IWDFDeviceInitialize::SetPowerPolicyOwnership method (wudfddi.h)
[Warning: UMDF 2 is the latest version of UMDF and supersedes UMDF 1. All new UMDF drivers should be written using UMDF 2. No new features are being added to UMDF 1 and there is limited support for UMDF 1 on newer versions of Windows 10. Universal Windows drivers must use UMDF 2. For more info, see Getting Started with UMDF.]
The SetPowerPolicyOwnership method sets the ownership of the power policy to a driver or removes ownership from the driver.
Syntax
void SetPowerPolicyOwnership(
[in] BOOL fTrue
);
Parameters
[in] fTrue
A BOOL value that specifies whether to set power-policy ownership to the driver or remove ownership from the driver. TRUE indicates to set power-policy ownership to the driver; FALSE indicates to remove ownership from the driver.
Return value
None
Remarks
By default, UMDF drivers are not registered as power-policy owners for their device stack. To register itself as the power-policy owner for its device stack, a UMDF driver must explicitly call SetPowerPolicyOwnership and pass TRUE to the fTrue parameter in this call.
For more information, see Power Policy Ownership in UMDF.
Examples
For a code example of how to use the SetPowerPolicyOwnership method, see IWDFDriver::CreateDevice.
Requirements
| Requirement | Value |
|---|---|
| End of support | Unavailable in UMDF 2.0 and later. |
| Target Platform | Desktop |
| Minimum UMDF version | 1.5 |
| Header | wudfddi.h (include Wudfddi.h) |
| DLL | WUDFx.dll |