Expandir Minimizar

WdfDeviceRemoveDependentUsageDeviceObject method

[Applies to KMDF only]

The WdfDeviceRemoveDependentUsageDeviceObject method indicates that a specified device no longer depends on another device when the specified device is used to store special files.

Syntax


VOID WdfDeviceRemoveDependentUsageDeviceObject(
  [in] WDFDEVICE      Device,
  [in] PDEVICE_OBJECT DependentDevice
);

Parameters

Device [in]

A handle to a framework device object.

DependentDevice [in]

A pointer to a caller-supplied DEVICE_OBJECT structure that identifies a device that Device depends on.

Return value

None.

Remarks

Your driver can call WdfDeviceRemoveDependentUsageDeviceObject to remove a device dependency that a previous call to WdfDeviceAddDependentUsageDeviceObject created.

For more information about WdfDeviceRemoveDependentUsageDeviceObject and WdfDeviceRemoveDependentUsageDeviceObject, see Supporting Special Files.

Examples

The following code example removes a device (pDeviceObject) from the list of devices that another device (device) depends on.


status = WdfDeviceRemoveDependentUsageDeviceObject(
                                                device,
                                                pDeviceObject
                                                );

Requirements

Target platform

Universal

Minimum KMDF version

1.9

Header

Wdfdevice.h (include Wdf.h)

Library

Wdf01000.sys (see Framework Library Versioning.)

IRQL

<=DISPATCH_LEVEL

DDI compliance rules

DriverCreate, KmdfIrql, KmdfIrql2

See also

WdfDeviceAddDependentUsageDeviceObject

 

 

Send comments about this topic to Microsoft

Mostrar:
© 2015 Microsoft