Wright15-Dec-03 11:38 Tom Wright 15-Dec-03 11:38  Chechi wrote: and that of allthe nodes of the network it is sharing??? Take a look at: WNetEnumResource function continues an enumeration of network resources that was started by a call to the WNetOpenEnum function. Tom Wright tawright915@yahoo.com build errors pankajdaga14-Dec-03 6:11 pankajdaga 14-Dec-03 6:11  Hi all, I have the following situation: I have a MyDataSource.h and MyDataSource.cpp files that define and implement a simple C++ templated class: // MyDataSource.h file <code> #ifndef _MYDATASOURCE_H #define _MYDATASOURCE_H template <class T> class Test { public: Test(T * source); ~Test(); void TestMethod(); private: T* m_source; }; #endif </code> // MyDataSource.cpp file <code> #include "MyDataSource.h" template <class T> Test::Test(T * source) :m_source(source) {} template <class T> Test::~Test() {} template <class T> void Test::TestMethod() {} </code> However, when I compile this. I get the following build errors that I have been unable to resolve. i:\Thesis\Source Code\App\TemplateTests\MyDataSource.cpp(4): error C2955: 'Test' : use of class template requires template argument list i:\Thesis\Source Code\App\TemplateTests\MyDataSource.cpp(6): error C2244: 'Test<T>::__ctor' : unable to match function definition to an existing declaration i:\Thesis\Source Code\App\TemplateTests\MyDataSource.cpp(9): error C2955: 'Test' : use of class template requires template argument list i:\Thesis\Source Code\App\TemplateTests\MyDataSource.cpp(10): error C2244: 'Test<T>::~Test' : unable to match function definition to an existing declaration i:\Thesis\Source Code\App\TemplateTests\MyDataSource.cpp(13): error C2955: 'Test' : use of class template requires template argument list i:\Thesis\Source Code\App\TemplateTests\MyDataSource.cpp(14): error C2244: 'Test<T>::TestMethod' : unable to match function definition to an existing declaration However, if I put the implementation in the .h file, then everything compiles fine. What do I need to do to get rid of these errors? Thanks, Sincerely, Xargon Without struggle, there is no progress Re: build errors Ian Darling14-Dec-03 7:06 Ian Darling 14-Dec-03 7:06  pankajdaga wrote: What do I need to do to get rid of these errors? Do what you already tried - put it into the header file. VC++ (and almost all other C++ compilers) currently can't compile a template where the declaration of a template class is separate from it's implementation. This is addressed through the export template feature in the C++ standard. However, pretty much nobody supports it because it's a freaking pain in the arse to do. For the time being, keep it all in the same file. -- Ian Darling "The moral of the story is that with a contrived example, you can prove anything." - Joel Spolsky Re: build errors Steen Krogsgaard14-Dec-03 22:34 Steen Krogsgaard 14-Dec-03 22:34  Ian Darling wrote: VC++ (and almost all other C++ compilers) currently can't compile a template where the declaration of a template class is separate from it's implementation. This is addressed through the export template feature in the C++ standard. However, pretty much nobody supports it because it's a freaking pain in the arse to do. For the time being, keep it all in the same file. Sorry to say, but this is not entirely correct IMHO. The OPs problem is that he didn't use the right syntax as he forgot the template parameter after the class name: template <class T> Test<T>::Test(T* source) It's not necessary to define the template at the point of declaration (i.e. in the header file). It's perfectly legal to define the template in a cpp file. However, it's true that the declaration and the definition has to be in the in the same translation unit, and one solution to this is to put the definition in the header along with the declaration. I usually put the definition of template member functions in a .inc (include) file that is included at the end of the .h file, but that's just my personal preference. What is true is that you cannot export a template - you'll get a LNK2001 error. Since templates are a compile-time object it doesn't make sense to export it anyway, so the C++ standard should be changed to omit the export template feature. What you can do is export instantiations of the template (unless you use VC++ 6.0 which will give you an internal compiler error if you try). Cheers Steen. "To claim that computer games influence children is ridiculous. If Pacman had influenced children born in the 80'ies we would see a lot of youngsters running around in dark rooms eating pills while listening to monotonous music" Re: build errors Bo Hunter14-Dec-03 19:55 Bo Hunter 14-Dec-03 19:55  You can put it in its own cpp file. template <class T> class Test { public: Test(T * source); ~Test(); void TestMethod(); private: T* m_source; }; // in cpp