那位有关于ACTIVEX DLL的原代码,和调用它的代码最好一起贴出来!!
让大家互相学习学习!!!
让大家互相学习学习!!!
解决方案 »
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procedure TClPrn.EventSinkChanged(const EventSink: IUnknown);
begin
FEvents := EventSink as IClPrnEvents;
inherited EventSinkChanged(EventSink);
end;procedure TClPrn.Initialize;
begin
inherited Initialize;
OnActivate := ActivateEvent;
OnClick := ClickEvent;
OnCreate := CreateEvent;
OnDblClick := DblClickEvent;
OnDeactivate := DeactivateEvent;
OnDestroy := DestroyEvent;
OnKeyPress := KeyPressEvent;
OnPaint := PaintEvent;
end;function TClPrn.Get_Active: WordBool;
begin
Result := Active;
end;function TClPrn.Get_AlignDisabled: WordBool;
begin
Result := AlignDisabled;
end;function TClPrn.Get_AutoScroll: WordBool;
begin
Result := AutoScroll;
end;function TClPrn.Get_AutoSize: WordBool;
begin
Result := AutoSize;
end;function TClPrn.Get_AxBorderStyle: TxActiveFormBorderStyle;
begin
Result := Ord(AxBorderStyle);
end;function TClPrn.Get_Caption: WideString;
begin
Result := WideString(Caption);
end;function TClPrn.Get_Color: OLE_COLOR;
begin
Result := OLE_COLOR(Color);
end;function TClPrn.Get_Cursor: Smallint;
begin
Result := Smallint(Cursor);
end;function TClPrn.Get_DoubleBuffered: WordBool;
begin
Result := DoubleBuffered;
end;function TClPrn.Get_DropTarget: WordBool;
begin
Result := DropTarget;
end;function TClPrn.Get_Enabled: WordBool;
begin
Result := Enabled;
end;function TClPrn.Get_Font: IFontDisp;
begin
GetOleFont(Font, Result);
end;function TClPrn.Get_HelpFile: WideString;
begin
Result := WideString(HelpFile);
end;function TClPrn.Get_HelpKeyword: WideString;
begin
Result := WideString(HelpKeyword);
end;function TClPrn.Get_HelpType: TxHelpType;
begin
Result := Ord(HelpType);
end;function TClPrn.Get_KeyPreview: WordBool;
begin
Result := KeyPreview;
end;function TClPrn.Get_PixelsPerInch: Integer;
begin
Result := PixelsPerInch;
end;function TClPrn.Get_PrintScale: TxPrintScale;
begin
Result := Ord(PrintScale);
end;function TClPrn.Get_Scaled: WordBool;
begin
Result := Scaled;
end;function TClPrn.Get_Visible: WordBool;
begin
Result := Visible;
end;function TClPrn.Get_VisibleDockClientCount: Integer;
begin
Result := VisibleDockClientCount;
end;procedure TClPrn._Set_Font(var Value: IFontDisp);
begin
SetOleFont(Font, Value);
end;procedure TClPrn.ActivateEvent(Sender: TObject);
begin
if FEvents <> nil then FEvents.OnActivate;
end;procedure TClPrn.ClickEvent(Sender: TObject);
begin
if FEvents <> nil then FEvents.OnClick;
end;procedure TClPrn.CreateEvent(Sender: TObject);
begin
if FEvents <> nil then FEvents.OnCreate;
end;procedure TClPrn.DblClickEvent(Sender: TObject);
begin
if FEvents <> nil then FEvents.OnDblClick;
end;procedure TClPrn.DeactivateEvent(Sender: TObject);
begin
if FEvents <> nil then FEvents.OnDeactivate;
end;procedure TClPrn.DestroyEvent(Sender: TObject);
begin
if FEvents <> nil then FEvents.OnDestroy;
end;procedure TClPrn.KeyPressEvent(Sender: TObject; var Key: Char);
var
TempKey: Smallint;
begin
TempKey := Smallint(Key);
if FEvents <> nil then FEvents.OnKeyPress(TempKey);
Key := Char(TempKey);
end;procedure TClPrn.PaintEvent(Sender: TObject);
begin
if FEvents <> nil then FEvents.OnPaint;
end;procedure TClPrn.Set_AutoScroll(Value: WordBool);
