GM_MapCatalogGetMapInfo

Marius Lazar

September 02, 2026 13:17 Updated

Global Mapper SDK

Retrieves information about a map in a catalog (use GM_MapCatalogGetInfo to get the map count). Returns NULL if the catalog is not valid or no map exists in the catalog at the given index. Otherwise, consider the returned pointer temporary. It will become invalid after the next call to this function.

Syntax

C++

Copy

const GM_LayerInfo_t* GM_MapCatalogGetMapInfo
(
GM_LayerHandle_t32      aCatalogLayer,  // IN: Handle to map catalog layer (either from loading or GM_CreateMapCatalog)
uint32                  aMapIndex       // IN: Index of map (0-based) to get info about
);