178 lines
4.6 KiB
Plaintext
178 lines
4.6 KiB
Plaintext
.ds xT X Toolkit Intrinsics \- C Language Interface
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.ds xW Athena X Widgets \- C Language X Toolkit Interface
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.ds xL Xlib \- C Language X Interface
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.ds xC Inter-Client Communication Conventions Manual
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.na
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.de Ds
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.nf
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.ft 1
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.ny0
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.TH XSupportsLocal 3X11 "Release 5" "X Version 11" "XLIB FUNCTIONS"
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.SH NAME
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XSupportsLocale, XSetLocaleModifiers \- determine locale support and configure locale modifiers
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.SH SYNTAX
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Bool XSupportsLocale\^(\|)
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.LP
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char *XSetLocaleModifiers\^(\^\fImodifier_list\fP\^)
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.br
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char *\fImodifier_list\fP\^;
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.SH ARGUMENTS
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.IP \fImodifier_list\fP 1i
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Specifies the modifiers.
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.SH DESCRIPTION
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The
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.ZN XSupportsLocale
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function returns
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.ZN True
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if Xlib functions are capable of operating under the current locale.
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If it returns
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.ZN False ,
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Xlib locale-dependent functions for which the
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.ZN XLocaleNotSupported
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return status is defined will return
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.ZN XLocaleNotSupported .
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Other Xlib locale-dependent routines will operate in the ``C'' locale.
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.LP
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.ZN XSetLocaleModifiers
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sets the X modifiers for the current locale setting.
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The modifier_list argument is a null-terminated string of the form
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``{@\^\fIcategory\fP\^=\^\fIvalue\fP\^}'', that is,
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having zero or more concatenated ``@\^\fIcategory\fP\^=\^\fIvalue\fP\^''
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entries where \fIcategory\fP is a category name
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and \fIvalue\fP is the (possibly empty) setting for that category.
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The values are encoded in the current locale.
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Category names are restricted to the POSIX Portable Filename Character Set.
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.LP
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The local host X locale modifiers announcer (on POSIX-compliant systems,
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the XMODIFIERS environment variable) is appended to the modifier_list to
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provide default values on the local host.
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If a given category appears more than once in the list,
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the first setting in the list is used.
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If a given category is not included in the full modifier list,
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the category is set to an implementation-dependent default for the current locale.
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An empty value for a category explicitly specifies the
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implementation-dependent default.
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.LP
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If the function is successful, it returns a pointer to a string. The contents
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of the string are such that a subsequent call with that string (in the same
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locale) will restore the modifiers to the same settings. If modifier_list is
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a NULL pointer,
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.ZN XSetLocaleModifiers
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also returns a pointer to such a string,
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and the current locale modifiers are not changed.
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.LP
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If invalid values are given for one or more modifier categories supported by
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the locale, a NULL pointer is returned, and none of the
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current modifiers are changed.
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.LP
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At program startup the modifiers that are in effect are unspecified until
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the first successful call to set them. Whenever the locale is changed, the
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modifiers that are in effect become unspecified until the next successful call
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to set them.
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Clients should always call
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.ZN XSetLocaleModifiers
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with a non-NULL modifier_list after setting the locale,
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before they call any locale-dependent Xlib routine.
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.LP
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The only standard modifier category currently defined is ``im'',
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which identifies the desired input method.
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The values for input method are not standardized.
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A single locale may use multiple input methods,
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switching input method under user control.
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The modifier may specify the initial input method in effect,
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or an ordered list of input methods.
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Multiple input methods may be specified in a single im value string
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in an implementation-dependent manner.
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.LP
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The returned modifiers string is owned by Xlib and should not be modified or
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freed by the client.
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It may be freed by Xlib after the current locale or modifiers is changed.
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Until freed, it will not be modified by Xlib.
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.SH "SEE ALSO"
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\fI\*(xL\fP
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