Ed Blake schrieb:
> AutoCAD 2008 typelib:
> [id(0x00000403), helpstring("Sets the extended data (XData) associated with
> an object"), helpcontext(0x00010231)] void SetXData(
> [in] VARIANT XDataType,
> [in] VARIANT XDataValue);
>
> Taken from Ole2View.
>>From Autocad Developer Help:
> Signature
>
> object.SetXData XDataType, XData
>
> Object
>
> All Drawing Objects , AttributeReference, Block, Dictionary, DimStyle, Group,
> Layer, Linetype, PlotConfigurations, RegisteredApplication, TextStyle, UCS,
> View, Viewport; XRecord
> The object or objects this method applies to.
>
> XDataType
>
> Variant (array of short); input-only
>
> XData
>
> Array of Variant; input-only
Ah, if XDataType must be an array of short (integers), then this call should
work:
line.SetXData(array.array("h", [1001, 1070]), ['Test_Application', 600])
The rules how the parameters (array.array("h", ...) and [...]) are converted
into VARIANTs are as follows:
- tuples and lists (which can contain items of any datatype - string, integer,
float, ...)
are converted to a VARIANT containing a SAFEARRAY of VARIANTs, typecode
VT_SAFEARRAY | VT_VARIANT
- array.array instances are converted to a VARIANT containing a SAFEARRAY a
VARIANTs
with a typecode as specified in the comtypes.automation._arraycode_to_vartype
dictionary, near line 650:
_arraycode_to_vartype = {
"d": VT_R8,
"f": VT_R4,
"l": VT_I4,
"i": VT_INT,
"h": VT_I2,
"b": VT_I1,
"I": VT_UINT,
"L": VT_UI4,
"H": VT_UI2,
"B": VT_UI1,
}
So, an array.array("h", ...) will result in a VARIANT with typecode VT_ARRAY |
VT_I2.
In the comtypes 0.5 version, this can be easily checked since VARIANT instances
contain the typecode in their repr() string (VARIANT.from_param(arg) is what
comtypes
calls internally when 'arg' is passed as parameter to a method which expects a
VARIANT):
>>> VARIANT.from_param(array.array('i', [1001, 1070]))
VARIANT(vt=0x2003, (1001, 1070))
>>> VARIANT.from_param(array.array('h', [1001, 1070]))
VARIANT(vt=0x2002, (1001, 1070))
>>> VARIANT.from_param(['foo', 600])
VARIANT(vt=0x200c, (u'foo', 600))
>>>
The typecodes are: 0x2000 - VT_ARRAY, 0x3 - VT_I4, 0x2 - VT_I2
Thomas
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