HTML Help ActiveX control syntax

All of the code required for an instance of the HTML Help ActiveX control is contained within the HTML <OBJECT> start and end tags. Use the <OBJECT> tag to specify a command, such as Splash or Contents, and to call a method, such as Click or TextPopup.

Using the HTML Help ActiveX Control Wizard in HTML Help Workshop, you can insert the basic syntax automatically.

Coding the HTML <OBJECT> tag

The <OBJECT> tag enables you to embed the HTML Help ActiveX control directly in a file. The attributes in the following table are required by the control.

Attribute	Description
ID	Specifies the name by which the HTML Help ActiveX control will be known to the HTML file. The default ID is HHCTRL, but you can specify any name you want. For example, if you entered Test as the ID, you would use that same ID to refer to the control from a script. If you use multiple instances of the HTML Help ActiveX control in a file, each instance must have a unique ID.
`TYPE`	Specifies the `MIME` type for the object. The HTML Help ActiveX control `TYPE` is application/x-oleobject.
`CLASSID`	Uniquely identifies the HTML Help ActiveX control from other ActiveX controls. The HTML Help ActiveX control identifier is the registry key number and is the same for every instance of the control that you use. The HTML Help ActiveX control `CLASSID` is clsid:adb880a6-d8ff-11cf-9377-00aa003b7a11.
`CODEBASE`	Specifies the version number of the HTML Help ActiveX control. Enables the automatic download mechanism of ActiveX controls and full version checking.
`PARAM`	The `PARAM` attribute, which is also an HTML tag with attributes specific to it, lists a sequence of `NAME` and `VALUE` attribute pairs that are passed to the HTML Help ActiveX control to specify which HTML Help feature to provide and how to provide it. This attribute is required for all instances of the HTML Help ActiveX Control. Omitting the `<PARAM>` tag from an HTML Help ActiveX control `<OBJECT>` tag may result in unexpected behavior.

Notes

Several standard <OBJECT> tag attributes, such as ALIGN, BORDER, CODETYPE, DECLARE, HEIGHT, HSPACE, NAME, SHAPES, STANDBY, USEMAP, VSPACE, and WIDTH, can also be used to define the appearance and position of the HTML Help ActiveX control.
WIDTH and HEIGHT values can be expressed in percentage, followed by a percent sign, or in pixels (numeric value only).
The HTML Help ActiveX control does not support the <OBJECT> tag DATA attribute.

Coding the <PARAM> tag

The <PARAM> tag is used to pass a sequence of parameters to the HTML Help ActiveX control to specify a feature and any additional information that the feature may require.

The <PARAM> tag is valid only within an <OBJECT> tag. The end tag is optional.

Attribute	Description
`NAME`	Specifies a parameter. The first parameter in the sequence must be Command.
`VALUE`	Specifies a valid value for the parameter specified in the `NAME` attribute.

Notes

Never omit the <PARAM> tag from an HTML Help ActiveX control <OBJECT> tag, as this may result in unexpected behavior.
For more information about other attributes supported by the <OBJECT> and <PARAM> tags, see a comprehensive HTML Reference, such as the HTML Elements reference on the MSDN Online Web Workshop.

	About the HTML Help ActiveX control