Units to DLLs

[DjangMan]

I saw in a previous related post that some develpers convert their units to DLLs once they are finished developing.

My question is, is what's involved? Can I use conditional defines to make and use DLLs or Units at my leisure?

DjangMan

 

[Sisto]

--------------------------------------------
Here is how I convert my units to DLL’s
--------------------------------------------
Unit RsrFMgmt;
Interface
uses
ShareMem,
SysUtils;

function Func1(Var p1,p2,p3 : String) : Boolean;
function Func2(a,b : Integer; Var c,d : Integer) : boolean;

Implementation

function Func1(Var p1,p2,p3 : String) : Boolean;
begin
.
.
.
end;

function Func2(a,b : Integer; Var c,d : Integer) : boolean;
begin
.
.
.
end;

end.

-------------------------------------------------------------------
Converting the above unit to a DLL is as follows:
-------------------------------------------------------------------

library RsrFMgmt;
uses
ShareMem,
SysUtils;

function Func1(Var p1,p2,p3 : String) : Boolean; Export;
begin
.
.
.
end;

function Func2(a,b : Integer; Var c,d : Integer) : boolean; Export;
begin
.
.
.
end;

Exports Func1 Index 1,
Func2 Index 2;

begin
end.

---------------------------------------------
Store your compiled DLL in the
Windows system directory.

A new unit needs to be written to access your DLL’s within your program.
---------------------------------------------
Unit UsingDLLs;
Interface
uses
ShareMem,
SysUtils;


function Func1(Var p1,p2,p3 : String) : Boolean;
function Func2(a,b : Integer; Var c,d : Integer) : boolean;

Implementation

function Func1(Var p1,p2,p3 : string) : boolean; External 'RsrFMgmt' Index 1;
function Func2(a,b : integer; var c,d : integer) : boolean; External 'RsrFMgmt' Index 2;
end.

---------------------------------------------------------------
Hope this helps. Good luck!
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