Method GetIconFileForPlugin

PathCopyCopy/src/PathCopyCopySettings.cpp:769–798

Looks in the Icons key and attempts to find an icon file for the given plugin. @param p_PluginId ID of plugin to look for. @return If an icon file exists for this plugin, will return its path. If the default icon is to be used, will return an empty string. If no icon is specified for this plugin, will return a value whose has_value() method returns false.

    // for this plugin, will return a value whose has_value() method returns false.
    //
    std::optional<std::wstring> Settings::GetIconFileForPlugin(const CLSID& p_PluginId) const
    {
        // Perform late-revising.
        Revise();

        // Assume there's no info for the icon.
        std::optional<std::wstring> resultingIconFile;

        // Convert plugin ID to string.
        StOleStr pluginIdAsString;
        const HRESULT hRes = ::StringFromCLSID(p_PluginId, &pluginIdAsString);
        if (SUCCEEDED(hRes)) {
            // Look for a value for this plugin in the icons key.
            std::wstring iconFile;
            if (PluginUtils::ReadRegistryStringValue(m_IconsKey, pluginIdAsString, iconFile) == ERROR_SUCCESS) {
                // Check if it's the marker value pointing to the default icon.
                if (iconFile == DEFAULT_ICON_MARKER_STRING) {
                    // Return an empty string to note this.
                    resultingIconFile.emplace();
                } else {
                    // Return the value, which should point to icon file.
                    resultingIconFile = iconFile;
                }
            }
        } else {
            throw SettingsException(hRes);
        }

        return resultingIconFile;
    }

    //
    // Checks whether the administrator has disabled editing of the