DllCall - to my dll function - returns blank or zero only. - (Moved)

[IndianSage]

I created dll with one function _add(no1 as integer, no2 as integer) as Integer in FreeBasic, vb.net and c#.net. Used the same to  get the return values but instead i get back only

blank(With FreeBasic dll) or zero (Vb.net and C#).

Code is as follows: (Run environment is Windows 7 SP1 -dot net framework - above 4.5) 

#include <MsgBoxConstants.au3>
;Local $hDLL = DllOpen("E\CV-Dell-1\autoit3\clsAddMul.dll")
;Local $hDLL = DllOpen(@ScriptDir & "\clsAddMul.dll")
;Local $hDLL = DllOpen(@ScriptDir & "\clsClass2.dll")
Local $hDLL = DllOpen(@ScriptDir & "\Math1.dll")

Local $aResult = 555

;$aResult = DllCall(@ScriptDir & "\Math1.dll", "int", "_add", "int", 7, "int", 😎
$aResult = DllCall($hDLL, "Int", "_add", "Int", 7, "Int", 😎
$aResult = DllCall($hDLL, "int", "_add", "int", 7, "int", 😎
DllClose($hDLL)
MsgBox (0, "Result", "Total = " & $aResult)

;MsgBox (0, "Result2", "Total2 = " & DllCall($hDLL, "Int", "_add", "Int", 7, "Int", 8))
 

Whats wrong here? 

I am not sure I can ask such help here or not.

If not allowed, forgive me. I am first time participating and new to this.

Thanks

 

 

[IndianSage]

Sorry the call line is showing wrong -It should be read as:

$aResult = DllCall($hDLL, "Int", "_add", "Int", 7, "Int", 8

Also note I have tried with examples given for kernel32.dll, user32.dll - they work fine.

 

 

[jchd]

$aResult is an array. Please read help.

[Melba23]

Moved to the appropriate forum, as the Developer General Discussion forum very clearly states:

Quote

General development and scripting discussions. If it's super geeky and you don't know where to put it - it's probably here.

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Do not create AutoIt-related topics here, use the AutoIt General Help and Support or AutoIt Technical Discussion forums.

Moderation Team