calling c++ function

[madhutm]

i have one function in c++ thats connect with device via bluetooth.how can i call that function from autoit scripting?

[FireFox]

Hi,

Welcome to the autoit forum

I assume the function is in a library, so you have to use the DllCall function.

Br, FireFox.

[madhutm]

hi

ths for reply.ya i am calling that function using calldll.But that not working fine. The function return type is bool every it will give different integer number($dll[0]) but it will not connected to the device.is there any prerequires to calling this type of functions.

[madhutm]

The function is like this in c++

Control(int ctl, byte[] inData, int inLen, byte[] outData, ref int outLen)

[FireFox]

$ctl = 0
 
$tStruct = DllStructCreate("byte[256]") ;set your byte size here
DllStructSetData($tStruct, 1, ...
 
$inLen = 0
 
$tStruct2 = DllStructCreate("byte[256]") ;set your byte size here
 
$outLen = 0
 
DllCall("yourlib.dll", "bool", "Control", "int", $ctl, "struct*", $tStruct, "int", $inLen, "struct*", $tStruct2, "int*", $outLen)
 
;Control(int ctl, byte[] inData, int inLen, byte[] outData, ref int outLen)

Not sure if it's a struct*, or if it's a ptr (in this case you will use DllStructGetPtr with the 1st element).

Edit: And you will maybe need a struct for the int pointer (I'm pretty sure about it though).

Br, FireFox.

Edited February 5, 2014 by FireFox

[madhutm]

ths for reply.

i don't know about inside code in c++.same function i am calling from c# it works fine in c#.for testing purpose i need to call this function from autoit.

can you please tell me how to convert hex string to bytearray in Autoit. the above function second parameter i need to send this byte array only.

[FireFox]

Here you go:

$b = StringToBinary("0x123ABC....")

$tStruct = DllStructCreate("byte[" & BinaryLen($b) & "]")
DllStructSetData($tStruct, 1, $b)

Br, FireFox. Edited February 5, 2014 by FireFox

[madhutm]

hi

still it's giving different  integer number only. i am trying to connect blutooth device via com port.after taking com number i am conveting into hexstring then hexstring to bytearray.

ths

[madhutm]

this is how i am sending the function

  DllCall($dll,"bool:cdecl","BCRBT_Control","int", $ctl, "struct*", $tStruct, "int", $inLen, "struct*", $tStruct2, "int*", $outLen)

my paramer values are

        Local $input = GUICtrlRead($hInput)
        Local $dd =  StringFormat("%X",$input)
        Local $outLen = 0;
        Local $ctl =0xf901;
        $tStruct2 = DllStructCreate("byte[0xff]")
        $inLen =0;

        $b = StringToBinary($dd)
        $tStruct = DllStructCreate("byte[" & BinaryLen($ & "]")
        DllStructSetData($tStruct, 1, $
 

[FireFox]

i am trying to connect blutooth device via com port.

Have you tried to communicate directly with the COM port?

An example >here.

If your struct2 is a simple byte (not a byte array), call the parameter with BYTE and directly 0xFF.

Br, FireFox.

[madhutm]

hi,

that stringtobinary function not working properly.my port number is 30 after converting this to hexstring the value become 1E.while converting this value to binary that $b value gives  (0x313445)

but this is not binary format.

and struct2 is byte array.in c# i am declaring like this

byte[] = new byte[0xff];

how can i declare same like this in autoit.

and how can i find the tstruct lengh because i need to send this as third parameter to function.

ths

[FireFox]

that stringtobinary function not working properly.my port number is 30 after converting this to hexstring the value become 1E.while converting this value to binary that $b value gives  (0x313445)

but this is not binary format.

Binary is not 010101... it's hexadecimal in Binary variable type.

StringToBinary("0xABCDE") ;will be converted to binary type

and struct2 is byte array.in c# i am declaring like this

 

byte[] = new byte[0xff];

 

how can i declare same like this in autoit.

$tStruct2 = DllStructCreate("byte[" & 0xFF & "]") ;or 255

and how can i find the tstruct lengh because i need to send this as third parameter to function.

You haven't searched at all, take a look at the help file and you will find related function DllStructGetSize.

Br, FireFox.

[madhutm]

after createng $struct2 i was trying to print that value like this

Msgbox(0,"text",$tStruct)

it'will showing nothing if it is wrong how can i print $tsturct.

[FireFox]

Please read the helpfile :

Return Value

Success: a variable for use with DllStruct calls

And check the examples.

Br, FireFox.

[madhutm]

forgot above one for while this is my Bio_diconnect function it will not take any parameter.this one also not calling.

i am calling liki this

Local $ t1 = calldll($dll,"bool:cdecl","Bio_Disconnect")

msgbox(0,"txt",$t1[0])

this value give different integer numbers every time(not 0 or 1)

my question is there anything i need to setup working with bluetooth device or not.

[JohnOne]

Show how you successfully call the function from C#.

[madhutm]

i print the @error it i will gives the 0 value.so i call the function successfully right.

ths

[JohnOne]

Show how you successfully call the function from C#.

[madhutm]

Public bool Bio_Disconnect()

like this i call in c#

[madhutm]

sry

if(Bio_Disconnect){

............

}

this how exactly iam calling in c#