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m_getvalues_layout(3LAYOUT) Layout Service Library Functions m_getvalues_layout(3LAYOUT)
NAME
m_getvalues_layout - query layout values of a LayoutObject
SYNOPSIS
cc [ flag... ] file... -llayout [ library... ]
#include <sys/layout.h>
int m_getvalues_layout(const LayoutObject layout_object, LayoutValues values, int *index_returned);
DESCRIPTION
The m_getvalues_layout() function queries the current setting of layout values within a LayoutObject.
The layout_object argument specifies a LayoutObject returned by the m_create_layout(3LAYOUT) function.
The values argument specifies the list of layout values that are to be queried. Each value element of a LayoutValueRec must point to a
location where the layout value is stored. That is, if the layout value is of type T, the argument must be of type T*. The values are
queried from the LayoutObject and represent its current state.
It is the user's responsibility to manage the space allocation for the layout values queried. If the layout value name has QueryValueSize
OR-ed to it, instead of the value of the layout value, only its size is returned. The caller can use this option to determine the amount of
memory needed to be allocated for the layout values queried.
RETURN VALUES
Upon successful completion, the m_getvalues_layout() function returns 0. If any value cannot be queried, the index of the value causing the
error is returned in index_returned, -1 is returned and errno is set to indicate the error.
ERRORS
The m_getvalues_layout() function may fail if:
EINVAL The layout value specified by index_returned is unknown, its value is invalid, or the layout_object argument is invalid. In
the case of an invalid layout_object argument, the value returned in index_returned is -1.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
SEE ALSO
m_create_layout(3LAYOUT), attributes(5)
SunOS 5.10 8 Jun 1999 m_getvalues_layout(3LAYOUT)