how to use ReadPrivateProfileString.

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I need to save some data from a dialog like height and width but i don't know to how to do it using ReadPrivateProfileString and writePrivateProfileString.

can i get any example regarding this or any article how to save the settings in INI file.

Regards,
Uday.

Posted 9-May-13 0:00am

P Uday kishore

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CPallini · Answer 1 · 2013-05-09T00:15:00

Solution 1

You may find many articles about, here at CodeProject[^]

Posted 9-May-13 0:15am

CPallini

Ian A Davidson · Answer 2 · 2013-05-09T00:31:00

Solution 2

Hi Uday,
First of all, as far as I'm aware there is no such function as ~~ReadPrivateProfileString~~. The function is GetPrivateProfileString.

Secondly, both that function and WritePrivateProfileString, as MSDN says, are "provided only for compatibility with 16-bit Windows-based applications." I cannot believe you are developing for 16-bit, so you should not be using these functions!

As MSDN says, "Applications should store initialization information in the registry."
Read about RegSetValueEx and RegGetValue.

Alternatively, use an XML file like C# config files use (although, granted, that would be more work in C++).

Regards,
Ian.

Posted 9-May-13 0:31am

Ian A Davidson

Updated 9-May-13 0:38am

v2

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P Uday kishore 9-May-13 7:05am

so is there any other way to work with.requirement is to use INI file.do u have any idea how to create that using mfc/c++???

Ian A Davidson 9-May-13 7:46am

Take a look here:

http://stackoverflow.com/questions/4279532/methods-of-storing-application-data-settings-without-the-registry

There's a link there that points to an interesting looking project on CodeProject itself:

http://www.codeproject.com/Articles/12914/INI-Reader-Writer-Class-for-MFC-and-ANSI-C-Windows

I may have been a bit hasty in saying that you should not ever use those functions (as someone on that first forum page points out, the functions will probably never disappear). However, it is clear that even if using ini files through those functions, there is some interaction with the registry (it seems they look in the registry first!) therefore they can't be the most efficient. You are better off either using the registry directly as suggested, or writing the file youself.

If it really must be an "INI" format file, then perhaps try looking that CIniFile, linked above. However, if it is simply a case of needing to save a couple of values in some sort of initialisation file which needs to be modifiable by a user, then you could simply write them as a couple of values in a plain text file (and give it a generic extension, such as ".dat"), or define your own format, or use a well structured and documented specification like XML.

Regards,
Ian.

P Uday kishore 9-May-13 8:35am

as normal text file i tried but they need the format like sections and keys so am thinking to move on to that way of design.that's y