465 lines
14 KiB
PHP
465 lines
14 KiB
PHP
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<title>ImageMagick: MagickCore, C API for ImageMagick: Dealing with Exceptions</title>
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<p class="text-center"><a href="exception.php#AcquireExceptionInfo">AcquireExceptionInfo</a> • <a href="exception.php#ClearMagickException">ClearMagickException</a> • <a href="exception.php#CatchException">CatchException</a> • <a href="exception.php#CloneExceptionInfo">CloneExceptionInfo</a> • <a href="exception.php#DestroyExceptionInfo">DestroyExceptionInfo</a> • <a href="exception.php#GetExceptionMessage">GetExceptionMessage</a> • <a href="exception.php#GetLocaleExceptionMessage">GetLocaleExceptionMessage</a> • <a href="exception.php#InheritException">InheritException</a> • <a href="exception.php#InitializeExceptionInfo">InitializeExceptionInfo</a> • <a href="exception.php#MagickError">MagickError</a> • <a href="exception.php#MagickFatalError">MagickFatalError</a> • <a href="exception.php#MagickWarning">MagickWarning</a> • <a href="exception.php#SetErrorHandler">SetErrorHandler</a> • <a href="exception.php#SetFatalErrorHandler">SetFatalErrorHandler</a> • <a href="exception.php#SetWarningHandler">SetWarningHandler</a> • <a href="exception.php#ThrowException">ThrowException</a></p>
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<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/exception_8c.html" id="AcquireExceptionInfo">AcquireExceptionInfo</a></h2>
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<p>AcquireExceptionInfo() allocates the ExceptionInfo structure.</p>
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<p>The format of the AcquireExceptionInfo method is:</p>
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<pre class="text">
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ExceptionInfo *AcquireExceptionInfo(void)
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</pre>
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<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/exception_8c.html" id="ClearMagickException">ClearMagickException</a></h2>
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<p>ClearMagickException() clears any exception that may not have been caught yet.</p>
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<p>The format of the ClearMagickException method is:</p>
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<pre class="text">
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ClearMagickException(ExceptionInfo *exception)
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</pre>
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<p>A description of each parameter follows:</p>
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<dd>
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</dd>
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<dd> </dd>
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<dl class="dl-horizontal">
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<dt>exception</dt>
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<dd>the exception info. </dd>
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<dd> </dd>
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</dl>
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<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/exception_8c.html" id="CatchException">CatchException</a></h2>
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<p>CatchException() returns if no exceptions is found otherwise it reports the exception as a warning, error, or fatal depending on the severity.</p>
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<p>The format of the CatchException method is:</p>
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<pre class="text">
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CatchException(ExceptionInfo *exception)
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</pre>
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<p>A description of each parameter follows:</p>
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<dd>
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</dd>
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<dd> </dd>
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<dl class="dl-horizontal">
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<dt>exception</dt>
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<dd>the exception info. </dd>
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<dd> </dd>
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</dl>
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<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/exception_8c.html" id="CloneExceptionInfo">CloneExceptionInfo</a></h2>
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<p>CloneExceptionInfo() clones the ExceptionInfo structure.</p>
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<p>The format of the CloneExceptionInfo method is:</p>
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<pre class="text">
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ExceptionInfo *CloneException(ExceptionInfo *exception)
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</pre>
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<p>A description of each parameter follows:</p>
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<dd>
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</dd>
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<dd> </dd>
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<dl class="dl-horizontal">
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<dt>exception</dt>
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<dd>the exception info. </dd>
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<dd> </dd>
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</dl>
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<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/exception_8c.html" id="DestroyExceptionInfo">DestroyExceptionInfo</a></h2>
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<p>DestroyExceptionInfo() deallocates memory associated with an exception.</p>
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<p>The format of the DestroyExceptionInfo method is:</p>
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<pre class="text">
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ExceptionInfo *DestroyExceptionInfo(ExceptionInfo *exception)
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</pre>
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<p>A description of each parameter follows:</p>
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<dd>
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</dd>
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<dd> </dd>
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<dl class="dl-horizontal">
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<dt>exception</dt>
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<dd>the exception info. </dd>
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<dd> </dd>
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</dl>
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<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/exception_8c.html" id="GetExceptionMessage">GetExceptionMessage</a></h2>
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<p>GetExceptionMessage() returns the error message defined by the specified error code.</p>
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<p>The format of the GetExceptionMessage method is:</p>
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<pre class="text">
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char *GetExceptionMessage(const int error)
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</pre>
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<p>A description of each parameter follows:</p>
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<dd>
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</dd>
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<dd> </dd>
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<dl class="dl-horizontal">
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<dt>error</dt>
