delphi webbrowser 经常使用的演示样本
var Form : IHTMLFormElement ; D:IHTMLDocument2 ; begin with WebBrowser1 do begin D := Document as IHTMLDocument2; Form := D.Forms.item( 'form1 ',0) as IHTMLFormElement; //form1为表单名 //title为表单中的文本框 (form.item( 'title ',0) as IHTMLElement).setAttribute( 'value ',s_title,0); (form.item( 'content ',0) as IHTMLElement).setAttribute( 'value ',edit1.text,0); (form.item( 'add ',0) as IHTMLElement).click;//add为button名称 end;
在delphi的WebBrowser中获取和设置Input表单值
var i:Integer; myole:oleVariant; begin myole := wb1.Document; for i := 0 to myole.all.length - 1 do begin if myole.all.item(i).tagName = 'INPUT' then begin mmo1.Lines.Add(myole.all.item(i).name); mmo1.Lines.Add(myole.all.item(i).value); end; end; end;
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); var s: string; i: Integer; begin s := WebBrowser1.OleObject.document.Script.str; i := WebBrowser1.OleObject.document.Script.num; ShowMessage(s); //Hello ShowMessage(IntToStr(i)); //99 //也能够这样读: s := WebBrowser1.OleObject.document.parentWindow.str; i := WebBrowser1.OleObject.document.parentWindow.num; ShowMessage(s); //Hello ShowMessage(IntToStr(i)); //99 end; 假如网页中有这种语句: <script> var str = "Hello"; i = 99; </script> -------------------------------------------------------------------------------- //调用网页脚本中的函数: procedure TForm1.Button1Click(Sender: TObject); begin WebBrowser1.OleObject.document.parentWindow.MB(); //HTML-Js //如需指定脚本语言, 须要: WebBrowser1.OleObject.document.parentWindow.execScript('MB()','JavaScript'); //HTML-Js end; 假如有这种脚本: <script> function MB(){ alert('HTML-Js'); } </script> -------------------------------------------------------------------------------- //推断网页及内部框架网页是否全部完成下载 procedure TForm1.WebBrowser1DocumentComplete(ASender: TObject; const pDisp: IDispatch; var URL: OleVariant); begin if WebBrowser1.Application = pDisp then begin Text := '网页完成下载!'; 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: var s: string; begin s := 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; 假如网页中有这种内容: <span id=span1>这是 span1 标签中的内容</span> -------------------------------------------------------------------------------- //获取网页源码 var s: string; begin s := WebBrowser1.OleObject.document.body.innerHTML; //body内的全部代码 s := WebBrowser1.OleObject.document.body.outerHTML; //body内的全部代码, 包括body标签 s := WebBrowser1.OleObject.document.documentElement.innerHTML; //html内的全部代码 end; -------------------------------------------------------------------------------- //WebBrowser 中的右键菜单 //先要加入ApplicationEvents1,指定其Message事件 //屏蔽右键菜单 procedure TForm1.ApplicationEvents1Message(var Msg: tagMSG; var Handled: Boolean); begin with Msg do begin if 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; begin if IsChild(WebBrowser1.Handle, Msg.Hwnd) and ((Msg.Message = WM_RBUTTONDOWN) or (Msg.Message = WM_RBUTTONUP)) then begin GetCursorPos(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 begin WebBrowser1.Navigate('about:blank'); WebBrowser1.OleObject.Document.Writeln('ok'); end;
自己主动登录
单个frames的输入 var o : Olevariant; begin o := WebBrowser.OleObject.document.all.item('LoginUserID',0); //找到登录username的输入框 o.value := 'TEST'; o := WebBrowser.oleobject.document.all.item('LoginPassword',0); //找到登录password的输入框 o.value := 'TEST' WebBrowser.oleobject.document.Forms.Item(0, 0).submit; //第一个表单提交 { o :=WebBrowser.oleobject.document.all.item('Login',0); //或者用指定表单名称提交 o.Click; //点击操作,对其他对象也可相同操作 } end; 多个frames的输入。FrameIndex为Frame的序号 var o : Olevariant; begin //找到登录username的输入框 o := WebBrowser.oleobject.document.documentelement.document.frames.item(FrameIndex).document.all.item('LoginUserID',0); o.value := 'TEST'; //找到登录password的输入框 o := WebBrowser.oleobject.document.documentelement.document.frames.item(FramIndex).document.all.item('LoginPassword',0); o.value := 'TEST' //第一个表单提交 WebBrowser.oleobject.document.documentelement.document.frames.item(FramIndex).document.Forms.Item(0, 0).submit; { //或者用指提交给定的格式名称 o :=WebBrowser.oleobject.document.documentelement.document.frames.item(FramIndex)..document.all.item('Login',0); o.Click; //点击操作。其它的目的还可以是相同的操作 } end;