141 lines
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141 lines
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<title>glib::translate::Stash - Rust</title>
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<p class='location'>Struct Stash</p><p class='location'><a href='../index.html'>glib</a>::<wbr><a href='index.html'>translate</a></p><script>window.sidebarCurrent = {name: 'Stash', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script>
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<h1 class='fqn'><span class='in-band'>Struct <a href='../index.html'>glib</a>::<wbr><a href='index.html'>translate</a>::<wbr><a class="struct" href=''>Stash</a></span><span class='out-of-band'><span id='render-detail'>
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<pre class='rust struct'>pub struct Stash<'a, P: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Copy.html" title="trait core::marker::Copy">Copy</a>, T: ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="../../glib/translate/trait.ToGlibPtr.html" title="trait glib::translate::ToGlibPtr">ToGlibPtr</a><'a, P>>(pub P, pub <T as <a class="trait" href="../../glib/translate/trait.ToGlibPtr.html" title="trait glib::translate::ToGlibPtr">ToGlibPtr</a><'a, P>>::<a class="type" href="../../glib/translate/trait.ToGlibPtr.html#associatedtype.Storage" title="type glib::translate::ToGlibPtr::Storage">Storage</a>);</pre><div class='docblock'><p>Helper type that stores temporary values used for translation.</p>
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<p><code>P</code> is the foreign type pointer and the first element of the tuple.</p>
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<p><code>T</code> is the Rust type that is translated.</p>
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<p>The second element of the tuple is the temporary storage defined
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by the implementation of <code>ToGlibPtr<P> for T</code></p>
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<p>Say you want to pass a <code>*mut GdkWindowAttr</code> to a foreign function. The <code>Stash</code>
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will own a <code>GdkWindowAttr</code> and a <code>CString</code> that <code>GdkWindowAttr::title</code> points into.</p>
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<div class='information'><div class='tooltip ignore'>ⓘ<span class='tooltiptext'>This example is not tested</span></div></div><pre class="rust rust-example-rendered ignore">
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<span class="kw">impl</span> <span class="op"><</span><span class="lifetime">'a</span><span class="op">></span> <span class="ident">ToGlibPtr</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">glib_ffi</span>::<span class="ident">GdkWindowAttr</span><span class="op">></span> <span class="kw">for</span> <span class="ident">WindowAttr</span> {
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<span class="kw">type</span> <span class="ident">Storage</span> <span class="op">=</span> (<span class="ident">Box</span><span class="op"><</span><span class="ident">glib_ffi</span>::<span class="ident">GdkWindowAttr</span><span class="op">></span>, <span class="ident">Stash</span><span class="op"><</span><span class="lifetime">'a</span>, <span class="kw-2">*</span><span class="kw">const</span> <span class="ident">c_char</span>, <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">>></span>);
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<span class="kw">fn</span> <span class="ident">to_glib_none</span>(<span class="kw-2">&</span><span class="lifetime">'a</span> <span class="self">self</span>) <span class="op">-></span> <span class="ident">Stash</span><span class="op"><</span><span class="kw-2">*</span><span class="kw-2">mut</span> <span class="ident">glib_ffi</span>::<span class="ident">GdkWindowAttr</span>, <span class="ident">WindowAttr</span><span class="op">></span> {
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<span class="kw">let</span> <span class="ident">title</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">title</span>.<span class="ident">to_glib_none</span>();
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<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">attrs</span> <span class="op">=</span> <span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">glib_ffi</span>::<span class="ident">GdkWindowAttr</span> {
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<span class="ident">title</span>: <span class="ident">title</span>.<span class="number">0</span>,
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<span class="comment">// ....</span>
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});
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<span class="ident">Stash</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="kw-2">*</span><span class="ident">attrs</span>, (<span class="ident">attrs</span>, <span class="ident">title</span>))
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}
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}</pre>
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