# Interface-Buffer The main class of the generated interface is called “Interface-Buffer”. This class is responsible to handle the data, actions and events from both sides and provide them to the other side. The Interface-Buffer class contains the following methods: #### Init Initializes the Interface-Buffer.
**Argument Name****Type****Description**
**dataModel** DataModelThe generated Data-Model. Used to initialize data-values of the Interface-Buffer
**defaultActionQueueSize**FeatStd::UInt32Size of the Action-Queue in bytes. The action queue is used to store actions for later execution. By pre-initializing it with a proper size, costly runtime memory allocations can be avoided.
**defaultEventQueueSize**FeatStd::UInt32Size of the Event-Queue in bytes. The event queue is used to store event for later handling. By pre-initializing it with a proper size, costly runtime memory allocations can be avoided.
#### SetDataValue Sets data values of the Interface-Buffer. This method is intended to be called by the external system to send data to the CGI application.
**Argument Name****Type****Description**
**interfaceId** InputInterfaceId::EnumId of the interface to set the value.
**data**void\*Pointer to the data to be set.
**dataSize**FeatStd::UInt32Size of the data to be shared in bytes. This value will be ignored for static sized data unless INTERFACE\_DEBUG\_SIZECHECK\_ENABLED is defined.
**Result:** True if setting the data-value is successful. False otherwise. #### GetDataValue Gets data values of the Interface-Buffer. This method is intended to be called by the external system to send data to the CGI application.
**Argument Name****Type****Description**
**interfaceId** OutputInterfaceId::EnumId of the interface to get the value.
**target**void\*Pointer where the value should be written.
**maxTargetSize**FeatStd::UInt32Maximum size of in bytes that the ‘target’ can store. This value will be ignored for static sized data unless INTERFACE\_DEBUG\_SIZECHECK\_ENABLED is defined.
**dataSize**FeatStd::UInt32\*Actual size of the data to be written.
**Result:** True if getting the data-value is successful. False otherwise. If the return value is false and the dataSize > maxTargetSize the cause for the failure was that not enough memory was available to store the output value. #### TriggerAction Triggers the specified action.
**Argument Name****Type****Description**
**interfaceId** InputInterfaceId::EnumId of the action to trigger.
**data**void\*Pointer to data needed for the action.
**dataSize**FeatStd::UInt32Actual size of the data to be written. This value will be ignored for static sized data unless INTERFACE\_DEBUG\_SIZECHECK\_ENABLED is defined.
**Result:** True if getting action was successfully triggered. False otherwise. #### SwapActionQueue Swaps the action queue. #### ProcessEvents Gets events of the Interface-Buffer. This method is intended to be called by the external system to send data to the CGI application.
**Argument Name****Type****Description**
**eventHandler** Internal::EventHandler\*Pointer to the Event-Handler object. This will be called for every event in the queue.
**maxCount**FeatStd::Int32Maximum count of events to handle. Use ‘-1’ for unlimited amount.
The Event-Callback function must have the following arguments:
**Argument Name****Type****Description**
**interfaceId** FeatStd::UInt32Id of the event
**data**void\*Pointer to the event data if available.
**dataSize**FeatStd::UInt32Size of the event data if available.
#### ProcessInputDataValues Synchronizes the Interface-Buffer input data values with the applications Data-Model. This method is intended to be called by the CGI application.
**Argument Name****Type****Description**
**dataModel** DataModel\*The generated Data-Model.
#### ProcessOutputDataValues Synchronizes the Interface-Buffer output data values with the applications Data-Model. This method is intended to be called by the CGI application.
**Argument Name****Type****Description**
**dataModel** DataModel\*The generated Data-Model.
#### ProcessActions Executes all queued actions. This method is intended to be called by the CGI application.
**Argument Name****Type****Description**
**actionContext** Action::ActionContextAction-Context used to execute the action functions and basic actions (e.g. Message-Actions)
**sceneContext**Scene::SceneContextScene-Context used to execute the scene related actions (e.g. Scene-Interface or Scene-Table Interface)
**maxCount**FeatStd::Int32Maximum count of actions to handle. Use ‘-1’ for unlimited amount.
#### TriggerGenericEvent Raises a generic event. This method is intended to be called by the CGI application.
**Argument Name****Type****Description**
**interfaceId** OutputInterfaceId::EnumId of the event to raise.
**data**void\*Pointer to the data of the event if available.
**dataSize**FeatStd::UInt32Size of the event data if available.
**Result:** True if an event was raised (considering additional conditions). False otherwise. #### TriggerMessageEvent Raises a message event. This method is intended to be called by the CGI application.
**Argument Name****Type****Description**
**message** Courier::Message\*Message to check if an event is to be raised.
**Result:** True if an event was raised (considering additional conditions). False otherwise. #### TriggerFunctionCallEvents Raises Function-Call events. This method is intended to be called by the CGI application.
**Argument Name****Type****Description**
**actionContext** Action::ActionContext\*Action-Context used to call related Event-Functions.
**Result:** True if an event was raised (considering additional conditions). False otherwise. #### SwapEventQueue Swaps the event queue. ---