Where would I specify this directory in Visual C++ 6.0
Are you working in MFC, if yes then you can use the class wizard to generate the class based from OCX,TLB or DLL
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow Never mind - my own stupidity is the source of every "problem" - Mixture
<pre lang="text"> What is the basic difference in processing system messages in MFC? Should I use message map or WindowProc? In my included sample the WindowProc get executed first ( as expected ) , but I really do not do any message processing in this case. So my secondary question would be - what is considered by OS as processed message? </pre>
Never. MFC has an inbuilt message pump and MessageProc() handler which distributes the messages according to your MESSAGE_MAP entries. If you add your own MessageProc() then you break the connection between those entries and your message handlers.
One of these days I'm going to think of a really clever signature.
I would agree with NEVER... use message maps in MFC. If you find it doesn't do something specific that you needs, that's when you go around the framework, other than that... it's best to try to use the framework that's there.
Messages use WindowProcs, but MFC handles that for you. There's really very few cases where you'd have to go around what MFC already does. Only reason to code your own WindowProcs would really be if you're doing native Win32 coding.
Because WINVER is used in Windows.h and many other header files, it is set to the smallest supported value in Windows.h if not already defined.
It is a definition that decides which API functions and structures can be used. Which compiler is used does not care. But to use features introduced with newer Windows versions, you must use newer include files from a newer Windows SDK.
Jochen, thanks again for your input. I was just puzzled that the WINVER is defined in Windows.h only if it is not already defined elsewhere. But there is nothing wrong with that and it was a good learning experience for me. I think the main "problem" is that I get involved with coding and assume that the supporting headers are there or are OK. With all the new IDE's I wish the people who post code here would point out which OS / SP / SDK is required for the code to even compile. But than one would not learn anything from "mistakes", tough call. Vaclav
The problem is that you are using an ancient development environment. I have not used VC 6 since many years. At work I'm still using the also outdated Visual Studio 2003 because we need to support Win98 and 2K for some machine control systems.
In 2012 there is no more support for Windows 9x, NT4, and 2000. So there is no need to use old dev software and most here assume that you are using a newer version (VS 2008 or later). In fact you should use a newer version when writing programs for actual Windows versions. Especially VC 6 is too old. With VS 2003 and updated SDKs, I'm at least able to write code for Windows 7.
It is common practice that the actually oldest supported Windows versions is the min. requirement. With your VC 6 version that was Windows 95. For Microsoft and the people here it is actually Windows XP. When reading articles here, just have a look at the publishing date to guess what is supported. Many articles also have a note about the requirements.
I know now that you are using VC 6. For future questions, it may be helpful to add a note that you are using VC 6 so that others are prepared.
"I know now that you are using VC 6. For future questions, it may be helpful to add a note that you are using VC 6 so that others are prepared."
I have stopped telling people that I am using VC6.0 because they would limit their replies / help to "upgrade to xxxxx". This is my hobbby now and as retired OF I am reluctant to spent $ every year ( it seems that way) on NEW VS 20xx. ( MFC is not free with VS !) Most of the time I can accomplish what I want with VC6.0, but as you noted not always, and than I look prety stupid with my basic questions. Personally , I do not care if MS stops supporting their stuff right know. I get very uncomfortable when my XP gets automatically patched without any explanations why!) Even when I was programming proffesionaly I have NEVER used MS support and do not care for it, as you can see I rather look foolish here with my basic questions than pay MS.
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