Jorge
Tue Dec 20 15:17:31 CST 2005
Federico, this code is not working on this Dell Axim X50 device. The only
one that works is the GetDevicePower API. the others always return an error
code #2. Is there anything I might not understand about these devices or
this code?
Thanks,
Jorge
<pieri.federico@gmail.com> wrote in message
news:1135095371.330968.85880@o13g2000cwo.googlegroups.com...
>I use the following class:
>
> public class PowerAPI
> {
> [DllImport("coredll.dll", SetLastError = true)]
> public static extern int SetDevicePower(
> string pvDevice,
> int dwDeviceFlags,
> DevicePowerState DeviceState);
>
> [DllImport("coredll.dll", SetLastError = true)]
> public static extern int GetDevicePower(
> string pvDevice,
> int dwDeviceFlags,
> ref DevicePowerState DeviceState);
>
> [DllImport("coredll.dll", SetLastError = true)]
> public static extern int DevicePowerNotify(
> string device,
> DevicePowerState state,
> int flags);
>
> public enum DevicePowerState : int
> {
>
> Unspecified = -1,
>
> D0 = 0, // Full On: full power, full functionality
>
> D1, // Low Power On: fully functional at low
> power/performance
>
> D2, // Standby: partially powered with automatic wake
>
> D3, // Sleep: partially powered with device initiated wake
>
> D4, // Off: unpowered
>
> }
>
> public const int POWER_NAME = 0x00000001;
> }
>
> To turning on use the following code:
> int res1 = PowerAPI.DevicePowerNotify(deviceName,
> PowerAPI.DevicePowerState.D4, PowerAPI.POWER_NAME);
> int res2 = PowerAPI.SetDevicePower(deviceName, PowerAPI.POWER_NAME,
> PowerAPI.DevicePowerState.D0);
>
> to check the current device state use:
> PowerAPI.DevicePowerState deviceState = new
> PowerAPI.DevicePowerState();PowerAPI.GetDevicePower(deviceName,
> PowerAPI.POWER_NAME, ref deviceState);
>
> I use for Device name this string:
> "{98C5250D-C29A-4985-AE5F-AFE5367E5006}\\TIACXWLN1".
>
> HTH,
> Federico
>
>
> Jorge ha scritto:
>
>> Can any one give me an example for turning on and off WLAN on pocket pc?
>> in
>> particular, C# code would be most helpful.
>>
>> Thanks,
>> Jorge
>