<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html> <head> <!-- Generated by HsColour, http://www.cs.york.ac.uk/fp/darcs/hscolour/ --> <title>Graphics/X11/Xlib/Display.hs</title> <link type='text/css' rel='stylesheet' href='hscolour.css' /> </head> <body> <pre><a name="line-1"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span> <a name="line-2"></a><span class='hs-comment'>-- |</span> <a name="line-3"></a><span class='hs-comment'>-- Module : Graphics.X11.Xlib.Display</span> <a name="line-4"></a><span class='hs-comment'>-- Copyright : (c) Alastair Reid, 1999-2003</span> <a name="line-5"></a><span class='hs-comment'>-- License : BSD-style (see the file libraries/base/LICENSE)</span> <a name="line-6"></a><span class='hs-comment'>--</span> <a name="line-7"></a><span class='hs-comment'>-- Maintainer : libraries@haskell.org</span> <a name="line-8"></a><span class='hs-comment'>-- Stability : provisional</span> <a name="line-9"></a><span class='hs-comment'>-- Portability : portable</span> <a name="line-10"></a><span class='hs-comment'>--</span> <a name="line-11"></a><span class='hs-comment'>-- A collection of FFI declarations for interfacing with Xlib Displays.</span> <a name="line-12"></a><span class='hs-comment'>--</span> <a name="line-13"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span> <a name="line-14"></a> <a name="line-15"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>X11</span><span class='hs-varop'>.</span><span class='hs-conid'>Xlib</span><span class='hs-varop'>.</span><span class='hs-conid'>Display</span><span class='hs-layout'>(</span> <a name="line-16"></a> <a name="line-17"></a> <span class='hs-varid'>allPlanes_aux</span><span class='hs-layout'>,</span> <a name="line-18"></a> <span class='hs-varid'>blackPixel</span><span class='hs-layout'>,</span> <a name="line-19"></a> <span class='hs-varid'>whitePixel</span><span class='hs-layout'>,</span> <a name="line-20"></a> <span class='hs-varid'>connectionNumber</span><span class='hs-layout'>,</span> <a name="line-21"></a> <span class='hs-varid'>defaultColormap</span><span class='hs-layout'>,</span> <a name="line-22"></a> <span class='hs-varid'>defaultGC</span><span class='hs-layout'>,</span> <a name="line-23"></a> <span class='hs-varid'>defaultDepth</span><span class='hs-layout'>,</span> <a name="line-24"></a> <span class='hs-varid'>defaultScreen</span><span class='hs-layout'>,</span> <a name="line-25"></a> <span class='hs-varid'>defaultScreenOfDisplay</span><span class='hs-layout'>,</span> <a name="line-26"></a> <span class='hs-varid'>displayHeight</span><span class='hs-layout'>,</span> <a name="line-27"></a> <span class='hs-varid'>displayHeightMM</span><span class='hs-layout'>,</span> <a name="line-28"></a> <span class='hs-varid'>displayWidth</span><span class='hs-layout'>,</span> <a name="line-29"></a> <span class='hs-varid'>displayWidthMM</span><span class='hs-layout'>,</span> <a name="line-30"></a> <span class='hs-varid'>maxRequestSize</span><span class='hs-layout'>,</span> <a name="line-31"></a> <span class='hs-varid'>displayMotionBufferSize</span><span class='hs-layout'>,</span> <a name="line-32"></a> <span class='hs-varid'>resourceManagerString</span><span class='hs-layout'>,</span> <a name="line-33"></a> <span class='hs-varid'>screenResourceString</span><span class='hs-layout'>,</span> <a name="line-34"></a> <span class='hs-varid'>displayString</span><span class='hs-layout'>,</span> <a name="line-35"></a> <span class='hs-varid'>imageByteOrder</span><span class='hs-layout'>,</span> <a name="line-36"></a> <span class='hs-varid'>protocolRevision</span><span class='hs-layout'>,</span> <a name="line-37"></a> <span class='hs-varid'>protocolVersion</span><span class='hs-layout'>,</span> <a name="line-38"></a> <span class='hs-varid'>serverVendor</span><span class='hs-layout'>,</span> <a name="line-39"></a> <span class='hs-varid'>screenCount</span><span class='hs-layout'>,</span> <a name="line-40"></a> <span class='hs-varid'>defaultVisual</span><span class='hs-layout'>,</span> <a name="line-41"></a> <span class='hs-varid'>displayCells</span><span class='hs-layout'>,</span> <a name="line-42"></a> <span class='hs-varid'>displayPlanes</span><span class='hs-layout'>,</span> <a name="line-43"></a> <span class='hs-varid'>screenOfDisplay</span><span class='hs-layout'>,</span> <a name="line-44"></a> <span class='hs-varid'>defaultRootWindow</span><span class='hs-layout'>,</span> <a name="line-45"></a> <span class='hs-varid'>rootWindow</span><span class='hs-layout'>,</span> <a name="line-46"></a> <span class='hs-varid'>qLength</span><span class='hs-layout'>,</span> <a name="line-47"></a> <span class='hs-varid'>noOp</span><span class='hs-layout'>,</span> <a name="line-48"></a> <span class='hs-varid'>openDisplay</span><span class='hs-layout'>,</span> <a name="line-49"></a> <span class='hs-varid'>closeDisplay</span><span class='hs-layout'>,</span> <a name="line-50"></a> <a name="line-51"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span> <a name="line-52"></a> <a name="line-53"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>X11</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span> <a name="line-54"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>X11</span><span class='hs-varop'>.