使用DLL文件中封装的窗口[1]

library usedll;

{ important note about dll memory management: sharemem must be the
first unit in your library's uses clause and your project's (select
project-view source) uses clause if your dll exports any procedures or
functions that pass strings as parameters or function results. this
applies to all strings passed to and from your dll--even those that
are nested in records and classes. sharemem is the interface unit to
the borlndmm.dll shared memory manager, which must be deployed along
with your dll. to avoid using borlndmm.dll, pass string information
using pchar or shortstring parameters. }

uses
sysutils,
classes;

{$r *.res}

begin
end.

library usedll;

uses
sysutils,
classes,
form_unit in 'form_unit.pas' {form1};

{$r *.res}
exports
loadform index 1;
begin

end.

unit form_unit;

interface

uses
windows, messages, sysutils, variants, classes, graphics, controls, forms,
dialogs, stdctrls;

type
tform1 = class(tform)
label1: tlabel;
button1: tbutton;
procedure button1click(sender: tobject);
private
{ private declarations }
public
{ public declarations }
end;

var
form1: tform1;
applicationname: string;
procedure loadform(handle: thandle; appname: shortstring); export;

implementation

{$r *.dfm}
procedure loadform(handle: thandle; appname: shortstring);
begin
application.handle := handle;
applicationname := appname;
form1 := tform1.create(application);
try
form1.showmodal;
finally
form1.free;
end;
end;

procedure tform1.button1click(sender: tobject);
begin
self.close;
end;

end.

unit use_unit;

interface

uses
windows, messages, sysutils, variants, classes, graphics, controls, forms,
dialogs, stdctrls;
type
tform1 = class(tform)
button1: tbutton;
procedure button1click(sender: tobject);
private
{ private declarations }
public
{ public declarations }
end;

var
form1: tform1;
procedure loadform; external 'usedll.dll' index 1;
implementation

{$r *.dfm}

procedure tform1.button1click(sender: tobject);
begin
loadform;
end;

end.