1.WebBrowser 操作记要
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
2.//打开空页面, 并写入...
WebBrowser1.Navigate('about:<head><title>标题</title><body>页面内容</body>');
3.//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);
begin
if WebBrowser1.Application = pDisp
then
begin
Text := '网页下载完毕！';
end;
end;
procedure TForm1.WebBrowser1DocumentComplete(ASender: TObject;
const pDisp: IDispatch;
var URL: OleVariant);
begin
if WebBrowser1.Application = pDisp
then
begin
Text := '网页下载完毕！';
end;
end;
4.//改变背景色或背景图片:
WebBrowser1.OleObject.document.body.bgcolor :=
'#FF0000';
'#FF0000';
WebBrowser1.OleObject.document.body.background :=
'...图片地址';
'...图片地址';
5.//获取网页源代码
var s:
string;
string;
begin
s := WebBrowser1.OleObject.document.body.innerHTML;
//body内的所有代码
//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
//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
//html内的所有代码
end;
6.//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);
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);
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);
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
//得到光标位置
PopupMenu1.Popup(mPoint.X, mPoint.Y);
//弹出popupmenu1的菜单
//弹出popupmenu1的菜单
Handled:=True;
end;
end;
7//新页面写入
begin WebBrowser1.Navigate('about:blank');
WebBrowser1.OleObject.Document.Writeln('ok');end;
WebBrowser1.OleObject.Document.Writeln('ok');end;
8.//禁止提示脚步错误
procedure TForm1.WebBrowser1NavigateComplete2(ASender: TObject;const
pDisp: IDispatch; var URL: OleVariant);
pDisp: IDispatch; var URL: OleVariant);
begin WebBrowser1.Silent := True;
end;
//禁止弹出窗口
procedure
TForm1.WebBrowser1NewWindow2(ASender: TObject; var ppDisp: IDispatch;
var Cancel: WordBool);
TForm1.WebBrowser1NewWindow2(ASender: TObject; var ppDisp: IDispatch;
var Cancel: WordBool);
begin
Cancel := True;
end;
9.从 TWebBrowser 获取 DOM 中的 window 对象
10.获取 window 对象的时机
{当页面打开完毕时获取 window 对象}
procedure
TForm1.WebBrowser1DocumentComplete(ASender: TObject;
const pDisp: IDispatch;
var URL: OleVariant);
TForm1.WebBrowser1DocumentComplete(ASender: TObject;
const pDisp: IDispatch;
var URL: OleVariant);
begin
if pDisp = (ASender
as TWebBrowser).Application
then
begin window := ((ASender
as TWebBrowser).Document
as IHTMLDocument2).parentWindow;
end;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
ShowMessage(WebBrowser1.OleObject.document.body.innerText);
end;
procedure TForm1.CheckBox1Click(Sender: TObject);
begin
{这里是让整个页面可编辑, 也可以单独编辑某个元素} WebBrowser1.OleObject.document.body.contentEditable := CheckBox1.Checked;
{有些浏览器需要这样设置: document.designMode = "On";}
{这里是让整个页面可编辑, 也可以单独编辑某个元素} WebBrowser1.OleObject.document.body.contentEditable := CheckBox1.Checked;
{有些浏览器需要这样设置: document.designMode = "On";}
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
Panel1.Align := alTop;
CheckBox1.Anchors := [akTop, akRight];
Button1.Anchors := CheckBox1.Anchors;
CheckBox1.Caption :=
'编辑'; Button1.Caption :=
'显示网页文本';
'编辑'; Button1.Caption :=
'显示网页文本';
WebBrowser1.Align := alClient; WebBrowser1.Navigate('http://www.cnblogs.com/del/archive/2009/04/16/1437417.html');
end;
const OLECMDID_OPTICAL_ZOOM =
63;
63;
procedure TForm1.FormCreate(Sender: TObject);
begin
WebBrowser1.Navigate('http://del.cnblogs.com');
end;
procedure TForm1.Button1Click(Sender: TObject);
var ZoomIn: OleVariant;
begin
ZoomIn :=
150;
150;
WebBrowser1.ExecWB(OLECMDID_OPTICAL_ZOOM, OLECMDEXECOPT_DODEFAULT, ZoomIn);
end;