IDSFDevice::Persistent Property

  • 项目

The Persistent property describes whether a simulated device should remain present in the system after the computer restarts.

This property is read/write.

Syntax

HRESULT put_Persistent(
  [in]           VARIANT_BOOL fvarPersistent
);

HRESULT get_Persistent(
  [out, retval]  VARIANT_BOOL *pfvarPersistent
);

Property Value

A new persistence state for the device.

Error Codes

Persistent returns one of the following value:

Name Meaning
S_OK

The operation succeeded.
E_POINTER

The pfvarPersistent parameter was not a valid pointer.
E_INVALIDARG

The fvarPersistent parameter was not VARIANT_BOOL.

Examples

The following VBScript code example shows how to set and get the Persistent property.

` Create a USB device
Dim USBDevice : Set USBDevice = CreateObject("SOFTUSB.SoftUSBDevice")

` Get the DSFDevice object from the USB device
Dim DSFDevice : Set DSFDevice  = USBDevice.DSFDevice

` Get the Persistent property
Dim Persistent
Persistent = DSFDevice.Persistent

` If the device is not persistent, make the device persistent
If Persistent <> TRUE Then
 DSFDevice.Persistent = TRUE;
End If

See Also

IDSFDevice

 

 

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Build date: 9/21/2010