border property

發行項
05/02/2017

Specifies the properties of a border drawn around an object.

Syntax

Integer value = object.put_border(BSTR v);Integer value = object.get_border(BSTR* sBorder);

Property values

Type: BSTR

one or more of the space-delimited values listed in Possible Values.

width (medium)

Any of the range of width values available to the IHTMLRuleStyle::borderWidth property.

style (none)

Any of the range of style values available to the IHTMLRuleStyle::borderStyle property.

color

Any of the range of color values available to the IHTMLRuleStyle::borderColor property.

String format

<border-width> || <border-style> || <border-color>

CSS information

Applies To	All elements
Media	visual
Inherited	no
Initial Value	(see individual properties)

Standards information

CSS Backgrounds and Borders Module Level 3, Section 4.4

Remarks

The IHTMLRuleStyle::border property is a composite property that sets the width, style, and color values for all four sides of an object. Unlike the shorthand IHTMLRuleStyle::margin and IHTMLRuleStyle::padding properties, the IHTMLRuleStyle::border property can't set different values on the four borders. To do that, one or more of the other border properties (that is, IHTMLRuleStyle::borderBottom, IHTMLRuleStyle::borderLeft, and so on) must be used.

You must specify a style when specifying a width or color; otherwise, the border does not render.

All individual border properties not set by the composite border property are set to their default values. For example, the default value for width is "medium".

The declaration "border: thin" is identical to "border: thin none"; the default value for the border color is the same as the text color if one is not initially set. Therefore, not only does this declaration set width to "thin", it also clears any style or color values previously set.

Setting a border to 0 or omitting the IHTMLRuleStyle::border property causes no border to be displayed. Supplying the IHTMLRuleStyle::border property without a value defaults to a single border.

If a color is not specified, the text color is used.

For more information about supported colors, see the Color Table.

The below image shows the content, padding, border, and margin areas of a basic box. The red labels illustrate the edges of each of these areas.

Examples

This example uses the IHTMLRuleStyle::border property to create a square with a purple border.

<body>
   <div class="square"></div>
</body>

The following image shows the result of the CSS below.

.square {
   height: 50px;
   width: 50px;
   border: .5em ridge #800080;
}

Requirements

Minimum supported client	Windows XP
Minimum supported server	Windows Server 2003
Header	Mshtml.h
IDL	Mshtml.idl
DLL	Mshtml.dll

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