c# - Toggling the window visibility instanciates new window -

-

i have modularized application prism. simple window (shell) displayed. shell contains taskbar icon invokes command toggle windows visibility. clicking taskbaricon creates new instance of shell instead of toggling visibility of original one. know why code not invoke method on first shell?

my bootstrapper

 protected override dependencyobject createshell()     {         var shell = servicelocator.current.getinstance<shell>();         registertypeifmissing(typeof(shell), typeof(shell), true);         return shell;      }      protected override void initializeshell()     {          var mainwindow = (shell)this.shell;         var regionmanager = servicelocator.current.getinstance<iregionmanager>();         application.current.mainwindow = mainwindow;         mainwindow.show(); }

my taskbaricon

<tb:taskbaricon             name="toolbaricon"           iconsource="/resources/images/icon.ico"           tooltiptext="some text"              leftclickcommand="{staticresource showwindowcommand}"/>

showwindowcommand

    public class showwindowcommand : icommand {     public void execute(object parameter)     {         servicelocator.current.getinstance<shell>().togglevisibility();     }      public bool canexecute(object parameter)     {         return true;     }     public event eventhandler canexecutechanged; }

shell.togglingvisibility()

public void togglevisibility()     {         if (this.visibility == system.windows.visibility.visible){             this.visibility = system.windows.visibility.collapsed;                         }         else         {             this.visibility = system.windows.visibility.visible;          }       }

you're not using singleton shell.

in createshell first a shell instance, register shell singleton. later on in showwindowcommand.execute singleton instance, not same non-singleton instance resolved before. how should container know first resolved instance later on used singleton? might have had resolved multiple instances before registering singleton...


Comments

Post a Comment

Popular posts from this blog

java - Run spring boot application error: Cannot instantiate interface org.springframework.context.ApplicationListener -

-
i have spring project , try make use spring boot , run @ embadded tomcat following : https://spring.io/guides/gs/rest-service/ this application //@configuration //@enableaspectjautoproxy @springbootapplication @componentscan(basepackages = "gux.prome") public class application { public static void main(string[] args) { springapplication.run(application.class, args); } } if use maven command: mvn spring-boot:run , project starts fine, need debug , run main method @ intelij, exception occurs: exception in thread "main" java.lang.illegalargumentexception: cannot instantiate interface org.springframework.context.applicationlistener : org.springframework.boot.logging.classpathloggingapplicationlistener @ org.springframework.boot.springapplication.createspringfactoriesinstances(springapplication.java:414) @ org.springframework.boot.springapplication.getspringfactoriesinstances(springapplication.java:394) @ org.springframework.bo...
Read more

reactjs - React router and this.props.children - how to pass state to this.props.children -

-
i'm using react-router first time , don't know how think in yet. here's how i'm loading components in nested routes. entry point .js reactdom.render( <router history={hashhistory} > <route path="/" component={app}> <route path="models" component={content}> </route> </router>, document.getelementbyid('app') ); app.js render: function() { return ( <div> <header /> {this.props.children} </div> ); } so child of app content component sent in. i'm using flux , app.js has state , listens changes, don't know how pass state down this.props.children. before using react-router app.js defines children explicitly, passing state natural don't see how now. using couple of react helper methods can add state, props , whatever else this.props.children render: function() { var children = react.ch...
Read more

Excel VBA "Microsoft Windows Common Controls 6.0 (SP6)" Location Changes -

-
i have excel workbook used generate quotations customers. there main page user inputs data, , there buttons generate various pdfs , send them customer. however, 1 user consistently getting error preventing generating , sending pdfs. i beleive "microsoft windows common controls 6.0 (sp6)". it's installed on users' computers. on mine, location "c:\windows\syswow64\mscomctl.ocx" on others "c:\windows\system32\mscomctl.ocx" the user experiencing issues on 32-bit machine, "mscomctl.ocx" file should in system32. have manually put in there, , pointed common controls reference in vba it. issue seems keep reverting looking in syswow64. since folder doesn't exist, can't find it, , can't produce pdfs. i thought perhaps issue user running older version of office (2007) there users on 2013 , 2016. thought perhaps mixture of 64-bit , 32-bit users. user gets sent workbook other users (as quotation process goes further, gets passed ...
Read more