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Callback functions will138323-Apr-03 2:51 will1383 23-Apr-03 2:51  hi All, I have a class with functions and I'm calling into a dll with a function that specifies a callback function Here's the function I'm calling: extern "C" __declspec(dllexport) void stuffFunction(void (*UpdateCallback)(int iLoad)) And here's the class function I'm trying to pass in as a call back: void CSomeClass::UpdateCallback(int iLoad); I get the error: error C2664: 'someapp.c' : cannot convert parameter 1 from 'void (int)' to 'void (__cdecl *)(int)' If I declare the UpdateCallback to be a static function, it builds with no errors. I need to have access to the class members so I can't declare it as a static function. Any ideas? Thanks in advance! Re: Callback functions Rickard Andersson2023-Apr-03 2:57 Rickard Andersson20 23-Apr-03 2:57  What you are doing is illegal. You can't use a method as you do. You'll need to make it static. Non-static methods can only be accesed by an instance of the class. So, you need to make it static. Rickard Andersson8 Here is my card, contact me later! UIN: 50302279 E-Mail: nikado@pc.nu Interests: C++, ADO, SQL, Winsock, 0s and 1s Re: Callback functions will138323-Apr-03 3:00 will1383 23-Apr-03 3:00  That's what I thought I just wanted to be sure there were no other tricks out there I didn't know about. Thanks.. .... Just gotta do it another way =) Re: Callback functions Rickard Andersson2023-Apr-03 3:05 Rickard Andersson20 23-Apr-03 3:05  will1383 wrote: I just wanted to be sure there were no other tricks out there I didn't know about. Yeah! It's better being on the safe side! Rickard Andersson8 Here is my card, contact me later! UIN: 50302279 E-Mail: nikado@pc.nu Interests: C++, ADO, SQL, Winsock, 0s and 1s CArray and Memory Leaks Ricky_TheBard23-Apr-03 2:40 Ricky_TheBard 23-Apr-03 2:40  Hy People! I'm having some problems with memory leaks, maybe somebody can help me I have an CArray, full of objects with CStrings and when I finish my program lots of memory leaks of type strcore appears on the my debug. I try to put myvariableString.Empty(); on the destructor of that object, but doesn't solved The same happens to my CRichEdit control, I do a 'new' and create; on the destructor I do richedit->DestroyWindow() and delete richedit; But anyway, the following text appear: my.cpp: {701} client block at 0x002FA608, subtype 0, 64 bytes long. a CRichEditCtrl object at $002FA608, 64 bytes long Thanks everybody for the attention, cheers! Ricky Re: CArray and Memory Leaks Phil Hamer23-Apr-03 9:21 Phil Hamer 23-Apr-03 9:21  Empty() only makes the string the empty string (""). You have to call "delete" on anything you allocate with "new". Re: CArray and Memory Leaks David Crow23-Apr-03 10:34 David Crow 23-Apr-03 10:34  If you go to line 701 of MY.CPP, you'll see a new statement. Whenever the owner of the CArray object goes away, you'll need a corresponding delete statement. Shell open & working dir Paolo Vernazza23-Apr-03 1:57 Paolo Vernazza 23-Apr-03 1:57  I inserted in the registry (HKCR/myappdata/shell/open) the command line to open a file ("c:/programs dir/my app dir/myapp.exe" "%1") from the shell. Ok, it works, but the working dir is always "c:". I would like to tell Windows that when opening a file from the shell the working dir is "c:/programs dir/my app dir". A solution could be to write in the code SetCurrentDir(GetExeDirectory()), but doing so it would be impossible to use another working dir... Any suggestion? thanks Re: Shell open & working dir Rage23-Apr-03 4:00 Rage 23-Apr-03 4:00  In your app, in the initial Update, get the command line, parse for the .exe (or use the command line parser from CP, make a search about it), get the next string after the exe, here you have the path to your file. put a SetCurrentDir(str_commandline_file); You'ra done. ~RaGE(); Re: Shell open & working dir Paolo Vernazza23-Apr-03 4:32 Paolo Vernazza 23-Apr-03 4:32  I don't need the file path, I want that the working path is the same of the exe. But I can't encode that in the source code, I must say that to she shell... Re: Shell open & working dir Rage23-Apr-03 20:54 Rage 23-Apr-03 20:54  You caught me wrong. Assume the user, when installing your tool, put it in F:\Apps\Mytool\Tool.exe, and registers your associated files with extension .paolo. Then, he opens an explorer, doubleclicks on myfile.paolo which is in C:\CurrentFiles. So your command line, sent from the shell to the code, is : F:\Apps\Mytool\Tool.exe C:\CurrentFiles\myfile.paolo So now you can retrieve the exe path, and use SetDirectory() ~RaGE(); Re: Shell open & working dir Paolo Vernazza23-Apr-03 22:58 Paolo Vernazza 23-Apr-03 22:58  That could be a good solution, but I can't get the full command line... The variable m_lpCmdLine only contains "C:\CurrentFiles\myfile.paolo" without "F:\Apps\Mytool\Tool.exe" Re: Shell open & working dir Rage23-Apr-03 23:05 Rage 23-Apr-03 23:05  In InitInstance() : CString str=GetCommandLine(); In fact, m_lpCmdLine contains only the parameters. Check this in the MSDN for more info, i give you just the remark here : Remarks: ANSI console processes written in C can use the argc and argv arguments of the main function to access the command-line arguments. ANSI GUI applications