GM_MapCatalogCreate

Creates a new map catalog layer with the given description and native projection. Once you have created a new map catalog, use the handle returned in calls to GM_MapCatalogAddFile or GM_MapCatalogAddLayer to add new maps to the catalog. Use GM_MapCatalogSave to save the map catalog to a disk file that can later be loaded using any of the GM_LoadLayer* functions .

Syntax

GM_LayerHandle_t32 GM_MapCatalogCreate
(
const char*             aDescription,   // IN: Description to use for layer (can be NULL to use default)
const GM_Projection_t*  aProj           // IN: Native projection of new layer (NULL for Geographic/WGS84/Arc Degrees)
);