</span><span class='hs-conid'>Xlib</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span> <a name="line-55"></a> <a name="line-56"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span> <a name="line-57"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>C</span> <a name="line-58"></a> <a name="line-59"></a><span class='hs-comment'>----------------------------------------------------------------</span> <a name="line-60"></a><span class='hs-comment'>-- Display</span> <a name="line-61"></a><span class='hs-comment'>----------------------------------------------------------------</span> <a name="line-62"></a> <a name="line-63"></a><span class='hs-comment'>-- | interface to the X11 library function @XAllPlanes()@.</span> <a name="line-64"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XAllPlanes"</span> <a name="line-65"></a> <span class='hs-varid'>allPlanes_aux</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Pixel</span> <a name="line-66"></a> <a name="line-67"></a><span class='hs-comment'>-- | interface to the X11 library function @XBlackPixel()@.</span> <a name="line-68"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XBlackPixel"</span> <a name="line-69"></a> <span class='hs-varid'>blackPixel</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ScreenNumber</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Pixel</span> <a name="line-70"></a> <a name="line-71"></a><span class='hs-comment'>-- | interface to the X11 library function @XWhitePixel()@.</span> <a name="line-72"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XWhitePixel"</span> <a name="line-73"></a> <span class='hs-varid'>whitePixel</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ScreenNumber</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Pixel</span> <a name="line-74"></a> <a name="line-75"></a><span class='hs-comment'>-- This may vary from one execution to another but I believe it</span> <a name="line-76"></a><span class='hs-comment'>-- is constant during any given execution and so it can be made PURE</span> <a name="line-77"></a><span class='hs-comment'>-- without breaking referential transparency.</span> <a name="line-78"></a><span class='hs-comment'>--</span> <a name="line-79"></a><span class='hs-comment'>-- Note: underneath the opaque name, it turns out that this</span> <a name="line-80"></a><span class='hs-comment'>-- is the file descriptor. You need to know this if you want to</span> <a name="line-81"></a><span class='hs-comment'>-- use select.</span> <a name="line-82"></a> <a name="line-83"></a><span class='hs-comment'>-- | interface to the X11 library function @XConnectionNumber()@.</span> <a name="line-84"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XConnectionNumber"</span> <a name="line-85"></a> <span class='hs-varid'>connectionNumber</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <a name="line-86"></a> <a name="line-87"></a><span class='hs-comment'>-- | interface to the X11 library function @XDefaultColormap()@.</span> <a name="line-88"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XDefaultColormap"</span> <a name="line-89"></a> <span class='hs-varid'>defaultColormap</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ScreenNumber</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Colormap</span> <a name="line-90"></a> <a name="line-91"></a><span class='hs-comment'>-- XListDepths :: Display -> ScreenNumber -> ListInt using res1 = XListDepths(arg1,arg2,&res1_size)</span> <a name="line-92"></a> <a name="line-93"></a><span class='hs-comment'>-- | interface to the X11 library function @XDefaultGC()@.</span> <a name="line-94"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XDefaultGC"</span> <a name="line-95"></a> <span class='hs-varid'>defaultGC</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ScreenNumber</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GC</span> <a name="line-96"></a> <a name="line-97"></a><span class='hs-comment'>-- | interface to the X11 library function @XDefaultDepth()@.</span> <a name="line-98"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XDefaultDepth"</span> <a name="line-99"></a> <span class='hs-varid'>defaultDepth</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ScreenNumber</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <a name="line-100"></a> <a name="line-101"></a><span class='hs-comment'>-- | interface to the X11 library function @XDefaultScreen()@.