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Mouse (DirectInput): a little help needed

vvvv beta question
#1

I’ve decided to create a node reading mouse data by DirectInput. it works so far (nicely outputs the relative and the absolute position and all the buttons) but i have some problems with it.
so first (and probably the simpler question is): how can i execute a method only at the initialization of the node? because now there has to be a separate pin for that (and it turns red before initialization).

second: i cannot set the cooperative level (i guess it’s the default now: it looks like background and non-exclusive). if i put back the commented out part i get this error in every SetCooperativeLevel()'s first argument (“this”):
cannot convert from “VVVV.Nodes.C1_0DirectInputMouseNode” to “System.Windows.Forms.Control”

so there is probably something what could solve the situation. anyone could help here?

here’s what i hammered together so far (13.0 kB)

#2

Hi, microdee.

If you want to create or do something only when node initializing, just use it’s constructor.

Place this after variables declaration:

[ImportingConstructor](ImportingConstructor)
public C1_0DirectInputMouseNode() {
	//Your run once code here
}

For cooperative level, you passing your node to this method by “this” keyword. It’s not right, because you need to pass current form or space i think.

#3

hiya! thanks! this helps a lot.
oh then what i should put in the SetCooperativeLevel to fit in vvvv’s environment. because all the examples what i found about DirectInput use forms

#4

well adding the constructor generated this error:

00:14:42 ERR : System.ComponentModel.Composition.CompositionException: The composition produced a single composition error. The root cause is provided below. Review the CompositionException.Errors property for more detailed information.

1) Object reference not set to an instance of an object.

Resulting in: An exception occurred while trying to create an instance of type 'VVVV.Nodes.C1_0DirectInputMouseNode'.

Resulting in: Cannot activate part 'VVVV.Nodes.C1_0DirectInputMouseNode'.
Element: VVVV.Nodes.C1_0DirectInputMouseNode -->  VVVV.Nodes.C1_0DirectInputMouseNode -->  TypeCatalog (Types='VVVV.Nodes.C1_0DirectInputMouseNode').

Resulting in: Cannot get export 'VVVV.Nodes.C1_0DirectInputMouseNode (ContractName="VVVV.PluginInterfaces.V1.IPluginBase")' from part 'VVVV.Nodes.C1_0DirectInputMouseNode'.
Element: VVVV.Nodes.C1_0DirectInputMouseNode (ContractName="VVVV.PluginInterfaces.V1.IPluginBase") -->  VVVV.Nodes.C1_0DirectInputMouseNode -->  TypeCatalog (Types='VVVV.Nodes.C1_0DirectInputMouseNode').

   at System.ComponentModel.Composition.Hosting.CompositionServices.GetExportedValueFromComposedPart(ImportEngine engine, ComposablePart part, ExportDefinition definition)
   at System.ComponentModel.Composition.Hosting.CatalogExportProvider.GetExportedValue(CatalogPart part, ExportDefinition export, Boolean isSharedPart)
   at System.ComponentModel.Composition.Hosting.CatalogExportProvider.CatalogExport.GetExportedValueCore()
   at System.ComponentModel.Composition.Primitives.Export.get_Value()
   at System.ComponentModel.Composition.ExportServices.GetCastedExportedValue[T](Export export)
   at System.ComponentModel.Composition.ExportServices.GetExportLifetimeContextFromExport[T](Export export)
   at System.ComponentModel.Composition.ExportServices.<>c**DisplayClass1c`1.<CreateStronglyTypedExportFactoryOfT>b**1b()
   at System.ComponentModel.Composition.ExportFactory`1.CreateExport()
   at VVVV.Hosting.Factories.DotNetPluginFactory.CreatePlugin(INodeInfo nodeInfo, IPluginHost2 pluginHost)
   at VVVV.Hosting.Factories.DotNetPluginFactory.CreateNode(INodeInfo nodeInfo, IInternalPluginHost pluginHost)
   at VVVV.Hosting.Factories.AbstractFileFactory`1.Create(INodeInfo nodeInfo, INode host)
   at VVVV.Hosting.HDEHost.factory_NodeInfoUpdated(Object sender, INodeInfo info)

what can i do now?

#5

upload your code please

#6

well i’ve just added what you said

with the constructor (37.3 kB)

#7

You can’t acess FLogger and ISpreads in constructor, because it’s creating after it.

#8

oh good to know:D

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