PureBasic Forums - English

Hi

Do you know if there is a method that is called when the dll is first loaded where I could do some initialization? I would like to load some Chilkat tools and I thought it would be best just to do them once and not on every request. I am assuming that one the dll is loaded it stays in memory.

Thanks,
simon

Why yes. Yes there is! Use the normal DLL procedure of 'AttachProcess()' to initialize globally. I use it to open and read html files as well as setup database connections.

I use the ISAPI procedure 'TerminateExtension()' to clean up.

Hi Rich

I was just about to reply to myself because I discovered the AttachProcess discussion in the PB docs then I read your response. Thanks for confirming my discovery.

I do have a question though. I want to populate a structure with several Chilkat objects so I assume I should declare the structure in the AttachProcess procedure as Global so I can access it from the HttpExtensionProc() procedure.

Simon

Anytime!!

I do have a question though. I want to populate a structure with several Chilkat objects so I assume I should declare the structure in the AttachProcess procedure as Global so I can access it from the HttpExtensionProc() procedure.

Simon

Exactly! You can also declare Globals at the beginning of your DLL as well, prior to the procedures.

Hi

I am attempting to use the ChilKat http library in my ISAPI extension but I always get an error on ckHttp::ckCreate() method. I need the Chilkat software because I have to issue an HTTP post command over SSL to get some data that will be returned from the dll. My code works perfectly if I compile everything as a plane console application but once I convert it to a shared dll with the initilization code in the AttachProcess method I get and error on Chilkat ckCreate() method. All the code prior to this works fine. So I am wondering whether it is possible to include their code in my dll.

Thanks,
Simon

I am not familiar with the specifics around ChilKat, but you can certainly utilize static or dynamic libraries, just as you would in a console application.

Hi

I found the problem with Chilkat. They are using modules and the code that initializes the Global variables is not contained in a procedure so for DLLs it never gets executed. So I moved the global declarations into a new procedure called ckInitGlobals() and call this procedure from the AttachProcess() method and everything works just fine.

Hi

I contacted Chilkat and they are going to change the way they structure their Purebasic modules so they will work with an exe or a shared dll. They said it should be done in several days.

Simon