Defer Update When Changing BOM Structure

[mhumes]

Hi everyone,

I have a script for one of my assemblies that changes the BOM Structure on supressed items so that my drawing BOMs show correct quanties for the current representation. The assembly I use this on is very large so the script takes a long time to run. To change the BOM structure I have to mark the part as active then change it and deativate it. I think I would gain a lot of speed if I could tell Inventor not to update the screen during this process. 

Does anyone know how to do this?

Thanks,

ThisApplication.StatusBarText = "BOMAudit "

Dim oDoc As Document = ThisDoc.Document
Dim oCompDef As Inventor.ComponentDefinition = oDoc.ComponentDefinition
Dim oCompOcc As Inventor.ComponentOccurrence
doc = ThisDoc.Document

For Each oCompOcc in oCompDef.Occurrences
	voCompOcc = Component.InventorComponent(oCompOcc.Name)

	If oCompOcc.Suppressed = True Then 'Check for suppressed files without Default BOM Structure
		Component.IsActive(oCompOcc.Name) = True
		oCompOcc.BOMStructure = BOMStructureEnum.kReferenceBOMStructure
		Component.IsActive(oCompOcc.Name) = False
	Else			
		Component.IsActive(oCompOcc.Name) = True 'Turn on to allow for update
		oCompOcc.BOMStructure = BOMStructureEnum.kDefaultBOMStructure
	
	End If
Next

[adam.nagy · Accepted solution]

Hi there,

There are a few ways that you might be able to speed up your code, including:

StartGlobalTransaction, Application.ScreenUpdating, Application.AssemblyOptions.DeferUpdate

Here is Brian's class on this topic where you can find the above things too:

http://aucache.autodesk.com/au2012/sessionsFiles/3547/4363/handout_3547_CP3547-InventorAPIOddsAndEnd...

Cheers,

[mhumes]

Thanks Adam!

Using StartGlobalTransaction helped a ton. I combined that with stopping the screen from updating and I was able to take the average run time from 152.812s to 48.008s.

[ITIT1461]

Hi,

You can also check:

InventorApp.UserInterfaceManager().UserInteractionDisabled.

I got very good results disabling user input together with the other options already mentioned in Adam post.

Regards

Fabio