C++ (Cpp) NtGetDevicePowerState示例

示例#1

文件： power.c 项目： Moteesh/reactos

/*
 * @implemented
 */
BOOL
WINAPI
GetDevicePowerState(IN HANDLE hDevice,
                    OUT BOOL *pfOn)
{
    DEVICE_POWER_STATE DevicePowerState;
    NTSTATUS Status;

    Status = NtGetDevicePowerState(hDevice, &DevicePowerState);
    if (NT_SUCCESS(Status))
    {
        *pfOn = (DevicePowerState == PowerDeviceUnspecified) ||
                (DevicePowerState == PowerDeviceD0);
        return TRUE;
    }

    BaseSetLastNTError(Status);
    return FALSE;
}

示例#2

文件： power.c 项目： farp90/nativecmd

/*
 * @implemented
 */
BOOL
WINAPI
GetDevicePowerState(HANDLE hDevice, BOOL *pfOn)
{
    DEVICE_POWER_STATE DevicePowerState;
    NTSTATUS Status;

    Status = NtGetDevicePowerState(hDevice, &DevicePowerState);

    if (NT_SUCCESS(Status))
    {
        if ((DevicePowerState != PowerDeviceUnspecified) &&
            (DevicePowerState != PowerDeviceD0))
            *pfOn = FALSE;
        else
            *pfOn = TRUE;

        return TRUE;
    }

    SetLastErrorByStatus(Status);
    return FALSE;
}