Document::DoFileIsAlreadyOpen

Section: ET++ method description (n)
Updated: automatically Fri Mar 15 14:13:05 1991
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NAME

Document::DoFileIsAlreadyOpen - instance method

TEMPLATE

openFileOnceMore = bool DoFileIsAlreadyOpen(Document * anotherDoc, char * fileName)

SPECIFIERS

public virtual

DESCRIPTION

DoFileIsAlreadyOpen is called by the method Load when a file is to be loaded which has already been opened by anotherDoc. DoFileIsAlreadyOpen must tell now whether this document may also open the file.
The default implementation pops up an alert with a warning message, calls the method ShowDocument and returns FALSE. The method ShowDocument puts the main window of anotherDoc in front of all the other windows.
Override this method and return TRUE if it is allowed to open a file several times within an application.
See also the filebrowserII example application which allows to edit the same file in different windows concurrently. Method is rarely overridden.

ARGUMENTS

Document * anotherDoc: the document which already has opened the file
char * fileName: the name of the file already opened by anotherDoc

RETURN ARGUMENT

bool openFileOnceMore: indicates whether this document may open the file, too

FIRST DEFINITION

class Document

FILES

implementation:: Document.C

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Time: 00:40:28 GMT, March 30, 2022