begin
AutoScroll := Value;
end;procedure TClPrn.Set_AutoSize(Value: WordBool);
begin
AutoSize := Value;
end;procedure TClPrn.Set_AxBorderStyle(Value: TxActiveFormBorderStyle);
begin
AxBorderStyle := TActiveFormBorderStyle(Value);
end;procedure TClPrn.Set_Caption(const Value: WideString);
begin
Caption := TCaption(Value);
end;procedure TClPrn.Set_Color(Value: OLE_COLOR);
begin
Color := TColor(Value);
end;procedure TClPrn.Set_Cursor(Value: Smallint);
begin
Cursor := TCursor(Value);
end;procedure TClPrn.Set_DoubleBuffered(Value: WordBool);
begin
DoubleBuffered := Value;
end;procedure TClPrn.Set_DropTarget(Value: WordBool);
begin
DropTarget := Value;
end;procedure TClPrn.Set_Enabled(Value: WordBool);
begin
Enabled := Value;
end;procedure TClPrn.Set_Font(const Value: IFontDisp);
begin
SetOleFont(Font, Value);
end;procedure TClPrn.Set_HelpFile(const Value: WideString);
begin
HelpFile := String(Value);
end;procedure TClPrn.Set_HelpKeyword(const Value: WideString);
begin
HelpKeyword := String(Value);
end;procedure TClPrn.Set_HelpType(Value: TxHelpType);
begin
HelpType := THelpType(Value);
end;procedure TClPrn.Set_KeyPreview(Value: WordBool);
begin
KeyPreview := Value;
end;procedure TClPrn.Set_PixelsPerInch(Value: Integer);
begin
PixelsPerInch := Value;
end;procedure TClPrn.Set_PrintScale(Value: TxPrintScale);
begin
PrintScale := TPrintScale(Value);
end;procedure TClPrn.Set_Scaled(Value: WordBool);
begin
Scaled := Value;
end;procedure TClPrn.Set_Visible(Value: WordBool);
begin
Visible := Value;
end;procedure TClPrn.ClPrn(const Str: WideString);
var
TmpStr,Temp : String;
Sub : Integer;
begin
QRLabel_Year.Caption := copy(FormatDateTime('yyyymmdd',Now),1,4) + '年'
+ copy(FormatDateTime('yyyymmdd',Now),5,2) + '月'
+ copy(FormatDateTime('yyyymmdd',Now),7,2) + '日';
ListBox1.Items.Clear;
TmpStr := Str;
if TmpStr <> '' then
begin
Sub := pos('&',TmpStr);
while Sub > 0 do
begin
Temp := copy(TmpStr,1,Sub-1);
ListBox1.Items.Add(Temp);
TmpStr := copy(TmpStr,Sub + 1,Length(TmpStr)-Sub);
Sub := pos('&',TmpStr);
end;
if TmpStr <> '' then
begin
ListBox1.Items.Add(TmpStr);
end;
while ListBox1.Items.Count < 30 do
begin
ListBox1.Items.Add(' ');
end;
QRLabel_Cx.Caption := ListBox1.Items[0];
QRLabel_Sj.Caption := ListBox1.Items[1];
QRLabel_Ddzb.Caption := ListBox1.Items[2];
QRLabel_Ycr.Caption := ListBox1.Items[3];
QRLabel_Dw.Caption := ListBox1.Items[4];
QRLabel_Bddd.Caption := ListBox1.Items[5];
QRLabel_Kw.Caption := ListBox1.Items[6];
QRLabel_Cchour.Caption := ListBox1.Items[7];
QRLabel_Fhhour.Caption := ListBox1.Items[8];
QRLabel_Ccbs.Caption := ListBox1.Items[9];
QRLabel_Fhbs.Caption := ListBox1.Items[10];
QRLabel_Xslc.Caption := ListBox1.Items[11];
QRRichText_Ddsx.Lines.Add(ListBox1.Items[12]);
QRRichText_Bz.Lines.Add(ListBox1.Items[13]);
QRRichText_Jycs.Lines.Add(ListBox1.Items[14]);
QRRichText_Qz.Lines.Add(ListBox1.Items[15]);
end
else
begin
Application.MessageBox('读取数值错误,请重新录入','错误!',mb_ok+mb_iconstop);
Exit;
end;
try
QuickRep_Print.Print;
except
Application.MessageBox('打印出错!','错误提示!',mb_ok+mb_iconstop);
end;
end;initialization
TActiveFormFactory.Create(
ComServer,
TActiveFormControl,
TClPrn,
Class_ClPrn,
1,
'',
OLEMISC_SIMPLEFRAME or OLEMISC_ACTSLIKELABEL,
tmApartment);
end.
