Article View: borland.public.delphi.language.objectpascal
Article #32457Problems calling a function from a DLL file
From: Adams
Date: Sat, 23 Nov 2002 23:23
Date: Sat, 23 Nov 2002 23:23
42 lines
2280 bytes
2280 bytes
Hi, am having a problem with calling a function located in a DLL file,
Here are the declaration in C:
extern "C" BOOL __declspec(dllexport)StartLinkFile(CString
strFile,CString port);
and i got a working VC++ example that uses the DLL and that function:
/**** parameter 1 *****/
CString strPath = "Sample.txt";
/**** parameter 2 *****/
CString strPort[4] = {"COM1","COM2","COM3","COM4"};
CString port = strPort[0];
/**** dllexport function define ****/
typedef BOOL(StartLinkFileProc)(CString,CString);
HINSTANCE hInstance;
StartLinkFileProc* StartLinkFile;
/**** Get DLL Handle, Save Resource ****/
HINSTANCE hInstResource = AfxGetResourceHandle();
VERIFY(hInstance = ::LoadLibrary("Download.dll"));
AfxSetResourceHandle(hInstance);
/**** Get dllexport function ****/
VERIFY(StartLinkFile =
(StartLinkFileProc*)::GetProcAddress((HMODULE)hInstance,"StartLinkFile"));
/**** use dllexport ****/
StartLinkFile(strPath,port);
/**** restore resource ****/
AfxSetResourceHandle(hInstResource);
I tried porting this code into Delphi but was unable to! anybody can help?
Regards
LR
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 109d30,4439140b96f8435d,start X-Google-Attributes: gid109d30,public X-Google-ArrivalTime: 2002-11-23 05:46:22 PST Date: Sat, 23 Nov 2002 15:23:16 -0800 From: Adams <lonereck@hotmail.com> User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.1) Gecko/20020826 X-Accept-Language: en-us, en MIME-Version: 1.0 Newsgroups: borland.public.delphi.language.objectpascal Subject: Problems calling a function from a DLL file Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit NNTP-Posting-Host: 212.118.5.212 Message-ID: <3ddf8143@newsgroups.borland.com> X-Trace: newsgroups.borland.com 1038057795 212.118.5.212 (23 Nov 2002 05:23:15 -0800) Lines: 43 Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!sn-xit-02!sn-xit-05!sn-xit-06!sn-xit-08!supernews.com!news-out.visi.com!hermes.visi.com!out.nntp.be!propagator-SanJose!news-in-sanjose!in.nntp.be!caladan.arrakis.es!newsgroups.borland.com!not-for-mail