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cbao

A strange dllcall, seek expert help!

1 post in this topic

#1 ·  Posted (edited)

This is a Taking of Bluetooth (btfunc.dll) BT_InquireDevices function code, you can always display the returned array does not, appeal to expert guidance, thank you!

Here is the function of the API Description:

This function inquires nearby Bluetooth devices or gets paired devices from BlueSoleil’s history records.

DWORD BT_InquireDevices(

/* [in] */ UCHAR ucInqMode,

/* [in] */ UCHAR ucInqTimeLen,

/* [in, out] */ DWORD* lpDevsListLength,

/* [out] */ PBLUETOOTH_DEVICE_INFO pDevsList,

);

Returns array:

typedef struct _BLUETOOTH_DEVICE_INFO {

DWORD dwSize;

BYTE address[DEVICE_ADDRESS_LENGTH];

BYTE classOfDevice[DEVICE_CLASS_LENGTH];

CHAR szName[MAX_DEVICE_NAME_LENGTH];

BOOL bPaired;

} BLUETOOTH_DEVICE_INFO, *PBLUETOOTH_DEVICE_INFO;

---------------------------------------------------------------------------------------------------------------

#Include <File.au3>

#Include <Array.au3>

Local $dllCallError[5] = [4, "BTSTATUS_SYSTEM_ERROR", "BTSTATUS_PARAMETER_ERROR", "BTSTATUS_BT_NOT_READY", "BTSTATUS_FAIL"]

Global const $DEVICE_ADDRESS_LENGTH = 6

Global const $DEVICE_CLASS_LENGTH = 3

Global const $MAX_DEVICE_NAME_LENGTH = 64

$handle = DllOpen("btfunc.dll")

$str = "DWORD;byte[" & $DEVICE_ADDRESS_LENGTH & "];byte[" & $DEVICE_CLASS_LENGTH & "];byte[" & $MAX_DEVICE_NAME_LENGTH & "];INT"

$struct_BLUETOOTH_DEVICE_INFO = DllStructCreate($str)

$lpDevsListLength = DllStructCreate("DWORD")

$dll = DllCall($handle,"dword:cdecl","BT_InquireDevices","byte","INQUIRY_GENERAL","byte",0x30,"long*",DllStructGetPtr($lpDevsListLength),"long*",DllStructGetPtr($struct_BLUETOOTH_DEVICE_INFO))

If @error then

Msgbox(0,"Error in Dll call", $dllCallError[@error])

Else

_arrayDisplay($dll,"BT_InquireDevices")

EndIf

------------------------------------------------------------------------------------------------------------

Sorry! I am a beginner AUTOIT from China, due to language problems, I do not know how to write source code box, please forgive me!

Edited by cbao

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