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[rounin]

File 'hook.dpr' is source of the DLL.
You need open it using "Open project" and compile it.
The result will be hook.dll

The main application should contain the following code:
(When the main application installs global hook,
the hook.dll will be loaded on every application)

Código Delphi [-]
 
// uses HookDef
function InstallHook: PNConTildeData; stdcall; external 'hook.dll';
function UninstallHook: Boolean; stdcall; external 'hook.dll';
 
procedure TForm1.FormCreate(Sender: TObject);
begin
  {FHookData := }InstallHook; 
end;
 
procedure TForm1.FormDestroy(Sender: TObject);
begin
  UninstallHook; 
end;

I have attached the working example.