delphi webbrowser內存圖片到IMAGE

Question

誰可以給我個寫法 ...
一個button
一個webbrowser
一個image
按下button 把WEBROWSER的 認證碼圖片保存在內存 之後再IMAGE顯示出來圖片原始碼如下
<span style="font-size: 14px;">認證碼</span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                            <table>
                                <tr>
                                    <td>
                                        <table>
                                            <tr>
                                                <td>
                                                    <p class="agreeBtn">
                                                    &nbsp;&nbsp;
                                                </td>
                                                <td>
                                                    <div class='LBD_CaptchaDiv' style='width:228px; height: 44px;'>
            <div class='LBD_CaptchaImage' style='width:200px; height: 40px; '>
                <img id='signup_join_beanfun_signup_samplecaptcha_CaptchaImage' src='LanapCaptcha.aspx?get=image&amp;c=signup_join_beanfun_signup_samplecaptcha&amp;t=b2629cece2b74db4a8476c1489a68978&amp;s=RTU46AURGsmKAxaDrT91%2b%2bk5znR%2bk9tzri9SwrOQS8I%3d' alt='CAPTCHA code image' />
            </div><div class='LBD_CaptchaIcons'><a href='#' onclick='LBD_ReloadImage("signup_join_beanfun_signup_samplecaptcha_CaptchaImage");this.blur();return false;' title='重新取得'><img src='/TW/WebResource.axd?d=dCkrq-FWCLLZXD1ZhRiMuAWAYu8rbgsizziWE5SSuwYmrBuX2BYEZNYOlveDWlEYrlJEGNG9QM0HY2TtgOXbhH7B7wRuB4Z3DsgMKXOtuWyKMIAGEiqlmuG8b8r19KQB_fNMfLti9wRz35jIy92yvAEtsM01&amp;t=634848858400000000' alt='重新取得' /></a></div></div>
<input type="hidden" name="LBD_VCT_signup_join_beanfun_signup_samplecaptcha" id="LBD_VCT_signup_join_beanfun_signup_samplecaptcha" value="b2629cece2b74db4a8476c1489a68978" />求寫法

Answer 1

pic是图像idprocedure TfrmMain.DomImg2Image(wb:TWebBrowser);
var
  i:Integer;
  rang:IHTMLControlRange;
  s:string;
begin
  try
  s := (IHTMLDocument2(wb.Document).images.item('pic',EmptyParam) as IHTMLElement).getAttribute('src',0);
      rang:=((IHTMLDocument2(wb.Document).body as HTMLBody).createControlRange)as
        IHTMLControlRange;
      rang.add(IHTMLDocument2(wb.Document).images.item('pic',EmptyParam)as
        IHTMLControlElement);
      rang.execCommand('Copy',False,0);
      image1.Picture.Assign(ClipBoard);
  except
  end;
end;

Answer 2

ClipBoard 這個是什麼意思 我不太懂 剛學 DELPHI

Answer 3

SRC事要打原屎馬的SRC? 例如src='LanapsCaptcha.aspx? 這個?

Answer 4

我打成這樣
procedure TForm1.Button2Click(Sender: TObject);
var
i:Integer;
rang:IHTMLControlRange;
s:string;
begin
try
s := (IHTMLDocument2(webbrowser1.Document).images.item('signup_join_beanfun_signup_samplecaptcha_CaptchaImage',EmptyParam)as IHTMLElement).getAttribute('LanapCaptcha.aspx?get=image&amp;c=signup_join_beanfun_signup_samplecaptcha&amp;t=d10d9114a3784d8eb46a70e752c6aea4&amp;s=B%2bx0RN36Kv%2bKylW0opJhn%2fDf5Dsnpq1Hri9SwrOQS8I%3d',0);
rang:=((IHTMLDocument2(webbrowser1.Document).body as HTMLBody).createControlRange)as IHTMLControlRange;
rang.add(IHTMLDocument2(webbrowser1.Document).images.item('signup_join_beanfun_signup_samplecaptcha_CaptchaImage',EmptyParam)as
IHTMLControlElement);
rang.execCommand('Copy',False,0);
image1.Picture.Assign(ClipBoard);
except
end;
end;他卻說

Answer 5

Delphi XE下测试通过
单元文件unit Unit11;interfaceuses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, OleCtrls, SHDocVw, ExtCtrls;type
  TForm11 = class(TForm)
    btn1: TButton;
    img1: TImage;
    wb1: TWebBrowser;
    btn2: TButton;
    mmo1: TMemo;
    edt1: TEdit;
    procedure FormCreate(Sender: TObject);
    procedure btn2Click(Sender: TObject);
    procedure btn1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;var
  Form11: TForm11;implementation
uses ActiveX, wininet, mshtml, Clipbrd;
{$R *.dfm}procedure DomImg2Image(id:string; wb:TWebBrowser; img:TImage );
var
  rang:IHTMLControlRange;
begin
  rang:=((IHTMLDocument2(wb.Document).body as HTMLBody).createControlRange)as
    IHTMLControlRange;
  rang.add(IHTMLDocument2(wb.Document).images.item(id,EmptyParam)as
    IHTMLControlElement);
  rang.execCommand('Copy',False,0);
  img.Picture.Assign(ClipBoard);
end;procedure TForm11.btn1Click(Sender: TObject);
var
  i:Integer;
  rang:IHTMLControlRange;
begin
  //遍历图片元素, 在memo中显示Img的ID和src属性
  mmo1.clear;
  for i:= 0 to IHTMLDocument2(wb1.Document).images.length-1 do
  begin
    mmo1.lines.add((IHTMLDocument2(wb1.Document).images.item(i,EmptyParam)as
      IHTMLElement).getAttribute('id',0));
    mmo1.lines.add((IHTMLDocument2(wb1.Document).images.item(i,EmptyParam)as
      IHTMLElement).getAttribute('src',0));
  end;
end;procedure TForm11.btn2Click(Sender: TObject);
begin
  //edt1.Text是Img的ID值, webbrowse对象, TImage
  DomImg2Image(edt1.Text, wb1, img1);
end;procedure TForm11.FormCreate(Sender: TObject);
begin
  wb1.Navigate('c:\aa.html');
end;end.aa.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
</head><body>
                <img id='signup_join_beanfun_signup_samplecaptcha_CaptchaImage' src='http://www.baidu.com/img/shouye_b5486898c692066bd2cbaeda86d74448.gif' alt='CAPTCHA code image' />
             <img src='http://info-database.csdn.net/Upload/2012-10-08/amd-475-60-1008.jpg' alt='重新取得' /></body>
</html>

Answer 6

获得图片
1,WEB内copy获得
2,idhttp获得
3，缓存获得
个人感觉第一个可能是最稳妥的方法，2可能获得的不一样，3有的可能获得不到

Answer 7

没有ID,应该有SRC，根据src的特征找

Answer 8

COPY 获得会出现Invalid clipboard format的问题，我现在都还没有解决这个问题

Answer 9

引入头文件：TPngImage,TJpegimage, TGifImage