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annotate src/video/Xext/extensions/extutil.h @ 512:fd7d603845dd

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*** empty log message ***
author Sam Lantinga <slouken@libsdl.org>
date Sun, 06 Oct 2002 18:38:12 +0000
parents eadc0746dfaf
children 045f186426e1
rev   line source
292
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1 /*
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2 * $Xorg: extutil.h,v 1.4 2001/02/09 02:03:24 xorgcvs Exp $
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3 *
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4 Copyright 1989, 1998 The Open Group
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5
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6 Permission to use, copy, modify, distribute, and sell this software and its
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7 documentation for any purpose is hereby granted without fee, provided that
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8 the above copyright notice appear in all copies and that both that
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9 copyright notice and this permission notice appear in supporting
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10 documentation.
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11
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12 The above copyright notice and this permission notice shall be included in
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13 all copies or substantial portions of the Software.
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14
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15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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18 OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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19 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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20 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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21
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22 Except as contained in this notice, the name of The Open Group shall not be
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23 used in advertising or otherwise to promote the sale, use or other dealings
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24 in this Software without prior written authorization from The Open Group.
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25 *
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26 * Author: Jim Fulton, MIT The Open Group
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27 *
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28 * Xlib Extension-Writing Utilities
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29 *
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30 * This package contains utilities for writing the client API for various
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31 * protocol extensions. THESE INTERFACES ARE NOT PART OF THE X STANDARD AND
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32 * ARE SUBJECT TO CHANGE!
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33 */
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34 /* $XFree86: xc/include/extensions/extutil.h,v 1.9 2001/12/14 19:53:28 dawes Exp $ */
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35
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36 #ifndef _EXTUTIL_H_
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37 #define _EXTUTIL_H_
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38
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39 #include <X11/extensions/Xext.h>
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40
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41 /*
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42 * We need to keep a list of open displays since the Xlib display list isn't
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43 * public. We also have to per-display info in a separate block since it isn't
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44 * stored directly in the Display structure.
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45 */
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46 typedef struct _XExtDisplayInfo {
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47 struct _XExtDisplayInfo *next; /* keep a linked list */
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48 Display *display; /* which display this is */
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49 XExtCodes *codes; /* the extension protocol codes */
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50 XPointer data; /* extra data for extension to use */
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51 } XExtDisplayInfo;
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52
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53 typedef struct _XExtensionInfo {
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54 XExtDisplayInfo *head; /* start of list */
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55 XExtDisplayInfo *cur; /* most recently used */
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56 int ndisplays; /* number of displays */
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57 } XExtensionInfo;
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58
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59 typedef struct _XExtensionHooks {
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60 int (*create_gc)(
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61 #if NeedNestedPrototypes
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62 Display* /* display */,
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63 GC /* gc */,
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64 XExtCodes* /* codes */
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65 #endif
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66 );
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67 int (*copy_gc)(
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68 #if NeedNestedPrototypes
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69 Display* /* display */,
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70 GC /* gc */,
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71 XExtCodes* /* codes */
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72 #endif
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73 );
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74 int (*flush_gc)(
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75 #if NeedNestedPrototypes
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76 Display* /* display */,
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77 GC /* gc */,
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78 XExtCodes* /* codes */
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79 #endif
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80 );
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81 int (*free_gc)(
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82 #if NeedNestedPrototypes
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83 Display* /* display */,
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84 GC /* gc */,
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85 XExtCodes* /* codes */
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86 #endif
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87 );
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88 int (*create_font)(
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89 #if NeedNestedPrototypes
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90 Display* /* display */,
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91 XFontStruct* /* fs */,
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92 XExtCodes* /* codes */
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93 #endif
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94 );
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95 int (*free_font)(
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96 #if NeedNestedPrototypes
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97 Display* /* display */,
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98 XFontStruct* /* fs */,
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99 XExtCodes* /* codes */
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100 #endif
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101 );
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102 int (*close_display)(
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103 #if NeedNestedPrototypes
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104 Display* /* display */,
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105 XExtCodes* /* codes */
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106 #endif
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107 );
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108 Bool (*wire_to_event)(
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109 #if NeedNestedPrototypes
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110 Display* /* display */,
