代码我贴上来,是从网上下的,但不知为什么关闭后不能彻底退出主程序如下:
unit MainUnit1;interfaceuses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
StdCtrls, ToolWin, ComCtrls, Menus;type
TMainForm = class(TForm)
MainMenu1: TMainMenu;
Start: TMenuItem;
procedure StartClick(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end; T_ProvaChild = procedure (ParentApplication: TApplication; ParentForm: TForm); stdcall;var
MainForm: TMainForm;implementation{$R *.DFM}procedure TMainForm.StartClick(Sender: TObject);
var
DllHandle: THandle;
ProcAddr: FarProc;
ProvaChild: T_ProvaChild;
begin
DllHandle := LoadLibrary('ProjectDll');
ProcAddr := GetProcAddress(DllHandle, 'ProvaChild');
if ProcAddr <> nil then
begin
ProvaChild := ProcAddr;
ProvaChild(Application,Self);
end;
end;end.
DLL程序:library ProjectDll;{ 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
Windows,
Messages,
SysUtils,
Classes,
Graphics,
Controls,
Forms,
Dialogs,
UnitDll in 'UnitDll.pas' {Form1};procedure ProvaChild(ParentApplication: TApplication; ParentForm: TForm); export; stdcall;
var
Form1: TForm1;
DllProc: Pointer; { Called whenever DLL entry point is called }begin
Application:=ParentApplication; Form1:=TForm1.Create(ParentForm);
Form1.MyParentForm:=ParentForm;
Form1.MyParentApplication:=ParentApplication;
// windows.SetParent(Form1.Handle,ParentForm.Handle);
// Form1.FormStyle:=fsMDIChild;
Form1.Show;
end;procedure DLLUnloadProc(Reason: Integer); register;
begin
if Reason = DLL_PROCESS_DETACH then Application:=DllApplication;
end;exports
ProvaChild;begin
DllApplication:=Application;
DLLProc := @DLLUnloadProc;
end.
unit UnitDll;interfaceuses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs;type
TForm1 = class(TForm)
procedure FormClose(Sender: TObject; var Action: TCloseAction);
procedure FormDestroy(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
MyParentForm: TForm;
MyParentApplication: TApplication;
end;var
DllApplication: TApplication;implementation{$R *.DFM}procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
Action:=caFree;
end;procedure TForm1.FormDestroy(Sender: TObject);
begin
// Application:=DllApplication;
end;end.
unit MainUnit1;interfaceuses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
StdCtrls, ToolWin, ComCtrls, Menus;type
TMainForm = class(TForm)
MainMenu1: TMainMenu;
Start: TMenuItem;
procedure StartClick(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end; T_ProvaChild = procedure (ParentApplication: TApplication; ParentForm: TForm); stdcall;var
MainForm: TMainForm;implementation{$R *.DFM}procedure TMainForm.StartClick(Sender: TObject);
var
DllHandle: THandle;
ProcAddr: FarProc;
ProvaChild: T_ProvaChild;
begin
DllHandle := LoadLibrary('ProjectDll');
ProcAddr := GetProcAddress(DllHandle, 'ProvaChild');
if ProcAddr <> nil then
begin
ProvaChild := ProcAddr;
ProvaChild(Application,Self);
end;
end;end.
DLL程序:library ProjectDll;{ 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
Windows,
Messages,
SysUtils,
Classes,
Graphics,
Controls,
Forms,
Dialogs,
UnitDll in 'UnitDll.pas' {Form1};procedure ProvaChild(ParentApplication: TApplication; ParentForm: TForm); export; stdcall;
var
Form1: TForm1;
DllProc: Pointer; { Called whenever DLL entry point is called }begin
Application:=ParentApplication; Form1:=TForm1.Create(ParentForm);
Form1.MyParentForm:=ParentForm;
Form1.MyParentApplication:=ParentApplication;
// windows.SetParent(Form1.Handle,ParentForm.Handle);
// Form1.FormStyle:=fsMDIChild;
Form1.Show;
end;procedure DLLUnloadProc(Reason: Integer); register;
begin
if Reason = DLL_PROCESS_DETACH then Application:=DllApplication;
end;exports
ProvaChild;begin
DllApplication:=Application;
DLLProc := @DLLUnloadProc;
end.
unit UnitDll;interfaceuses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs;type
TForm1 = class(TForm)
procedure FormClose(Sender: TObject; var Action: TCloseAction);
procedure FormDestroy(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
MyParentForm: TForm;
MyParentApplication: TApplication;
end;var
DllApplication: TApplication;implementation{$R *.DFM}procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
Action:=caFree;
end;procedure TForm1.FormDestroy(Sender: TObject);
begin
// Application:=DllApplication;
end;end.
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我试过这种方法,但还是不行