template <class T> Test<T>::Test(T* source) { } template <class T> Test<T>::~Test() { } template <class T> void Test<T>::TestMethod() { } This works for me 2002 Thank You Bo Hunter Linking MFC code with non MFC code debsbunny714-Dec-03 0:59 debsbunny7 14-Dec-03 0:59  HI I'm trying to link two pieces of code. One is written using MFC and the other isn't. If I enable Debug Multithreaded DLL (in Project, Settings, C/C++, Code Generation) then the non MFC code generates multiple errors : "error LNK 2001 unresolved external " If I change Debug Multithreaded DLL to Debug Multithreaded then the non MFC code compiles correctly but the MFC code doesn't link and generates the following error. "fatal error C1189: #error: Please use the /MD switch for _AFXDLL builds" Does anyone know a way of linking the two projects together or of compiling them in the one VC++ environment but with different settings? Thanks Debs Re: Linking MFC code with non MFC code Mike Dimmick14-Dec-03 3:41 Mike Dimmick 14-Dec-03 3:41  The Debug Multithreaded DLL setting is correct. Please post your LNK2001 errors, then we might be able to assist. Typically it means you haven't linked a required import library (if referring to a system function) or that one module is compiled as C++, but the other as C, with the linker expecting mangled ('decorated') or non-mangled names, but getting the other, depending on which is which. Re: Linking MFC code with non MFC code debsbunny714-Dec-03 4:40 debsbunny7 14-Dec-03 4:40  Hi Mike The problem is that I am trying to use code that produces accurate time stamps from an NTP server in another piece of code that transmits packets of information across the network. I need to be able to accurately time the packet transmission. However my problem is that the NTP code that I'm using only compiles correctly when its set to Link to the static libraries whilst my transmission code is based on MFC and only compiles correctly when set to link with dynamic libraries. I know I'm not supposed to mix dynamic and static links. Is there any way around this problem? Do you know if i can link each piece of code seperately and still use the NTP code to obtain a timestamp in my transmission code or if I can change either of these pieces of code from static to dynamic or vice versa? I hope you can help me. I've been searching the web and I'm at my wits end. I've included the errors below for both settings. Thank you Debs Setting as Debug Multithreaded MFC_socket.cpp c:\program files\microsoft visual studio\vc98\mfc\include\afxver_.h(130) : fatal error C1189: #error : Please use the /MD switch for _AFXDLL builds StdAfx.cpp c:\program files\microsoft visual studio\vc98\mfc\include\afxver_.h(130) : fatal error C1189: #error : Please use the /MD switch for _AFXDLL builds Generating Code... Compiling... TSCtime.c Generating Code... Error executing cl.exe. Setting as Debug Multithreaded DLL Compiling... MFC_socket.cpp StdAfx.cpp Generating Code... Compiling... TSCtime.c Generating Code... Linking... LINK : warning LNK4098: defaultlib "MSVCRT" conflicts with use of other libs; use /NODEFAULTLIB:library MFC_socket.obj : error LNK2001: unresolved external symbol "unsigned __int64 basest" (?basest@@3_KA) MFC_socket.obj : error LNK2001: unresolved external symbol "unsigned __int64 tscfreq" (?tscfreq@@3_KA) MFC_socket.obj : error LNK2001: unresolved external symbol "unsigned __int64 basetsc" (?basetsc@@3_KA) MFC_socket.obj : error LNK2001: unresolved external symbol "void __cdecl recalibrate(void)" (?recalibrate@@YAXXZ) MFC_socket.obj : error LNK2001: unresolved external symbol "unsigned __int64 recalinterval" (?recalinterval@@3_KA) MFC_socket.obj : error LNK2001: unresolved external symbol "unsigned __int64 lastrecal" (?lastrecal@@3_KA) Debug/MFC_socket_try1_10Nov.exe : fatal error LNK1120: 6 unresolved externals Error executing link.exe. Re: Linking MFC code with non MFC code Mike Dimmick14-Dec-03 4:59 Mike Dimmick 14-Dec-03 4:59  Thought so. It appears to be an extern "C" problem. You either need to put an extern "C" block around the declarations of these variables and functions in the header (guarded with #ifdef __cplusplus), or you should compile the NTP code as C++ (using the /TP switch to the compiler). I generally prefer the first option, because legacy code in my experience tends to use the word new somewhere along the line... Out of interest, why does the NTP code only work when compiled with Debug Multithreaded? What errors do you get from setting Debug Multithreaded DLL? You can get problems with heap allocations and frees if allocations happen in one module and are freed in another. Re: Linking MFC code with non MFC code debsbunny715-Dec-03 4:18 debsbunny7 15-Dec-03 4:18  Thanks Mike. Second suggestion solved the immediate problem.

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