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<div class="section" id="potential-incompatibilities-with-earlier-versions">
<h1>Potential Incompatibilities with Earlier Versions<a class="headerlink" href="#potential-incompatibilities-with-earlier-versions" title="Permalink to this headline">¶</a></h1>
<p>This section describes incompatibilities introduced by particular versions of
SIP. Normally these are the removal of previously deprecated features.</p>
<div class="section" id="sip-v4-10-1">
<h2>SIP v4.10.1<a class="headerlink" href="#sip-v4-10-1" title="Permalink to this headline">¶</a></h2>
<div class="section" id="newly-deprecated-features">
<h3>Newly Deprecated Features<a class="headerlink" href="#newly-deprecated-features" title="Permalink to this headline">¶</a></h3>
<p>The following parts of the <a class="reference external" href="c_api.html#ref-c-api"><em>C API</em></a> are now deprecated (but
still supported).</p>
<ul class="simple">
<li>The <tt class="docutils literal"><span class="pre">D</span></tt> format character of <a title="sipParseResult" class="reference external" href="c_api.html#sipParseResult"><tt class="xref docutils literal"><span class="pre">sipParseResult()</span></tt></a>.</li>
</ul>
</div>
</div>
<div class="section" id="sip-v4-8">
<h2>SIP v4.8<a class="headerlink" href="#sip-v4-8" title="Permalink to this headline">¶</a></h2>
<div class="section" id="truediv">
<h3>__truediv__<a class="headerlink" href="#truediv" title="Permalink to this headline">¶</a></h3>
<p>Prior to this version the <tt class="xref docutils literal"><span class="pre">__div__()</span></tt> special method implicitly defined the
<tt class="xref docutils literal"><span class="pre">__truediv__()</span></tt> special method. From this version the <tt class="xref docutils literal"><span class="pre">__truediv__()</span></tt>
special method must be explicitly defined.</p>
</div>
<div class="section" id="sipwrapper-user-member">
<h3>sipWrapper user Member<a class="headerlink" href="#sipwrapper-user-member" title="Permalink to this headline">¶</a></h3>
<p>Prior to this version the <a title="sipWrapper" class="reference external" href="c_api.html#sipWrapper"><tt class="xref docutils literal"><span class="pre">sipWrapper</span></tt></a> structure had a member called
<a title="user" class="reference external" href="c_api.html#user"><tt class="xref docutils literal"><span class="pre">user</span></tt></a> which is available for handwritten code to use. From this
version <a title="user" class="reference external" href="c_api.html#user"><tt class="xref docutils literal"><span class="pre">user</span></tt></a> is a member of the <a title="sipSimpleWrapper" class="reference external" href="c_api.html#sipSimpleWrapper"><tt class="xref docutils literal"><span class="pre">sipSimpleWrapper</span></tt></a> structure.</p>
<p><a title="sipWrapper" class="reference external" href="c_api.html#sipWrapper"><tt class="xref docutils literal"><span class="pre">sipWrapper</span></tt></a> pointers can be safely cast to <a title="sipSimpleWrapper" class="reference external" href="c_api.html#sipSimpleWrapper"><tt class="xref docutils literal"><span class="pre">sipSimpleWrapper</span></tt></a>
pointers, so if your code does something like:</p>
<div class="highlight-python"><pre>((sipWrapper *)obj)->user = an_object_reference;</pre>
</div>
<p>then you just need to change it to:</p>
<div class="highlight-python"><pre>((sipSimpleWrapper *)obj)->user = an_object_reference;</pre>
</div>
</div>
<div class="section" id="removal-of-previously-deprecated-features">
<h3>Removal of Previously Deprecated Features<a class="headerlink" href="#removal-of-previously-deprecated-features" title="Permalink to this headline">¶</a></h3>
<p>The following parts of the <a class="reference external" href="c_api.html#ref-c-api"><em>C API</em></a> have been removed.</p>
<ul class="simple">
<li>The <tt class="docutils literal"><span class="pre">a</span></tt>, <tt class="docutils literal"><span class="pre">A</span></tt>, <tt class="docutils literal"><span class="pre">M</span></tt>, <tt class="docutils literal"><span class="pre">N</span></tt>, <tt class="docutils literal"><span class="pre">O</span></tt>, <tt class="docutils literal"><span class="pre">P</span></tt> and <tt class="docutils literal"><span class="pre">T</span></tt> format characters