</span> <a name="line-102"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XDefaultScreen"</span> <a name="line-103"></a> <span class='hs-varid'>defaultScreen</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ScreenNumber</span> <a name="line-104"></a> <a name="line-105"></a><span class='hs-comment'>-- | interface to the X11 library function @XDefaultScreenOfDisplay()@.</span> <a name="line-106"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XDefaultScreenOfDisplay"</span> <a name="line-107"></a> <span class='hs-varid'>defaultScreenOfDisplay</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Screen</span> <a name="line-108"></a> <a name="line-109"></a><span class='hs-comment'>-- | interface to the X11 library function @XDisplayHeight()@.</span> <a name="line-110"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XDisplayHeight"</span> <a name="line-111"></a> <span class='hs-varid'>displayHeight</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ScreenNumber</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <a name="line-112"></a> <a name="line-113"></a><span class='hs-comment'>-- | interface to the X11 library function @XDisplayHeightMM()@.</span> <a name="line-114"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XDisplayHeightMM"</span> <a name="line-115"></a> <span class='hs-varid'>displayHeightMM</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ScreenNumber</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <a name="line-116"></a> <a name="line-117"></a><span class='hs-comment'>-- | interface to the X11 library function @XDisplayWidth()@.</span> <a name="line-118"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XDisplayWidth"</span> <a name="line-119"></a> <span class='hs-varid'>displayWidth</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ScreenNumber</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <a name="line-120"></a> <a name="line-121"></a><span class='hs-comment'>-- | interface to the X11 library function @XDisplayWidthMM()@.</span> <a name="line-122"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XDisplayWidthMM"</span> <a name="line-123"></a> <span class='hs-varid'>displayWidthMM</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ScreenNumber</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <a name="line-124"></a> <a name="line-125"></a><span class='hs-comment'>-- | interface to the X11 library function @XMaxRequestSize()@.</span> <a name="line-126"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XMaxRequestSize"</span> <a name="line-127"></a> <span class='hs-varid'>maxRequestSize</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <a name="line-128"></a> <a name="line-129"></a><span class='hs-comment'>-- | interface to the X11 library function @XDisplayMotionBufferSize()@.</span> <a name="line-130"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XDisplayMotionBufferSize"</span> <a name="line-131"></a> <span class='hs-varid'>displayMotionBufferSize</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <a name="line-132"></a><span class='hs-comment'>--Disnae exist in X11R5 XExtendedMaxRequestSize :: Display -> Int</span> <a name="line-133"></a> <a name="line-134"></a><a name="resourceManagerString"></a><span class='hs-comment'>-- | interface to the X11 library function @XResourceManagerString()@.</span> <a name="line-135"></a><span class='hs-definition'>resourceManagerString</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <a name="line-136"></a><span class='hs-definition'>resourceManagerString</span> <span class='hs-varid'>display</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>xlibCString</span> <span class='hs-layout'>(</span><span class='hs-varid'>xResourceManagerString</span> <span class='hs-varid'>display</span><span class='hs-layout'>)</span> <a name="line-137"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XResourceManagerString"</span> <a name="line-138"></a> <span class='hs-varid'>xResourceManagerString</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CString</span> <a name="line-139"></a> <a name="line-140"></a><a name="screenResourceString"></a><span class='hs-comment'>-- | interface to the X11 library function @XScreenResourceString()@.</span> <a name="line-141"></a><span class='hs-definition'>screenResourceString</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Screen</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <a name="line-142"></a><span class='hs-definition'>screenResourceString</span> <span class='hs-varid'>screen</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>xlibCString</span> <span class='hs-layout'>(</span><span class='hs-varid'>xScreenResourceString</span> <span class='hs-varid'>screen</span><span class='hs-layout'>)</span> <a name="line-143"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XScreenResourceString"</span> <a name="line-144"></a> <span class='hs-varid'>xScreenResourceString</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Screen</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CString</span> <a name="line-145"></a> <a name="line-146"></a><a name="displayString"></a><span class='hs-comment'>-- | interface to the X11 library function @XDisplayString()@.