globalmapper.MapCatalogAddLayer
===============================

.. currentmodule:: globalmapper
.. py:function:: MapCatalogAddLayer (GM_LayerHandle_t32 aCatalogLayer, GM_LayerHandle_t32 aMapLayer) -> GM_Error_t32

    Adds a new map to the map catalog from a layer that has already been loaded. The *aCatalogLayer* parameter should
    have either been created using :doc:`MapCatalogCreate<globalmapper.MapCatalogCreate>` or loaded with one of the LoadLayer* functions.

    Note that the layer provided will remain open as a separate layer as well. If this is not the desired behavior,
    simply call :doc:`CloseLayer<../load/globalmapper.CloseLayer>` on the map layer after adding it to the catalog layer.

    :param GM_LayerHandle_t32 aCatalogLayer: Handle to map catalog layer (either from loading or CreateMapCatalog)
    :param GM_LayerHandle_t32 aMapLayer: Handle of loaded map layer to add to the catalog
    :returns: Error Code
    :rtype: GM_Error_t32