can use the lpCmdLine parameter of the WinMain function to access the command-line string, excluding the program name. The reason that main and WinMain cannot return Unicode strings is that argc, argv, and lpCmdLine use the LPSTR data type for parameters, not the LPTSTR data type. The GetCommandLine function can be used to access Unicode strings, because it uses the LPTSTR data type. ~RaGE(); Re: Shell open & working dir Paolo Vernazza23-Apr-03 23:46 Paolo Vernazza 23-Apr-03 23:46  Thank you!!! It was so obvious, that I couldn't find it Re: Shell open & working dir David Crow23-Apr-03 8:11 David Crow 23-Apr-03 8:11  What you want cannot be done. When you associate a file-type with a program, you provide an absolute path to the EXE responsible for it. How else do you think Windows is going to know how to find it? You could, however, get away with just putting the name of the EXE in the registry, and then making sure the EXE can be found via the PATH environment variable. Sloppy, but do-able. Problem in deleting a specific record in an array in C++ grscot23-Apr-03 1:53 grscot 23-Apr-03 1:53  Hi everybody, How can I delete a specific record from an array in the Visual C++ environment? I have an array of object pointers. I want to enter a book title for example from the keyboard and then to have an option of deleting it, from the array. Is this possible? Regards, grscot Re: Problem in deleting a specific record in an array in C++ David Crow23-Apr-03 2:57 David Crow 23-Apr-03 2:57  First you would need to delete the block of memory that the array element is pointing to. Then you would need to delete the array element itself by moving all elements after the one to be deleted to the left. Let me see if a picture will help: -----------------<br /> |0|1|2|3|4|5|6|7|<br /> ----------------- If you wanted to remove element #4, elements 5, 6, and 7 would be moved to the left one time, like: -----------------<br /> |0|1|2|3|5|6|7| |<br /> ----------------- Now you have an empty spot where element #7 used to be. You can either free it up, or leave it so that when another element is added, the memory is already allocated. Re: Problem in deleting a specific record in an array in C++ Rickard Andersson2023-Apr-03 3:03 Rickard Andersson20 23-Apr-03 3:03  You have to iterate through the array and check the value if it is the same as what the user entered and then assign it NULL. Rickard Andersson8 Here is my card, contact me later! UIN: 50302279 E-Mail: nikado@pc.nu Interests: C++, ADO, SQL, Winsock, 0s and 1s Re: Problem in deleting a specific record in an array in C++ Cambalindo23-Apr-03 6:31 Cambalindo 23-Apr-03 6:31  Or you can use the MFC CArray wich is a template, that takes care of everything. #include "Afxtempl.h" CArray<myobj*,myobj&> arObj; arObj[n].RemoveAt(index);//it will remove the element and shift to the left there are plenty of method to do everything you need. cheers! Daniel Cespedes Daza "Santa Cruz de la Sierra Paraiso Terrenal!" daniel.cespedes@ieee.org Re: Problem in deleting a specific record in an array in C++ Cambalindo23-Apr-03 6:37 Cambalindo 23-Apr-03 6:37  Cambalindo wrote: CArray arObj; This is the correct way of declaring the array CArray<myObj*,myObj&> arObj; Daniel Cespedes Daza "Santa Cruz de la Sierra Paraiso Terrenal!" daniel.cespedes@ieee.org Want to find sample codes used to send E-Mail. George223-Apr-03 1:53 George2 23-Apr-03 1:53  Hi, everyone! I want to use VC++ to send an Email to someone. And my application is a console application. (command line based.) I have searched this site and find all the sample codes are written in ATL or COM. Well ... I know nothing about these topic. I simply want to know where can I find some simple samples which is written in plain VC++ and a seperate E-Mail sending class? Thanks in advance, George Re: Want to find sample codes used to send E-Mail. imsniper23-Apr-03 4:12 imsniper 23-Apr-03 4:12  Look for "CMapi" class it should exist in the codeproject,... if not.. www.google.com http://www.codeproject.com/internet/cmapi.asp the latest release.... http://www.naughter.com/cmapi.html Re: Want to find sample codes used to send E-Mail. George224-Apr-03 0:18 George2 24-Apr-03 0:18  Thanks, imsniper buddy! George updating a list control in a parent window si_6923-Apr-03 1:45 si_69 23-Apr-03 1:45  Hi i have a report style list control within a dialog the dialog is called from the Main frame, which is a list view when i click on ok my dialog i want to update the list view in the main frame with whats in my list view in my dialog any ideas ta si Re: updating a list control in a parent window Rage23-Apr-03 4:09 Rage 23-Apr-03 4:09  Override the CModal method of your CDialog and put a pointer to your listview as a parameter (CDialog::DoModal(stuff, CListView *pListView)) put a CListView *m_pListView; member variable in the CDialog class. In the DoModal, make m_pListView=pListView; member parameter of DoModal This will give you a pointer on your CListView within the CDialog. Override the CDialog::OnOK() method, and do your update BEFORE the call to CDialog::OnOK(); made in this function (otherwise you'll get your app to crash, since the memeber variables would have already been destroyed.) You're done. ~RaGE();

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