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111 XEvent* /* re */,
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112 xEvent* /* event */
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113 #endif
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114 );
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115 Status (*event_to_wire)(
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116 #if NeedNestedPrototypes
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117 Display* /* display */,
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118 XEvent* /* re */,
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119 xEvent* /* event */
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120 #endif
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121 );
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122 int (*error)(
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123 #if NeedNestedPrototypes
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124 Display* /* display */,
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125 xError* /* err */,
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126 XExtCodes* /* codes */,
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127 int* /* ret_code */
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128 #endif
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129 );
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130 char *(*error_string)(
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131 #if NeedNestedPrototypes
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132 Display* /* display */,
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133 int /* code */,
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134 XExtCodes* /* codes */,
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135 char* /* buffer */,
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136 int /* nbytes */
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137 #endif
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138 );
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139 } XExtensionHooks;
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140
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141 extern XExtensionInfo *XextCreateExtension(
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142 #if NeedFunctionPrototypes
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143 void
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144 #endif
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145 );
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146 extern void XextDestroyExtension(
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147 #if NeedFunctionPrototypes
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148 XExtensionInfo* /* info */
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149 #endif
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150 );
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151 extern XExtDisplayInfo *XextAddDisplay(
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152 #if NeedFunctionPrototypes
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153 XExtensionInfo* /* extinfo */,
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154 Display* /* dpy */,
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155 char* /* ext_name */,
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156 XExtensionHooks* /* hooks */,
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157 int /* nevents */,
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158 XPointer /* data */
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159 #endif
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160 );
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161 extern int XextRemoveDisplay(
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162 #if NeedFunctionPrototypes
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163 XExtensionInfo* /* extinfo */,
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164 Display* /* dpy */
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165 #endif
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166 );
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167 extern XExtDisplayInfo *XextFindDisplay(
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168 #if NeedFunctionPrototypes
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169 XExtensionInfo* /* extinfo */,
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170 Display* /* dpy */
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171 #endif
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172 );
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173
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174 #define XextHasExtension(i) ((i) && ((i)->codes))
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175 #define XextCheckExtension(dpy,i,name,val) \
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176 if (!XextHasExtension(i)) { XMissingExtension (dpy, name); return val; }
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177 #define XextSimpleCheckExtension(dpy,i,name) \
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178 if (!XextHasExtension(i)) { XMissingExtension (dpy, name); return; }
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179
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180
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181 /*
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182 * helper macros to generate code that is common to all extensions; caller
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183 * should prefix it with static if extension source is in one file; this
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184 * could be a utility function, but have to stack 6 unused arguments for
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185 * something that is called many, many times would be bad.
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186 */
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187 #define XEXT_GENERATE_FIND_DISPLAY(proc,extinfo,extname,hooks,nev,data) \
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188 XExtDisplayInfo *proc (Display *dpy) \
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189 { \
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190 XExtDisplayInfo *dpyinfo; \
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191 if (!extinfo) { if (!(extinfo = XextCreateExtension())) return NULL; } \
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192 if (!(dpyinfo = XextFindDisplay (extinfo, dpy))) \
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193 dpyinfo = XextAddDisplay (extinfo,dpy,extname,hooks,nev,data); \
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194 return dpyinfo; \
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195 }
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196
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197 #define XEXT_FIND_DISPLAY_PROTO(proc) \
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198 XExtDisplayInfo *proc(Display *dpy)
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199
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200 #define XEXT_GENERATE_CLOSE_DISPLAY(proc,extinfo) \
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201 int proc (Display *dpy, XExtCodes *codes) \
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202 { \
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203 return XextRemoveDisplay (extinfo, dpy); \
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204 }
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205
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206 #define XEXT_CLOSE_DISPLAY_PROTO(proc) \
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207 int proc(Display *dpy, XExtCodes *codes)
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208
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209 #define XEXT_GENERATE_ERROR_STRING(proc,extname,nerr,errl) \
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210 char *proc (Display *dpy, int code, XExtCodes *codes, char *buf, int n) \
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211 { \
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212 code -= codes->first_error; \
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213 if (code >= 0 && code < nerr) { \
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214 char tmp[256]; \
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215 sprintf (tmp, "%s.%d", extname, code); \
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216 XGetErrorDatabaseText (dpy, "XProtoError", tmp, errl[code], buf, n); \
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217 return buf; \
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218 } \
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219 return (char *)0; \
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220 }
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221
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222 #define XEXT_ERROR_STRING_PROTO(proc) \
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223 char *proc(Display *dpy, int code, XExtCodes *codes, char *buf, int n)
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224 #endif