【ARX 一步一步开发CAD】01-新建图层

colinzhoucn

//打开图层表，打开方式为只写
AcDbLayerTable * pLayerTable;
acdbHostApplicationServices()->workingDatabase()->getSymbolTable(pLayerTable,AcDb::kForWrite);

//初始化层表记录对象，并设定图层名称“NewLayer”
AcDbLayerTableRecord * pLayerTableRecord = new AcDbLayerTableRecord;
( |9 A1 L' Z- @$ l: cpLayerTableRecord->setName(L”NewLayer”);

//图层的其他属性（例如颜色、线形等）都用默认值
1 L# r+ N+ L* [! Y  y/ J4 [//将新建的图层表记录添加到图层表中，并将图层表记录的ID
//保存到pLayerId中，作为函数的返回值
+ b# @3 Z& ]5 w# I! @* l0 A7 j: BAcCmColor color; // AcCmColor是ACAD颜色管理类
- g; I3 ~! M0 ^$ ?# F: M/ C' f1 Kcolor.setColorIndex(1); //红色
(color.setRGB (0,0,0)
pLayerTableRecord->setColor(color);
$ \2 h4 I5 u8 O6 v) ?1 L) x9 EAcDbObjectId pLayerId;
pLayerTable->add(pLayerId,pLayerTableRecord);
pLayerTable->close();
pLayerTableRecord->close();

示例：创建两个图层：
//打开图层表，打开方式为只写
AcDbLayerTable * pLayerTable;
& E1 `* E3 ^: W, a/ gAcDbLayerTableRecord * pLayerTableRecord ;
5 M8 H1 G! E7 A- H' e( ^AcCmColor color;// AcCmColor是ACAD颜色管理类
( @  t; _: x, A, o7 v* C6 TAcDbObjectId pLayerId;
acdbHostApplicationServices()->workingDatabase()->getSymbolTable(pLayerTable,AcDb::kForWrite);
$ J& D6 g& ?' f//初始化层表记录对象，并设定图层名称“结-1”
1 ?1 E/ X, J+ L! U7 t/ spLayerTableRecord = new AcDbLayerTableRecord;
, h) e) m5 B3 H  ]4 f* |  apLayerTableRecord->setName(_T(“结-1″));
$ n  c1 x! P( s, m2 }) ~color.setColorIndex(5);
5 w; S* u4 l  w" r5 W+ H" RpLayerTableRecord->setColor(color);
7 M+ b1 q: i, Z" i- UpLayerTable->add(pLayerId,pLayerTableRecord);
pLayerTableRecord->close();
5 K0 z1 Q4 |! Q" x% {* v//设定图层名称“结-2”
- Z7 F6 J8 t$ v* K- KpLayerTableRecord = new AcDbLayerTableRecord;
, K% v$ B5 t, r" K& r; qpLayerTableRecord->setName(_T(“结-2″));
color.setColorIndex(1);
+ v6 S1 u5 \. J. `1 G$ qpLayerTableRecord->setColor(color);
3 {, }5 D& Y- Y: tpLayerTable->add(pLayerId,pLayerTableRecord);
2 ]3 m: a, U' LpLayerTableRecord->close();
. N. z/ y; @) c1 ApLayerTable->close();

( F% H1 q9 K1 L' A7 E% w参考：http://www.colinchou.com/archives/236
- O7 U  @+ D& E) ?& [( u! [