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Using the Registry with MFC.

Posted on 1998-06-04
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Last Modified: 2013-11-19
I want to write my program's setup information into the registry.. for example, I want to add this to HKEY_CURRENT_USER

MyCompanyName\MyProgramsName\Version\<several keys with info>

what do I need to do to make the different directories and then the keys ??
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Question by:VisualLR
8 Comments
 
LVL 23

Expert Comment

by:chensu
ID: 1316037
Call CWinApp::SetRegistryKey(MyCompanyName) in the CWinApp::InitInstance.

CWinApp::SetRegistryKey
void SetRegistryKey( LPCTSTR lpszRegistryKey );

void SetRegistryKey( UINT nIDRegistryKey );

Parameters

lpszRegistryKey   Pointer to a string containing the name of the key.

nIDRegistryKey   ID/index of a key in the registry.

Remarks

Causes application settings to be stored in the registry instead of INI files. This function sets m_pszRegistryKey, which is then used by the GetProfileInt, GetProfileString, WriteProfileInt, and WriteProfileString member functions of CWinApp. If this function has been called, the list of most recently-used (MRU) files is also stored in the registry. The registry key is usually the name of a company. It is stored in a key of the following form: HKEY_CURRENT_USER\Software\<company name>\<application name>\<section name>\<value name>.

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Author Comment

by:VisualLR
ID: 1316038
I had already read that in the MSVC documentation. I turned to this site because it wasn't clear enough for me.
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LVL 23

Expert Comment

by:chensu
ID: 1316039
So, which is not clear for you?
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Author Comment

by:VisualLR
ID: 1316040
well, how do I make the different directories?? if you could give me a short example it would be great. Cause Ive tried and I havent been able to do it... thanks.
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LVL 1

Expert Comment

by:Andy_Keys
ID: 1316041
I found that using the void SetRegistryKey(LPCTSTR szRegistryKey ); too limiting, Look at using the std
RegCreateKeyEx fn. By passing a path with \ int the string for the 2nd parameter you can use it like a directory. ie. if you pass in <zzzz>\<xxx> you create key <zzzz> and it has a child/sub key of (xxxx). Once this key is created you can the
RegSetValueEx fn to set data values.  If you want some examples reply let me know


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Accepted Solution

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chensu earned 400 total points
ID: 1316042
BOOL CMyApp::InitInstance()
{
    ...
    this->SetRegistryKey(_T("MyCompanyName"));
    ...
}


CWinApp *pApp = ::AfxGetApp();
pApp->WriteProfileString(_T("Version"), _T("Author"), _T("VisualLR"));

This will create the subkey "Version" and its value name is "Author" and its value data is "VisualLR".

Run Registry Editor to see it.
0
 

Expert Comment

by:mmachie
ID: 1316043
checkout www.codeguru.com  there is a registry class you can use that wraps the api calls.
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Author Comment

by:VisualLR
ID: 1316044
Thanks! With you example I was able to make it. Thanks a lot.
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