from <a title="sipBuildResult" class="reference external" href="c_api.html#sipBuildResult"><tt class="xref docutils literal"><span class="pre">sipBuildResult()</span></tt></a> and <a title="sipCallMethod" class="reference external" href="c_api.html#sipCallMethod"><tt class="xref docutils literal"><span class="pre">sipCallMethod()</span></tt></a>.</li>
<li>The <tt class="docutils literal"><span class="pre">a</span></tt>, <tt class="docutils literal"><span class="pre">A</span></tt>, <tt class="docutils literal"><span class="pre">L</span></tt> and <tt class="docutils literal"><span class="pre">M</span></tt> format characters from
<a title="sipParseResult" class="reference external" href="c_api.html#sipParseResult"><tt class="xref docutils literal"><span class="pre">sipParseResult()</span></tt></a>.</li>
<li><tt class="xref docutils literal"><span class="pre">sipConvertToCpp()</span></tt></li>
<li><tt class="xref docutils literal"><span class="pre">sipIsSubClassInstance()</span></tt></li>
<li><tt class="xref docutils literal"><span class="pre">sipTransfer()</span></tt></li>
<li>The <tt class="xref docutils literal"><span class="pre">transfer()</span></tt> function of the <a title="" class="reference external" href="python_api.html#module-sip"><tt class="xref docutils literal"><span class="pre">sip</span></tt></a> module.</li>
<li>The old-style generated type convertors.</li>
</ul>
<p>In addition the <a class="reference external" href="command_line.html#cmdoption-sip-a"><em class="xref">-a</em></a> command line option to <tt class="docutils literal"><span class="pre">configure.py</span></tt> has
been removed.</p>
</div>
<div class="section" id="removal-of-pyqt-specific-features">
<h3>Removal of PyTQt-specific Features<a class="headerlink" href="#removal-of-pyqt-specific-features" title="Permalink to this headline">¶</a></h3>
<p>The following PyTQt-specific support functions have been removed.</p>
<ul class="simple">
<li><tt class="xref docutils literal"><span class="pre">sipConnectRx()</span></tt></li>
<li><tt class="xref docutils literal"><span class="pre">sipDisconnectRx()</span></tt></li>
<li><tt class="xref docutils literal"><span class="pre">sipEmitSlot()</span></tt></li>
<li><tt class="xref docutils literal"><span class="pre">sipGetSender()</span></tt></li>
</ul>
</div>
<div class="section" id="id1">
<h3>Newly Deprecated Features<a class="headerlink" href="#id1" title="Permalink to this headline">¶</a></h3>
<p>The following parts of the <a class="reference external" href="c_api.html#ref-c-api"><em>C API</em></a> are now deprecated (but
still supported).</p>
<ul class="simple">
<li>The <a class="reference external" href="c_api.html#ref-type-objects"><em>Generated Type Objects</em></a>.</li>
<li>The <a class="reference external" href="c_api.html#ref-enum-type-objects"><em>Generated Named Enum Type Objects</em></a>.</li>
<li><a title="sipConvertFromInstance" class="reference external" href="c_api.html#sipConvertFromInstance"><tt class="xref docutils literal"><span class="pre">sipConvertFromInstance()</span></tt></a></li>
<li><a title="sipConvertFromMappedType" class="reference external" href="c_api.html#sipConvertFromMappedType"><tt class="xref docutils literal"><span class="pre">sipConvertFromMappedType()</span></tt></a></li>
<li><a title="sipConvertFromNamedEnum" class="reference external" href="c_api.html#sipConvertFromNamedEnum"><tt class="xref docutils literal"><span class="pre">sipConvertFromNamedEnum()</span></tt></a></li>
<li><a title="sipConvertFromNewInstance" class="reference external" href="c_api.html#sipConvertFromNewInstance"><tt class="xref docutils literal"><span class="pre">sipConvertFromNewInstance()</span></tt></a></li>
<li><a title="sipCanConvertToInstance" class="reference external" href="c_api.html#sipCanConvertToInstance"><tt class="xref docutils literal"><span class="pre">sipCanConvertToInstance()</span></tt></a></li>
<li><a title="sipCanConvertToMappedType" class="reference external" href="c_api.html#sipCanConvertToMappedType"><tt class="xref docutils literal"><span class="pre">sipCanConvertToMappedType()</span></tt></a></li>
<li><a title="sipConvertToInstance" class="reference external" href="c_api.html#sipConvertToInstance"><tt class="xref docutils literal"><span class="pre">sipConvertToInstance()</span></tt></a></li>
<li><a title="sipConvertToMappedType" class="reference external" href="c_api.html#sipConvertToMappedType"><tt class="xref docutils literal"><span class="pre">sipConvertToMappedType()</span></tt></a></li>
