</ iframe > </noscript> <!-- End Google Tag Manager (noscript) --> <div id="BeforeHeaderContent"> </div> <div id="HeaderContent"> <div id="ProjectTitle">Bitmap for UWP</div> <div id="PageTitle"><div id="PageTitleText">QueryInterfaceOrNull Method</div></div> </div> <div id="AfterHeaderContent"> <!-- Spacing --> <span id="ToggleAllSectionsLink" class="FunctionLink"> <label id="CollapseAllLabel">Collapse All</label> <label id="ExpandAllLabel" style="display: none;">Expand All</label> </span><!-- Spacing --> <span id="LanguageFilterPopupLink" class="PopupLink" data-popupcontentsource="#LanguageCheckboxes" data-popuptitle='Language Filter'> <label id="ShowAllLabel" for="LanguageFilterPopupLink"> Language Filter: All </label> <label id="MultipleLabel" for="LanguageFilterPopupLink" style="display: none;"> Language Filter: Multiple </label> <label id="VBAllLabel" for="LanguageFilterPopupLink" style="display: none;"> Language Filter: Visual Basic </label> <label id="VBLabel" for="LanguageFilterPopupLink" style="display: none;">Language Filter: Visual Basic (Declaration)</label> <label id="CSLabel" for="LanguageFilterPopupLink" style="display: none;">Language Filter: C#</label> </span> <div class="PopupContent" id="LanguageCheckboxes"> <input data-languagename="VB" id="VBLanguageCheckbox" type="checkbox" class="ToggleLanguageCheckbox" checked="true" data-toggleclass="FilteredContentVB"> <label class="LanguageFilter" for="VBCheckbox"> Visual Basic (Declaration) </label> <br><input data-languagename="CS" id="CSLanguageCheckbox" type="checkbox" class="ToggleLanguageCheckbox" checked="true" data-toggleclass="FilteredContentCS"> <label class="LanguageFilter" for="CSCheckbox"> C# </label> </div> </div> <div class="BreadcrumbsContainer"><table><tr><td> <a href="C1.UWP.DX.html">C1.UWP.DX Assembly</a> > <a href="C1.UWP.DX~C1.Util.DX_namespace.html">C1.Util.DX Namespace</a> > <a href="C1.UWP.DX~C1.Util.DX.ComObject.html">ComObject Class</a> : QueryInterfaceOrNull Method</td></tr></table></div> <div id="BodyContent"> <div class="DescriptionContent">Query instance for a particular COM GUID/interface support.</div> <div class="SectionHeading" id="overloadlistSectionHeading"><span class="SectionHeadingIcon"><!-- --></span><span class="SectionHeadingText">Overload List</span></div><div id="overloadlistSectionContent" class="SectionContent"><table class="FilteredItemListTable"><tr><th>Overload</th><th>Description</th></tr> <tr><td class="LinkCell"><a href="C1.UWP.DX~C1.Util.DX.ComObject~QueryInterfaceOrNull(Guid).html">QueryInterfaceOrNull(Guid)</a></td><td class="DescriptionCell">Query instance for a particular COM GUID/interface support. </td></tr> <tr><td class="LinkCell"><a href="C1.UWP.DX~C1.Util.DX.ComObject~QueryInterfaceOrNull``1(IntPtr).html">QueryInterfaceOrNull<T>(IntPtr)</a></td><td class="DescriptionCell">Queries a managed object for a particular COM interface support. </td></tr> <tr><td class="LinkCell"><a href="C1.UWP.DX~C1.Util.DX.ComObject~QueryInterfaceOrNull``1().html">QueryInterfaceOrNull<T>()</a></td><td class="DescriptionCell">Query Interface for a particular interface support. </td></tr> </table></div> <a name="exampleBookmark"></a> <a name="seealsobookmark"></a> <div class="SectionHeading" id="seealsoSectionHeading"><span class="SectionHeadingIcon"><!-- --></span><span class="SectionHeadingText">See Also</span></div><div id="seealsoSectionContent" class="SectionContent"><h4 class="subHeading">Reference</h4><p><a href="C1.UWP.DX~C1.Util.DX.ComObject.html">ComObject Class</a> <br><a href="C1.UWP.DX~C1.Util.DX.ComObject_members.html">ComObject Members</a> </p> </div> </div> <div id="FooterContent"> <p> </p><p> </p><hr style="height: 1px"><p>Copyright © <script type="text/javascript"> var theDate=new Date() document.write(theDate.getFullYear()) </script> GrapeCity, inc. All rights reserved.</p> </div> </body> </html>