onbeforeprint event

發行項
05/02/2017

Fires on the object before its associated document prints or previews for printing.

Syntax

HTML Attribute	<element onbeforeprint = "handler(event)">
Event Property	object.onbeforeprint = handler;
attachEvent Method	object.attachEvent("onbeforeprint", handler)
addEventListener Method	object.addEventListener("beforeprint", handler, useCapture)

Event information

Synchronous	No
Bubbles	No
Cancelable	No

Event handler parameters

pEvtObj [in]
Type: IHTMLEventObj

Standards information

There are no standards that apply here.

Remarks

Use this event to modify the document just before it prints or previews for printing. In most cases it is used to make all the information on the document visible just before printing.

Use the event in conjunction with the HTMLWindowEvents::onafterprint event to undo the changes made to the document in the HTMLWindowEvents::onbeforeprint event.

Prints the document associated with the object for which the event is specified.

To invoke this event, do one of the following:

Choose Print or Print Preview from the File menu.
Press CTRL+P.
Right-click anywhere on a document, and choose Print.
Right-click a link on a document, and choose Print.
From Windows Explorer, select an .htm file and choose Print from the File menu.
From Windows Explorer, right-click an .htm file and choose Print.

The pEvtObj parameter is required for the following interfaces:

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