190 lines
4.8 KiB
Groff
190 lines
4.8 KiB
Groff
.\" Copyright 1993 X Consortium
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.\"
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.\" Permission is hereby granted, free of charge, to any person obtaining
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.\" a copy of this software and associated documentation files (the
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.\" "Software"), to deal in the Software without restriction, including
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.\" without limitation the rights to use, copy, modify, merge, publish,
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.\" distribute, sublicense, and/or sell copies of the Software, and to
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.\" permit persons to whom the Software is furnished to do so, subject to
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.\" the following conditions:
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.\"
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.\" The above copyright notice and this permission notice shall be
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.\" included in all copies or substantial portions of the Software.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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.\" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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.\" IN NO EVENT SHALL THE X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR
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.\" OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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.\" ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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.\" OTHER DEALINGS IN THE SOFTWARE.
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.\"
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.\" Except as contained in this notice, the name of the X Consortium shall
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.\" not be used in advertising or otherwise to promote the sale, use or
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.\" other dealings in this Software without prior written authorization
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.\" from the X Consortium.
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.\"
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.ds tk X Toolkit
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.ds xT X Toolkit Intrinsics \- C Language Interface
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.ds xI Intrinsics
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.ds xW X Toolkit Athena Widgets \- C Language 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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.ds Rn 3
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.ds Vn 2.2
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.hw XtDirect-Convert wid-get
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.na
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.de Ds
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.nf
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.\\$1D \\$2 \\$1
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.ft 1
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.ps \\n(PS
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.\".if \\n(VS>=40 .vs \\n(VSu
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.\".if \\n(VS<=39 .vs \\n(VSp
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.de De
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.ce 0
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.nr BD 0
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.in \\n(OIu
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.sp \\n(DDu
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.fi
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..
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.de FD
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.LP
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.KS
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.TA .5i 3i
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.ta .5i 3i
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.nf
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.de FN
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.fi
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.LP
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.de IN \" send an index entry to the stderr
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..
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.de C{
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.KS
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.nf
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.D
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.\"
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.\" choose appropriate monospace font
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.\" the imagen conditional, 480,
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.\" may be changed to L if LB is too
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.\" heavy for your eyes...
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.\"
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.ie "\\*(.T"480" .ft L
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.el .ie "\\*(.T"300" .ft L
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.el .ie "\\*(.T"202" .ft PO
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.el .ie "\\*(.T"aps" .ft CW
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.el .vs \\n(VSp
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.de C}
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.DE
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.R
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..
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.de Pn
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.ie t \\$1\fB\^\\$2\^\fR\\$3
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.el \\$1\fI\^\\$2\^\fP\\$3
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..
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.de ZN
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.ie t \fB\^\\$1\^\fR\\$2
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.el \fI\^\\$1\^\fP\\$2
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..
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.de NT
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.ne 7
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.ds NO Note
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.if \\n(.$>$1 .if !'\\$2'C' .ds NO \\$2
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.if \\n(.$ .if !'\\$1'C' .ds NO \\$1
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.el .sp 10p
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.ce
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. \" Note End -- doug kraft 3/85
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.de NE
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..
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.ny0
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.TH XtConvert __libmansuffix__ __xorgversion__ "XT COMPATIBILITY FUNCTIONS"
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.SH NAME
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XtConvert, XtDirectConvert \- invoke resource converters
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.SH SYNTAX
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.HP
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void XtConvert(Widget \fIw\fP, String \fIfrom_type\fP, XrmValuePtr \fIfrom\fP,
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String \fIto_type\fP, XrmValuePtr \fIto_return\fP);
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.HP
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void XtDirectConvert(XtConverter \fIconverter\fP, XrmValuePtr \fIargs\fP,
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Cardinal \fInum_args\fP, XrmValuePtr \fIfrom\fP, XrmValuePtr \fIto_return\fP);
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.SH ARGUMENTS
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.ds Al that contains the additional arguments needed to perform \
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the conversion (often NULL)
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.IP \fIargs\fP 1i
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Specifies the argument list \*(Al.
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.IP \fIconverter\fP 1i
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Specifies the conversion procedure that is to be called.
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.IP \fIfrom\fP 1i
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Specifies the value to be converted.
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.IP \fIfrom_type\fP 1i
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Specifies the source type.
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.IP \fInum_args\fP 1i
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Specifies the number of additional arguments (often zero).
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.IP \fIto_type\fP 1i
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Specifies the destination type.
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.IP \fIto_return\fP 1i
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Returns the converted value.
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.ds Wi to use for additional arguments (if any are needed)
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.IP \fIw\fP 1i
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Specifies the widget \*(Wi.
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.SH DESCRIPTION
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The
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.ZN XtConvert
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function looks up the type converter registered to convert from_type
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to to_type, computes any additional arguments needed, and then calls
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.ZN XtDirectConvert .
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.ZN XtConvert
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has been replaced by
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.ZN XtConvertAndStore .
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.LP
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The
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.ZN XtDirectConvert
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function looks in the converter cache to see if this conversion procedure
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has been called with the specified arguments.
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If so, it returns a descriptor for information stored in the cache;
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otherwise, it calls the converter and enters the result in the cache.
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.LP
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Before calling the specified converter,
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.ZN XtDirectConvert
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sets the return value size to zero and the return value address to NULL.
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To determine if the conversion was successful,
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the client should check to_return.address for non-NULL.
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.ZN XtDirectConvert
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has been replaced by
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.ZN XtCallConverter .
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.SH "SEE ALSO"
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XtAppAddConverter(__libmansuffix__),
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XtStringConversionWarning(__libmansuffix__),
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XtConvertAndStore(__libmansuffix__),
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XtCallConverter(__libmansuffix__)
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.br
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\fI\*(xT\fP
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.br
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\fI\*(xL\fP
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