你可以通过以下这个例子解决你的问题 一.函数过程的写法:library FIRSTDLL;uses SysUtils, Classes;{$R *.RES} // 1.定义函数具体过程和输出接口方式 // -------------------------------- // 函数 1 // 功能:事数据3倍放大函数 // -------------------------------- function PenniesToSoins(SourceResult:Integer):Integer;stdCall; begin if SourceResult>0 then Result:=SourceResult*3 //结果存放于Result else Result:=SourceResult; end;exports PenniesToSoins; //2.函数输出口定义
end.== ==二.在DLL中创建Form ======================= 1.一步,创建DLL工程,及加入设置好的Formlibrary MGRPERSN; uses SysUtils, Classes, MGRPERFM in 'MGRPERFM.pas' {FormPERSON};//1.Form的代码(与一般的Form一样){$R *.RES} exports ShowPerSN;//2.函数输出口定义 begin end.2. 在DLL设定的Form的设置 =========================================== unit MGRPERFM;interfaceuses Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs, ComCtrls, ToolWin, ImgList;type TFormPERSON = class(TForm) private { Private declarations } public { Public declarations } end;//些处的变量不再用,给其改个地方,如下(改变之一) //var // FormPERSON: TFormPERSON;{ Declare the export function 宣布Form函数出口}//改变之二 function ShowPerSN(AHandle: THandle; ACaption: String):BOOL; StdCall;implementation{$R *.DFM} //函数据过程定义 function ShowPerSN(AHandle: THandle; ACaption: String):BOOL; var FormPERSON: TFormPERSON; //定义窗体类(上面的放到了此处) begin // Copy application handle to DLL's TApplication object //拷贝应用程式句柄给DLL的应有程式对象 Application.Handle := AHandle; FormPERSON := TFormPERSON.Create(Application);//创建控件TForm try FormPERSON.Caption := ACaption; FormPERSON.ShowModal;//显示此Form // Pass the date back in Result Result := False; //反回成功值 finally FormPERSON.Free; end; end;三.DLL中函数及窗体的调用 ========================== 1.调用方法一 -------------- implementation //在此的下方写明调用函数的DLL{$R *.DFM} //DLL内函数调用 function PenniesToSoins(SourceResult:Integer):Integer; StdCall external 'FIRSTDLL.DLL';........2.调用方法二 ============== type //在此创建一个函数类 // 1 ------------------------------- { First, define a procedural data type, this should reflect the procedure that is exported from the DLL. } { Create a new exception class to reflect a failed DLL load } TShowPerSN = function (AHandle: THandle; ACaption: String): BOOL; StdCall; EDLLLoadError = class(Exception);//同时分创建一个出错记录类 // 1 ------------------------------- TMAINCLTR = class(TForm) //这里不变,系统自动生成......procedure TMAINCLTR.ToolButton1Click(Sender: TObject); var //按钮的调用事件:调用过程 LibHandle: THandle; ShowPerSN: TShowPerSN; begin Application.Title:='人力资源管理系统DLL文件测试程式'; { Attempt to load the DLL 尝试装入DLL文件} LibHandle := LoadLibrary('MGRPERSN.DLL'); try if LibHandle = 0 then raise EDLLLoadError.Create('Unable to Load DLL(无法成功装入MGRPERSN.DLL)'); @ShowPerSN := GetProcAddress(LibHandle, 'ShowPerSN'); if not (@ShowPerSN = nil) then ShowPerSN(Application.Handle, '人事资料管理')//呼叫出窗体 else RaiseLastWin32Error; finally FreeLibrary(LibHandle); // Unload the DLL. end; end; ============== END ==================
一.函数过程的写法:library FIRSTDLL;uses
SysUtils,
Classes;{$R *.RES}
// 1.定义函数具体过程和输出接口方式
// --------------------------------
// 函数 1
// 功能:事数据3倍放大函数
// --------------------------------
function PenniesToSoins(SourceResult:Integer):Integer;stdCall;
begin
if SourceResult>0 then
Result:=SourceResult*3 //结果存放于Result
else
Result:=SourceResult;
end;exports
PenniesToSoins; //2.函数输出口定义
end.==
==二.在DLL中创建Form
=======================
1.一步,创建DLL工程,及加入设置好的Formlibrary MGRPERSN;
uses
SysUtils,
Classes,
MGRPERFM in 'MGRPERFM.pas' {FormPERSON};//1.Form的代码(与一般的Form一样){$R *.RES}
exports
ShowPerSN;//2.函数输出口定义
begin
end.2. 在DLL设定的Form的设置
===========================================
unit MGRPERFM;interfaceuses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
ComCtrls, ToolWin, ImgList;type
TFormPERSON = class(TForm)
private
{ Private declarations }
public
{ Public declarations }
end;//些处的变量不再用,给其改个地方,如下(改变之一)
//var
// FormPERSON: TFormPERSON;{ Declare the export function 宣布Form函数出口}//改变之二
function ShowPerSN(AHandle: THandle; ACaption: String):BOOL; StdCall;implementation{$R *.DFM}
//函数据过程定义
function ShowPerSN(AHandle: THandle; ACaption: String):BOOL;
var
FormPERSON: TFormPERSON; //定义窗体类(上面的放到了此处)
begin
// Copy application handle to DLL's TApplication object
//拷贝应用程式句柄给DLL的应有程式对象
Application.Handle := AHandle;
FormPERSON := TFormPERSON.Create(Application);//创建控件TForm
try
FormPERSON.Caption := ACaption;
FormPERSON.ShowModal;//显示此Form
// Pass the date back in Result
Result := False; //反回成功值
finally
FormPERSON.Free;
end;
end;三.DLL中函数及窗体的调用
==========================
1.调用方法一
--------------
implementation //在此的下方写明调用函数的DLL{$R *.DFM}
//DLL内函数调用
function PenniesToSoins(SourceResult:Integer):Integer;
StdCall external 'FIRSTDLL.DLL';........2.调用方法二
==============
type //在此创建一个函数类
// 1 -------------------------------
{ First, define a procedural data type, this should reflect the
procedure that is exported from the DLL. }
{ Create a new exception class to reflect a failed DLL load }
TShowPerSN = function (AHandle: THandle; ACaption: String): BOOL; StdCall;
EDLLLoadError = class(Exception);//同时分创建一个出错记录类
// 1 -------------------------------
TMAINCLTR = class(TForm) //这里不变,系统自动生成......procedure TMAINCLTR.ToolButton1Click(Sender: TObject);
var //按钮的调用事件:调用过程
LibHandle: THandle;
ShowPerSN: TShowPerSN;
begin
Application.Title:='人力资源管理系统DLL文件测试程式';
{ Attempt to load the DLL 尝试装入DLL文件}
LibHandle := LoadLibrary('MGRPERSN.DLL');
try
if LibHandle = 0 then
raise EDLLLoadError.Create('Unable to Load DLL(无法成功装入MGRPERSN.DLL)');
@ShowPerSN := GetProcAddress(LibHandle, 'ShowPerSN');
if not (@ShowPerSN = nil) then
ShowPerSN(Application.Handle, '人事资料管理')//呼叫出窗体
else
RaiseLastWin32Error;
finally
FreeLibrary(LibHandle); // Unload the DLL.
end;
end;
============== END ==================
else 象楼上的说的一样;