# C1.Win.FlexGrid.Util.BaseControls.ScrollableControl.OnImeStartComposition

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<h1 id="C1_Win_FlexGrid_Util_BaseControls_ScrollableControl_OnImeStartComposition_" data-uid="C1.Win.FlexGrid.Util.BaseControls.ScrollableControl.OnImeStartComposition*">OnImeStartComposition Method
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<h4 id="C1_Win_FlexGrid_Util_BaseControls_ScrollableControl_OnImeStartComposition" data-uid="C1.Win.FlexGrid.Util.BaseControls.ScrollableControl.OnImeStartComposition">OnImeStartComposition()</h4>
<div class="markdown level1 summary"><p>Called when the control receives a WM_IME_STARTCOMPOSITION message.</p>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">protected virtual void OnImeStartComposition()</code></pre>
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  <pre><code class="lang-vbnet hljs">Protected Overridable Sub OnImeStartComposition()</code></pre>
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<h5 id="C1_Win_FlexGrid_Util_BaseControls_ScrollableControl_OnImeStartComposition_remarks">Remarks</h5>
<div class="markdown level1 remarks"><p>The WM_IME_STARTCOMPOSITION message is sent immediately before the IME generates
the composition string as a result of a keystroke. The message is a notification to
an IME window to open its composition window. An application should process this
message if it displays composition characters itself.</p>
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