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<dd>the error code. </dd>
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<dd> </dd>
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</dl>
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<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/exception_8c.html" id="GetLocaleExceptionMessage">GetLocaleExceptionMessage</a></h2>
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<p>GetLocaleExceptionMessage() converts a enumerated exception severity and tag to a message in the current locale.</p>
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<p>The format of the GetLocaleExceptionMessage method is:</p>
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<pre class="text">
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const char *GetLocaleExceptionMessage(const ExceptionType severity,
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const char *tag)
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</pre>
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<p>A description of each parameter follows:</p>
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<dd>
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</dd>
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<dd> </dd>
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<dl class="dl-horizontal">
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<dt>severity</dt>
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<dd>the severity of the exception. </dd>
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<dd> </dd>
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<dt>tag</dt>
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<dd>the message tag. </dd>
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<dd> </dd>
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</dl>
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<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/exception_8c.html" id="InheritException">InheritException</a></h2>
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<p>InheritException() inherits an exception from a related exception.</p>
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<p>The format of the InheritException method is:</p>
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<pre class="text">
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InheritException(ExceptionInfo *exception,const ExceptionInfo *relative)
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</pre>
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<p>A description of each parameter follows:</p>
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<dd>
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</dd>
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<dd> </dd>
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<dl class="dl-horizontal">
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<dt>exception</dt>
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<dd>the exception info. </dd>
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<dd> </dd>
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<dt>relative</dt>
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<dd>the related exception info. </dd>
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<dd> </dd>
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</dl>
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<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/exception_8c.html" id="InitializeExceptionInfo">InitializeExceptionInfo</a></h2>
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<p>InitializeExceptionInfo() initializes an exception to default values.</p>
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<p>The format of the InitializeExceptionInfo method is:</p>
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<pre class="text">
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InitializeExceptionInfo(ExceptionInfo *exception)
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</pre>
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<p>A description of each parameter follows:</p>
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<dd>
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</dd>
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<dd> </dd>
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<dl class="dl-horizontal">
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<dt>exception</dt>
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<dd>the exception info. </dd>
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<dd> </dd>
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</dl>
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<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/exception_8c.html" id="MagickError">MagickError</a></h2>
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<p>MagickError() calls the exception handler methods with an error reason.</p>
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<p>The format of the MagickError method is:</p>
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<pre class="text">
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void MagickError(const ExceptionType error,const char *reason,
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const char *description)
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</pre>
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<p>A description of each parameter follows:</p>
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<dd>
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</dd>
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<dd> </dd>
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<dl class="dl-horizontal">
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<dt>exception</dt>
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<dd>Specifies the numeric error category. </dd>
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<dd> </dd>
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<dt>reason</dt>
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<dd>Specifies the reason to display before terminating the program. </dd>
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<dd> </dd>
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<dt>description</dt>
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<dd>Specifies any description to the reason. </dd>
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<dd> </dd>
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</dl>
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<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/exception_8c.html" id="MagickFatalError">MagickFatalError</a></h2>
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<p>MagickFatalError() calls the fatal exception handler methods with an error reason.</p>
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<p>The format of the MagickError method is:</p>
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<pre class="text">
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void MagickFatalError(const ExceptionType error,const char *reason,
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const char *description)
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</pre>
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<p>A description of each parameter follows:</p>
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<dd>
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</dd>
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<dd> </dd>
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<dl class="dl-horizontal">
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<dt>exception</dt>
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<dd>Specifies the numeric error category. </dd>
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<dd> </dd>
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<dt>reason</dt>
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<dd>Specifies the reason to display before terminating the program. </dd>
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<dd> </dd>
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<dt>description</dt>
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<dd>Specifies any description to the reason. </dd>
