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<h1>MInputDriver Struct Reference<br/>
<small>
[<a class="el" href="group__m17nInputMethod.html">Input Method (basic)</a>]</small>
</h1><!-- doxytag: class="MInputDriver" -->
<p>Structure of input method driver.
<a href="#_details">More...</a></p>
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<tr><td colspan="2"><h2>Data Fields</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int(* </td><td class="memItemRight" valign="bottom"><a class="el" href="structMInputDriver.html#a6de5d7d05acec89bf7e41b2f234082f7">open_im</a> )(<a class="el" href="structMInputMethod.html">MInputMethod</a> *im)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Open an input method. <a href="#a6de5d7d05acec89bf7e41b2f234082f7"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void(* </td><td class="memItemRight" valign="bottom"><a class="el" href="structMInputDriver.html#a6e9c0255e16e7a1039f0078c44a15fbb">close_im</a> )(<a class="el" href="structMInputMethod.html">MInputMethod</a> *im)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Close an input method. <a href="#a6e9c0255e16e7a1039f0078c44a15fbb"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int(* </td><td class="memItemRight" valign="bottom"><a class="el" href="structMInputDriver.html#ab5a159c0f0b8920b088db43c7a4f0064">create_ic</a> )(<a class="el" href="structMInputContext.html">MInputContext</a> *ic)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Create an input context. <a href="#ab5a159c0f0b8920b088db43c7a4f0064"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void(* </td><td class="memItemRight" valign="bottom"><a class="el" href="structMInputDriver.html#ace8401115ecab3c6a859d49665e48bd4">destroy_ic</a> )(<a class="el" href="structMInputContext.html">MInputContext</a> *ic)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Destroy an input context. <a href="#ace8401115ecab3c6a859d49665e48bd4"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int(* </td><td class="memItemRight" valign="bottom"><a class="el" href="structMInputDriver.html#a09e43f1c01e441351b7c0c5e16a129dc">filter</a> )(<a class="el" href="structMInputContext.html">MInputContext</a> *ic, <a class="el" href="group__m17nSymbol.html#ga0f53a95817f0b5c26442f8e12f89c16d">MSymbol</a> key, void *arg)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Filter an input key. <a href="#a09e43f1c01e441351b7c0c5e16a129dc"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int(* </td><td class="memItemRight" valign="bottom"><a class="el" href="structMInputDriver.html#a8b206e6ce988f1aeafac41efadf493af">lookup</a> )(<a class="el" href="structMInputContext.html">MInputContext</a> *ic, <a class="el" href="group__m17nSymbol.html#ga0f53a95817f0b5c26442f8e12f89c16d">MSymbol</a> key, void *arg, <a class="el" href="group__m17nMtext.html#gae8bba45315c15c8f79ec4a73ebc52aec">MText</a> *mt)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Lookup a produced text in an input context. <a href="#a8b206e6ce988f1aeafac41efadf493af"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__m17nPlist.html#gac8b2ac3c9a8f0a6afb7f189b694035e2">MPlist</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="structMInputDriver.html#a159fe7401cd0913dc8c480a18efeff64">callback_list</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">List of callback functions. <a href="#a159fe7401cd0913dc8c480a18efeff64"></a><br/></td></tr>
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<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>Structure of input method driver. </p>
<p>The type <code><a class="el" href="structMInputDriver.html" title="Structure of input method driver.">MInputDriver</a></code> is the structure of an input method driver that contains several functions to handle an input method. </p>
<hr/><h2>Field Documentation</h2>
<a class="anchor" id="a6de5d7d05acec89bf7e41b2f234082f7"></a><!-- doxytag: member="MInputDriver::open_im" ref="a6de5d7d05acec89bf7e41b2f234082f7" args=")(MInputMethod *im)" -->
