PPG logic 2005-06-07 - By Bernard Lebel
Back
Okay, I have been messing with this for hours now, and I can't still
my head around it.
So I want a custom property page with a few logic. Logic does not need
to persist, the ppg is inspected in siModal mode and deleted after
that.
Following the example in the doc as well as reading the mailing list
archive (this thread:
http://www.softimage.com/community/xsi/discuss/archives/xsi.archive.0409
/msg00616.htm),
it seems I can't get it to work. All I want is a combo box that when
it is set to the first choice, it reveals another parameter.
So I create the cpset, add a bunch of parameters:
# Create combo box content
oElementType = oProp.addparameter3( 'ElementTypeCombo', c.siString,
'-- --- Create new' )
aElementTypes = [ '-- --- Create new', '-- --- Create new',
'ENVIRONMENT', 'ENVIRONMENT',
'CHARACTERS', 'CHARACTERS',
'PROPS', 'PROPS',
'CAMERA_RIG', 'CAMERA_RIG',
'LIGHT_RIG', 'LIGHT_RIG' ]
# Create text field for new element
oNewElementType = oProp.addparameter3( 'NewElementType', c.siString, '' )
Then move on to the layout/logic part:
oLayout = oProp.ppglayout
oLayout.Logic = OnInit()
oLayout.Language = "Python ActiveX Scripting Engine"
So here is how my logic/layout functions are setup, following the
example from the scripting reference:
def OnInit():
ElementTypeCombo_OnChanged()
def ElementTypeCombo_OnChanged():
CreateLayout( oProp.ElementTypeCombo.value )
#oProp.Refresh()
def CreateLayout( sValue ):
oLayout = oProp.PPGLayout
oLayout.Clear()
oLayout.AddGroup( "Element type" )
oLayout.AddEnumcontrol( "ElementTypeCombo", aElementTypes, "Element
type", "siControlCombo" )
if oProp.parameters( 'ElementTypeCombo' ).value == "-- --- Create new":
oLayout.AddString( "NewElementType", "New element type", False )
oLayout.EndGroup()
Now, whenever I run this, I get a type mismatch error:
# oLayout.Logic = OnInit()
# File "C:\Python24\Lib\site-packages\win32com\client\dynamic.py",
line 527, in __setattr__
# self._oleobj_.Invoke(entry.dispid, 0, invoke_type, 0, value)
#COM Error: Type mismatch. (0x-7ffdfffb) - [line 97]
pointing to the line
oLayout.Logic = OnInit()
Any help would be great, as I have to admit I more or less don't have
a clue what I'm doing here.
Bernard
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