Title: Making a DLL with Delphi
Question: How I need to make a DLL ???
How I need to call it later ???
Simple, view the demo...
Answer:
//---------------------------------------------------------------------------
// Author : Digital Survivor [Esteban Rodrguez Nieto | Jos Plano]
// Email : plmad666@gmail.com | jose.plano@gmail.com
// Web site : www.ds-studios.com.ar
//---------------------------------------------------------------------------
The code below creates a simple DLL with one procedure called "Test DLL". The result of this procedure is a message box with some test. It's very simple and easy to make. Enjoy.
Library Test;
{ The Delphi 5 help recomend to add the ShareMem unit at the begining of the uses clauses to
improve the memory management and the export strings callings. }
Uses
ShareMem, SysUtils, Windows, Dialogs;
{$R *.RES}
Const
TestConst = 'This is a tests DLL.';
{ It's recomended to use the StdCall parameter for define the standar calling method.
This generally make our DLL compatible with any language...
Procedure TestDLL (TestStr : String); Stdcall
Begin
MessageDlg (TestConst + Chr (13) + Chr (13) + 'Your string is: ' + TestStr, mtInformation, [mbOk], 0);
End;
Exports TestDLL; // This is needed to make the funcion available later...
Begin
End.
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Add this line in your program to declare the procedure in the DLL. Remember to copy the DLL to the directory where the program is.
Procedure TestDLL (TestStr : Sting); Stdcall; External 'Test.dll';
Any comments are welcome. Enjoy. MAD666.