C / C++ / MFC

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Re: adding ATL to MFC project Christian Graus10-Oct-01 1:21 Christian Graus 10-Oct-01 1:21  Sorry, but it's clear you don't know enough about COM in order to write a COM dll. Adding ATL support allows you to write ATL code, it does not link everything up magically for your dll to become a COM object. IDispatch is an interface derived from IUnknown, which is the base interface for all COM objects. IDispatch is the interface for automation objects ( those visible to VB, etc ). IDL is the language use to define interfaces ( that's what the I stands for ), and you can't convert MFC to IDL, they are different beasts. Again, you're in real trouble if you need to achieve this in a hurry, you cleary do not have the skills you need. I recommend you buy some books on ATL. I don't know that much about it myself, but you clearly are hoping for a magic bullet, and you aren't going to find it in the solution you're looking for, sorry. Christian As I learn the innermost secrets of the around me, they reward me in many ways to keep quiet. Men with pierced ears are better prepared for marriage. They've experienced pain and bought Jewellery. Re: adding ATL to MFC project Bill Wilson10-Oct-01 11:40 Bill Wilson 10-Oct-01 11:40  What you need in your dll are COM interfaces. These will allow you to access the controls methods and properties from other applications. The best way to do this using MFC is to start with a different project type, MFC ActiveX control. Otherwise use Class Wizard to add automation interfaces. Go to the Automation tab. Choose Add Class, create your class and click the Automation radio button. This will add, not only a new class, but an interface. When you look in Class View, you will see CMyNewClass and IMyNewClass. Thanks for the help, Bill CListCtrl::SetBkImage work?? 9-Oct-01 21:29 9-Oct-01 21:29  Can someone tell me how to get CListCtrl::SetBkImage() to 'actually' work??? I've been messing with it for quite a few hours and just can't seem to get it to work. TIA Kevin Power, Jr. Re: CListCtrl::SetBkImage work?? Tomasz Sowinski9-Oct-01 23:54 Tomasz Sowinski 9-Oct-01 23:54  Did you call CoInitialize or OleInitialize in your app? Tomasz Sowinski -- http://www.shooltz.com CListCtrl::SetBkImage work?? Kevin Power9-Oct-01 21:29 Kevin Power 9-Oct-01 21:29  Can someone tell me how to get CListCtrl::SetBkImage() to 'actually' work??? I've been messing with it for quite a few hours and just can't seem to get it to work. TIA Kevin Power, Jr. How did they do this? foobat9-Oct-01 21:07 foobat 9-Oct-01 21:07  Hi everyone, I was wondering if anyone could tell me how i would go about implementing a Napster / Scour Exchange like interface for my app. The app isnt a file sharing program, i just need to know the best way to have multiple panes of information that can be activated using a button. I think napster used some sort of embedded property sheets or something. The app needs to be resizable. ie look like a normal SDI/MDI prog and each view will be a listview or a html view or something else. What i'm really aiming for is something like the Scour Exchange client which had an Outlook like toolbar down the side and each icon in the toolbar would activate a different view on the right hand pane. Thanks for any help! Ash Re: How did they do this? Michael Dunn10-Oct-01 8:49 Michael Dunn 10-Oct-01 8:49  Napster actually uses a tab contol, but with the styles set so that the control shows buttons instead of tabs. --Mike-- http://home.inreach.com/mdunn/ "The Earth is doomed." -- Rupert Giles your with and What does SDK really stand for yccheok9-Oct-01 21:00 yccheok 9-Oct-01 21:00  It is quite shame for me but here is my problem. I had been using SDK for some time. However, I am still quite confuse on what does SDK(software development kit) stand for. ie: 1. what library package should belongs to SDK? 2. does windows.h and stdio.h belongs to SDK? thanks a lot. Re: What does SDK really stand for Christian Graus9-Oct-01 21:03 Christian Graus 9-Oct-01 21:03  No wonder you're confused - you've confused me... SDK stands for software development kit. Lots of people release SDK's, for example Flash has one. You're talking about the Windows SDK I presume - how do you mean belongs to the SDK ? Everything the SDK installs 'belongs' to it. Do you mean .lib files ? I'm lost. Christian As I learn the innermost secrets of the around me, they reward me in many ways to keep quiet. Men with pierced ears are better prepared for marriage. They've experienced pain and bought Jewellery. Re: What does SDK really stand for yccheok9-Oct-01 21:09 yccheok 9-Oct-01 21:09  I am using microsoft visual c++. I am confusing since from the documentation in msdn cd, they place the function like MessageBox() under SDK catagory while printf() under another category. Re: What does SDK really stand for Christian Graus9-Oct-01 21:25 Christian Graus 9-Oct-01 21:25  Ah... Unlike C# or Visual Basic, C++ is a language that exists on multiple platforms. It was written by Bjarne Stroustrup, and if you program C++, you should own his books. printf is part of the C++ standard, and so is applicable to all implimentations of C++. MessageBox() is specific to Windows - a system running C++ code needn't even have a display, let alone a GUI, and only output of text is supported in the standard. So the differentiation you notice is between M$ specific code and code generic to the underlying language. Christian As I learn the innermost secrets of the around me, they reward me in many ways to keep quiet. Men with pierced ears are better prepared for