</span> <a name="line-147"></a><span class='hs-definition'>displayString</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <a name="line-148"></a><span class='hs-definition'>displayString</span> <span class='hs-varid'>display</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>xlibCString</span> <span class='hs-layout'>(</span><span class='hs-varid'>xDisplayString</span> <span class='hs-varid'>display</span><span class='hs-layout'>)</span> <a name="line-149"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XDisplayString"</span> <a name="line-150"></a> <span class='hs-varid'>xDisplayString</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CString</span> <a name="line-151"></a> <a name="line-152"></a><span class='hs-comment'>-- | interface to the X11 library function @XImageByteOrder()@.</span> <a name="line-153"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XImageByteOrder"</span> <a name="line-154"></a> <span class='hs-varid'>imageByteOrder</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <a name="line-155"></a> <a name="line-156"></a><span class='hs-comment'>-- | interface to the X11 library function @XProtocolRevision()@.</span> <a name="line-157"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XProtocolRevision"</span> <a name="line-158"></a> <span class='hs-varid'>protocolRevision</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <a name="line-159"></a> <a name="line-160"></a><span class='hs-comment'>-- | interface to the X11 library function @XProtocolVersion()@.</span> <a name="line-161"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XProtocolVersion"</span> <a name="line-162"></a> <span class='hs-varid'>protocolVersion</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <a name="line-163"></a> <a name="line-164"></a><a name="serverVendor"></a><span class='hs-comment'>-- | interface to the X11 library function @XServerVendor()@.</span> <a name="line-165"></a><span class='hs-definition'>serverVendor</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <a name="line-166"></a><span class='hs-definition'>serverVendor</span> <span class='hs-varid'>display</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>xlibCString</span> <span class='hs-layout'>(</span><span class='hs-varid'>xServerVendor</span> <span class='hs-varid'>display</span><span class='hs-layout'>)</span> <a name="line-167"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XServerVendor"</span> <a name="line-168"></a> <span class='hs-varid'>xServerVendor</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CString</span> <a name="line-169"></a> <a name="line-170"></a><span class='hs-comment'>--Disnae exist: XServerRelease :: Display -> Int</span> <a name="line-171"></a> <a name="line-172"></a><span class='hs-comment'>-- | interface to the X11 library function @XScreenCount()@.</span> <a name="line-173"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XScreenCount"</span> <a name="line-174"></a> <span class='hs-varid'>screenCount</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <a name="line-175"></a> <a name="line-176"></a><span class='hs-comment'>-- | interface to the X11 library function @XDefaultVisual()@.</span> <a name="line-177"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XDefaultVisual"</span> <a name="line-178"></a> <span class='hs-varid'>defaultVisual</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ScreenNumber</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Visual</span> <a name="line-179"></a> <a name="line-180"></a><span class='hs-comment'>-- | interface to the X11 library function @XDisplayCells()@.</span> <a name="line-181"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XDisplayCells"</span> <a name="line-182"></a> <span class='hs-varid'>displayCells</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ScreenNumber</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <a name="line-183"></a> <a name="line-184"></a><span class='hs-comment'>-- | interface to the X11 library function @XDisplayPlanes()@.</span> <a name="line-185"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XDisplayPlanes"</span> <a name="line-186"></a> <span class='hs-varid'>displayPlanes</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ScreenNumber</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CInt</span> <a name="line-187"></a> <a name="line-188"></a><span class='hs-comment'>-- | interface to the X11 library function @XScreenOfDisplay()@.