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<dd> </dd>
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</dl>
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<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/exception_8c.html" id="MagickWarning">MagickWarning</a></h2>
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<p>MagickWarning() calls the warning handler methods with a warning reason.</p>
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<p>The format of the MagickWarning method is:</p>
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<pre class="text">
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void MagickWarning(const ExceptionType warning,const char *reason,
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const char *description)
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</pre>
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<p>A description of each parameter follows:</p>
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<dd>
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</dd>
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<dd> </dd>
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<dl class="dl-horizontal">
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<dt>warning</dt>
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<dd>the warning severity. </dd>
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<dd> </dd>
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<dt>reason</dt>
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<dd>Define the reason for the warning. </dd>
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<dd> </dd>
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<dt>description</dt>
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<dd>Describe the warning. </dd>
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<dd> </dd>
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</dl>
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<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/exception_8c.html" id="SetErrorHandler">SetErrorHandler</a></h2>
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<p>SetErrorHandler() sets the exception handler to the specified method and returns the previous exception handler.</p>
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<p>The format of the SetErrorHandler method is:</p>
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<pre class="text">
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ErrorHandler SetErrorHandler(ErrorHandler handler)
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</pre>
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<p>A description of each parameter follows:</p>
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<dd>
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</dd>
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<dd> </dd>
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<dl class="dl-horizontal">
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<dt>handler</dt>
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<dd>the method to handle errors. </dd>
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<dd> </dd>
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</dl>
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<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/exception_8c.html" id="SetFatalErrorHandler">SetFatalErrorHandler</a></h2>
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<p>SetFatalErrorHandler() sets the fatal exception handler to the specified method and returns the previous fatal exception handler.</p>
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<p>The format of the SetErrorHandler method is:</p>
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<pre class="text">
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ErrorHandler SetErrorHandler(ErrorHandler handler)
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</pre>
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<p>A description of each parameter follows:</p>
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<dd>
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</dd>
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<dd> </dd>
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<dl class="dl-horizontal">
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<dt>handler</dt>
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<dd>the method to handle errors. </dd>
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<dd> </dd>
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</dl>
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<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/exception_8c.html" id="SetWarningHandler">SetWarningHandler</a></h2>
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<p>SetWarningHandler() sets the warning handler to the specified method and returns the previous warning handler.</p>
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<p>The format of the SetWarningHandler method is:</p>
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<pre class="text">
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ErrorHandler SetWarningHandler(ErrorHandler handler)
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</pre>
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<p>A description of each parameter follows:</p>
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<dd>
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</dd>
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<dd> </dd>
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<dl class="dl-horizontal">
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<dt>handler</dt>
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<dd>the method to handle warnings. </dd>
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<dd> </dd>
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</dl>
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<h2><a href="http://nextgen.imagemagick.org/api/MagickCore/exception_8c.html" id="ThrowException">ThrowException</a></h2>
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<p>ThrowException() throws an exception with the specified severity code, reason, and optional description.</p>
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<p>The format of the ThrowException method is:</p>
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<pre class="text">
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MagickBooleanType ThrowException(ExceptionInfo *exception,
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const ExceptionType severity,const char *reason,
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const char *description)
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</pre>
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<p>A description of each parameter follows:</p>
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<dd>
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</dd>
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<dd> </dd>
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<dl class="dl-horizontal">
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<dt>exception</dt>
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<dd>the exception info. </dd>
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<dd> </dd>
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<dt>severity</dt>
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<dd>the severity of the exception. </dd>
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<dd> </dd>
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<dt>reason</dt>
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<dd>the reason for the exception. </dd>
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<dd> </dd>
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<dt>description</dt>
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<dd>the exception description. </dd>
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<dd> </dd>
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</dl>
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</div>
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