marriage. They've experienced pain and bought Jewellery. Re: What does SDK really stand for Erik G. Poel10-Oct-01 1:18 Erik G. Poel 10-Oct-01 1:18  Actually printf() is part of the C standard RTL. Re: What does SDK really stand for Christian Graus10-Oct-01 1:21 Christian Graus 10-Oct-01 1:21  Quite possibly I've never done any straight C, so I really have only vague ideas what is C and what is C++. Christian As I learn the innermost secrets of the around me, they reward me in many ways to keep quiet. Men with pierced ears are better prepared for marriage. They've experienced pain and bought Jewellery. Re: What does SDK really stand for Tim Smith10-Oct-01 1:47 Tim Smith 10-Oct-01 1:47  I've never done any straight... There is a joke in there somewhere... Tim Smith Descartes Systems Sciences, Inc. how can I do? zhangyifei9-Oct-01 20:56 zhangyifei 9-Oct-01 20:56  how can i add a version number to the CDocument class? ZHANGYIFEI Re: how can I do? Christian Graus9-Oct-01 21:00 Christian Graus 9-Oct-01 21:00  Do you want to add to CDocument, or your CDocument derived class ? Why ? Christian As I learn the innermost secrets of the around me, they reward me in many ways to keep quiet. Men with pierced ears are better prepared for marriage. They've experienced pain and bought Jewellery. Re: how can I do? zhangyifei9-Oct-01 23:57 zhangyifei 9-Oct-01 23:57  i want to add to CDocument not the derived class! I WANT DO THIS !THANK YOU! ZHANGYIFEI Re: how can I do? Christian Graus10-Oct-01 1:11 Christian Graus 10-Oct-01 1:11  Sorry, you can't. MFC is in a dll and is used by all sorts of other programs. You can't change the implimentation to suit you, you'll need to derive from it. Maybe if you said what you're trying to do, I could offer more of a suggestion. Christian As I learn the innermost secrets of the around me, they reward me in many ways to keep quiet. Men with pierced ears are better prepared for marriage. They've experienced pain and bought Jewellery. Interfacing with other S/W 9-Oct-01 20:52 9-Oct-01 20:52  Hi, In my project,I have to make a custom software that should be able to interface with other standard s/w in the market for some calculations.How can I do this because I donot know the functions used in that s/w? I may have to interface with Mathlab. Please help me.If the solution is lengthy ,would you mind mailing to jumvmk@yahoo.com. Thanx. Re: Interfacing with other S/W Christian Graus9-Oct-01 21:05 Christian Graus 9-Oct-01 21:05  How/why do you want to interface with other software ? What software ? Some software, like Office, exposes interfaces through COM, others may not be written to allow your participation and will therefore only be possibly on a limited basis, and based on your code invading the progam involved. Christian As I learn the innermost secrets of the around me, they reward me in many ways to keep quiet. Men with pierced ears are better prepared for marriage. They've experienced pain and bought Jewellery. Re: Interfacing with other S/W markkuk9-Oct-01 23:15 markkuk 9-Oct-01 23:15  The solution depends on the software you need to use. In case of Matlab, see the Matlab external interface documentation, under the headings "Calling Matlab from C and Fortran programs" and "ActiveX and DDE support". Can not access serial port on Win2k KMilind9-Oct-01 20:46 KMilind 9-Oct-01 20:46  I have a class which handles serial port communication. It works fine on windows 95 and windows 98 but it fails on Windows 2000. Actually there is a worker thread which reads data from serial port and sends the message to the main thread when data is available. Under windows 2000 ReadFile and WriteFile functions does not return and program stucks up there. Re: Can not access serial port on Win2k Tim Smith10-Oct-01 1:50 Tim Smith 10-Oct-01 1:50  Well, without more information I can't tell you what is wrong, but I do know ReadFile and WriteFile work just fine on W2k without hanging the program. Are you using SetCommTimeouts? Are you using Overlapped reads and writes? Tim Smith Descartes Systems Sciences, Inc. Re: Can not access serial port on Win2k KMilind10-Oct-01 18:13 KMilind 10-Oct-01 18:13  Yes, I am using SetCommTimeouts, but overlapped I/O is not used. Program is vary simple. Port is opened using CreateFile as follows m_hComm = CreateFile(sPort, GENERIC_READ |GENERIC_WRITE, 0, NULL, OPEN_EXISTING, bOverlapped ? FILE_FLAG_OVERLAPPED: 0, NULL); then comm timeouts are set as follows memset(&m_commtimeouts, 0, sizeof(COMMTIMEOUTS)); m_commtimeouts.ReadIntervalTimeout += 2; if(parity != NoParity) m_commtimeouts.ReadIntervalTimeout++; if(stopbits != OneStopBit) m_commtimeouts.ReadIntervalTimeout++; m_commtimeouts.ReadIntervalTimeout++; m_commtimeouts.ReadIntervalTimeout += byDataBits; m_commtimeouts.ReadIntervalTimeout *= (int)ceil(1.0 / (double)dwBaud); SetCommTimeout(m_hComm, &m_commtimeouts); file locking problem... l a u r e n9-Oct-01 20:31 l a u r e n 9-Oct-01 20:31  hey anybody got any ideas as to why the following should be the case: on a windows nt ws machine with a windows nt svr we use a simple server side file lock to prevent multiple accesses to the same data on the server (ie, the ws checks for a locked file before accessing data on the server) ... this works fine same scenario but with a win2k client the file lock doesn't seem to show up puzzled me and i wondered if anyone a) knows what i'm on about and b) has a clue as to why it should be so --- "every year we invent better idiot proof systems and every year they invent better idiots ... and the linux zealots still aren't being sterilized"

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