On Thursday 06 May 2004 19:46, Mark K. Kim wrote:
>Probably the best thing to do under Windows is to use the registry, which
>requires registry key access. Currently, there's no way to access the
>keys using only SDL, and MingW doesn't allow registry access either (not
>without extra libraries), so the only other option left is Visual C/C++,
>which I think is the cleanest option without the clunky extra libraries.
>
This sounds right to me. Not sure what registry keys to use for all users,
though.
>So assuming Visual C/C++ is the way, I'm not sure if this can be done with
>the free compiler on Microsoft's website, and whether the license allows
>for open source software to use it (I tried reading it and it's ambiguous
>enough for me to avoid using it). If anyone has information on those
>topics, please share!
>
The registry is accessed using Win32 functions.
Here is some code I have used in the past to create an application directory
in a location that should exist, and be writable, on all versions of Windows
(95/98/ME/2K/XP)
HRESULT ReadRegistry( const char *key, const char *option, char *value, int
size )
{
LONG res;
HKEY hKey = NULL;
res = RegOpenKeyEx( HKEY_CURRENT_USER, key, 0, KEY_READ, &hKey );
if ( res != ERROR_SUCCESS )
goto err_exit;
res = RegQueryValueEx( hKey, option, NULL, NULL, (LPBYTE)value,
(LPDWORD)&size );
err_exit:
if ( hKey ) RegCloseKey( hKey );
return HRESULT_FROM_WIN32(res);
}
Used like this:
HRESULT GetAppDir( const char *app_prefix, char *app_dir )
{
char path[MAX_PATH];
char *key =
"Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Shell Folders";
char *option = "AppData";
HRESULT hr = S_OK;
if ( SUCCEEDED(hr = ReadRegistry( key, option, path, sizeof(path) )) )
{
EnsureSlash(path);
if ( !BuildDirChain( path, app_prefix ) )
{
strcpy( app_dir, path );
strcat( app_dir, app_prefix );
EnsureSlash(app_dir);
return hr;
}
}
return hr;
}
Which might be used like this:
char dataPath[MAX_PATH];
if ( FAILED(GetAppDir( "tuxpaint", dataPath)) )
{
getcwd(dataPath, sizeof(dataPath));
EnsureSlash(dataPath);
}
The functions EnsureSlash() and BuildDirChain() are just a couple of simple
functions knocking about my toolbox. They are probably already in Tux Paint
somewhere.
dataPath ends up set to the current working directory or something like:
"C:\Windows\Profiles\jfp\Application Data\tuxpaint\" on 98 and
"C:\Documents and Settings\jfp\Application Data\tuxpaint\" on XP
Not very convenient or aesthetically pleasing, but it works regardless of the
permissions of the currently logged in user,
cheers,
John.
>As for the Mac, it's a matter of knowing the conventions and having a test
>platform. I don't know the former and I don't have the latter. =(
>
>-Mark
>
>On Thu, 6 May 2004, Bill Kendrick wrote:
>> On Thu, May 06, 2004 at 11:23:42AM -0700, Mark K. Kim wrote:
>> > 0.9.15! =)
>>
>> Heh, you offering to work on it? ;) ;)
>>
>> -bill!
>> (Linux-less, other than a yet-to-be-constructed work server, my ISP shell,
>> and my Zaurus)
>> _______________________________________________
>> Tuxpaint-dev mailing list
>> [EMAIL PROTECTED]
>> http://tux4kids.net/mailman/listinfo/tuxpaint-dev
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