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<td class="memname">int(* <a class="el" href="structMInputDriver.html#a6de5d7d05acec89bf7e41b2f234082f7">MInputDriver::open_im</a>)(<a class="el" href="structMInputMethod.html">MInputMethod</a> *im)</td>
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<p>Open an input method. </p>
<p>This function opens the input method <b>im</b>. It is called from the function <a class="el" href="group__m17nInputMethod.html#ga34d3e527bfd705d2b7f2b749199c1e11" title="Open an input method.">minput_open_im()</a> after all member of <b>im</b> but <info> set. If opening <b>im</b> succeeds, it returns 0. Otherwise, it returns -1. The function can setup <b>im->info</b> to keep various information that is referred by the other driver functions. </p>
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<a class="anchor" id="a6e9c0255e16e7a1039f0078c44a15fbb"></a><!-- doxytag: member="MInputDriver::close_im" ref="a6e9c0255e16e7a1039f0078c44a15fbb" args=")(MInputMethod *im)" -->
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<td class="memname">void(* <a class="el" href="structMInputDriver.html#a6e9c0255e16e7a1039f0078c44a15fbb">MInputDriver::close_im</a>)(<a class="el" href="structMInputMethod.html">MInputMethod</a> *im)</td>
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<p>Close an input method. </p>
<p>This function closes the input method <b>im</b>. It is called from the function <a class="el" href="group__m17nInputMethod.html#ga373b415d157c2507f4ca4a864836e905" title="Close an input method.">minput_close_im()</a>. It frees all memory allocated for <b>im->info</b> (if any) after finishing all the tasks of closing the input method. But, the other members of <b>im</b> should not be touched. </p>
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<a class="anchor" id="ab5a159c0f0b8920b088db43c7a4f0064"></a><!-- doxytag: member="MInputDriver::create_ic" ref="ab5a159c0f0b8920b088db43c7a4f0064" args=")(MInputContext *ic)" -->
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<td class="memname">int(* <a class="el" href="structMInputDriver.html#ab5a159c0f0b8920b088db43c7a4f0064">MInputDriver::create_ic</a>)(<a class="el" href="structMInputContext.html">MInputContext</a> *ic)</td>
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<p>Create an input context. </p>
<p>This function creates the input context <b>ic</b>. It is called from the function <a class="el" href="group__m17nInputMethod.html#ga8b32df84c645f73ed65e20a1d51c1859" title="Create an input context.">minput_create_ic()</a> after all members of <b>ic</b> but <info> are set. If creating <b>ic</b> succeeds, it returns 0. Otherwise, it returns -1. The function can setup <b>ic->info</b> to keep various information that is referred by the other driver functions. </p>
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<a class="anchor" id="ace8401115ecab3c6a859d49665e48bd4"></a><!-- doxytag: member="MInputDriver::destroy_ic" ref="ace8401115ecab3c6a859d49665e48bd4" args=")(MInputContext *ic)" -->
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<td class="memname">void(* <a class="el" href="structMInputDriver.html#ace8401115ecab3c6a859d49665e48bd4">MInputDriver::destroy_ic</a>)(<a class="el" href="structMInputContext.html">MInputContext</a> *ic)</td>
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<p>Destroy an input context. </p>
<p>This function is called from the function <a class="el" href="group__m17nInputMethod.html#ga80e4b330fb112883f2183d54b4e9c5bb" title="Destroy an input context.">minput_destroy_ic()</a> and destroys the input context <b>ic</b>. It frees all memory allocated for <b>ic->info</b> (if any) after finishing all the tasks of destroying the input method. But, the other members of <b>ic</b> should not be touched. </p>
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<a class="anchor" id="a09e43f1c01e441351b7c0c5e16a129dc"></a><!-- doxytag: member="MInputDriver::filter" ref="a09e43f1c01e441351b7c0c5e16a129dc" args=")(MInputContext *ic, MSymbol key, void *arg)" -->
