</ iframe > </noscript> <!-- End Google Tag Manager (noscript) --> <div id="BeforeHeaderContent"> </div> <div id="HeaderContent"> <div id="ProjectTitle">ComponentOne List 8.0 for ActiveX</div> <div id="PageTitle"><div id="PageTitleText">Postponing Illegal Operations in List Events</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> </div> <div class="BreadcrumbsContainer"><table><tr><td> <a href="databaseprogrammingtechniques.html">Database Programming Techniques</a> > Postponing Illegal Operations in List Events</td></tr></table></div> <div id="BodyContent"> <p>During most of the list events, database and other system operations are still pending, and certain operations are not allowed within these list events. To circumvent such limitations, you can use the <a href="postmsgmethod.html">PostMsg</a> method in conjunction with the <a href="posteventevent.html">PostEvent</a> event to postpone operations which are illegal within the list events. If the <a href="postmsgmethod.html">PostMsg</a> method is called, the list will fire the <a href="posteventevent.html">PostEvent</a> event with the MsgId of the corresponding <a href="postmsgmethod.html">PostMsg</a> invocation after all pending operations are completed. You can then safely perform all desired operations in the <a href="posteventevent.html">PostEvent</a> event.</p> <p>Please note that execution of the Visual Basic <strong>DoEvents</strong> function will cause the Windows message queue to be processed, thus causing execution of the <a href="posteventevent.html">PostEvent</a> events before the <strong>DoEvents</strong> returns.</p> <a name="seealsobookmark"></a> </div> <div id="FooterContent"> <p> </p><p> </p><hr style="height: 1px"><p>Copyright (c) <script type="text/javascript"> var theDate=new Date() document.write(theDate.getFullYear()) </script> GrapeCity, inc. All rights reserved. <script> $(document).ready(function() { if (!(window.self !== window.top)) { // Not running in a frameset // Get the page name var pageName = location.href.substring(location.href.lastIndexOf("/") + 1); if (pageName.indexOf("#") != -1) { pageName = pageName.substring(0, pageName.indexOf("#")); } // Append to webframe.html var framePage = "webframe.html#" + pageName; location.href = framePage; } }); </script></p> <a target="_blank" href="http://our.componentone.com/groups/">Product Support Forum</a> | <a target="_blank" href="http://feedback.componentone.com/forums/255792-activex-documentation">Documentation Feedback</a> </div> </body> </html>