C / C++ / MFC

FirstPrevNext

Re: command prompt Snyp10-Dec-03 12:33 Snyp 10-Dec-03 12:33  I forgot some ways of actually doing this but I think the best and easiest way would be 'system("cls");', right know I also am doing alot of console programming, I was wondering, are you familiar with the STL library? Re: command prompt Gary R. Wheeler10-Dec-03 15:07 Gary R. Wheeler 10-Dec-03 15:07  Try searching in the MSDN for the API function AllocConsole. The console functions let you do this sort of thing. Software Zen: delete this; Re: command prompt Fareed Rizkalla10-Dec-03 18:57 Fareed Rizkalla 10-Dec-03 18:57  sorry, i have no msdn, does anyone have any other solution, and the system call doesn't seem to work Re: command prompt Jon Sagara10-Dec-03 21:20 Jon Sagara 10-Dec-03 21:20  http://msdn.microsoft.com/library/default.asp[^] Jon Sagara Vegetarianism is unhealthy. Humans need protein, and lots of it. Put down those sprouts and pick up a T-bone! -- Michael Moore Latest Article: Breadcrumbs in ASP.NET link error on .def files Anonymous10-Dec-03 10:24 Anonymous 10-Dec-03 10:24  Hi, I'm trying to create a dll, but I get an LNK2001 error at a line on my .def file. Why does this happen? I thought .def prevented this. Thanks. Re: link error on .def files David Crow10-Dec-03 10:33 David Crow 10-Dec-03 10:33  Anonymous wrote: ...I get an LNK2001 error at a line on my .def file And that line would be? Anonymous wrote: Why does this happen? Have you looked here? Five birds are sitting on a fence. Three of them decide to fly off. How many are left? Re: link error on .def files Jörgen Sigvardsson10-Dec-03 11:19 Jörgen Sigvardsson 10-Dec-03 11:19  Are you exporting something which doesn't exist? -- 20 eyes in my head, they're all the same![^] Make file Anonymous10-Dec-03 10:15 Anonymous 10-Dec-03 10:15  Hi, I'm trying trying to re-compile some source code. The code was written in VC++. However, the writer only included the .h, .c, and a file called makefile. Hence, I'm having trouble re-compiling becuase I don't know the proper settings for the project. I get a lot of LNK2001 errors. I went through the "makefile" and it looks more like the type used on UNIX. Could someone tell me what it is? It's NOT a .mak file. Can I use it to set my project settings? # Nmake macros for building Windows 32-Bit apps !include <ntwin32.mak> # If the rpc include directory is not included in the standard path # you have to give the path to it here. RPCINCLUDEPATH = .. # If the rpc library is not included in the standard lib path # you have to give the path to it here. RPCLIBPATH = ..\bin\\ DEFINITION = ONCRPC.DEF OBJS = CLNT_RAW.OBJ \ XDR.OBJ \ CLNT_TCP.OBJ \ CLNT_UDP.OBJ \ PMAP_RMT.OBJ \ RPC_PROT.OBJ \ SVC_AUTU.OBJ \ SVC_AUTH.OBJ \ SVC_RAW.OBJ \ SVC_RUN.OBJ \ SVC_TCP.OBJ \ SVC_UDP.OBJ \ XDR_MEM.OBJ \ XDR_REC.OBJ \ AUTH_NON.OBJ \ AUTH_UNI.OBJ \ AUTHUNIX.OBJ \ BINDRESV.OBJ \ CLNT_GEN.OBJ \ CLNT_PER.OBJ \ CLNT_SIM.OBJ \ GET_MYAD.OBJ \ GETRPCEN.OBJ \ GETRPCPO.OBJ \ PMAP_CLN.OBJ \ PMAP_GET.OBJ \ PMAP_GMA.OBJ \ PMAP_PRO.OBJ \ PMAP_PR.OBJ \ RPC_CALL.OBJ \ RPC_COMM.OBJ \ SVC_SIMP.OBJ \ XDR_ARRA.OBJ \ XDR_FLOA.OBJ \ XDR_REFE.OBJ \ XDR_STDI.OBJ \ SVC.OBJ \ BCOPY.OBJ \ NT.OBJ all: oncrpc.dll portmap.exe clean: del $(OBJS) oncrpc.lib oncrpc.dll oncrpc.exp portmap.obj portmap.exe ..\rpcgen\oncrpc.dll portmap.exe: oncrpc.lib portmap.obj $(link) $(conlflags) $(ldebug) -out:portmap.exe PORTMAP.obj $(RPCLIBPATH)oncrpc.lib $(conlibsdll) wsock32.lib copy portmap.exe ..\bin\pm_ascii.exe oncrpc.lib: $(OBJS) oncrpc.def $(implib) /out:oncrpc.lib /def:$(DEFINITION) $(OBJS) oncrpc.dll: $(OBJS) oncrpc.lib oncrpc.exp $(link) /DLL /out:oncrpc.dll -entry:_DllMainCRTStartup$(DLLENTRY) $(ldebug) oncrpc.exp $(OBJS) $(conlibsdll) wsock32.lib advapi32.lib copy oncrpc.lib ..\bin copy oncrpc.dll ..\bin copy oncrpc.dll ..