Sets or retrieves the top position of the object in the units specified by the IHTMLStyle::top attribute.
HRESULT IHTMLStyle::get_posTop(float *p);HRESULT IHTMLStyle::put_posTop(float v);
- Pointer to a variable of type float that receives any valid floating-point number that uses the same length units as the IHTMLStyle::top attribute.
- float that specifies any valid floating-point number that uses the same length units as the IHTMLStyle::top attribute.
Returns S_OK if successful, or an error value otherwise.
This property reflects the value of the Cascading Style Sheets (CSS) IHTMLStyle::top attribute for positioned items. This property always returns zero for nonpositioned items because "top" has meaning only when the object is positioned. If the IHTMLStyle::top attribute is not set, the IHTMLStyle::posTop property returns zero. Use the IHTMLElement::offsetTop property to calculate actual positions within the document area.
Setting this property changes the value of the top position but leaves the units designator for the property unchanged.
Unlike the IHTMLStyle::top property, the IHTMLStyle::posTop property value is a floating-point number, not a string.
For more information about how to access the dimension and location of objects on the page through the Dynamic HTML (DHTML) Document Object Model (DOM), see Measuring Element Dimension and Location with CSSOM in Internet Explorer 9.