第一步:新建一个Activex Library,命名为PadoPage,然后再新建一个Active Server Object Class,命名为AdoPage,即建立了一个名为AdoPage的ASP组件,文件命名为Adopage.pas。 第二步:打开Type Library,新建一个方法Get_Page,然后在Get_Page加入一个参数Pconnandsgl,用于传递数据库连接语句和SQL语句,参数选择为BSTR类型。 第三步:新建一个DataModule,放入Adoconnection组件和AdoQuery组件,将Data Module命名为AdoDataModule。由于新建立的组件中的方法Get_Page要从DataModule中取得数据,所以需在Adopage.pas的Uses子句中加入AdoDataModule,然后声明一个数据模块的变量fadodm,同时加入Initialize和Destroy这两个方法,以便在ASP组作中生成数据模块。Adopage.pas具体代码如下所示:unit Adopage; interface uses ComObj, SysUtils, Classes, ActiveX, AspTlb, Pbasedata_TLB, StdVcl, AdoDataModule; //将AdoDataModule加入USE子句 type T Adopage = class(TASPObject, Ibasedata) private fadodm:TAdoDataModuleform; protected procedure OnEndPage; safecall; procedure OnStartPage(const AScriptingContext: IUnknown); safecall; procedure get_page(const pconnandsql: WideString); safecall; public procedure initialize;override; destructor destroy;override; end; implementation uses ComServ,forms; destructor Tadopage.destroy; begin inherited; fadodm.Destroy; end; procedure Tadopage.initialize; begin inherited; fadodm:=tadodmform.Create(forms.application); end; 第四步:建立通用的分页显示数据的方法get_page,具体代码如下: procedure Tadopage.get_page(const pconnandsql: WideString); var i,j,n:integer; connstr,sqlstr:widestring; rs:_recordset; cur_url:widestring; page_no:integer; begin //首先从传递过来的参数中分别取出连接串和SQL语句 pconnandsql:=uppercase(pconnandsql); i:=pos('CONNSTR',pconnandsql); j:=pos('SQLSTR',pconnandsql); if i=0 or j=0 then begin response.write('数据库连接串或SQL语句错误!'); abort; end; for n:=I+8 to j-1 do connstr:=connstr+pconnandsql[n]; for n:=j+7 to length(pconnandsql) do sqlstr:=sqlstr+pconnandsql[n]; //将取得的连接串和SQL语句分别赋给ADOconnection和ADOQuery fadodm.adoconnection1.connstring:=connstr; fadodm.adoquery1.sql.add(sqlstr); //以下为打开数据库并进行分页的过程 try fadodm.adoquery1.open; //打开数据库 rs:=fadodm.adoquery1.recordset; //取得当前打开页面的URL和页码 try if request.servervariable['url'].count>0 then cur_url:= request.servervariable.item['url']; if request.querystring['page_no'].count>0 then page_no:=request.querystring.item['page_no'] else page_no:=1; except end; rs.pagesize:=20; //每页设为20行 rs.AbsolutePage:=page_no; //页面定位 response.write('共'+inttostr(rs.pagecount)+'页& '); response.write('第'+inttostr(page_no)+'页& '); //对每个页码建立超链接 for i:=1 to rs.pagecount do response.write('<a href="'+cur_url+'?page_no='+inttostr(i)+'">' +inttostr(i)+'</a>'); //数据记录按表格显示 response.write('<table>'); //取得表格标题 response.write('<tr>'); for I:=0 to fadodm.adoquery1.fields.count-1 do response.write('<td>'+fadodm.adoquery1.fields[i].fieldname+'</td>'); response.write('</tr>'); j:=1 with fadodm.adoquery1 do while (not eof) and j<=rs.pagesize do begin response.write('<tr>'); //取得表格内容 for i:=1 to fields.count do response.write('<td>'+fields[i].asstring+'</td>'); response.write('</tr>'); next; end; response.write('</table>'); fadodm.adoquery1.close; except response.write('数据出错啦!'); end; end; 以上即为取得通用分页数据的过程,需要注意的是编译时部分函数会出错,只需在USES子句中加入sysutils、classes和adodb单元即可。
第五步:编译并注册adopage组件,即可在ASP代码中调用,调用示例如下: <% dim webpageobj set webpageobj=server.createobject("padopage.adopage") webpageobj.get_page("conn=provider=SQLOLEDB.1;presist security info=false; user id=sa;initical catalog=sale_data;data source=(local), sqlstr=selectfrom customer") %> 通过以上步骤,我们就顺利地利用Delphi开发出了具有分页功能的ASP组件了。