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<div class="title">wxRendererVersion Struct Reference<div class="ingroups"><a class="el" href="group__group__class__gdi.html">Graphics Device Interface (GDI)</a></div></div> </div>
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<p><code>#include <wx/renderer.h></code></p>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>This simple struct represents the <a class="el" href="classwx_renderer_native.html" title="First, a brief introduction to wxRendererNative and why it is needed.">wxRendererNative</a> interface version and is only used as the return value of <a class="el" href="classwx_renderer_native.html#af42af0da60489f1f54c8883f68bfdd42" title="This function is used for version checking: Load() refuses to load any shared libraries implementing ...">wxRendererNative::GetVersion()</a>. </p>
<p>The version has two components: the version itself and the age. If the main program and the renderer have different versions they are never compatible with each other because the version is only changed when an existing virtual function is modified or removed. The age, on the other hand, is incremented each time a new virtual method is added and so, at least for the compilers using a common C++ object model, the calling program is compatible with any renderer which has the age greater or equal to its age. This verification is done by <a class="el" href="structwx_renderer_version.html#ab9793f73e37789350c6843d08d3390d3" title="Checks if the main program is compatible with the renderer having the version ver, returns true if it is and false otherwise.">IsCompatible()</a> method.</p>
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<div><span class="lib">Library:</span>  <span class="lib_text"><a class="el" href="page_libs.html#page_libs_wxcore">wxCore</a></span></div><div><span class="category">Category:</span>  <span class="category_text"><a class="el" href="group__group__class__gdi.html">Graphics Device Interface (GDI)</a></span></div> </div><table class="memberdecls">
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<tr class="memitem:a273bc951616048d2b73aadfc1a981f7e"><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="structwx_renderer_version.html#a273bc951616048d2b73aadfc1a981f7e">wxRendererVersion</a> (int version_, int age_)</td></tr>
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<tr class="memitem:ab9793f73e37789350c6843d08d3390d3"><td class="memItemLeft" align="right" valign="top">static bool </td><td class="memItemRight" valign="bottom"><a class="el" href="structwx_renderer_version.html#ab9793f73e37789350c6843d08d3390d3">IsCompatible</a> (const <a class="el" href="structwx_renderer_version.html">wxRendererVersion</a> &ver)</td></tr>
<tr class="memdesc:ab9793f73e37789350c6843d08d3390d3"><td class="mdescLeft"> </td><td class="mdescRight">Checks if the main program is compatible with the renderer having the version <em>ver</em>, returns <span class="literal">true</span> if it is and <span class="literal">false</span> otherwise. <a href="#ab9793f73e37789350c6843d08d3390d3"></a><br/></td></tr>
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<tr class="memitem:a633486ac153923375764e8e6b23d942f"><td class="memItemLeft" align="right" valign="top">const int </td><td class="memItemRight" valign="bottom"><a class="el" href="structwx_renderer_version.html#a633486ac153923375764e8e6b23d942f">age</a></td></tr>
<tr class="memdesc:a633486ac153923375764e8e6b23d942f"><td class="mdescLeft"> </td><td class="mdescRight">The age component. <a href="#a633486ac153923375764e8e6b23d942f"></a><br/></td></tr>
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<tr class="memitem:ab91a12e1c5def44a3f3d08a744094c55"><td class="memItemLeft" align="right" valign="top">const int </td><td class="memItemRight" valign="bottom"><a class="el" href="structwx_renderer_version.html#ab91a12e1c5def44a3f3d08a744094c55">version</a></td></tr>
<tr class="memdesc:ab91a12e1c5def44a3f3d08a744094c55"><td class="mdescLeft"> </td><td class="mdescRight">The version component. <a href="#ab91a12e1c5def44a3f3d08a744094c55"></a><br/></td></tr>
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<td class="memname">wxRendererVersion::wxRendererVersion </td>
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<td class="paramtype">int </td>
<td class="paramname"><em>version_</em>, </td>
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<td class="paramname"><em>ver</em></td><td>)</td>
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<p>Checks if the main program is compatible with the renderer having the version <em>ver</em>, returns <span class="literal">true</span> if it is and <span class="literal">false</span> otherwise. </p>
<p>This method is used by <a class="el" href="classwx_renderer_native.html#a0536cd4ed40c392859d2e8ae37a3eaca" title="Load the renderer from the specified DLL, the returned pointer must be deleted by caller if not NULL ...">wxRendererNative::Load()</a> to determine whether a renderer can be used. </p>
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<p>The age component. </p>
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<p>The version component. </p>
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