to LiChaoHui：
给我一个txyqbf_Gxx@163.com
其实没什么可以保留的，我就贴一个我写得吧（SDI）：
exe 调用dll 中窗体的例子，sdi 和 mdi 基本上一样:
DLL 部分：
{****************************************************************}
{ }
{ Project: UDllTest }
{ Copyright(c) 2003, 2005 }
{ Unit for UDllTest }
{ Create : 2003-01-05 by 林红卫 }
{ }
{****************************************************************}
library UDllTest;
uses
SysUtils,
Forms,
Messages,
Windows,
Classes,
UFrmTestForm1 in 'UFrmTestForm1.pas' {Form1},
UFrmTestForm2 in 'UFrmTestForm2.pas' {Form2};
var
DLLApp: TApplication;
DLLScreen: TScreen;
TheForm: TForm;
theClass: TPersistentClass;
procedure RunDLL(DLLName, FormName, FormCaption: string;
APP: TApplication; SC: TScreen) stdcall;
begin
Application := App;
Screen := sc;
RegisterClasses([TForm1, TForm2]);
theClass := GetClass('T' + FormName);
if theClass.InheritsFrom(TForm) and (theClass <> nil) then
begin
TheForm := TForm(theClass.Create).Create(Application);
TheForm.Caption := FormCaption;
TheForm.Show;
end;
end;
procedure DLLUnloadProc(Reason: Integer);
begin
if Reason = DLL_PROCESS_DETACH then
begin
Application := DLLApp; //恢复
Screen := DLLScreen;
FreeAndNil(TheForm);
FreeAndNil(theClass); // 卸载时释放资源
end;
end;
exports
RunDLL;
begin
DLLApp := Application; //保存 DLL 中初始的 Application 对象
DLLScreen := Screen;
DLLProc := @DLLUnloadProc; //保证 DLL 卸载时恢复原来的 Application
end.
这是dpr 你加入form1,form2 就行啦！
exe 的dll 调用部分：
{****************************************************************}
{ }
{ Project: DllDebug }
{ Copyright(c) 2003, 2005 }
{ Unit for UCommonUnit }
{ Create : 2003-01-05 by 林红卫 }
{ }
{****************************************************************}
unit UCommonUnit;
interface
uses
Windows,
SysUtils,
Forms;
type
TRunDLL = procedure(DLLName, FormName, FormCaption: string;
Application: TApplication; Screen: TScreen) stdcall;
procedure RunDLLForm(DLLName, FormName, FormCaption: string;
APP: TApplication; SC: TScreen) stdcall;
implementation
procedure RunDLLForm(DLLName, FormName, FormCaption: string;
APP: TApplication; SC: TScreen) stdcall;
var
GetDllHWND: HWND;
RunDLL: TRunDLL;
begin
GetDllHWND := LoadLibrary(PChar(DllName));
if GetDllHWND < 32 then
begin
MessageBox(0, '没有找到附带DLL文件，请确认程序是否完整！',
'加载DLL失败', MB_OK);
Exit;
end;
@RunDLL := GetProcAddress(GetDllHWND, 'RunDLL');
if @RunDLL <> nil then
begin
try
RunDLL(UpperCase(Trim(DLLName)), UpperCase(Trim(FormName)),
FormCaption, APP, SC);
except
raise Exception.Create('T' + FormName + '不存在');
end;
end;
end;
end.
dll 的Form Name 可以从Exe 传入。
