GM_ConvertCoordPixelToGround

Marius Lazar

September 02, 2026 13:40 Updated

Global Mapper SDK

Convert a coordinate between pixel space and the current projection. The conversion space can be either the last drawn coordinate space or the caller can provide the coordinate space to work in.

Syntax

C++

Copy

GM_Error_t32 __stdcall GM_ConvertCoordPixelToGround
( 
sint32                  aPixelX,        // IN: X Coord in pixel space
sint32                  aPixelY,        // IN: Y Coord in pixel space
double*                 aGroundX,       // OUT: X Coord in current projection
double*                 aGroundY        // OUT: Y Coord in current projection
const GM_Rectangle_t*   aWorldBounds,   // IN: World bounds to convert from or NULL for last drawn
const GM_PixelRect_t*   aPixelRect      // IN: Pixel bounds to convert from or NULL for last drawn 
)