wpQueryHandleFromContents - Syntax

This method is specific to Version 4, or higher, of the OS/2 operating system.

This instance method returns a handle to a known system data type based on a file's contents. This is an abstract method; subclasses that describe files for which a system handle type exist (such as WPIcon or WPBitmap) should subclass this method.

#define INCL_WINWORKPLACE
#include <os2.h>

WPDataFile     *somSelf;  /*  Pointer to the object on which the method is being invoked. */
LHANDLE         handle;   /*  Handle to the data type object (or NULLHANDLE if call is unsuccessful). */

handle = _wpQueryHandleFromContents(somSelf);