Getting special folders code question.

It depends on if you're minimum target is Windows XP or Windows Vista/7. I'm going V/7 minimum so my code for the save game is this:
[source lang="cpp"]Ogre::String getSavePath()
{
PWSTR path;
HRESULT hr = SHGetKnownFolderPath(FOLDERID_SavedGames, NULL, NULL, &path);

char newPath[MAX_PATH];

WideCharToMultiByte(CP_UTF8, NULL, path, -1, newPath, MAX_PATH, 0, NULL);

Ogre::String result = newPath;
result += "/MyCompany/";
result += PRODUCT_TITLE;

CoTaskMemFree(path);

return result;
}[/source]

[font=courier new,courier,monospace]Ogre::String[/font] can probably be converted to [font=courier new,courier,monospace]core::stringc[/font] and [font=courier new,courier,monospace]+= x;[/font] to [font=courier new,courier,monospace].append(x);[/font] without problems. AppData is just the above but with [font=courier new,courier,monospace]FOLDERID_LocalAppData[/font] instead of[font=courier new,courier,monospace]FOLDERID_SavedGames[/font]. Note that I threw that together quickly so be careful about buffer overflows with [font=courier new,courier,monospace]WideCharToMultiByte()[/font] (though I don't think there will be one, it never hurts to double check). Don't forget to change [font=courier new,courier,monospace]MyCompany[/font] and [font=courier new,courier,monospace]PRODUCT_TITLE[/font] to what they should be. I also use this to build the base path, not the final path, so you might neen to either add a parameter allowing you to append files to the result or add the filename to [font=courier new,courier,monospace]PRODUCT_TITLE[/font].

It depends on if you're minimum target is Windows XP or Windows Vista/7. I'm going V/7 minimum so my code for the save game is this:
[source lang="cpp"]Ogre::String getSavePath()
{
PWSTR path;
HRESULT hr = SHGetKnownFolderPath(FOLDERID_SavedGames, NULL, NULL, &path);

char newPath[MAX_PATH];

WideCharToMultiByte(CP_UTF8, NULL, path, -1, newPath, MAX_PATH, 0, NULL);

Ogre::String result = newPath;
result += "/MyCompany/";
result += PRODUCT_TITLE;

CoTaskMemFree(path);

return result;
}[/source]

[font=courier new,courier,monospace]Ogre::String[/font] can probably be converted to [font=courier new,courier,monospace]core::stringc[/font] and [font=courier new,courier,monospace]+= x;[/font] to [font=courier new,courier,monospace].append(x);[/font] without problems. AppData is just the above but with [font=courier new,courier,monospace]FOLDERID_LocalAppData[/font] instead of[font=courier new,courier,monospace]FOLDERID_SavedGames[/font]. Note that I threw that together quickly so be careful about buffer overflows with [font=courier new,courier,monospace]WideCharToMultiByte()[/font] (though I don't think there will be one, it never hurts to double check). Don't forget to change [font=courier new,courier,monospace]MyCompany[/font] and [font=courier new,courier,monospace]PRODUCT_TITLE[/font] to what they should be. I also use this to build the base path, not the final path, so you might neen to either add a parameter allowing you to append files to the result or add the filename to [font=courier new,courier,monospace]PRODUCT_TITLE[/font].

[source lang="cpp"]
int sizeRequired= WideCharToMultiByte(CP_UTF8, NULL, path, -1, NULL, 0, 0, NULL);

char newPath[sizeRequired];

WideCharToMultiByte(CP_UTF8, NULL, path, -1, newPath, sizeRequired, 0, NULL);[/source]

calling WideCharToMultiByte with a 0 as the 6th paramater gives you the size required.

However I get an error
'FOLDERID_SavedGames' was not declared in this scope as well as
'SHGetKnownFolderPath' was not declared in this scope

I have #include and am using mingw32-g++ as the compiler.

I think I need to install the windows SDK which is what I am doing now.

calling WideCharToMultiByte with a 0 as the 6th paramater gives you the size required.

Cool, I did not know that. I have now added that to my code; thanks!

I think I need to install the windows SDK which is what I am doing now.

This is probably the case, I have it installed and forgot about it. Though I would think that if it required the SDK, it would throw an error for the missing header rather than simply an undeclared constant. Perhaps the one that comes with MinGW is outdated...