Enable and disable WiFi in Mobile 6

 

Note: If the following header file and library file are added to the program, the system still prompts that the file cannot be found or the external reference is incorrect, search for the added lib file and header file in the wm614 \ public directory, and copy them to: D: \ Program Files \ Windows Mobile 6 SDK \ pocketpc \ include \ armv4i \ and D: \ Program Files \ Windows Mobile 6 SDK \ pocketpc \ Lib \ armv4i \ directory.

 

NAdd header files and library files

# Include <wrlspwr. h>

# Pragma comment (Lib, "ossvcs. lib ")

NEnable and disable WiFi

ØClose

RDD * devicelist = NULL;

Getwirelessdevices (& devicelist, wireless_no_phone );

Changeradiostate (devicelist, 0, power_post_save );

Freedevicelist (pdevice );

ØOpen

RDD * devicelist = NULL;

Getwirelessdevices (& devicelist, wireless_no_phone );

Changeradiostate (devicelist, 1, power_post_save );

Freedevicelist (pdevice );

Since the implementation is relatively simple, let's look at the getwirelessdevices and changeradiostate functions. In fact, this is a simple translation of the above descriptions in Mobile 6 documents.

ØGetwirelessdevices

LFunction prototype

Hresult getwirelessdevices (

RDD **Pdevices,

DWORDDwflags

);

LParameter meaning

Pdevices: The address pointing to the device pointer in the linked list. If it succeeds, it will be a node of the RDD structure type.

Dwflags: Indicates which device to set or whether to set the desired status. The following are possible values and descriptions:

Flag	Value	Description
Wireless_get_desired	1	Returns the expected device status of the expected member variable in the RDD structure. This is what users want when wireless signals are enabled. For example, if you set the phone number in the Power Manager but disable the signal, the variable value is still 1. however, the actual dwstate is still 0. if you are only interested in the current status of the device, do not pass this parameter and do not desire to return meaningful values in the expected member variables.
Wireless_no_power_man	2	Remove wireless devices with power management from the list
Wireless_no_phone	4	No phone device in the returned list

 

LReturn Value

Value	Description
S_ OK	The wireless device status is successfully set.
E_fail	Failed to specify
S_false	Insufficient memory

ØChangeradiostate

LFunction prototype

HRESULT ChangeRadioState(

  RDD *pDev,

  DWORD dwState

  SAVEACTION sa

);

LParameter meaning

Pdev: Specify devices in the linked list of wireless devices

Dwstate: Specifies the power status to be set. The following values are possible:

Status	Value	Description
Off	0	Power off wireless devices
On	1	Power on wireless devices
Discoverable	2	Set wireless devices to be discovered by other Bluetooth devices

 

SA: Specifies how the desired status is updated in the registry. The following enumerated values are possible:

typedef enum _SAVEACTION {

    POWER_DONT_SAVE = 0,

    POWER_PRE_SAVE,

    POWER_POST_SAVE,

} SAVEACTION;

Value	Description
Power_dont_save	When the RF status changes, it will not be updated
Power_pre_save	Regardless of how the RF status changes, the preservation of the RF status prevails over the change of the RF status.
Power_post_save	No matter how the RF status changes, the new status is saved as the user-specified status.

 

LReturn Value

Value	Description
S_ OK	RF status set successfully
E_fail	RF status not changed
S_false	The RF status has been set to the desired status