annotate packages/services/gfx/mw/current/src/demos/nxscribble/hre_api_internal.h @ 208:e0c0827131d1 ecos

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author jlarmour
date Mon, 20 May 2002 22:19:26 +0000
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1 /*
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2 * hre_api_internal.h: API functions, used by internal clients also.
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3 * Author: James Kempf
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4 * Created On: Tue Jan 12 12:52:27 1993
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5 * Last Modified By: James Kempf
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6 * Last Modified On: Fri Sep 23 13:50:48 1994
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7 * Update Count: 33
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8 * Copyright (c) 1994 by Sun Microsystems Computer Company
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9 * All rights reserved.
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10 *
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11 * Use and copying of this software and preparation of
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12 * derivative works based upon this software are permitted.
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13 * Any distribution of this software or derivative works
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14 * must comply with all applicable United States export control
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15 * laws.
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16 *
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17 * This software is made available as is, and Sun Microsystems
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18 * Computer Company makes no warranty about the software, its
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19 * performance, or its conformity to any specification
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20 */
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21
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22 #ifndef _HRE_API_INTERNAL_H_
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23
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24 #define _HRE_API_INTERNAL_H_
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25
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26 /*Need structs for return types.*/
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27
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28 #include <hre.h>
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29
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30 /*
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31 * ADMINISTRATION
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32 */
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33
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34 /*
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35 * recognizer_load - If directory is not NULL, then use it as a pathname
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36 * to find the recognizer. Otherwise, use the default naming conventions
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37 * to find the recognizer having file name name. The subset argument
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38 * contains a null-terminated array of names for character subsets which
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39 * the recognizer should translate.
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40 */
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41
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42 recognizer
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43 recognizer_load(char* directory,char* name,char** subset);
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44
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45 /*
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46 * recognizer_unload - Unload the recognizer.
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47 */
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48
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49 int
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50 recognizer_unload(recognizer rec);
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51
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52 /*
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53 * recognizer_get_info-Get a pointer to a rec_info
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54 * giving the locale and subsets supported by the recognizer, and shared
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55 * library pathname.
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56 */
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57
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58 const rec_info*
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59 recognizer_get_info(recognizer rec);
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60
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61
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62 /*
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63 * recognizer_manager_version-Return the version number string of the
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64 * recognition manager.
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65 */
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66
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67 const char* recognizer_manager_version(recognizer rec);
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68
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69 /*
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70 * recognizer_load_state-Get any recognizer state associated with name
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71 * in dir. Note that name may not be simple file name, since
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72 * there may be more than one file involved. Return 0 if successful,
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73 * -1 if not.
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74 */
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75
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76 int
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77 recognizer_load_state(recognizer rec,char* dir,char* name);
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78
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79 /*
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80 * recognizer_save_state-Save any recognizer state to name
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81 * in dir. Note that name may not be a simple file name, since
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82 * there may be more than one file involved. Return 0 if successful,
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83 * -1 if not.
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84 */
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85
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86 int
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87 recognizer_save_state(recognizer rec,char* dir,char* name);
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88
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89 /*
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90 * recognizer_error-Return the last error message, or NULL if none.
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91 */
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92
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93 char*
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94 recognizer_error(recognizer rec);
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95
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96 /*
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97 * DICTIONARIES
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98 */
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99
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100 /* recognizer_load_dictionary-Load a dictionary from the directory
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101 * dir and file name. Return the dictionary pointer if successful,
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102 * otherwise NULL.
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103 */
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104
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105 wordset
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106 recognizer_load_dictionary(recognizer rec,char* directory,char* name);
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107
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108 /* recoginzer_save_dictionary-Save the dictionary to the file. Return 0
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109 * successful, -1 if error occurs.
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110 */
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111
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112 int
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113 recognizer_save_dictionary(recognizer rec,char* dir,char* name,wordset dict);
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114
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115 /*
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116 * recognizer_free_dictionary-Free the dictionary. Return 0 if successful,
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117 * -1 if error occurs.
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118 */
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119
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120 int
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121 recognizer_free_dictionary(recognizer rec,wordset dict);
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122
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123 /*
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124 * recognizer_add_to_dictionary-Add the word to the dictionary. Return 0
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125 * if successful, -1 if error occurs.
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126 */
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127
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128 int
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129 recognizer_add_to_dictionary(recognizer rec,letterset* word,wordset dict);
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130
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131 /*
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132 * recognizer_delete_from_dictionary-Delete the word from the dictionary.
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133 * Return 0 if successful, -1 if error occurs.
