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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
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<title>Castle Game Engine: CastleXlib</title>
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<table class="container"><tr><td class="navigation">
<h2>Castle Game Engine</h2><p><a href="introduction.html" class="navigation">Introduction</a></p><p><a href="AllUnits.html" class="navigation">Units</a></p><p><a href="ClassHierarchy.html" class="navigation">Class Hierarchy</a></p><p><a href="AllClasses.html" class="navigation">Classes, Interfaces, Objects and Records</a></p><p><a href="AllTypes.html" class="navigation">Types</a></p><p><a href="AllVariables.html" class="navigation">Variables</a></p><p><a href="AllConstants.html" class="navigation">Constants</a></p><p><a href="AllFunctions.html" class="navigation">Functions and Procedures</a></p><p><a href="AllIdentifiers.html" class="navigation">Identifiers</a></p></td><td class="content">
<h1 class="unit">Unit CastleXlib</h1>
<table class="sections wide_list">
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<td><a class="section" href="#PasDoc-Description">Description</a></td><td><a class="section" href="#PasDoc-Uses">Uses</a></td><td><a class="section" href="#PasDoc-Classes">Classes, Interfaces, Objects and Records</a></td><td><a class="section" href="#PasDoc-FuncsProcs">Functions and Procedures</a></td><td><a class="section" href="#PasDoc-Types">Types</a></td><td><a class="section" href="#PasDoc-Constants">Constants</a></td><td>Variables</td></tr></table>
<a name="PasDoc-Description"></a><h2 class="description">Description</h2>
<p>
Various helper things for Xlib.</p>
<p>


<p>In initialization of this unit we register our own Xlib ErrorHandler that doesn't halt the program in case of error. It raises <a class="normal" href="CastleXlib.EXlibError.html">EXlibError</a> with appropriate Message. This allows to use ObjectPascal exceptions to handle Xlib errors, so we can gracefully finalize our program, or (in special cases) catch the exception etc. Default Xlib ErrorHandler was just printing error message and unconditionally stopping program, so it wasn's very nice.

<p>In finalization of this unit we set back previous error handler.</p>
<a name="PasDoc-Uses"></a><h2 class="uses">Uses</h2>
<ul class="useslist"><li>Xlib</li><li>X</li><li>XUtil</li><li>SysUtils</li><li><a  href="CastleUtils.html">CastleUtils</a></li></ul><h2 class="overview">Overview</h2>
<a name="PasDoc-Classes"></a><h3 class="cio">Classes, Interfaces, Objects and Records</h3>
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<tr class="listheader">
<th class="itemname">Name</th>
<th class="itemdesc">Description</th>
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<td class="itemname">Class&nbsp;<a class="bold" href="CastleXlib.EXlibError.html"><code>EXlibError</code></a></td>
<td class="itemdesc">&nbsp;</td>
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<a name="PasDoc-FuncsProcs"></a><h3 class="summary">Functions and Procedures</h3>
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<td class="itemcode"><code>function <b><a  href="CastleXlib.html#XSetStandardProperties">XSetStandardProperties</a></b>(dpy: PDisplay; win: TWindow; window_name: pchar; icon_name: pchar; icon_pixmap: TPixmap; argv: PPChar; argc: Integer; hints: PXSizeHints): integer; cdecl; external <a  href="CastleXlib.html#XlibDLL">XLibDLL</a>;</code></td>
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<td class="itemcode"><code>function <b><a  href="CastleXlib.html#XSetStandardProperties_Pascal">XSetStandardProperties_Pascal</a></b>(dpy: PDisplay; win: TWindow; window_name: pchar; icon_name: pchar; icon_pixmap: TPixmap; hints: PXSizeHints) :integer;</code></td>
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<td class="itemcode"><code>procedure <b><a  href="CastleXlib.html#XSetWMProperties_Pascal">XSetWMProperties_Pascal</a></b>(Display: PDisplay; W: TWindow; WindowName: PXTextProperty; IconName: PXTextProperty; NormalHints: PXSizeHints; WMHints: PXWMHints; ClassHints: PXClassHint);</code></td>
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<td class="itemcode"><code>function <b><a  href="CastleXlib.html#XParseGeometry">XParseGeometry</a></b>(parsestring: PChar; x_return, y_return: PInteger; width_return, height_return: <a  href="CastleUtils.html#PLongWord">PLongWord</a>): integer; cdecl; external <a  href="CastleXlib.html#XlibDLL">XlibDLL</a>;</code></td>
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<td class="itemcode"><code>function <b><a  href="CastleXlib.html#XmuLookupStandardColormap">XmuLookupStandardColormap</a></b>(dpy: PDisplay; screen: integer; AVisualid: TVisualID; depth: Longword; AProperty: TAtom; replace, retain: <a  href="CastleXlib.html#XBool">XBool</a>) :TStatus; cdecl; external <a  href="CastleXlib.html#XmuDLL">XmuDLL</a>;</code></td>
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<a name="PasDoc-Types"></a><h3 class="summary">Types</h3>
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<td class="itemcode"><code><b><a  href="CastleXlib.html#XBool">XBool</a></b> = Xlib.TBool;</code></td>
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<td class="itemcode"><code><b><a  href="CastleXlib.html#TXStandardColormap_Array">TXStandardColormap_Array</a></b> = array [0..High(Word)] of TXStandardColormap;</code></td>
