The main use of Function:
MxDrawEntity::GetxDataDouble2
Reading a Double extension data as detailed below:
| parameter | Explanation |
|---|---|
| [in] LONG lItem |
The value of the location |
| [out, retval] BSTR* pRet |
Returns the value of the variable |
| szAppName |
Extended data Name |
js code to achieve the following:
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function
GetxDataDouble() {
var
selEnt = mxOcx.NewComObject(
"IMxDrawUiPrEntity"
);
selEnt.message =
"选择要读取扩展数据的对象"
;
if
(selEnt.go() != 1)
return
;
var
ent = selEnt.Entity();
if
(ent ==
null
)
return
;
var
val = ent.GetxDataDouble2(
"ExDataName"
, 0);
if
(mxOcx.IsOk()) {
alert(val);
}
else
{
alert(
"没有扩展数!"
);
}
}
|