marcel-slip
26th February 2009 09:36 UTC

Call Function from DLL witch returns True or False
Hello,

I have a library. Dll file that has the function of checking the key in the registry. Library returns the value true or false. Can this somehow be supported by NSIS?
Here is an code with InstallShield:

prototype BOOL werk.werk();
prototype NUMBER werk.WriteToReg(POINTER, POINTER, POINTER);
prototype NUMBER werk.CreateRegKey();

function BOOL VerifySerial()
STRING szFileName;
　　NUMBER nResult;
　　BOOL bVerified;
begin　
　 szFileName = SUPPORTDIR ^ "some.dll";

　 nResult = UseDLL(szFileName);
　 if (nResult=0) then
　　　bVerified = some.some();
　 else　　　　　　　　　
　 　bVerified = FALSE;
　 　MessageBox(@MSG_DLLERROR, INFORMATION);
　 endif;
　 nResult = UnUseDLL(szFileName);
　
　 return bVerified;
end;

Afrow UK
26th February 2009 11:12 UTC

Call it with the System plug-in.

Edit: Or convert it to an NSIS plug-in.
Or write the code in NSIS.

Stu

marcel-slip
26th February 2009 12:01 UTC

Thank you for your reply.
I don't know how to do this. I do not have access to the source libraries and at the worst I have enough time to perform;)
Any example?

Afrow UK
26th February 2009 12:11 UTC

There are many many examples of the 3 options I have outlined. You will find them here, on the Wiki and with your NSIS installation.

Stu

marcel-slip
27th February 2009 09:07 UTC

Hello


I'm not as good with nsis-a. I tried to do is this:

Function some
SetOutPath c:\temp
File test.dll
System::Call 'test.dll::work() b(r0)'
DetailPrint 'Path: "$0"'
Dumpstate::debug ;test variable
FunctionEnd

---

Anders
27th February 2009 09:18 UTC

there is no such thing as b, you need to read the system plugin readme, you can't just make up types!

the windows BOOL type is 4 bytes, use i
the c++ bool type is 1 byte

marcel-slip
27th February 2009 10:22 UTC

Thank you very much for your help.
The following function works:
Quote: