Revision 409737 of Constants

<p>{{ Previous("Gecko Plugin API Reference/Structures") }} {{ Npapiref() }}</p>
<p>This section is a reference to the program definitions used by the Plug-in API. All program definitions are found in {{ Source("modules/plugin/base/public/npapi.h", "npapi.h") }}.</p>
<h2 id="Error_Codes">Error Codes</h2>
<table class="standard-table">
  <tbody>
    <tr>
      <td class="header">Code</td>
      <td class="header">Value</td>
      <td class="header">Description</td>
    </tr>
    <tr>
      <td><code>NPERR_NO_ERROR</code></td>
      <td>0</td>
      <td>No errors occurred.</td>
    </tr>
    <tr>
      <td><code>NPERR_GENERIC_ERROR</code></td>
      <td>1</td>
      <td>Error with no specific error code occurred.</td>
    </tr>
    <tr>
      <td><code>NPERR_INVALID_INSTANCE_ERROR</code></td>
      <td>2</td>
      <td>Invalid instance passed to the plug-in.</td>
    </tr>
    <tr>
      <td><code>NPERR_INVALID_FUNCTABLE_ERROR</code></td>
      <td>3</td>
      <td>Function table invalid.</td>
    </tr>
    <tr>
      <td><code>NPERR_MODULE_LOAD_FAILED_ERROR</code></td>
      <td>4</td>
      <td>Loading of plug-in failed.</td>
    </tr>
    <tr>
      <td><code>NPERR_OUT_OF_MEMORY_ERROR</code></td>
      <td>5</td>
      <td>Memory allocation failed.</td>
    </tr>
    <tr>
      <td><code>NPERR_INVALID_PLUGIN_ERROR</code></td>
      <td>6</td>
      <td>Plug-in missing or invalid.</td>
    </tr>
    <tr>
      <td><code>NPERR_INVALID_PLUGIN_DIR_ERROR</code></td>
      <td>7</td>
      <td>Plug-in directory missing or invalid.</td>
    </tr>
    <tr>
      <td><code>NPERR_INCOMPATIBLE_VERSION_ERROR</code></td>
      <td>8</td>
      <td>Versions of plug-in and Communicator do not match.</td>
    </tr>
    <tr>
      <td><code>NPERR_INVALID_PARAM</code></td>
      <td>9</td>
      <td>Parameter missing or invalid.</td>
    </tr>
    <tr>
      <td><code>NPERR_INVALID_URL</code></td>
      <td>10</td>
      <td>URL missing or invalid.</td>
    </tr>
    <tr>
      <td><code>NPERR_FILE_NOT_FOUND</code></td>
      <td>11</td>
      <td>File missing or invalid.</td>
    </tr>
    <tr>
      <td><code>NPERR_NO_DATA</code></td>
      <td>12</td>
      <td>Stream contains no data.</td>
    </tr>
    <tr>
      <td><code>NPERR_STREAM_NOT_SEEKABLE</code></td>
      <td>13</td>
      <td>Seekable stream expected.</td>
    </tr>
  </tbody>
</table>
<h2 id="Result_Codes">Result Codes</h2>
<table class="standard-table">
  <tbody>
    <tr>
      <td class="header">Constant</td>
      <td class="header">Value</td>
      <td class="header">Description</td>
    </tr>
    <tr>
      <td><code>NPRES_DONE</code></td>
      <td>0</td>
      <td>(Most common): Completed normally; all data was sent to the instance.</td>
    </tr>
    <tr>
      <td><code>NPRES_NETWORK_ERR</code></td>
      <td>1</td>
      <td>Stream failed due to problems with network, disk I/O, lack of memory, or other problems.</td>
    </tr>
    <tr>
      <td><code>NPRES_USER_BREAK</code></td>
      <td>2</td>
      <td>User canceled stream directly by clicking the Stop button or indirectly by some action such as deleting the instance or initiating higher-priority network operations.</td>
    </tr>
  </tbody>
</table>
<h2 id="Plug-in_Version_Constants">Plug-in Version Constants</h2>
<table class="standard-table">
  <tbody>
    <tr>
      <td class="header">Constant</td>
      <td class="header">Value</td>
      <td class="header">Description</td>
    </tr>
    <tr>
      <td><code>NP_VERSION_MAJOR</code></td>
      <td>0</td>
      <td>Major version number; changes with major code release number.</td>
    </tr>
    <tr>
      <td><code>NP_VERSION_MINOR</code></td>
      <td>22</td>
      <td>Minor version number; changes with point release number.</td>
    </tr>
  </tbody>
</table>
<h2 id="Version_Feature_Constants">Version Feature Constants</h2>
<table class="standard-table">
  <tbody>
    <tr>
      <td class="header">NPVERS Constant: Version Feature Information</td>
      <td class="header">Value</td>
      <td class="header">Description</td>
    </tr>
    <tr>
      <td><code>NPVERS_HAS_STREAMOUTPUT</code></td>
      <td>8</td>
      <td>Streaming data.</td>
    </tr>
    <tr>
      <td><code>NPVERS_HAS_NOTIFICATION</code></td>
      <td>9</td>
      <td>Notification of completion.</td>
    </tr>
    <tr>
      <td><code>NPVERS_HAS_LIVECONNECT</code></td>
      <td>9</td>
      <td>LiveConnect.</td>
    </tr>
    <tr>
      <td><code>NPVERS_WIN16_HAS_LIVECONNECT</code></td>
      <td>9</td>
      <td>LiveConnect (Win16).</td>
    </tr>
    <tr>
      <td><code>NPVERS_68K_HAS_LIVECONNECT</code></td>
      <td>11</td>
      <td>LiveConnect (68K).</td>
    </tr>
    <tr>
      <td><code>NPVERS_HAS_WINDOWLESS</code></td>
      <td>11</td>
      <td>Windowless plug-in.</td>
    </tr>
    <tr>
      <td><code>NPVERS_HAS_XPCONNECT_SCRIPTING</code></td>
      <td>13</td>
      <td>Plug-in is scriptable using XPConnect.</td>
    </tr>
    <tr>
      <td><code>NPVERS_HAS_NPRUNTIME_SCRIPTING</code></td>
      <td>14</td>
      <td>Plug-in is scriptable using NPRuntime.</td>
    </tr>
    <tr>
      <td><code>NPVERS_HAS_FORM_VALUES</code></td>
      <td>15</td>
      <td><code>NPPVformValue</code> <code>NPPVariable</code>s are supported.</td>
    </tr>
    <tr>
      <td><code>NPVERS_HAS_POPUPS_ENABLED_STATE</code></td>
      <td>16</td>
      <td>The <code>NPN_PushPopupsEnabledState()</code> and <code>NPN_PopPopupsEnabledState()</code> functions are supported.</td>
    </tr>
    <tr>
      <td><code>NPVERS_HAS_RESPONSE_HEADERS</code></td>
      <td>17</td>
      <td>NPStreams have response headers for HTTP streams.</td>
    </tr>
    <tr>
      <td><code>NPVERS_HAS_NPOBJECT_ENUM</code></td>
      <td>18</td>
      <td>The {{npapi("NPClass")}} in question has an <code>enumerate</code> field, which lets you enumerate the properties of an {{npapi("NPObject")}} of that class.</td>
    </tr>
  </tbody>
</table>
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