<li><a title="sipForceConvertToInstance" class="reference external" href="c_api.html#sipForceConvertToInstance"><tt class="xref docutils literal"><span class="pre">sipForceConvertToInstance()</span></tt></a></li>
<li><a title="sipForceConvertToMappedType" class="reference external" href="c_api.html#sipForceConvertToMappedType"><tt class="xref docutils literal"><span class="pre">sipForceConvertToMappedType()</span></tt></a></li>
<li><a title="sipClassName" class="reference external" href="c_api.html#sipClassName"><tt class="xref docutils literal"><span class="pre">sipClassName()</span></tt></a></li>
<li><a title="sipFindClass" class="reference external" href="c_api.html#sipFindClass"><tt class="xref docutils literal"><span class="pre">sipFindClass()</span></tt></a></li>
<li><a title="sipFindNamedEnum" class="reference external" href="c_api.html#sipFindNamedEnum"><tt class="xref docutils literal"><span class="pre">sipFindNamedEnum()</span></tt></a></li>
<li><a title="sipFindMappedType" class="reference external" href="c_api.html#sipFindMappedType"><tt class="xref docutils literal"><span class="pre">sipFindMappedType()</span></tt></a></li>
<li><a title="sipGetWrapper" class="reference external" href="c_api.html#sipGetWrapper"><tt class="xref docutils literal"><span class="pre">sipGetWrapper()</span></tt></a></li>
<li><a title="sipReleaseInstance" class="reference external" href="c_api.html#sipReleaseInstance"><tt class="xref docutils literal"><span class="pre">sipReleaseInstance()</span></tt></a></li>
<li><a title="sipReleaseMappedType" class="reference external" href="c_api.html#sipReleaseMappedType"><tt class="xref docutils literal"><span class="pre">sipReleaseMappedType()</span></tt></a></li>
<li><a title="sipWrapper_Check" class="reference external" href="c_api.html#sipWrapper_Check"><tt class="xref docutils literal"><span class="pre">sipWrapper_Check()</span></tt></a></li>
<li>The <tt class="docutils literal"><span class="pre">B</span></tt>, <tt class="docutils literal"><span class="pre">C</span></tt> and <tt class="docutils literal"><span class="pre">E</span></tt> format characters of <a title="sipBuildResult" class="reference external" href="c_api.html#sipBuildResult"><tt class="xref docutils literal"><span class="pre">sipBuildResult()</span></tt></a> and
<a title="sipCallMethod" class="reference external" href="c_api.html#sipCallMethod"><tt class="xref docutils literal"><span class="pre">sipCallMethod()</span></tt></a>.</li>
<li>The <tt class="docutils literal"><span class="pre">s</span></tt>, <tt class="docutils literal"><span class="pre">C</span></tt> and <tt class="docutils literal"><span class="pre">E</span></tt> format characters of <a title="sipParseResult" class="reference external" href="c_api.html#sipParseResult"><tt class="xref docutils literal"><span class="pre">sipParseResult()</span></tt></a>.</li>
</ul>
</div>
</div>
<div class="section" id="sip-v4-7-8">
<h2>SIP v4.7.8<a class="headerlink" href="#sip-v4-7-8" title="Permalink to this headline">¶</a></h2>
<div class="section" id="automatic-int-to-enum-conversions">
<h3>Automatic int to Enum Conversions<a class="headerlink" href="#automatic-int-to-enum-conversions" title="Permalink to this headline">¶</a></h3>
<p>This version allows a Python <tt class="docutils literal"><span class="pre">int</span></tt> object to be passed whenever an enum is
expected. This can mean that two signatures that were different with prior
versions are now the same as far as Python is concerned.</p>
<p>The <a class="reference external" href="annotations.html#aanno-Constrained"><tt class="xref docutils literal"><span class="pre">Constrained</span></tt></a> argument annotation can now be applied to an enum
argument to revert to the earlier behaviour.</p>
</div>
</div>
<div class="section" id="sip-v4-7-3">
<h2>SIP v4.7.3<a class="headerlink" href="#sip-v4-7-3" title="Permalink to this headline">¶</a></h2>
<div class="section" id="complementary-comparison-operators">
<h3>Complementary Comparison Operators<a class="headerlink" href="#complementary-comparison-operators" title="Permalink to this headline">¶</a></h3>
<p>Prior to this version SIP did not automatically generate missing complementary
comparison operators. Typically this was worked around by adding them
explicitly to the .sip files, even though they weren’t implemented in C++ and
