DOT11EXTIHV_INIT_SERVICE callback function (wlanihv.h)

Important  The Native 802.11 Wireless LAN interface is deprecated in Windows 10 and later. Please use the WLAN Device Driver Interface (WDI) instead. For more information about WDI, see WLAN Universal Windows driver model.

 

The operating system calls the Dot11ExtIhvInitService function to initialize the IHV Extensions DLL as well as the API interface between the operating system and the DLL.

Syntax

DOT11EXTIHV_INIT_SERVICE Dot11extihvInitService;

DWORD Dot11extihvInitService(
  [in]  DWORD dwVerNumUsed,
  [in]  PDOT11EXT_APIS pDot11ExtAPI,
        LPVOID pvReserved,
  [out] PDOT11EXT_IHV_HANDLERS pDot11IHVHandlers
)
{...}

Parameters

[in] dwVerNumUsed

The interface version used by the operating system. The value of this parameter must be between the ranges of version numbers returned in the pDot11IHVVersionInfo parameter of the Dot11ExtIhvGetVersionInfo IHV Handler function.

[in] pDot11ExtAPI

A pointer to a DOT11EXT_APIS structure, which contains the addresses of the IHV Extensibility functions that are supported by the operating system. The operating system formats this parameter with the function addresses before making the call to the Dot11ExtIhvInitService function.

pvReserved

This parameter is reserved for use by the operating system.

[out] pDot11IHVHandlers

A pointer to a DOT11EXT_IHV_HANDLERS structure, which contains the addresses of the IHV Handler functions supported by the IHV Extensions DLL. The DLL formats this parameter with the function addresses before returning from the call to the Dot11ExtIhvInitService function.

Return value

If the call succeeds, the function returns ERROR_SUCCESS. Otherwise, it returns an error code defined in Winerror.h.

Remarks

The operating system calls the Dot11ExtIhvInitService function immediately after the call to the Dot11ExtIhvGetVersionInfo function. When called, Dot11ExtIhvInitService must initialize the IHV Extensions DLL as necessary. When the function returns, the DLL must be prepared to accept additional calls to the IHV Handler function.

Unlike how it treats other IHV Extension and Handler functions whose addresses are resolved through the pDot11IHVHandlers parameter, the operating system resolves the address of the Dot11ExtIhvInitService function by calling the GetProcAddress function. As a result, the developer of the IHV Extensions DLL must follow these guidelines.

• The DLL must implement a function named Dot11ExtIhvInitService, which has the format that is described in this topic.
• The EXPORTS statement of the source module-definition (.def) file, which is used to build the IHV Extensions DLL, must contain a function name entry for the Dot11ExtIhvInitService function.

For more information about GetProcAddress, refer to the Microsoft Windows SDK documentation.

Requirements

Requirement	Value
Minimum supported client	Available in Windows Vista and later versions of the Windows operating systems.
Target Platform	Desktop
Header	wlanihv.h (include Wlanihv.h)

See also

DOT11EXT_APIS

DOT11EXT_IHV_HANDLERS

Dot11ExtIhvGetVersionInfo