GM_SetLineFeaturePointListEx

Marius Lazar

September 02, 2026 13:44 Updated

Global Mapper SDK

Sets the list of point locations to use for the given line feature. The positions can either be specified in the native projection system of the layer ( aPosInLayerCoords is TRUE) or in the current projection as returned by GM_GetProjection ( aPosInLayerCoords is FALSE).

Syntax

C++

Copy

GM_Error_t32 GM_SetLineFeaturePointList
(
GM_LayerHandle_t32      aLayer,             // Layer the line is in
uint32                  aLineIndex,         // Index of line in layer
const GM_Point_t*       aPointList,         // New list of points for line
uint32                  aPointCount,        // Number of points in list (must be >= 2)
boolean                 aPosInLayerCoords   // Are the position in the layer coordinate system or the current coordinate system?
);