自定义实体问题
我有 3 个文件:MyDbxCust.dbx、MyArxCust.arx、MyComCust.dbx问题:运行我的 ADS 命令
命令:(custgcd)
“选择点:”
选择一个点,画一个点,我的自定义实体 DXF_Name 是“高程点”,我想在对象属性管理器中显示我的 DXF_NAME,怎么做? 在包装类中 使用函数GetDisplayName 。
例如:
h-file
STDMETHOD(GetDisplayName) (DISPID dispId, BSTR *propName);
cpp-file:
STDMETHODIMP CAcDbRopeWraper::GetDisplayName (DISPID dispId, BSTR *propName)
{
switch (dispId)
{
case (0x401): // this is the object name identifier
*propName= ::SysAllocString(_T("高程点"));
break;
//...
}
}
SDK中有几个示例,请参见SDK\samples\com中的AsdkSquareWrapper和
samples\entity\polysamp(samples\ entity\polysamp\compoly)
polysample有很多优点,因为它展示了如何构建COM和.NET包装器,以及属性调色板的IOPMPropertyxxx内容。
谢谢你,我试试。 按照你的提示,我成功了。 我的自定义实体是 CMyGCD,但是当我运行 (entget ent) 时,返回的列表是:
((-1 . ) (0 . "高程点") (330 . ) (5 . "22F")
(100 . "AcDbEntity ") (67 . 0) (410 . "模型") (8 . "0") (100 . "AcDbCircle")
(10 0.0 0.0 0.0) (40 . 30.0) (210 0.0 0.0 1.0) (90 . 1) )
但它的实际坐标不是 '(0.0 0.0 0.0) ,请给我一些建议。 您可能需要覆盖这些函数
virtual Acad::ErrorStatusdxfInFields(AcDbDxfFiler* filer);
virtual Acad::ErrorStatus dxfOutFields(AcDbDxfFiler* filer) const;
谢谢,我覆盖了 dxfInFIelds 和 dxfOutFields,
//- Dxf Filing protocol
Acad::ErrorStatus CMyGcd::dxfOutFields (AcDbDxfFiler *pFiler) const {
assertReadEnabled () ;
//----- Save parent class information first.
Acad::ErrorStatus es =AcDbCircle::dxfOutFields (pFiler) ;
if ( es != Acad::eOk )
return (es) ;
es =pFiler->writeItem (AcDb::kDxfSubclass, _RXST("CMyGcd")) ;
if ( es != Acad::eOk )
return (es) ;
//----- Object version number needs to be saved first
if ( (es =pFiler->writeUInt32 (kDxfInt32, CMyGcd::kCurrentVersionNumber)) != Acad::eOk )
return (es) ;
//----- Output params
//.....
pFiler->writePoint3d(AcDb::kDxfXCoord, mCenter); //mycode
return (pFiler->filerStatus ()) ;
}
但是entget数据列表是:
((-1 . ) (0 . "高程点") (330 . ) (5 . "22F")
(100 . "AcDbEntity") (67 . 0) (410 . "Model") (8 . "0") (100 . "AcDbCircle")
(10 0.0 0.0 0.0)(40 . 0.0) (210 0.0 0.0 1.0) (100 . "CMyGcd") (90 . 1)
(10 2228.71 1228.61 0.0) )
有两个 10 DXF 码! 只是一个想法,因为你是从 AcDbCircle 派生的,你可能不需要另一个变量来保持中心,而是使用 AcDbCircle 的中心。 谢谢你的建议,你是对的!
当我创建我的自定义实体时:
static int ads_mygcd()
{
Acad::ErrorStatus es;
ads_point center, normal;
if (acedGetPoint(NULL, _T("\n选择点:"), center) != RTNORM)
return RSERR;
AcDbObjectId tsId = 0;
TCHAR styleBuf;
// Get default text style
struct resbuf result;
if ( acedGetVar(_T("TEXTSTYLE"), &result) != RTNORM ) {
acutPrintf(_T("\nError while reading default AutoCAD text style setting"));
return RSERR;
}
_tcscpy(styleBuf, result.resval.rstring);
acdbFree(result.resval.rstring);
if ( rx_getTextStyleId(styleBuf,acdbHostApplicationServices()->workingDatabase(),tsId) != Acad::eOk)
{
acutPrintf(_T("\nInvalid text style name"));
return RSERR;
}
CString txt = _T("");
txt.Format(_T("%.2f"), center);
TCHAR nameBuf;
_tcscpy(nameBuf, txt);
// Set the normal to the plane of the GCD to be the same as the
// z direction of the current ucs, i.e. (0, 0, 1) since we also got the
// center and start point in the current UCS.
normal = 0.0; normal = 0.0; normal = 1.0;
acdbUcs2Wcs(normal, normal, Adesk::kTrue);
acdbUcs2Ecs(center, center, normal, Adesk::kFalse);
AcGePoint3d cen = asPnt3d(center);
AcGePoint3d pt = AcGePoint3d(center+2.0,center,center);
AcGeVector3d norm = asVec3d(normal);
CMyGcd *pGcd = new CMyGcd();
if (pGcd->set(cen, pt, nameBuf, tsId, norm, 0.5, 4.0) != Acad::eOk) {
delete pGcd;
acutPrintf(_T("\nCannot create CMyGcd with given parameters."));
return RSERR;
}
pGcd->setDatabaseDefaults(curDoc()->database());
pGcd->transformBy(AcGeMatrix3d::translation(AcGeVector3d(center,center,center))); //在Dbx中怎么写才能代替这行代码?
AcDbBlockTable* pBT = NULL;
AcDbDatabase* pDB = acdbHostApplicationServices()->workingDatabase();
pDB->getSymbolTable(pBT, AcDb::kForRead);
AcDbBlockTableRecord* pBTR = NULL;
pBT->getAt(ACDB_MODEL_SPACE, pBTR, AcDb::kForWrite);
pBT->close();
AcDbObjectId Id;
pBTR->appendAcDbEntity(Id, pGcd);
pBTR->close();
pGcd->close();
return (RSRSLT);
}代码行:
pGcd->transformBy(AcGeMatrix3d::translation(AcGeVector3d(center,center,center)));
将使上述“(10 0.0 0.0 0.0)”项变为正确的值:
((-1 . ) (0 . "高程点") (330 . ) (5 . "22F")
(100 . "AcDbEntity") (67 . 0) (410 . "模型") (8 . "0") (100 . "AcDbCircle")
(10 2228.71 1228.61 0.0) (40 . 0.0) (210 0.0 0.0 1.0) (100 . "CMyGcd") (90 . 1)
)
我只想知道如何在我的 DBX 项目中实现这些目标。
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