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134 */
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135
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136 int
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137 recognizer_delete_from_dictionary(recognizer rec,letterset* word,wordset dict);
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138
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139 /*
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140 * TRANSLATION
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141 */
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142
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143 /* recognizer_set/get_context - Set/get the recognition context for
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144 * subsequent buffering and translation. recognizer_set_context()
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145 * returns -1 if an error occurs, otherwise 0. recognizer_get_context()
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146 * returns NULL if no context has been set. The context is copied to avoid
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147 * potential memory deallocation problems.
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148 */
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149
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150 int
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151 recognizer_set_context(recognizer rec,rc* rec_xt);
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152 rc*
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153 recognizer_get_context(recognizer rec);
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154
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155 /* recognizer_clear - Set stroke buffer to NULL and clear the context.
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156 * Returns -1 if an error occurred, otherwise 0. Both the context and the
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157 * stroke buffer are deallocated. If delete_points_p is true, delete the
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158 * points also.
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159 */
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160
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161 int
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162 recognizer_clear(recognizer rec,bool delete_points_p);
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163
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164 /* recognizer_get/set_buffer - Get/set the stroke buffer. The stroke buffer
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165 * is copied to avoid potential memory allocation problems. Returns -1 if
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166 * an error occurs, otherwise 0.
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167 */
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168
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169 int
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170 recognizer_get_buffer(recognizer rec, u_int* nstrokes,pen_stroke** strokes);
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171
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172 int
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173 recognizer_set_buffer(recognizer rec,u_int nstrokes,pen_stroke* strokes);
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174
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175 /* recognizer_translate - Copy the strokes argument into the stroke buffer and
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176 * translate the buffer. If correlate_p is true, then provide stroke
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177 * correlations as well. If either nstrokes is 0 or strokes is NULL, then
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178 * just translate the stroke buffer and return the translation. Return an
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179 * array of alternative translation segmentations in the ret pointer and the
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180 * number of alternatives in nret, or NULL and 0 if there is no translation.
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181 * The direction of segmentation is as specified by the rc_direction field in
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182 * the buffered recognition context. Returns -1 if an error occurred,
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183 * otherwise 0.
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184 */
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185
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186 int
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187 recognizer_translate(recognizer rec,
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188 u_int nstrokes,
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189 pen_stroke* strokes,
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190 bool correlate_p,
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191 int* nret,
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192 rec_alternative** ret);
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193
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194 /*
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195 * recognizer_get_extension_functions-Return a null terminated array
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196 * of functions providing extended functionality. Their interfaces
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197 * will change depending on the recognizer.
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198 */
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199
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200 rec_fn*
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201 recognizer_get_extension_functions(recognizer rec);
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202
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203
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204 /*
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205 * GESTURE SUPPORT
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206 */
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207
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208 /*
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209 * recognizer_get_gesture_names - Return a null terminated array of
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210 * character strings containing the gesture names.
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211 */
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212
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213 char**
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214 recognizer_get_gesture_names(recognizer rec);
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215
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216 /*
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217 * recognizer_set_gesture_action-Set the action function associated with the
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218 * name.
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219 */
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220
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221 xgesture
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222 recognizer_set_gesture_action(recognizer rec,
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223 char* name,
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224 xgesture fn,
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225 void* wsinof);
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226
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227 /*
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228 * The following functions are for deleting data structures returned
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229 * by the API functions.
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230 */
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231
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232
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233 void
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234 delete_rec_alternative_array(u_int nalter,
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235 rec_alternative* ra,
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236 bool delete_points_p);
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237
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238 void
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239 delete_rec_correlation(rec_correlation* corr,
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240 bool delete_points_p);
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241
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242 /*
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243 * These are used by clients to create arrays for passing to API
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244 * functions.
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245 */
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246
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247 pen_stroke*
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248 make_pen_stroke_array(u_int size);
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249 pen_stroke*
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250 initialize_pen_stroke(pen_stroke* ps,
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251 u_int npts,
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252 pen_point* pts,
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253 u_int nstate,
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254 u_int* trans,
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255 pen_state* state);
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256 void
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257 delete_pen_stroke_array(u_int size,pen_stroke* ps,bool delete_points_p);
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258
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259 pen_point*
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260 make_pen_point_array(u_int size);
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261 void
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262 delete_pen_point_array(pen_point* pp);
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263
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264 pen_stroke*
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265 copy_pen_stroke_array(u_int nstrokes,pen_stroke* strokes);
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266 pen_state*
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267 copy_pen_state_array(u_int nstate,pen_state* state);
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268 u_int*
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269 copy_state_trans_array(u_int ntrans,u_int* trans);
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270
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271 pen_state*
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272 make_pen_state_array(u_int size);
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273 pen_state*
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274 initialize_pen_state(pen_state* ps,
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275 u_short button,
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276 u_short pen,
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277 short pressure,
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278 double anglex,
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279 double angley,
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280 double barrelrotate);
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281 void
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282 delete_pen_state_array(pen_state* ps);
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283
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284 #endif
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285