Inno Setup "could not call proc" from external dll

Asked Jun 19 '17 at 12:10

Active May 24 '18 at 11:08

Viewed 1,143 times

I'm trying to call a method from a dll file (C#) but I just get the "could not call proc" error message. Here's my code:

ddl file:

public class InnoEncryption
{
    [DllExport("EncryptText", CallingConvention = CallingConvention.StdCall)]
    public static string EncryptText([MarshalAs(UnmanagedType.LPStr)] string text)
    {
        return SecretKeyEncryption.EncryptText(text);
    }
}

Inno.iss

[Files]
Source: "dll\InnoEncryption.dll"; Flags: dontcopy
Source: "dll\RGiesecke.DllExport.dll"; Flags: dontcopy

[Code]
function EncryptText(text: String): String;
external 'EncryptText@files:InnoEncryption.dll,RGiesecke.DllExport.dll stdcall loadwithalteredsearchpath delayload';

procedure MyProc();
var encryptedText: String;
begin
encryptedText := EncryptText(PasswordEdit.Text);
end

edited Jun 19 '17 at 12:16

asked Jun 19 '17 at 12:10

TheLeprechaunsMadeMeDoIT

As mentioned in the answer to the duplicate question, you cannot "return" string from a function implemented in DLL. And it's twice as impossible, if the function is implemented in .NET/C#. That cannot work. – Martin Prikryl Jun 19 '17 at 12:23
1

Actually this is even closer duplicate: [Returning a string from a C# DLL with Unmanaged Exports to Inno Setup script](https://stackoverflow.com/q/20776847/850848). – Martin Prikryl Jun 19 '17 at 12:24
1

Great job, thanks! – TheLeprechaunsMadeMeDoIT Jun 19 '17 at 12:43

Inno Setup "could not call proc" from external dll

0 Answers0