IMxDrawSelectionSet::Select2 方法

构造选择集

IDL

[helpstring("method Select2")]
HRESULT Select2([in] MCAD_McSelect Mode, [in] VARIANT point1, [in] VARIANT point2, [in,optional] VARIANT filterType, [in,optional] VARIANT filterData);

参数

参数	说明
[in] MCAD_McSelect Mode	构造选择集方式
[in] VARIANT point1	构造择择集时需要使用到的点对象
[in] VARIANT point2	构造择择集时需要使用到的点对象
[in,optional] VARIANT filterType	构造选择集的过滤数据的类型
[in,optional] VARIANT filterData	构造选择集的过滤数据

备注

例如: C# ,得到0层，上的直线和圆弧，并且颜色是红色的实体。

        private void button14_Click_1(object sender, EventArgs e)
        {
            MxDrawSelectionSet ss = new MxDrawSelectionSet();
            MxDrawResbuf filter = new MxDrawResbuf();
            // "0"，是图层名，8是DXF码，代表"0"是个图层字符串。

            // 选择 0层上的实体。
            filter.AddString("0", 8);

            // 选择直线或圆弧实体。5020是DXF码，代表"LINE"是类型字符串。
            filter.AddString("LINE,ARC", 5020);


            // 选择红色的实体。1为颜色索引值，代表红色。 62是DXF码，但1是个颜色类型。
            filter.AddLong(1,62);

            ss.Select2(MCAD_McSelect.mcSelectionSetAll, null, null, null,filter);

            int i = 0;
            for (; i < ss.Count; i++)
            {
                MxDrawEntity ent =  ss.Item(i);

                MessageBox.Show(ent.Dxf0);
            }

        }

例如: VC6代码

        void CTestOcxForVc6Dlg::OnDelplButton()
        {
            // TODO: Add your control notification handler code here
            MxDrawXLib::IMxDrawSelectionSetPtr ssGet;
            ssGet.CreateInstance(__uuidof( MxDrawXLib::MxDrawSelectionSet ));
            if(ssGet == NULL)
            {
                return;
            }

            MxDrawXLib::IMxDrawResbufPtr filter;
            filter.CreateInstance(__uuidof( MxDrawXLib::MxDrawResbuf ));

            // 设置多义线为过滤条件
            filter->AddString(_T("*POLYLINE"),5020);

            std::auto_ptr<_variant_t> spVarPt1(new _variant_t);
            std::auto_ptr<_variant_t> spVarPt2(new _variant_t);
            ssGet->Select2(mcSelectionSetAll,*spVarPt1.get(),*spVarPt2.get(),NULL,filter);



            for(long i = 0; i < ssGet->GetCount();i++)
            {
                MxDrawXLib::IMxDrawEntityPtr spEnt =  ssGet->Item(i);
                if(spEnt == NULL)
                    continue;

                spEnt->Erase();
            }
        }

例如: VC代码，得到选择的图块个数.

        using namespace MxDrawXLib;
        void CTestDynCreateDlg::DoSelectBlk()
        {
            IMxDrawUtilityPtr utility;
            utility.CreateInstance(__uuidof( MxDrawUtility ));
            if(utility == NULL)
            {
                return;
            }
            

            _variant_t varPrompt;
            V_VT(&varPrompt)  = VT_BSTR;
            CString sPrompt;
            sPrompt.Format(_T("选择一个实体:"));
            V_BSTR(&varPrompt) = sPrompt.AllocSysString();

            _variant_t varSelPt;
            MxDrawXLib::IMxDrawEntityPtr spEnt =    utility->GetEntity(&varSelPt,varPrompt);

            if(spEnt == NULL)
                return;

            CString sName((const char*)(spEnt->ObjectName) );

            CComPtr<IMxDrawBlockReference> spBlk;
            spEnt->QueryInterface(&spBlk);

            if(spBlk == NULL)
            {
                return;
            }

            CString sBlkName = spBlk->GetBlockName();

            MxDrawXLib::IMxDrawSelectionSetPtr ssGet;
            ssGet.CreateInstance(__uuidof( MxDrawXLib::MxDrawSelectionSet ));
            if(ssGet == NULL)
            {
                return;
            }

            MxDrawXLib::IMxDrawResbufPtr filter;
            filter.CreateInstance(__uuidof( MxDrawXLib::MxDrawResbuf ));

            // 设置图块
            filter->AddString(_T("INSERT"),5020);
            _bstr_t blkName((LPCTSTR)sBlkName);
            filter->AddString(blkName,2);

            std::auto_ptr<_variant_t> spVarPt1(new _variant_t);
            std::auto_ptr<_variant_t> spVarPt2(new _variant_t);
            ssGet->Select2(mcSelectionSetAll,*spVarPt1.get(),*spVarPt2.get(),NULL,filter);

            if(ssGet->GetCount() == 0)
                return;

        //  for(long i = 0; i < ssGet->GetCount();i++)
        //  {
        //      MxDrawXLib::IMxDrawEntityPtr spEnt =  ssGet->Item(i);
        //      if(spEnt == NULL)
        //          continue;
        //  }

            CString sT;
            sT.Format(_T("发现了%d个"), ssGet->GetCount());
            AfxMessageBox(sT);
        }

参见其它

IMxDrawSelectionSet 方法

请参见

IMxDrawSelectionSet 接口, IMxDrawSelectionSet 成员, IMxDrawSelectionSet 方法

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