1.2

User data may be attached to any drawing entity or to the drawing header and used for storage of entity information, drawing information, custom settings, or indices to external tables. This data can be assigned and retrieved from entities based on the data type and the specified index.

extern "C" BYTE WINAPI VCGetCurrentEntityUserDataByte(short* iError, short iIndex);
extern "C" void WINAPI VCSetCurrentEntityUserDataByte(short* iError, short iIndex, BYTE b);

function VCGetCurrentEntityUserDataByte(var iError: Smallint; iIndex: Smallint):Smallint; stdcall;
procedure VCSetCurrentEntityUserDataByte(var iError: Smallint; iIndex: Smallint; b: Smallint); stdcall;

Function GetCurrentEntityUserDataByte(ByVal iIndex As Integer) As Byte
Sub SetCurrentEntityUserDataByte(ByVal iIndex As Integer, ByVal b As Byte)

iIndex - the index number within the current entity where the chunk should be stored.
b - Byte attached to the entity

VCAddCurrentEntityUserDataChunk, VCAddCurrentEntityUserDataByte, VCAddCurrentEntityUserDataDouble, VCAddCurrentEntityUserDataFloat, VCAddCurrentEntityUserDataLong, VCAddCurrentEntityUserDataShort, VCGetUserDataName, VCGetCurrentEntityUID, VCGetCurrentEntityUserDataChunk, VCGetCurrentEntityUserDataCount, VCGetCurrentEntityUserDataDouble, VCGetCurrentEntityUserDataKind, VCGetCurrentEntityUserDataLong, VCGetCurrentEntityUserDataFloat, VCGetCurrentEntityUserDataShort, VCGetCurrentEntityUserDataString, VCGetCurEntUserDataChunkSize, VCSetEntityUserData, VCSetHeaderUserData