Mine

int main () {
	TCHAR appdata[MAX_PATH];
	// Get the appdata directory:
	if(SUCCEEDED(SHGetFolderPath(NULL, CSIDL_APPDATA, NULL, 0, appdata))) {
		// This prints NOTHING!
		cout << string(appdata) << endl;
		home_dir = string(appdata) + "\\myapp\\";
		// This prints what I'd expect from appdata + the additional above???
		cout << home_dir << endl;
	}
}