Driver Object
Every driver has a driver object, which supports a callback for the add-device event. A driver object can store global data for the driver and can support a callback to clean up that data when the driver is unloaded.
UMDF Driver Callback Object Creation
For a UMDF driver, the framework creates a framework driver object and then calls the driver’s IClassFactory::CreateInstance method on the driver callback object’s class factory, which creates a driver callback object. The driver callback object implements the IDriverEntry interface, which supports the methods in Table 6-1.
Table 6-1. IDriverEntry Interface
Method | Description |
|---|---|
OnInitialize | Initializes driver-wide data for the driver callback object and performs any other initialization ... |
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