relied on the C++ compiler calling the complementary operator that was
implemented.</p>
<p>A necessary change to the code generator meant that this not longer worked and
so SIP was changed to automatically generate any missing complementary
operators. If you have added such operators explicitly then you should remove
them or make them dependent on the particular version of SIP.</p>
</div>
</div>
<div class="section" id="sip-v4-4">
<h2>SIP v4.4<a class="headerlink" href="#sip-v4-4" title="Permalink to this headline">¶</a></h2>
<div class="section" id="convertfromtypecode-and-converttotypecode">
<h3>%ConvertFromTypeCode and %ConvertToTypeCode<a class="headerlink" href="#convertfromtypecode-and-converttotypecode" title="Permalink to this headline">¶</a></h3>
<p>Handwritten <a class="reference external" href="directives.html#directive-%ConvertFromTypeCode"><tt class="xref docutils literal"><span class="pre">%ConvertFromTypeCode</span></tt></a> and
<a class="reference external" href="directives.html#directive-%ConvertToTypeCode"><tt class="xref docutils literal"><span class="pre">%ConvertToTypeCode</span></tt></a> now have the responsibility for implementing
the <a class="reference external" href="annotations.html#aanno-Transfer"><tt class="xref docutils literal"><span class="pre">Transfer</span></tt></a> and <a class="reference external" href="annotations.html#aanno-TransferBack"><tt class="xref docutils literal"><span class="pre">TransferBack</span></tt></a> annotations.</p>
</div>
<div class="section" id="sip-build">
<h3>SIP_BUILD<a class="headerlink" href="#sip-build" title="Permalink to this headline">¶</a></h3>
<p>The <tt class="xref docutils literal"><span class="pre">SIP_BUILD</span></tt> C preprocessor symbol has been removed.</p>
</div>
<div class="section" id="id2">
<h3>Newly Deprecated Features<a class="headerlink" href="#id2" title="Permalink to this headline">¶</a></h3>
<p>The following parts of the <a class="reference external" href="c_api.html#ref-c-api"><em>C API</em></a> are now deprecated (but
still supported).</p>
<ul class="simple">
<li>The old-style generated type convertors.</li>
<li><tt class="xref docutils literal"><span class="pre">sipConvertToCpp()</span></tt></li>
<li><tt class="xref docutils literal"><span class="pre">sipIsSubClassInstance()</span></tt></li>
</ul>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="sphinxsidebar">
<div class="sphinxsidebarwrapper">
<h3><a href="index.html">Table Of Contents</a></h3>
<ul>
<li><a class="reference external" href="#">Potential Incompatibilities with Earlier Versions</a><ul>
<li><a class="reference external" href="#sip-v4-10-1">SIP v4.10.1</a><ul>
<li><a class="reference external" href="#newly-deprecated-features">Newly Deprecated Features</a></li>
</ul>
</li>
<li><a class="reference external" href="#sip-v4-8">SIP v4.8</a><ul>
<li><a class="reference external" href="#truediv">__truediv__</a></li>
<li><a class="reference external" href="#sipwrapper-user-member">sipWrapper user Member</a></li>
<li><a class="reference external" href="#removal-of-previously-deprecated-features">Removal of Previously Deprecated Features</a></li>
<li><a class="reference external" href="#removal-of-pyqt-specific-features">Removal of PyTQt-specific Features</a></li>
<li><a class="reference external" href="#id1">Newly Deprecated Features</a></li>
</ul>
</li>
<li><a class="reference external" href="#sip-v4-7-8">SIP v4.7.8</a><ul>
<li><a class="reference external" href="#automatic-int-to-enum-conversions">Automatic int to Enum Conversions</a></li>
</ul>
</li>
<li><a class="reference external" href="#sip-v4-7-3">SIP v4.7.3</a><ul>
<li><a class="reference external" href="#complementary-comparison-operators">Complementary Comparison Operators</a></li>
</ul>
</li>
<li><a class="reference external" href="#sip-v4-4">SIP v4.4</a><ul>
<li><a class="reference external" href="#convertfromtypecode-and-converttotypecode">%ConvertFromTypeCode and %ConvertToTypeCode</a></li>
<li><a class="reference external" href="#sip-build">SIP_BUILD</a></li>
<li><a class="reference external" href="#id2">Newly Deprecated Features</a></li>
</ul>
</li>
</ul>
</li>
</ul>
<h4>Previous topic</h4>
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title="previous chapter">Introduction</a></p>
<h4>Next topic</h4>
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title="next chapter">Installation</a></p>
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