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cristy307ba182010-12-25 01:00:34 +0000[diff] [blame]174<h1>Module exception
175 Methods</h1>
cristy3ed852e2009-09-05 21:47:34 +0000[diff] [blame]176<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>
177
178<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
179_8c.html" target="source" name="AcquireExceptionInfo">AcquireExceptionInfo</a></h2>
180<div class="doc-section">
181
182<p>AcquireExceptionInfo() allocates the ExceptionInfo structure.</p></ol>
183
184<p>The format of the AcquireExceptionInfo method is:</p>
185
186<pre class="code">
187 ExceptionInfo *AcquireExceptionInfo(void)
188</pre>
189
190 </div>
191<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
192_8c.html" target="source" name="ClearMagickException">ClearMagickException</a></h2>
193<div class="doc-section">
194
195<p>ClearMagickException() clears any exception that may not have been caught yet.</p></ol>
196
197<p>The format of the ClearMagickException method is:</p>
198
199<pre class="code">
200 ClearMagickException(ExceptionInfo *exception)
201</pre>
202
203<p>A description of each parameter follows:</p></ol>
204
205<h5>exception</h5>
206<ol><p>the exception info.</p></ol>
207
208 </div>
209<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
210_8c.html" target="source" name="CatchException">CatchException</a></h2>
211<div class="doc-section">
212
213<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>
214
215<p>The format of the CatchException method is:</p>
216
217<pre class="code">
218 CatchException(ExceptionInfo *exception)
219</pre>
220
221<p>A description of each parameter follows:</p></ol>
222
223<h5>exception</h5>
224<ol><p>the exception info.</p></ol>
225
226 </div>
227<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
228_8c.html" target="source" name="DestroyExceptionInfo">DestroyExceptionInfo</a></h2>
229<div class="doc-section">
230
231<p>DestroyExceptionInfo() deallocates memory associated with an exception.</p></ol>
232
233<p>The format of the DestroyExceptionInfo method is:</p>
234
235<pre class="code">
236 ExceptionInfo *DestroyExceptionInfo(ExceptionInfo *exception)
237</pre>
238
239<p>A description of each parameter follows:</p></ol>
240
241<h5>exception</h5>
242<ol><p>the exception info.</p></ol>
243
244 </div>
245<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
246_8c.html" target="source" name="GetExceptionInfo">GetExceptionInfo</a></h2>
247<div class="doc-section">
248
249<p>GetExceptionInfo() initializes an exception to default values.</p></ol>
250
251<p>The format of the GetExceptionInfo method is:</p>
252
253<pre class="code">
254 GetExceptionInfo(ExceptionInfo *exception)
255</pre>
256
257<p>A description of each parameter follows:</p></ol>
258
259<h5>exception</h5>
260<ol><p>the exception info.</p></ol>
261
262 </div>
263<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
264_8c.html" target="source" name="GetExceptionMessage">GetExceptionMessage</a></h2>
265<div class="doc-section">
266
267<p>GetExceptionMessage() returns the error message defined by the specified error code.</p></ol>
268
269<p>The format of the GetExceptionMessage method is:</p>
270
271<pre class="code">
272 char *GetExceptionMessage(const int error)
273</pre>
274
275<p>A description of each parameter follows:</p></ol>
276
277<h5>error</h5>
278<ol><p>the error code.</p></ol>
279
280 </div>
281<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
282_8c.html" target="source" name="GetLocaleExceptionMessage">GetLocaleExceptionMessage</a></h2>
283<div class="doc-section">
284
285<p>GetLocaleExceptionMessage() converts a enumerated exception severity and tag to a message in the current locale.</p></ol>
286
287<p>The format of the GetLocaleExceptionMessage method is:</p>
288
289<pre class="code">
290 const char *GetLocaleExceptionMessage(const ExceptionType severity,
291 const char *tag)
292</pre>
293
294<p>A description of each parameter follows:</p></ol>
295
296<h5>severity</h5>
297<ol><p>the severity of the exception.</p></ol>
298
299<h5>tag</h5>
300<ol><p>the message tag.</p></ol>
301
302 </div>
303<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
304_8c.html" target="source" name="InheritException">InheritException</a></h2>
305<div class="doc-section">
306
307<p>InheritException() inherits an exception from a related exception.</p></ol>
308
309<p>The format of the InheritException method is:</p>
310
311<pre class="code">
312 InheritException(ExceptionInfo *exception,const ExceptionInfo *relative)
313</pre>
314
315<p>A description of each parameter follows:</p></ol>
316
317<h5>exception</h5>
318<ol><p>the exception info.</p></ol>
319
320<h5>relative</h5>
321<ol><p>the related exception info.</p></ol>
322
323 </div>
324<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
325_8c.html" target="source" name="MagickError">MagickError</a></h2>
326<div class="doc-section">
327