\rpcgen .c.obj: $(cc) /I$(RPCINCLUDEPATH) /DONCRPCDLL $(cdebug) $(cflags) $(cvarsdll) $*.c Re: Make file David Crow10-Dec-03 10:27 David Crow 10-Dec-03 10:27  Can you not just import makefile into a new VC++ project? Five birds are sitting on a fence. Three of them decide to fly off. How many are left? inconsistent dll linkage dllexport assumed Anonymous10-Dec-03 7:37 Anonymous 10-Dec-03 7:37  Is anyone familar with warning C4273? I get this while compiling a static library. When I try to compile an app which uses the lib, I get a link error. I assume the warning and the error are related. Thanks. Re: inconsistent dll linkage dllexport assumed David Crow10-Dec-03 7:49 David Crow 10-Dec-03 7:49  Per MSDN: The specified member function was declared in a class with dllexport linkage, and then was imported. This warning can also be caused by declaring a member function in a class with dllimport linkage as neither imported nor static nor inline. The function was compiled as dllexport. Does any of this apply to your situation? Five birds are sitting on a fence. Three of them decide to fly off. How many are left? Re: inconsistent dll linkage dllexport assumed Anonymous10-Dec-03 7:58 Anonymous 10-Dec-03 7:58  The library was written in native C. I think my problem has to do with the .def file. Not sure. .def files Anonymous10-Dec-03 7:23 Anonymous 10-Dec-03 7:23  How does one include a pre-made ".def" file into a project? I tried to drag and drop into the source files section but this does not seem right. Is it set in the projects setting? Re: .def files David Crow10-Dec-03 7:45 David Crow 10-Dec-03 7:45  Anytime I add a file to a project, I use the Project/Add to Project/Files menu option. That said, I'm not sure the linker would automatically know to use a .DEF file. Five birds are sitting on a fence. Three of them decide to fly off. How many are left? Re: .def files Anonymous10-Dec-03 8:01 Anonymous 10-Dec-03 8:01  Simply adding the file does not do it. The Project folders setting needs to be changed. However, I can't seem to edit the inputs. Re: .def files David Crow10-Dec-03 8:12 David Crow 10-Dec-03 8:12  I did not find a setting in the Project Settings dialog box, Link tab, for the /DEF linker switch. Perhaps you'll need to modify the .DSP or .MAK file manually to add it. Five birds are sitting on a fence. Three of them decide to fly off. How many are left? Pointer to another Window tjkrz10-Dec-03 7:00 tjkrz 10-Dec-03 7:00  Within my program, I want to bring a window to another program to the foreground. I'm doing the following: CWnd *pFV;<br /> <br /> pFV = CWnd::FindWindow(NULL, _T("Another Program Title")); Then if FindWindow was successful, I call pFV->SetForegroundWindow() to bring it to the front. This works great in most cases, but it sometimes fails... The program I'm referencing changes its name in the titlebar depending on which options are selected. I don't have the source to the program, so I can't modify it. How can I get a pointer to this window without knowing what the title is going to be? Is there a way to link to the process name? I also know that the first x characters in the title will always be the same. Is there some way to search through all the titles of open windows to do a comparison? Any help would be greatly appreciated. Thanks. Todd Krzeminski tkrzeminski@nlxcorp.com Re: Pointer to another Window Antti Keskinen10-Dec-03 7:46 Antti Keskinen 10-Dec-03 7:46  The most efficient method here would be to use Microsoft Spy++ to find out the class name of the window, then use FindWindow on the class name instead of window caption. Just start Spy++, start the target program, and detect it's class name. If you do not know how to use Spy++, refer to it's help files, they are very throughout. -Antti Keskinen ---------------------------------------------- The definition of impossible is strictly dependant on what we think is possible. Re: Pointer to another Window tjkrz10-Dec-03 8:44 tjkrz 10-Dec-03 8:44  I tried that, but for the class name I get an long string (Afx:4000...) that seems to vary each time I run it. Am I doing something wrong? Thanks, Todd Krzeminski tkrzeminski@nlxcorp.com Re: Pointer to another Window Antti Keskinen11-Dec-03 7:10 Antti Keskinen 11-Dec-03 7:10  This type of class name means that the program uses MFC to register a new class for itself always when it is run. This means that the class name of the window is not an usable option. The other poster suggested using window enumeration callback routine. I find this the best alternative as