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DLLCALL with C code example BulkSMS

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I can not program.  What I am trying to do is make a little AutoIt Desktop SMS sender that uses BulkSMS upstream.  BulkSMS provides services in the UK, USA, Europe and South Africa.  BulkSMS provides several options (a) create string and plug it into browser and send via HTTP, ugly but it works; (b) a DLL called smstxt32.dll which supports a few functions to do this in a typical Windows Desktop application.  They provide examples in C, PHP, Python etc.  I do not understand any of those.  I attach several files.

The BulkSMS home page is located here: www.BulkSMS.com

You can create a free account which allows five free credits to experiment with. So you can try to send the SMSes for free initially.

The file "BulkSMS Win32 API ver 1006a.zip" contains a .doc help file and the smstxt32.dll file.

 BulkSMS Win32 API ver 1006a.zip

The file BulkSMS.au3 is my attempt.


My BulkSMS.au3 attempts to create the required structs for use with the DLL.  I think I do manage, but do not understand anything about pointers.  Then I attempt to actually send the SMS using the following DLLCALL

Local $res = DllCall($__g_hDll_BulkSMS, _   ; name of DLL
            "BOOL", _                           ; return type
            "SMSAPI_sendsms", _                 ; function
            "LONG", _                               ; type1
            $gSMSAPI_NETWORKCONFIGURATION, _    ; param1
            "LONG", _                               ; type2
            $gSMSAPI_ACCOUNTINFO, _             ; param2
            "LONG", _                               ; type3
            $gSMSAPI_MESSAGEINFO, _             ; param3
            "LONG", _                               ; type4
            $gSMSAPI_RESPONSEINFO _             ; param4

This is based on the following example from the included help file, 

sms_sendsms Function

Use this function to send an SMS Text message to one or more mobile phones. The message can be sent immediately or scheduled for later delivery.


bool SMSAPI_sendsms(

According to the AutoIt Helpfile, there are conversions to comparable data types.  However, I do not see a "const" so I do not know what do with that.  Also, the C example shows the use of "long pointers." What would this be in AutoIt?

Thank you


BulkSMS Win32 API ver 1006a.zip


Edited by Skysnake
fixed typos


Why is the snake in the sky?

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Thank you so much for starting this topic I was looking for solution of this problem from a long period of time. Now I can well program my Bulk SMS API

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