</span> <a name="line-189"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XScreenOfDisplay"</span> <a name="line-190"></a> <span class='hs-varid'>screenOfDisplay</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ScreenNumber</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Screen</span> <a name="line-191"></a> <a name="line-192"></a><span class='hs-comment'>-- | interface to the X11 library function @XDefaultRootWindow()@.</span> <a name="line-193"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XDefaultRootWindow"</span> <a name="line-194"></a> <span class='hs-varid'>defaultRootWindow</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Window</span> <a name="line-195"></a> <a name="line-196"></a><span class='hs-comment'>-- The following are believed to be order dependent</span> <a name="line-197"></a> <a name="line-198"></a><span class='hs-comment'>-- | interface to the X11 library function @XRootWindow()@.</span> <a name="line-199"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XRootWindow"</span> <a name="line-200"></a> <span class='hs-varid'>rootWindow</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>ScreenNumber</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Window</span> <a name="line-201"></a> <a name="line-202"></a><span class='hs-comment'>-- | interface to the X11 library function @XQLength()@.</span> <a name="line-203"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XQLength"</span> <a name="line-204"></a> <span class='hs-varid'>qLength</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CInt</span> <a name="line-205"></a> <a name="line-206"></a><span class='hs-comment'>-- | interface to the X11 library function @XNoOp()@.</span> <a name="line-207"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XNoOp"</span> <a name="line-208"></a> <span class='hs-varid'>noOp</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span> <a name="line-209"></a> <a name="line-210"></a><a name="openDisplay"></a><span class='hs-comment'>-- | interface to the X11 library function @XOpenDisplay()@.</span> <a name="line-211"></a><span class='hs-definition'>openDisplay</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Display</span> <a name="line-212"></a><span class='hs-definition'>openDisplay</span> <span class='hs-varid'>name</span> <span class='hs-keyglyph'>=</span> <a name="line-213"></a> <span class='hs-varid'>withCString</span> <span class='hs-varid'>name</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span> <span class='hs-varid'>c_name</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>do</span> <a name="line-214"></a> <span class='hs-varid'>display</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>throwIfNull</span> <span class='hs-str'>"openDisplay"</span> <span class='hs-layout'>(</span><span class='hs-varid'>xOpenDisplay</span> <span class='hs-varid'>c_name</span><span class='hs-layout'>)</span> <a name="line-215"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>Display</span> <span class='hs-varid'>display</span><span class='hs-layout'>)</span> <a name="line-216"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XOpenDisplay"</span> <a name="line-217"></a> <span class='hs-varid'>xOpenDisplay</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>Display</span><span class='hs-layout'>)</span> <a name="line-218"></a> <a name="line-219"></a><span class='hs-comment'>-- | interface to the X11 library function @XCloseDisplay()@.</span> <a name="line-220"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"HsXlib.h XCloseDisplay"</span> <a name="line-221"></a> <span class='hs-varid'>closeDisplay</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Display</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span> <a name="line-222"></a> <a name="line-223"></a><a name="xlibCString"></a><span class='hs-comment'>-- | convert a CString owned by Xlib to a Haskell String</span> <a name="line-224"></a><span class='hs-definition'>xlibCString</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>CString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <a name="line-225"></a><span class='hs-definition'>xlibCString</span> <span class='hs-varid'>act</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unsafePerformIO</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span> <a name="line-226"></a> <span class='hs-varid'>cs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>act</span> <a name="line-227"></a> <span class='hs-varid'>peekCString</span> <span class='hs-varid'>cs</span> <a name="line-228"></a> <a name="line-229"></a><span class='hs-comment'>----------------------------------------------------------------</span> <a name="line-230"></a><span class='hs-comment'>-- End</span> <a name="line-231"></a><span class='hs-comment'>----------------------------------------------------------------</span> </pre></body> </html>