well. Just get the caption of each window and compare X characters of it to see if there is a match. I remember you saying that certain characters of the window title always remain constant, so this would sound like the best course of action. -Antti Keskinen ---------------------------------------------- The definition of impossible is strictly dependant on what we think is possible. Re: Pointer to another Window David Crow10-Dec-03 7:47 David Crow 10-Dec-03 7:47  tjkrz wrote: How can I get a pointer to this window without knowing what the title is going to be? How about the window's class name? Five birds are sitting on a fence. Three of them decide to fly off. How many are left? Re: Pointer to another Window Joel Lucsy11-Dec-03 4:08 Joel Lucsy 11-Dec-03 4:08  If you can't use the class name, then the best alternative is to use EnumWindows. This will call a function you provide. With each callback you get will need to retrieve the titlebar text and do your own matching. Once you've found the window you can return FALSE to stop the enumeration early. Hope that helps. -- Joel Lucsy Re: Pointer to another Window tjkrz15-Dec-03 9:21 tjkrz 15-Dec-03 9:21  Thanks, I got it working with EnumWindows. template design question pankajdaga10-Dec-03 6:30 pankajdaga 10-Dec-03 6:30  Hi everyone, I got myself a copy of Andrei Alexandrescu's Modern C++ Design after hearing a lot of good things about it. The book is on the heavy side though. I never used templates much before, but this book seems to open new vistas for great design. I read the first chapter last night and was thinking about it the whole day. The topic of discussion being policy classes. Everything seemed fine, but I cannot understand one point: He states that [B]Make the destructors of the policy classes protected and non-virtual[/B] However, will this not lead to problems if someone instantiates a derived class through a base class: Here is a small example, I am sure you guys have seen this millions of times. I, however, am a novice. So please advice: Here is a small pseudo policy and a derived class: <code> template <class T> class SuperBase { public: virtual void OpenSource() { std::cout << "In superbase opensource" << std::endl; } }; template <class T> class MyDataSource: public SuperBase<T> { public: MyDataSource() { some = new T; } void OpenSource() { std::cout << "In mydatasource open source" << std::endl; } private: T * some; protected: ~MyDataSource() { std::cout << "In destructor of my source" << std::endl; delete some; } }; Now, in my main program if I do this: SuperBase<int> * temp = new MyDataSource<int>; temp->OpenSource(); delete temp; </code> This will of course never call the destructor of MyDataSource. Am I missing a design detail here. Are these templated classes never supposed to be derived from. How can I make sure such heritance is safe (in keeping with the design principle here). Thanks a bunch. Xargon Without struggle, there is no progress Re: template design question Jörgen Sigvardsson10-Dec-03 11:34 Jörgen Sigvardsson 10-Dec-03 11:34  Well, a golden rule in C++ is that if you have a virtual method in a class, you should also add a virtual destructor. If you've made one method virtual then you have implied that the class may be inherited. And if that's the case, anything but a virtual destructor would be bad design as it will most likely leak. I think you should add a virtual destructor in the SuperBase class. That will make sure the MyDataSource<T> destructor is called (since MyDataSource<T> inherits from SuperBase). I haven't read (unfortunately) this book you mention yet, so I'm not really 100% about the terminology. But is this really how a policy class is supposed to work? I thought policy classes were something along the lines of traits in C++ which are mostly static classes relying mainly on type and method names. -- 20 eyes in my head, they're all the same![^]

Last Visit: 31-Dec-99 18:00     Last Update: 21-Sep-24 18:43 Refresh ᐊ Prev1...13886138871388813889138901389113892138931389413895 Next ᐅ

General    News    Suggestion    Question    Bug    Answer    Joke    Praise    Rant    Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.