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Full Discussion: About the file extension
Top Forums UNIX for Dummies Questions & Answers About the file extension Post 302423667 by Corona688 on Friday 21st of May 2010 04:14:27 PM
Old 05-21-2010
Quote:
Originally Posted by kunalpatil09
Hi everyone,

Can we know that which type of file is there without opening a file
Not really. You can use the file command like suggested but it's not psychic either -- it opens the file. (though it only reads a tiny part of it.)
 

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XtGetClassExtension(3)						   XT FUNCTIONS 					    XtGetClassExtension(3)

NAME
XtGetClassExtension - locate a class extension record SYNTAX
XtPointer XtGetClassExtension(WidgetClass object_class, Cardinal byte_offset, XrmQuark type, long version, Cardinal record_size); ARGUMENTS
object_class Specifies the widget class containing the extension list to be searched. byte_offset Specifies the offset in bytes form the base of the widget class of the extension field to be searched. type Specifies the name of the class extension to be located. version Specifies the minimum acceptable version of the class extension required for a match. record_size Specifies the minimum acceptable length of the class extension record required for match, or 0. DESCRIPTION
The list of extension records at the specified offset in the specified widget_class will be searched for a match on the specified type, a version greater than or equal to the specified version, and a record size greater than or equal the specified record_size if it is nonzero. XtGetClassExtension returns a pointer to a matching extension record or NULL if no match is found. The returned extension record is owned by the widget class and must not be modified or freed by the caller, except possibly to be modified by the widget class owner. SEE ALSO
X Toolkit Intrinsics - C Language Interface Xlib - C Language X Interface X Version 11 libXt 1.0.7 XtGetClassExtension(3)
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