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<td class="itemcode"><code><b><a  href="CastleXlib.html#PXStandardColormap_Array">PXStandardColormap_Array</a></b> = &circ;<a  href="CastleXlib.html#TXStandardColormap_Array">TXStandardColormap_Array</a>;</code></td>
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<a name="PasDoc-Constants"></a><h3 class="summary">Constants</h3>
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<td class="itemcode"><code><b><a  href="CastleXlib.html#XlibDLL">XlibDLL</a></b> = 'libX11.so';</code></td>
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<td class="itemcode"><code><b><a  href="CastleXlib.html#XmuDLL">XmuDLL</a></b> = 'libXmu.so';</code></td>
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<td class="itemcode"><code><b><a  href="CastleXlib.html#XBool_true">XBool_true</a></b> =  1 ;</code></td>
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<td class="itemcode"><code><b><a  href="CastleXlib.html#XBool_false">XBool_false</a></b> =  0 ;</code></td>
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<h2 class="description">Description</h2>
<h3 class="detail">Functions and Procedures</h3>
<table class="detail wide_list">
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<td class="itemcode"><a name="XSetStandardProperties"></a><code>function <b>XSetStandardProperties</b>(dpy: PDisplay; win: TWindow; window_name: pchar; icon_name: pchar; icon_pixmap: TPixmap; argv: PPChar; argc: Integer; hints: PXSizeHints): integer; cdecl; external <a  href="CastleXlib.html#XlibDLL">XLibDLL</a>;</code></td>
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<td class="itemcode"><a name="XSetStandardProperties_Pascal"></a><code>function <b>XSetStandardProperties_Pascal</b>(dpy: PDisplay; win: TWindow; window_name: pchar; icon_name: pchar; icon_pixmap: TPixmap; hints: PXSizeHints) :integer;</code></td>
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<td class="itemcode"><a name="XSetWMProperties_Pascal"></a><code>procedure <b>XSetWMProperties_Pascal</b>(Display: PDisplay; W: TWindow; WindowName: PXTextProperty; IconName: PXTextProperty; NormalHints: PXSizeHints; WMHints: PXWMHints; ClassHints: PXClassHint);</code></td>
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&nbsp;</td></tr>
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<table class="detail wide_list">
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<td class="itemcode"><a name="XParseGeometry"></a><code>function <b>XParseGeometry</b>(parsestring: PChar; x_return, y_return: PInteger; width_return, height_return: <a  href="CastleUtils.html#PLongWord">PLongWord</a>): integer; cdecl; external <a  href="CastleXlib.html#XlibDLL">XlibDLL</a>;</code></td>
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&nbsp;</td></tr>
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<table class="detail wide_list">
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<td class="itemcode"><a name="XmuLookupStandardColormap"></a><code>function <b>XmuLookupStandardColormap</b>(dpy: PDisplay; screen: integer; AVisualid: TVisualID; depth: Longword; AProperty: TAtom; replace, retain: <a  href="CastleXlib.html#XBool">XBool</a>) :TStatus; cdecl; external <a  href="CastleXlib.html#XmuDLL">XmuDLL</a>;</code></td>
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&nbsp;</td></tr>
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<h3 class="detail">Types</h3>
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<td class="itemcode"><a name="XBool"></a><code><b>XBool</b> = Xlib.TBool;</code></td>
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&nbsp;</td></tr>
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<td class="itemcode"><a name="TXStandardColormap_Array"></a><code><b>TXStandardColormap_Array</b> = array [0..High(Word)] of TXStandardColormap;</code></td>
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&nbsp;</td></tr>
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<table class="detail wide_list">
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<td class="itemcode"><a name="PXStandardColormap_Array"></a><code><b>PXStandardColormap_Array</b> = &circ;<a  href="CastleXlib.html#TXStandardColormap_Array">TXStandardColormap_Array</a>;</code></td>
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&nbsp;</td></tr>
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<h3 class="detail">Constants</h3>
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<td class="itemcode"><a name="XlibDLL"></a><code><b>XlibDLL</b> = 'libX11.so';</code></td>
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&nbsp;</td></tr>
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<td class="itemcode"><a name="XmuDLL"></a><code><b>XmuDLL</b> = 'libXmu.so';</code></td>
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&nbsp;</td></tr>
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<td class="itemcode"><a name="XBool_true"></a><code><b>XBool_true</b> =  1 ;</code></td>
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&nbsp;</td></tr>
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<td class="itemcode"><a name="XBool_false"></a><code><b>XBool_false</b> =  0 ;</code></td>
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&nbsp;</td></tr>
</table>
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