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%D \module
%D [ file=spec-win,
%D version=1996.01.25,
%D title=\CONTEXT\ Special Macros,
%D subtitle=\YandY's \DVIWINDO,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.
%D Remark: chained references are not yet implemented.
%D \macros
%D {dosetupinteraction,
%D dostartthisislocation,
%D dostartthisisrealpage,
%D dostartgotolocation,
%D dostartgotorealpage,
%D dostartrunprogram,
%D usepagedestinations}
%D {}
%D
%D As told before, these were the first interactive specials.
%D In those days, these kind of specials were still elegant
%D and straightforward.
\startspecials[dviwindo]
\definespecial\dosetupinteraction%
{\showmessage\m!interactions{21}{dviwindo}}
\definespecial\dostartgotolocation#1#2#3#4#5#6%
{\bgroup
\doifelsenothing{#3}
{\doifelsenothing{#4}
{\!!doneafalse}
{\doifparentfileelse{#4}
{\!!doneafalse}
{\!!doneatrue}}%
\setreferencefilename#4\to\DVIfile
\scratchdimen#1\edef\width {\the\scratchdimen\space}%
\scratchdimen#2\edef\height{\the\scratchdimen\space}%
\special
{button:
\width \height
\if!!donea
file: \DVIfile,
\fi
"#5"}}
{}% nog uri afhandelen
\egroup}
\definespecial\dostartgotorealpage#1#2#3#4#5%
{\bgroup
\doifelsenothing{#3}
{\doifelsenothing{#4}
{\!!doneafalse}
{\doifparentfileelse{#4}
{\!!doneafalse}
{\!!doneatrue}}%
\setreferencefilename#4\to\DVIfile
\scratchdimen#1\edef\width {\the\scratchdimen\space}%
\scratchdimen#2\edef\height{\the\scratchdimen\space}%
\special
{button:
\width \height
\if!!donea
file: \DVIfile,
\fi
\ifnum0#5=0 \else
page: #5
\fi}}
{}% nog uri afhandelen
\egroup}
\definespecial\dostartthisislocation#1%
{\special{mark: "#1"}}
\definespecial\dostartthisisrealpage#1%
{}
\definespecial\dostartrunprogram#1#2#3#4%
{\bgroup
\scratchdimen#1\edef\width {\the\scratchdimen\space}%
\scratchdimen#2\edef\height{\the\scratchdimen\space}%
\special{button: \width \height launch: #3 #4}%
\egroup}
\let\doyandyinsertmov = \docommoninsertmov
\let\dotrinsertmov = \docommoninsertmov
\stopspecials
\endinput
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