check for not null string in file

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xmtextfindstring

XmTextFindString(library call)											    XmTextFindString(library call)

NAME

       XmTextFindString -- A Text function that finds the beginning position of a text string

SYNOPSIS

       #include <Xm/Xm.h>
       Boolean XmTextFindString(
       Widget widget,
       XmTextPosition start,
       char *string,
       XmTextDirection direction,
       XmTextPosition *position);

DESCRIPTION

       XmTextFindString  locates the beginning position of a specified text string. This routine searches forward or backward for the first occur-
       rence of the string starting from the given start position.  If it finds a match, the function returns the position of the first  character
       of the string in position.  If the match string begins at the current position, this routine returns the current position.

       widget	 Specifies the Text widget ID.

       start	 Specifies  the  character  position from which the search proceeds. This is an integer number of characters from the beginning of
		 the text buffer. The first character position is 0 (zero).

       string	 Specifies the search string.

       direction Indicates the search direction. It is relative to the primary direction of the text. The possible values are

		 XmTEXT_FORWARD
			   The search proceeds toward the end of the text buffer.

		 XmTEXT_BACKWARD
			   The search proceeds toward the beginning of the text buffer.

       position  Specifies the pointer in which the first character position of the string match is returned. This is an integer number of charac-
		 ters  from  the  beginning  of the buffer. The first character position is 0 (zero). If the function returns False, this value is
		 undefined.

       For a complete definition of Text and its associated resources, see XmText(3).

RETURN

       Returns True if a string match is found; otherwise, returns False.

RELATED

       XmText(3) and XmTextFindStringWcs(3).

														    XmTextFindString(library call)

Shell Programming and Scripting