数据库中的字典类，用户的自定义数据可以存放在字典中，它可以理解一个映射表，字符串是关键字，可以映射到任何一个对象。字典中可以再包含字典
[ object, uuid(9D534308-91B2-4F11-8585-E3664B808850), dual, nonextensible, helpstring("IMxDrawDictionary interface"), pointer_default(unique) ]
interface IMxDrawDictionary : IMxDrawMcDbObject;MxDrawDictionary.idl
例如: VB 向数据库读写用户自定义的全局数据，通过扩展记录实体，代码如下:
写全局数据
Private Sub writenamedict_Click()
Dim database As MxDrawXLib.MxDrawDatabase
Set database = MxDrawX1.GetDatabase
Dim nameDict As MxDrawXLib.MxDrawDictionary
Set nameDict = database.GetNamedObjectsDictionary
Dim myDict As MxDrawXLib.MxDrawDictionary
Set myDict = nameDict.AddObject("MyDict", "McDbDictionary")
Dim xRecord As MxDrawXLib.MxDrawXRecord
Set xRecord = myDict.AddXRecord("MyGlobalData")
If (xRecord Is Nothing) Then
MsgBox "向字典中，增加扩展记录失败"
Exit Sub
End If
Dim xData2 As MxDrawXLib.MxDrawResbuf
Set xData2 = New MxDrawXLib.MxDrawResbuf
xData2.AddLong 99999
xData2.AddDouble 666
Set ptTest = New MxDrawXLib.MxDrawPoint
ptTest.x = 77
ptTest.y = -100
xData2.AddPoint ptTest
xData2.AddString "TestApp2", 1001
xData2.AddString "张三2"
xRecord.SetXRecordData2 xData2
MsgBox "写全局数据成功"
End Sub
取全上面写的全局数据
Private Sub readnamedict_Click()
Dim database As MxDrawXLib.MxDrawDatabase
Set database = MxDrawX1.GetDatabase
Dim nameDict As MxDrawXLib.MxDrawDictionary
Set nameDict = database.GetNamedObjectsDictionary
Dim myDict As MxDrawXLib.MxDrawDictionary
Set myDict = nameDict.GetAt("MyDict")
If (myDict Is Nothing) Then
MsgBox "字典中,没有自定义数据"
Exit Sub
End If
Dim xRecord As MxDrawXLib.MxDrawXRecord
Set xRecord = myDict.GetAt("MyGlobalData")
If (xRecord Is Nothing) Then
MsgBox "向字典中,没有扩展记录"
Exit Sub
End If
Dim data As MxDrawXLib.MxDrawResbuf
Set data = xRecord.GetXRecordData2
data.PrintData
End Sub
例如: C# 向数据库读写用户自定义的全局数据，通过扩展记录实体，代码如下:
void wirteVer(String sName, String sVal) { MxDrawDatabase database = (MxDrawDatabase)axMxDrawX1.GetDatabase(); MxDrawDictionary dict = database.GetNamedObjectsDictionary(); MxDrawDictionary myDict = (MxDrawDictionary)dict.GetAt("MyExDataDictName"); if (myDict == null) { myDict = (MxDrawDictionary)dict.AddObject("MyExDataDictName", "McDbDictionary"); } MxDrawXRecord rec = (MxDrawXRecord)myDict.GetAt(sName); if (rec == null) { rec = myDict.AddXRecord(sName); } MxDrawResbuf res = new MxDrawResbuf(); res.AddString(sVal); rec.SetXRecordData(res); } String readVar(String sName) { MxDrawDatabase database = (MxDrawDatabase)axMxDrawX1.GetDatabase(); MxDrawDictionary dict = database.GetNamedObjectsDictionary(); MxDrawDictionary myDict = (MxDrawDictionary)dict.GetAt("MyExDataDictName"); if (myDict == null) { return ""; } MxDrawXRecord rec = (MxDrawXRecord)myDict.GetAt(sName); if (rec == null) { return ""; } MxDrawResbuf ret = rec.GetXRecordData(); if (ret == null) return ""; return ret.AtString(0); } private void buttondict_Click(object sender, EventArgs e) { wirteVer("MyName", "666666"); } private void buttonreaddict_Click(object sender, EventArgs e) { String sRet = readVar("MyName"); if (sRet == "") { MessageBox.Show("没有数据"); } else { MessageBox.Show(sRet); } }