Retrieve objects

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LiteCAD drawing contains a named objects as a layer, linetype, text style, etc. and a graphics objects, as a line, polyline, arc, text, etc.
There are several functions intended to find required object.

Retrieve named objects

Function	Meaning
lcDrwGetFirstObject lcDrwGetNextObject	Used to sequentially retrieve all objects
lcDrwGetObjectByName	Retrieves an object by its name
lcDrwGetObjectByID lcDrwGetObjectByIDH	Retrieves a named object by its identifier

Retrieve graphic objects

Function	Meaning
lcDrwGetEntByID lcDrwGetEntByIDH	Retrieves an entity by its identifier
lcDrwGetEntByKey	Retrieves a graphic object by its key value
lcWndGetEntByID lcWndGetEntByIDH	Retrieves an entity by its identifier
lcWndGetEntByKey	Retrieves a graphic object by its key value
lcBlockGetFirstEnt lcBlockGetNextEnt lcBlockGetLastEnt lcBlockGetPrevEnt	Used to sequentially retrieve all entities from a block
lcBlockGetEntByID lcBlockGetEntByIDH	Retrieves an entity by its identifier
lcBlockGetEntByKey	Retrieves an entity by its key value
lcBlockGetFirstSel lcBlockGetNextSel	Used to sequentially retrieve all selected entities from a block
Locate by position
lcWndGetEntByPoint	Gets one entity at specified position (window coordinates)
lcWndGetEntByPoint2	Gets one entity at specified position (drawing coordinates)
lcWndGetEntsByPoint	Gets an array of entities at specified position (window coordinates)
lcWndGetEntsByRect	Gets an array of entities by specified rectangle (drawing coordinates)
lcWndGetEntity	Returns a handle to entity in the array
Retrieve simple polylines of graphic object
lcExpEntity	Explode entity to inner buffer
lcExpGetPline	Get a polyline from inner buffer
lcExpGetVertex	Get coordinates of polyline vertex