delphi webbrowser与delphi互动

来源：互联网发布：云计算就业方向编辑：程序博客网时间：2024/06/09 18:04
http://www.cnblogs.com/del/archive/2009/02/27/993840.html
WebBrowser1.GoHome; //到浏览器默认主页WebBrowser1.Refresh; //刷新WebBrowser1.GoBack; //后退WebBrowser1.GoForward; //前进WebBrowser1.Navigate('...'); //打开指定页面WebBrowser1.Navigate('about:blank'); //打开空页面
--------------------------------------------------------------------------------//打开空页面, 并写入...
WebBrowser1.Navigate('about:<head><title>标题</title><body>页面内容</body>');
--------------------------------------------------------------------------------//读取网页脚本中的变量:
procedure TForm1.Button1Click(Sender: TObject);vars: string;i: Integer;begins := WebBrowser1.OleObject.document.Script.str;i := WebBrowser1.OleObject.document.Script.num;ShowMessage(s); //HelloShowMessage(IntToStr(i)); //99
//也可以这样读:s := WebBrowser1.OleObject.document.parentWindow.str;i := WebBrowser1.OleObject.document.parentWindow.num;ShowMessage(s); //HelloShowMessage(IntToStr(i)); //99end; --------------------------------------------------------------------------------//调用网页脚本中的函数:
procedure TForm1.Button1Click(Sender: TObject);beginWebBrowser1.OleObject.document.parentWindow.MB(); //HTML-Js
//如需指定脚本语言, 需要:WebBrowser1.OleObject.document.parentWindow.execScript('MB()','JavaScript'); //HTML-Jsend; --------------------------------------------------------------------------------//判断网页及内部框架网页是否全部下载完毕
procedure TForm1.WebBrowser1DocumentComplete(ASender: TObject;const pDisp: IDispatch; var URL: OleVariant);beginif WebBrowser1.Application = pDisp thenbeginText := '网页下载完毕！';end;end;--------------------------------------------------------------------------------//改变背景色或背景图片:WebBrowser1.OleObject.document.body.bgcolor := '#FF0000';WebBrowser1.OleObject.document.body.background := '...图片地址';
--------------------------------------------------------------------------------//操作有 ID 标签的对象:vars: string;begins := WebBrowser1.OleObject.document.getElementByID('span1').innerText;ShowMessage(s); //这是 span1 标签中的内容
//或者:s := WebBrowser1.OleObject.document.parentWindow.span1.innerText;ShowMessage(s); //这是 span1 标签中的内容
//隐藏它:WebBrowser1.OleObject.document.parentWindow.span1.style.display := 'none';end; --------------------------------------------------------------------------------//获取网页源代码vars: string;begins := WebBrowser1.OleObject.document.body.innerHTML; //body内的所有代码s := WebBrowser1.OleObject.document.body.outerHTML; //body内的所有代码, 包含body标签s := WebBrowser1.OleObject.document.documentElement.innerHTML; //html内的所有代码end;
//获取网页全部源代码uses ActiveX;varms: TMemoryStream;beginif not Assigned(WebBrowser1.Document) then Exit;ms := TMemoryStream.Create;(WebBrowser1.Document as IPersistStreamInit).Save(TStreamAdapter.Create(ms), True);ms.Position := 0;Memo1.Lines.LoadFromStream(ms, TEncoding.UTF8);// Memo1.Lines.LoadFromStream(ms, TEncoding.Default); {GB2312 等双字节}ms.Free;end;
--------------------------------------------------------------------------------//WebBrowser 中的右键菜单
//先要添加ApplicationEvents1,指定其Message事件
//屏蔽右键菜单procedure TForm1.ApplicationEvents1Message(var Msg: tagMSG; var Handled: Boolean);beginwith Msg dobeginif not IsChild(WebBrowser1.Handle, hWnd) then Exit;Handled := (message = WM_RBUTTONDOWN) or (message = WM_RBUTTONUP) or (message = WM_CONTEXTMENU);end;end;
//替换右键菜单procedure TForm1.ApplicationEvents1Message(var Msg: tagMSG; var Handled: Boolean);var mPoint: TPoint;beginif IsChild(WebBrowser1.Handle, Msg.Hwnd) and((Msg.Message = WM_RBUTTONDOWN) or (Msg.Message = WM_RBUTTONUP)) thenbeginGetCursorPos(mPoint); //得到光标位置PopupMenu1.Popup(mPoint.X, mPoint.Y); //弹出popupmenu1的菜单Handled:=True;end;end;
--------------------------------------------------------------------------------//新页面写入beginWebBrowser1.Navigate('about:blank');WebBrowser1.OleObject.Document.Writeln('ok');end;
//从流中写入:varms: TMemoryStream;beginms := TMemoryStream.Create;Memo1.Lines.SaveToStream(ms);ms.Position := 0;(WebBrowser1.Document as IPersistStreamInit).Load(TStreamAdapter.Create(ms));ms.Free;end;
//禁止提示脚步错误procedure TForm1.WebBrowser1NavigateComplete2(ASender: TObject;const pDisp: IDispatch; var URL: OleVariant);beginWebBrowser1.Silent := True;end;
//禁止弹出窗口procedure TForm1.WebBrowser1NewWindow2(ASender: TObject; var ppDisp: IDispatch;var Cancel: WordBool);beginCancel := True;end;