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cristy307ba182010-12-25 01:00:34 +0000[diff] [blame]177<h1>Module exception
178 Methods</h1>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]179<p class="navigation-index">[<a href="#AcquireExceptionInfo">AcquireExceptionInfo</a> &bull; <a href="#ClearMagickException">ClearMagickException</a> &bull; <a href="#CatchException">CatchException</a> &bull; <a href="#DestroyExceptionInfo">DestroyExceptionInfo</a> &bull; <a href="#GetExceptionInfo">GetExceptionInfo</a> &bull; <a href="#GetExceptionMessage">GetExceptionMessage</a> &bull; <a href="#GetLocaleExceptionMessage">GetLocaleExceptionMessage</a> &bull; <a href="#InheritException">InheritException</a> &bull; <a href="#MagickError">MagickError</a> &bull; <a href="#MagickFatalError">MagickFatalError</a> &bull; <a href="#MagickWarning">MagickWarning</a> &bull; <a href="#SetErrorHandler">SetErrorHandler</a> &bull; <a href="#SetFatalErrorHandler">SetFatalErrorHandler</a> &bull; <a href="#SetWarningHandler">SetWarningHandler</a> &bull; <a href="#ThrowException">ThrowException</a>]</p>
180
181<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
182_8c.html" target="source" name="AcquireExceptionInfo">AcquireExceptionInfo</a></h2>
183<div class="doc-section">
184
185<p>AcquireExceptionInfo() allocates the ExceptionInfo structure.</p></ol>
186
187<p>The format of the AcquireExceptionInfo method is:</p>
188
189<pre class="code">
190 ExceptionInfo *AcquireExceptionInfo(void)
191</pre>
192
193 </div>
194<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
195_8c.html" target="source" name="ClearMagickException">ClearMagickException</a></h2>
196<div class="doc-section">
197
198<p>ClearMagickException() clears any exception that may not have been caught yet.</p></ol>
199
200<p>The format of the ClearMagickException method is:</p>
201
202<pre class="code">
203 ClearMagickException(ExceptionInfo *exception)
204</pre>
205
206<p>A description of each parameter follows:</p></ol>
207
208<h5>exception</h5>
209<ol><p>the exception info.</p></ol>
210
211 </div>
212<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
213_8c.html" target="source" name="CatchException">CatchException</a></h2>
214<div class="doc-section">
215
216<p>CatchException() returns if no exceptions is found otherwise it reports the exception as a warning, error, or fatal depending on the severity.</p></ol>
217
218<p>The format of the CatchException method is:</p>
219
220<pre class="code">
221 CatchException(ExceptionInfo *exception)
222</pre>
223
224<p>A description of each parameter follows:</p></ol>
225
226<h5>exception</h5>
227<ol><p>the exception info.</p></ol>
228
229 </div>
230<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
231_8c.html" target="source" name="DestroyExceptionInfo">DestroyExceptionInfo</a></h2>
232<div class="doc-section">
233
234<p>DestroyExceptionInfo() deallocates memory associated with an exception.</p></ol>
235
236<p>The format of the DestroyExceptionInfo method is:</p>
237
238<pre class="code">
239 ExceptionInfo *DestroyExceptionInfo(ExceptionInfo *exception)
240</pre>
241
242<p>A description of each parameter follows:</p></ol>
243
244<h5>exception</h5>
245<ol><p>the exception info.</p></ol>
246
247 </div>
248<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
249_8c.html" target="source" name="GetExceptionInfo">GetExceptionInfo</a></h2>
250<div class="doc-section">
251
252<p>GetExceptionInfo() initializes an exception to default values.</p></ol>
253
254<p>The format of the GetExceptionInfo method is:</p>
255
256<pre class="code">
257 GetExceptionInfo(ExceptionInfo *exception)
258</pre>
259
260<p>A description of each parameter follows:</p></ol>
261
262<h5>exception</h5>
263<ol><p>the exception info.</p></ol>
264
265 </div>
266<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
267_8c.html" target="source" name="GetExceptionMessage">GetExceptionMessage</a></h2>
268<div class="doc-section">
269
270<p>GetExceptionMessage() returns the error message defined by the specified error code.</p></ol>
271
272<p>The format of the GetExceptionMessage method is:</p>
273
274<pre class="code">
275 char *GetExceptionMessage(const int error)
276</pre>
277
278<p>A description of each parameter follows:</p></ol>
279
280<h5>error</h5>
281<ol><p>the error code.</p></ol>
282
283 </div>
284<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
285_8c.html" target="source" name="GetLocaleExceptionMessage">GetLocaleExceptionMessage</a></h2>
286<div class="doc-section">
287
288<p>GetLocaleExceptionMessage() converts a enumerated exception severity and tag to a message in the current locale.</p></ol>
289
290<p>The format of the GetLocaleExceptionMessage method is:</p>
291
292<pre class="code">
293 const char *GetLocaleExceptionMessage(const ExceptionType severity,
294 const char *tag)
295</pre>
296
297<p>A description of each parameter follows:</p></ol>
298
299<h5>severity</h5>
300<ol><p>the severity of the exception.</p></ol>
301
302<h5>tag</h5>
303<ol><p>the message tag.</p></ol>
304
305 </div>
306<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
307_8c.html" target="source" name="InheritException">InheritException</a></h2>
308<div class="doc-section">
309
310<p>InheritException() inherits an exception from a related exception.</p></ol>
311
312<p>The format of the InheritException method is:</p>
313
314<pre class="code">
