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Trying to get DLLCALL to work

 
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DLLConfused
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PostPosted: Wed Sep 02, 2009 10:28 pm    Post subject: Trying to get DLLCALL to work Reply with quote
I have been trying to figure out the DLLCALL command with no luck. Per the help file it says this can be a DLL of EXE.

Quote:

The DLL or EXE file name followed by a backslash and the name of the function.


So I created a simple function and compiled it into an EXE.

Code:

; Compiled code to testDLLCALL.exe
DLL_Add(X,Y){

value := X + Y

return, value
}


Then a second AHK file that would try and call that function via DLLCALL. Saved to the same location as the EXE my function is in.

Code:

#NoEnv
SendMode Input
SetWorkingDir %A_ScriptDir%

Result := DLLCALL("testDLLCALL.exe\DLL_Add", "Int", 3, "Int", 4)

msgbox %ErrorLevel%`n%Result%


I also tried it with a load library call as noted in the help file (I did nto expect this to work but figured I try it just in case)

Code:

#NoEnv
SendMode Input
SetWorkingDir %A_ScriptDir%

hModule := DllCall("LoadLibrary", "str", "testDLLCALL.exe")

Result := DLLCALL("testDLLCALL.exe\DLL_Add", "Int", 3, "Int", 4)

msgbox %ErrorLevel%`n%Result%

DllCall("FreeLibrary", "UInt", hModule)


My errorlevel is returning -4 saying its not finding the function. So It appears I am getting to the file just not the function.

Am I missing some Code in the EXE so it knows the function is there? Is it better to code the EXE/DLL in C, or C++, or another language? Not sure if that would make any difference.
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DLLConfused
Guest
PostPosted: Wed Sep 02, 2009 10:35 pm    Post subject: Reply with quote
I just thought of this. Because I have it as an EXE wouold I need to have the EXE running?
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YMP



Joined: 23 Dec 2006
Posts: 418
Location: Russia
PostPosted: Thu Sep 03, 2009 12:38 am    Post subject: Reply with quote
The function should be exported, i.e. be in an exe or dll export table, which is obviously not present in AHK exe's. So, yes, C or C++ would be better.
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