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Delphi Programming with TWebBrowser

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TWebBrowser - Methods

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TWebBrowser supports the following methods:

• ClientToWindow
• ExecWB
• GetProperty
• GoBack
• GoForward
• GoHome
• GoSearch
• Navigate
• Navigate2
• PutProperty
• QueryStatusWB
• Quit
• Refresh
• Refresh2
• ShowBrowserBar
• Stop

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ClientToWindow

procedure ClientToWindow(var pcx: SYSINT; var pcy: SYSINT);

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ExecWB

procedure ExecWB(cmdID: OLECMDID; cmdexecopt: OLECMDEXECOPT); overload;
procedure ExecWB(cmdID: OLECMDID; cmdexecopt: OLECMDEXECOPT; var pvaIn: OleVariant); overload;
procedure ExecWB(cmdID: OLECMDID; cmdexecopt: OLECMDEXECOPT; var pvaIn: OleVariant;
var pvaOut: OleVariant); overload;

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GetProperty

Retrieves the value of the component's property.

function GetProperty(const Property_: WideString): OleVariant;

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GoBack

Show the previous URL/item in the history list (if there is one).

procedure GoBack;

Calling this procedure when there is no previous item in the history will generate an error. See also OnCommandStateChange event.

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GoForward

Navigate forwards to the next URL/item in the history list (if there is one).

procedure GoForward;

Calling this procedure when there is no next item in the history will generate an error. See also OnCommandStateChange event.

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GoHome

Loads the home/start page.

procedure GoHome;

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GoSearch

Opens the search page.

procedure GoSearch;

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Navigate

Navigate to the URL (or file) specified.

procedure Navigate(const URL: WideString); overload;
procedure Navigate(const URL: WideString; var Flags: OleVariant); overload;
procedure Navigate(const URL: WideString; var Flags: OleVariant; var TargetFrameName: OleVariant); overload;
procedure Navigate(const URL: WideString; var Flags: OleVariant;
var TargetFrameName: OleVariant; var PostData: OleVariant); overload;
procedure Navigate(const URL: WideString; var Flags: OleVariant;
var TargetFrameName: OleVariant; var PostData: OleVariant;
var Headers: OleVariant); overload;

For an example of how to navigate, posting data at the same time see http://www.scalabium.com/faq/dct0139.htm.

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Navigate2

Navigate to the URL (or file) specified.

procedure Navigate2(var URL: OleVariant); overload;
procedure Navigate2(var URL: OleVariant; var Flags: OleVariant); overload;
procedure Navigate2(var URL: OleVariant; var Flags: OleVariant; var TargetFrameName: OleVariant); overload;
procedure Navigate2(var URL: OleVariant; var Flags: OleVariant;
var TargetFrameName: OleVariant; var PostData: OleVariant); overload;
procedure Navigate2(var URL: OleVariant; var Flags: OleVariant;
var TargetFrameName: OleVariant; var PostData: OleVariant;
var Headers: OleVariant); overload;

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PutProperty

Sets the value of one of the component's properties.

procedure PutProperty(const Property_: WideString; vtValue: OleVariant);

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QueryStatusWB

function QueryStatusWB(cmdID: OLECMDID): OLECMDF;

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Quit

procedure Quit;

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Refresh

Reloads the currently displayed item.

procedure Refresh;

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Refresh2

Reloads the currently displayed item.

procedure Refresh2; overload;
procedure Refresh2(var Level: OleVariant); overload;

where:-

Level is one of:

TRefreshConstants = (

REFRESH_NORMAL = 0,

Default.

REFRESH_IFEXPIRED = 1,

Refresh only occurs if the page has expired.

REFRESH_CONTINUE = 2,

For WebBrowser internal use. Do not use.

REFRESH_COMPLETELY = 3 );

Sends "pragma:nocache" to the server, requesting that the returned copy is refreshed and not a cached version.

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ShowBrowserBar

procedure ShowBrowserBar(var pvaClsid: OleVariant); overload;
procedure ShowBrowserBar(var pvaClsid: OleVariant; var pvarShow: OleVariant); overload;
procedure ShowBrowserBar(var pvaClsid: OleVariant; var pvarShow: OleVariant;
var pvarSize: OleVariant); overload;

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Stop

Stops any pending navigation or download and any dynamic page elements (such as sounds).

procedure Stop;

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See also: http://msdn.microsoft.com/en-us/library/system.windows.forms.webbrowser_methods.aspx.

To report any errors or omissions please e-mail me (brian@cryer.co.uk).

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These notes are believed to be correct for Delphi 6 and 7 with Internet Explorer 6 and 7, and may apply to other versions as well.