How to: Determine Battery Status

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The Windows CE GetSystemPowerStatusEx2 function can be called to return the SYSTEM_POWER_STATUS_EX2 structure. This structure contains important details about the power state of the device. Three of the most useful details in this structure are the ACLineStatus, BatteryFlag, and BatteryLifePercent members.

To produce accurate and complete information, device manufacturers must populate this data from their battery drivers, as shown in the following code:

PSYSTEM_POWER_STATUS_EX2 pwrstat=0;
if (!GetSystemPowerStatusEx2(pwrstat,sizeof(pwrstat),FALSE))
{
    MessageBox(hWnd,_T("Couldn't get power state"), 
              _T("Error"),MB_OK);
} 
else
{
// Extract the power status information you need.
}

See Also

Application Hibernation

Handling Low Memory States

How to: Determine Available Memory

How to: Prevent Automatic Power Down

How to: Suspend the Device

Managing Variables, Stacks, and Heaps on Mobile Devices

Memory and Power Management

Memory Status and Information

System Out of Memory Dialog Box

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