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<td class="memname">int(* <a class="el" href="structMInputDriver.html#a09e43f1c01e441351b7c0c5e16a129dc">MInputDriver::filter</a>)(<a class="el" href="structMInputContext.html">MInputContext</a> *ic, <a class="el" href="group__m17nSymbol.html#ga0f53a95817f0b5c26442f8e12f89c16d">MSymbol</a> key, void *arg)</td>
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<p>Filter an input key. </p>
<p>This function is called from the function <a class="el" href="group__m17nInputMethod.html#ga6d9c3c97524114496fd8b7f70af92457" title="Filter an input key.">minput_filter()</a> and filters an input key. <b>key</b> and <b>arg</b> are the same as what given to <a class="el" href="group__m17nInputMethod.html#ga6d9c3c97524114496fd8b7f70af92457" title="Filter an input key.">minput_filter()</a>.</p>
<p>The task of the function is to handle <b>key</b>, update the internal state of <b>ic</b>. If <b>key</b> is absorbed by the input method and no text is produced, it returns 1. Otherwise, it returns 0.</p>
<p>It may update <b>ic->status</b>, <b>ic->preedit</b>, <b>ic->cursor_pos</b>, <b>ic->ncandidates</b>, <b>ic->candidates</b>, and <b>ic->produced</b> if that is necessary for the member <callback>.</p>
<p>The meaning of <b>arg</b> depends on the input method river. See the documentation of <code>minput_default_driver</code> and <code>minput_gui_driver</code> for instance. </p>
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<a class="anchor" id="a8b206e6ce988f1aeafac41efadf493af"></a><!-- doxytag: member="MInputDriver::lookup" ref="a8b206e6ce988f1aeafac41efadf493af" args=")(MInputContext *ic, MSymbol key, void *arg, MText *mt)" -->
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<td class="memname">int(* <a class="el" href="structMInputDriver.html#a8b206e6ce988f1aeafac41efadf493af">MInputDriver::lookup</a>)(<a class="el" href="structMInputContext.html">MInputContext</a> *ic, <a class="el" href="group__m17nSymbol.html#ga0f53a95817f0b5c26442f8e12f89c16d">MSymbol</a> key, void *arg, <a class="el" href="group__m17nMtext.html#gae8bba45315c15c8f79ec4a73ebc52aec">MText</a> *mt)</td>
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<p>Lookup a produced text in an input context. </p>
<p>It is called from the function <a class="el" href="group__m17nInputMethod.html#gafe533480c705b877189938a0eecb1b57" title="Look up a text produced in the input context.">minput_lookup()</a> and looks up a produced text in the input context <b>ic</b>. This function concatenate a text produced by the input key <b>key</b> (if any) to M-text <b>mt</b>. If <b>key</b> was correctly handled by the input method of <b>ic</b>, it returns 0. Otherwise, it returns 1.</p>
<p>The meaning of <b>arg</b> depends on the input method driver. See the documentation of <code>minput_default_driver</code> and <code>minput_gui_driver</code> for instance. </p>
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<td class="memname"><a class="el" href="group__m17nPlist.html#gac8b2ac3c9a8f0a6afb7f189b694035e2">MPlist</a>* <a class="el" href="structMInputDriver.html#a159fe7401cd0913dc8c480a18efeff64">MInputDriver::callback_list</a></td>
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<p>List of callback functions. </p>
<p>List of callback functions. Keys are one of <b>Minput_preedit_start</b>, <b>Minput_preedit_draw</b>, <b>Minput_preedit_done</b>, <b>Minput_status_start</b>, <b>Minput_status_draw</b>, <b>Minput_status_done</b>, <b>Minput_candidates_start</b>, <b>Minput_candidates_draw</b>, <b>Minput_candidates_done</b>, <b>Minput_set_spot</b>, <b>Minput_toggle</b>, <b>Minput_reset</b>, <b>Minput_get_surrounding_text</b>, <b>Minput_delete_surrounding_text</b>. Values are functions of type <a class="el" href="group__m17nInputMethod.html#ga93a20c4a45f229e921bc4a3e1aa85312" title="Type of input method callback functions.">MInputCallbackFunc</a>. </p>
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