The WM_POWERBROADCAST message is sent to an application to notify it of power-management events.
dwPowerEvent = (DWORD) wParam;
dwData = (DWORD) lParam;
Value |
Meaning |
Battery power is low. | |
OEM-defined event occurred. | |
Power status has changed. | |
Request for permission to suspend. | |
Suspension request denied. | |
Operation resuming after critical suspension. | |
Operation resuming after suspension. | |
System is suspending operation. |
However, if wParam is one of the resume notifications (PBT_APMRESUME*), the lParam parameter can specify the PBTF_APMRESUMEFROMFAILURE flag. This flag indicates that a suspend operation failed after the PBT_APMSUSPEND message was sent.
Return TRUE to grant a request.
Return BROADCAST_QUERY_DENY to deny a request.
file: /Techref/os/win/api/win32/mess/src/msg26_29.htm, 3KB, , updated: 2000/4/7 12:20, local time: 2024/8/23 12:24,
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