PowerPolicyNotify (Compact 2013)
3/26/2014
This function notifies Power Manager of the events required for implementing a power policy created by an OEM.
Syntax
BOOL PowerPolicyNotify(
DWORD dwMessage,
DWORD dwData
);
Parameters
dwMessage
[in] Set to one of the predefined PPN_* values, or a custom value. The following table shows the possible values for dwMessage and the corresponding values for dwData.dwMessage
Value
dwData
PPN_REEVALUATESTATE
0x0001
Reserved. Set dwData to zero.
PPN_POWERCHANGE
0x0002
Reserved. Set dwData to zero.
PPN_SUSPENDKEYPRESSED
- or -
PPN_POWERBUTTONPRESSED
0x0004
Reserved. Set dwData to zero.
PPN_SUSPENDKEYRELEASED
0x0005
Reserved. Set dwData to zero.
PPN_APPBUTTONPRESSED
0x0006
Reserved. Set dwData to zero.
PPN_OEMBASE
Greater than or equal to 0x10000.
You can define higher values, such as 0x10001, 0x10002, and so on.
Reserved. Set dwData to zero.
These values are only revelant for OEM-modified power management.
- dwData
[in] 32-bit value that varies depending on the dwMessage value.
Return Value
TRUE indicates success.
FALSE indicates failure.
Remarks
PowerPolicyNotify should be called in the keyboard/keypad driver.
When PowerPolicyNotify is called, it causes a thread internal to Power Manager to call into Power Manager platform device driver (PDD). To force a power condition, you may need to configure the priority of this internal thread. Configure the priority of this thread in the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power\SystemPriority256 registry key.
Requirements
Header |
pmpolicy.h |