DXFDATA结构包含DXF/DWG/HPG实体属性的信息。如果实体在块内，实体将为每个插入返回一个属性值,该属性是重新计算特殊插入的属性。

代码实例：
typedef struct _DXFDATA {
WORD Tag;
WORD Count;
WORD TickCount;
BYTE Flags;
BYTE Style;
int Dimension;
LPDXFPOINT DashDots;
int DashDotsCount;
int Color;
LPVOID *Ticks;
float Thickness;
float Rotation;
char* Layer;
char* Text;
DXFPOINT Point1;
DXFPOINT Point2;
DXFPOINT Point3;
DXFPOINT Point4;
union {
struct {
float Radius;
float StartAngle;
float EndAngle;
} Arc;
struct {
HANDLE Block;
DXFPOINT Scale;
} Blocks;
struct {
float FHeight;
float FScale;
float RWidth;
float RHeight;
BYTE HAlign;
BYTE VAlign;
} Text;
LPDXFPOINT *PolyPoints;
} DATA;
} DXFDATA, *LPDXFDATA;