!wdfkd.wdfhandle

The !wdfkd.wdfhandle extension displays information about a specified framework object handle, such as the handle type, object context pointers, and the underlying framework object pointer.

Syntax

!wdfkd.wdfhandle Handle [Flags] 

Parameters

Handle

A handle to a framework object.

Flags

Optional. Flags that specify the kind of information to display. Flags can be any combination of the following bits. The default value is 0x0.

Bit 4 (0x10)

The display will include the subtree of child objects for the specified handle.

Bit 5 (0x20)

The display will include context and callback function information for the specified handle. This flag is valid only when bit 4 (0x10) is set.

Bit 6 (0x40)

The display will include additional information for the specified handle. This flag is valid only when bit 4 (0x10) is set.

Bit 7 (0x80)

The handle information will be displayed in a more compact format.

Bit 8 (0x100)

The display will left align internal type information. This flag is valid only when bit 4 (0x10) is set.

DLL

Comments

The following example shows the output of the !wdfhandle extension with bit 4 set in the Flags parameter (so the output displays information about the child objects).

kd> !wdfhandle 0x7ca7b1c0 10

handle 0x7ca7b1c0, type is WDFDEVICE

Contexts:
    context:  dt 0x83584ff8 ROOT_CONTEXT (size is 0x1 bytes)
     <no associated attribute callbacks>

Child WDFHANDLEs of 0x7ca7b1c0:
    WDFDEVICE 0x7ca7b1c0
        WDFCMRESLIST 0x7ccfb058
        WDFCMRESLIST 0x7cadb058
        WDFCHILDLIST 0x7c72f0c8
        WDFCHILDLIST 0x7cc090c8
        WDFIOTARGET 0x7c9630b8

!wdfobject 0x83584e38

In the preceding example, the input handle refers to a WDFDEVICE object. This particular device object has five child objects—two WDFCMRESLIST objects, two WDFCHILDLIST objects, and one WDFIOTARGET object.

Additional Information

For more information, see Kernel-Mode Driver Framework Debugging.