328<p>MagickError() calls the exception handler methods with an error reason.</p></ol>
329
330<p>The format of the MagickError method is:</p>
331
332<pre class="code">
333 void MagickError(const ExceptionType error,const char *reason,
334 const char *description)
335</pre>
336
337<p>A description of each parameter follows:</p></ol>
338
339<h5>exception</h5>
340<ol><p>Specifies the numeric error category.</p></ol>
341
342<h5>reason</h5>
343<ol><p>Specifies the reason to display before terminating the program.</p></ol>
344
345<h5>description</h5>
346<ol><p>Specifies any description to the reason.</p></ol>
347
348 </div>
349<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
350_8c.html" target="source" name="MagickFatalError">MagickFatalError</a></h2>
351<div class="doc-section">
352
353<p>MagickFatalError() calls the fatal exception handler methods with an error reason.</p></ol>
354
355<p>The format of the MagickError method is:</p>
356
357<pre class="code">
358 void MagickFatalError(const ExceptionType error,const char *reason,
359 const char *description)
360</pre>
361
362<p>A description of each parameter follows:</p></ol>
363
364<h5>exception</h5>
365<ol><p>Specifies the numeric error category.</p></ol>
366
367<h5>reason</h5>
368<ol><p>Specifies the reason to display before terminating the program.</p></ol>
369
370<h5>description</h5>
371<ol><p>Specifies any description to the reason.</p></ol>
372
373 </div>
374<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
375_8c.html" target="source" name="MagickWarning">MagickWarning</a></h2>
376<div class="doc-section">
377
378<p>MagickWarning() calls the warning handler methods with a warning reason.</p></ol>
379
380<p>The format of the MagickWarning method is:</p>
381
382<pre class="code">
383 void MagickWarning(const ExceptionType warning,const char *reason,
384 const char *description)
385</pre>
386
387<p>A description of each parameter follows:</p></ol>
388
389<h5>warning</h5>
390<ol><p>the warning severity.</p></ol>
391
392<h5>reason</h5>
393<ol><p>Define the reason for the warning.</p></ol>
394
395<h5>description</h5>
396<ol><p>Describe the warning.</p></ol>
397
398 </div>
399<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
400_8c.html" target="source" name="SetErrorHandler">SetErrorHandler</a></h2>
401<div class="doc-section">
402
403<p>SetErrorHandler() sets the exception handler to the specified method and returns the previous exception handler.</p></ol>
404
405<p>The format of the SetErrorHandler method is:</p>
406
407<pre class="code">
408 ErrorHandler SetErrorHandler(ErrorHandler handler)
409</pre>
410
411<p>A description of each parameter follows:</p></ol>
412
413<h5>handler</h5>
414<ol><p>the method to handle errors.</p></ol>
415
416 </div>
417<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
418_8c.html" target="source" name="SetFatalErrorHandler">SetFatalErrorHandler</a></h2>
419<div class="doc-section">
420
421<p>SetFatalErrorHandler() sets the fatal exception handler to the specified method and returns the previous fatal exception handler.</p></ol>
422
423<p>The format of the SetErrorHandler method is:</p>
424
425<pre class="code">
426 ErrorHandler SetErrorHandler(ErrorHandler handler)
427</pre>
428
429<p>A description of each parameter follows:</p></ol>
430
431<h5>handler</h5>
432<ol><p>the method to handle errors.</p></ol>
433
434 </div>
435<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
436_8c.html" target="source" name="SetWarningHandler">SetWarningHandler</a></h2>
437<div class="doc-section">
438
439<p>SetWarningHandler() sets the warning handler to the specified method and returns the previous warning handler.</p></ol>
440
441<p>The format of the SetWarningHandler method is:</p>
442
443<pre class="code">
444 ErrorHandler SetWarningHandler(ErrorHandler handler)
445</pre>
446
447<p>A description of each parameter follows:</p></ol>
448
449<h5>handler</h5>
450<ol><p>the method to handle warnings.</p></ol>
451
452 </div>
453<h2><a href="http://www.imagemagick.org/api/MagickCore/exception
454_8c.html" target="source" name="ThrowException">ThrowException</a></h2>
455<div class="doc-section">
456
457<p>ThrowException() throws an exception with the specified severity code, reason, and optional description.</p></ol>
458
459<p>The format of the ThrowException method is:</p>
460
461<pre class="code">
462 MagickBooleanType ThrowException(ExceptionInfo *exception,
463 const ExceptionType severity,const char *reason,
464 const char *description)
465</pre>
466
467<p>A description of each parameter follows:</p></ol>
468
469<h5>exception</h5>
470<ol><p>the exception info.</p></ol>
471
472<h5>severity</h5>
473<ol><p>the severity of the exception.</p></ol>
474
475<h5>reason</h5>
476<ol><p>the reason for the exception.</p></ol>
477
478<h5>description</h5>
479<ol><p>the exception description.</p></ol>
480
481 </div>
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