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Posted 29 Jun 2000

User-settings class for ATL/WTL projects

, 3 Apr 2001
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A helper class for storing user settings in the Registry, similar to MFC's CWinApp
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User-settings class for ATL/WTL Projects

WTL is a great framework for putting together small, lightweight applications, but I miss some of the helpful features of MFC. One of these is the ability to save user settings in the registry. So I made this class to save me the hassle of calling the registry API by hand. All you need to do is derive your main user-interface class (either your frame window or view) from CAppSettings, like so:

class CMainFrame : public CAppSettings, CFrameWindowImpl<CMainFrame>, ...

After that, one call to specify the name of the key your settings will be stored under and you're away. You can set and retrieve strings, DWORDs and structs, and they can be stored under HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER. In either case, your settings will be stored in a subkey of Software.


Use this function to specify the root key for your settings. Typically you will want to use something like "companyname\\appname".

  • void SetRegKey(LPCTSTR lpszKey)

Use these functions for storing values in the registry. Replace XXX with "Machine" or "User", depending on whether you want them stored under HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER. In each of the functions below, lpszSection is the name of a further subkey which will be added to the string you specified in SetRegKey. So the entire key path will look like this:

[HKLM / HKCU]\Software\keyname\section

  • BOOL WriteXXXProfileDword(LPCTSTR lpszSection, LPCTSTR lpszEntry, DWORD dwVal)
  • BOOL WriteXXXProfileString(LPCTSTR lpszSection, LPCTSTR lpszEntry, LPCTSTR lpszVal)
  • template <class T> BOOL WriteXXXProfileStruct(LPCTSTR lpszSection, LPCTSTR lpszEntry, T& obj)

Use these functions to retrieve a value from the registry, or a default value if it isn't there. The function to store a user-defined struct cannot retrieve a default value, and only returns TRUE or FALSE to indicate whether or not the call succeeded.

  • DWORD GetXXXProfileDword(LPCTSTR lpszSection, LPCTSTR lpszEntry, DWORD dwDefault = 0)
  • CString GetXXXProfileString(LPCTSTR lpszSection, LPCTSTR lpszEntry, LPCTSTR lpszDefault = NULL)
  • template <class T> BOOL GetXXXProfileStruct(LPCTSTR lpszSection, LPCTSTR lpszEntry, T& obj)

That's it! I hope you find it useful.


This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

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About the Author

Peter Kenyon
Web Developer
New Zealand New Zealand
No Biography provided

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Comments and Discussions

GeneralUpdated for VC++ .NET Pin
negotiator22-Jun-03 20:50
membernegotiator22-Jun-03 20:50 
GeneralRe: Updated for VC++ .NET Pin
Rob Staveley7-May-04 3:14
memberRob Staveley7-May-04 3:14 
GeneralMFC Pin
Anonymous2-Oct-01 1:27
memberAnonymous2-Oct-01 1:27 
GeneralOoouuuccchhh Pin
Tomaz Stih5-Mar-01 0:33
memberTomaz Stih5-Mar-01 0:33 
GeneralRe: Ooouuuccchhh - damn parser ate most important characters Pin
Tomaz Stih5-Mar-01 0:36
memberTomaz Stih5-Mar-01 0:36 
GeneralRe: Ooouuuccchhh Pin
Peter Kenyon5-Mar-01 12:57
memberPeter Kenyon5-Mar-01 12:57 
GeneralRe: Ooouuuccchhh Pin
Tomaz Stih6-Mar-01 0:52
memberTomaz Stih6-Mar-01 0:52 
GeneralRe: Ooouuuccchhh Pin
Peter Kenyon6-Mar-01 12:51
memberPeter Kenyon6-Mar-01 12:51 
QuestionArchaic? Pin
dbj22-Aug-00 11:03
sussdbj22-Aug-00 11:03 
AnswerRe: Archaic? Pin
Peter31-Aug-00 20:11
sussPeter31-Aug-00 20:11 
AnswerRe: Archaic? Pin
aaa28-Oct-00 11:54
sussaaa28-Oct-00 11:54 
Huh? Are you for real? 1. WSH - Disabled on many machines because of its recent infamy regarding the Melissa/I Love You viruses. Secondly, "make available to everything everywhere and anytime. And any language" - Last time I checked, WSH stood for WINDOWS scripting host... Where's the Mac/Linux port of WSH? 2. JavaScript - An interpreted language that is probably 100 times slower than C++...

Dude, your "recipe" is a recipe for disaster... You don't do much professional coding, do you? I'd love to see the faces of my clients if you proposed a WSH/JavaScript solution to them... Heh heh
GeneralHas a dependency on CString Pin
Peter Kenyon6-Jul-00 21:02
sussPeter Kenyon6-Jul-00 21:02 

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