315 InheritException(ExceptionInfo *exception,const ExceptionInfo *relative)
316</pre>
317
318<p>A description of each parameter follows:</p></ol>
319
320<h5>exception</h5>
321<ol><p>the exception info.</p></ol>
322
323<h5>relative</h5>
324<ol><p>the related exception info.</p></ol>
325
326 </div>
327<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
328_8c.html" target="source" name="MagickError">MagickError</a></h2>
329<div class="doc-section">
330
331<p>MagickError() calls the exception handler methods with an error reason.</p></ol>
332
333<p>The format of the MagickError method is:</p>
334
335<pre class="code">
336 void MagickError(const ExceptionType error,const char *reason,
337 const char *description)
338</pre>
339
340<p>A description of each parameter follows:</p></ol>
341
342<h5>exception</h5>
343<ol><p>Specifies the numeric error category.</p></ol>
344
345<h5>reason</h5>
346<ol><p>Specifies the reason to display before terminating the program.</p></ol>
347
348<h5>description</h5>
349<ol><p>Specifies any description to the reason.</p></ol>
350
351 </div>
352<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
353_8c.html" target="source" name="MagickFatalError">MagickFatalError</a></h2>
354<div class="doc-section">
355
356<p>MagickFatalError() calls the fatal exception handler methods with an error reason.</p></ol>
357
358<p>The format of the MagickError method is:</p>
359
360<pre class="code">
361 void MagickFatalError(const ExceptionType error,const char *reason,
362 const char *description)
363</pre>
364
365<p>A description of each parameter follows:</p></ol>
366
367<h5>exception</h5>
368<ol><p>Specifies the numeric error category.</p></ol>
369
370<h5>reason</h5>
371<ol><p>Specifies the reason to display before terminating the program.</p></ol>
372
373<h5>description</h5>
374<ol><p>Specifies any description to the reason.</p></ol>
375
376 </div>
377<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
378_8c.html" target="source" name="MagickWarning">MagickWarning</a></h2>
379<div class="doc-section">
380
381<p>MagickWarning() calls the warning handler methods with a warning reason.</p></ol>
382
383<p>The format of the MagickWarning method is:</p>
384
385<pre class="code">
386 void MagickWarning(const ExceptionType warning,const char *reason,
387 const char *description)
388</pre>
389
390<p>A description of each parameter follows:</p></ol>
391
392<h5>warning</h5>
393<ol><p>the warning severity.</p></ol>
394
395<h5>reason</h5>
396<ol><p>Define the reason for the warning.</p></ol>
397
398<h5>description</h5>
399<ol><p>Describe the warning.</p></ol>
400
401 </div>
402<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
403_8c.html" target="source" name="SetErrorHandler">SetErrorHandler</a></h2>
404<div class="doc-section">
405
406<p>SetErrorHandler() sets the exception handler to the specified method and returns the previous exception handler.</p></ol>
407
408<p>The format of the SetErrorHandler method is:</p>
409
410<pre class="code">
411 ErrorHandler SetErrorHandler(ErrorHandler handler)
412</pre>
413
414<p>A description of each parameter follows:</p></ol>
415
416<h5>handler</h5>
417<ol><p>the method to handle errors.</p></ol>
418
419 </div>
420<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
421_8c.html" target="source" name="SetFatalErrorHandler">SetFatalErrorHandler</a></h2>
422<div class="doc-section">
423
424<p>SetFatalErrorHandler() sets the fatal exception handler to the specified method and returns the previous fatal exception handler.</p></ol>
425
426<p>The format of the SetErrorHandler method is:</p>
427
428<pre class="code">
429 ErrorHandler SetErrorHandler(ErrorHandler handler)
430</pre>
431
432<p>A description of each parameter follows:</p></ol>
433
434<h5>handler</h5>
435<ol><p>the method to handle errors.</p></ol>
436
437 </div>
438<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
439_8c.html" target="source" name="SetWarningHandler">SetWarningHandler</a></h2>
440<div class="doc-section">
441
442<p>SetWarningHandler() sets the warning handler to the specified method and returns the previous warning handler.</p></ol>
443
444<p>The format of the SetWarningHandler method is:</p>
445
446<pre class="code">
447 ErrorHandler SetWarningHandler(ErrorHandler handler)
448</pre>
449
450<p>A description of each parameter follows:</p></ol>
451
452<h5>handler</h5>
453<ol><p>the method to handle warnings.</p></ol>
454
455 </div>
456<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
457_8c.html" target="source" name="ThrowException">ThrowException</a></h2>
458<div class="doc-section">
459
460<p>ThrowException() throws an exception with the specified severity code, reason, and optional description.</p></ol>
461
462<p>The format of the ThrowException method is:</p>
463
464<pre class="code">
465 MagickBooleanType ThrowException(ExceptionInfo *exception,
466 const ExceptionType severity,const char *reason,
467 const char *description)
468</pre>
469
470<p>A description of each parameter follows:</p></ol>
471
472<h5>exception</h5>
473<ol><p>the exception info.</p></ol>
474
475<h5>severity</h5>
476<ol><p>the severity of the exception.</p></ol>
477
478<h5>reason</h5>
479<ol><p>the reason for the exception.</p></ol>
480
481<h5>description</h5>
482<ol><p>the exception description.</p></ol>
483
484 </div>
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