GM_AddCustomAreaClass

Marius Lazar

September 02, 2026 13:44 Updated

Global Mapper SDK

Adds a new custom area classification.

Syntax

C++

GM_Error_t32 __stdcall GM_AddCustomAreaClass
(
const char*             aName,              // IN: Custom type name
const GM_AreaStyle_t*   aStyle,             // IN: Default draw style for features of this type
AreaFeatureClass_t16*   aFeatureCode        // OUT: Classification code for new type
);

Remarks

If this function succeeds, the new feature classification code will be returned in the aFeatureCode value. This code can then be used as the feature classification for area features.