BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Missing Tray Icon          BorlandTalk.com Forum Index -> C++ Builder (Native API) View previous topic :: View next topic   Author Message Vladimir Stefanovic Guest Posted: Sun May 01, 2005 6:41 pm    Post subject: Missing Tray Icon Hi, I noticed that in some circumstances (do not know the moment) a tray icon of my program is missing, although the task manager says that the app is running. The funy thing is that also many other tray icons are missing (not only mine) when that moment happens! I suppose that the programs that "survived" know about that problem and so has some additional code to add the icon again. Does anyone know something about that? The OS is XP SP2. -- Best regards, Vladimir Stefanovic Back to top Ed Mulroy [TeamB] Guest Posted: Sun May 01, 2005 7:57 pm    Post subject: Re: Missing Tray Icon You probably already know this, but just in case: Look to the tray icon area and find the button that appears as a circle containing a '<' symbol. Click on that button and it will move to the left and change to a '>', revealing more tray icons. .. Ed Quote: Vladimir Stefanovic wrote in message news:427522d4 (AT) newsgroups (DOT) borland.com... I noticed that in some circumstances (do not know the moment) a tray icon of my program is missing, although the task manager says that the app is running. The funy thing is that also many other tray icons are missing (not only mine) when that moment happens! I suppose that the programs that "survived" know about that problem and so has some additional code to add the icon again. Does anyone know something about that? The OS is XP SP2. Back to top Vladimir Stefanovic Guest Posted: Sun May 01, 2005 8:04 pm    Post subject: Re: Missing Tray Icon Yes, I know that This must be something different. I have found similar problems at Win98 & obsolete comctl32 file, but this is XP... He he, maybe the problem is missing symbols '<' & '>' and not my tray icon ;) -- Best regards, Vladimir Stefanovic "Ed Mulroy [TeamB]" <dont_email_me (AT) invalid (DOT) com> wrote Quote: You probably already know this, but just in case: Look to the tray icon area and find the button that appears as a circle containing a '<' symbol. Click on that button and it will move to the left and change to a '>', revealing more tray icons. . Ed Vladimir Stefanovic wrote in message news:427522d4 (AT) newsgroups (DOT) borland.com... I noticed that in some circumstances (do not know the moment) a tray icon of my program is missing, although the task manager says that the app is running. The funy thing is that also many other tray icons are missing (not only mine) when that moment happens! I suppose that the programs that "survived" know about that problem and so has some additional code to add the icon again. Does anyone know something about that? The OS is XP SP2. Back to top Remy Lebeau (TeamB) Guest Posted: Mon May 02, 2005 7:42 am    Post subject: Re: Missing Tray Icon "Vladimir Stefanovic" <antivari (AT) po (DOT) sbb.co.yu> wrote Quote: I noticed that in some circumstances (do not know the moment) a tray icon of my program is missing, although the task manager says that the app is running. The funy thing is that also many other tray icons are missing (not only mine) when that moment happens! That happens when the OS's shell program (explorer.exe) crashes and was re-started by the OS, thus every icon was lost when the System Tray was recreated. Those icons that "survived" were because their respective applications recognized the restart and re-added their icons accordingly. Quote: I suppose that the programs that "survived" know about that problem and so has some additional code to add the icon again. Yes. At program startup, use the RegisterWindowMessage() function to register the "TaskbarCreated" message. Then override your form's WndProc() method to catch that message. When your form receives the message, it means that the entire Taskbar, including the System Tray, has been recreated, so you can then re-add your icons at that time. Gambit Back to top Vladimir Stefanovic Guest Posted: Mon May 02, 2005 5:23 pm    Post subject: Re: Missing Tray Icon Thanks, This was nice to know. I never used RegisterWindowMessage() but I think I will succeed to implement that properly... and wait for the crash of the "explorer.exe" to see if my app is in the "survivors" boat. -- Best regards, Vladimir Stefanovic "Remy Lebeau (TeamB)" <no.spam (AT) no (DOT) spam.com> wrote Quote: "Vladimir Stefanovic" <antivari (AT) po (DOT) sbb.co.yu> wrote in message news:427522d4 (AT) newsgroups (DOT) borland.com... I noticed that in some circumstances (do not know the moment) a tray icon of my program is missing, although the task manager says that the app is running. The funy thing is that also many other tray icons are missing (not only mine) when that moment happens! That happens when the OS's shell program (explorer.exe) crashes and was re-started by the OS, thus every icon was lost when the System Tray was recreated. Those icons that "survived" were because their respective applications recognized the restart and re-added their icons accordingly. I suppose that the programs that "survived" know about that problem and so has some additional code to add the icon again. Yes. At program startup, use the RegisterWindowMessage() function to register the "TaskbarCreated" message. Then override your form's WndProc() method to catch that message. When your form receives the message, it means that the entire Taskbar, including the System Tray, has been recreated, so you can then re-add your icons at that time. Gambit Back to top Vladimir Stefanovic Guest Posted: Mon May 02, 2005 6:18 pm    Post subject: Re: Missing Tray Icon Remy, will this be enough? --- H --- private: // User declarations UINT WM_TASKBARRECREATED; --- CPP --- __fastcall TForm1::TForm1(TComponent* Owner) : TForm(Owner) { // ... WM_TASKBARRECREATED = RegisterWindowMessage( "TaskbarCreated" ); // ... } void __fastcall TForm1::WndProc( TMessage &Msg ) { if ( ( Msg.Msg != 0 ) && ( Msg.Msg == WM_TASKBARRECREATED ) ) { DoSomethingToRecreateTrayIcon(); } // ... } -- Best regards, Vladimir Stefanovic "Remy Lebeau (TeamB)" <no.spam (AT) no (DOT) spam.com> wrote Quote: "Vladimir Stefanovic" <antivari (AT) po (DOT) sbb.co.yu> wrote in message news:427522d4 (AT) newsgroups (DOT) borland.com... I noticed that in some circumstances (do not know the moment) a tray icon of my program is missing, although the task manager says that the app is running. The funy thing is that also many other tray icons are missing (not only mine) when that moment happens! That happens when the OS's shell program (explorer.exe) crashes and was re-started by the OS, thus every icon was lost when the System Tray was recreated. Those icons that "survived" were because their respective applications recognized the restart and re-added their icons accordingly. I suppose that the programs that "survived" know about that problem and so has some additional code to add the icon again. Yes. At program startup, use the RegisterWindowMessage() function to register the "TaskbarCreated" message. Then override your form's WndProc() method to catch that message. When your form receives the message, it means that the entire Taskbar, including the System Tray, has been recreated, so you can then re-add your icons at that time. Gambit Back to top Remy Lebeau (TeamB) Guest Posted: Mon May 02, 2005 7:05 pm    Post subject: Re: Missing Tray Icon "Vladimir Stefanovic" <antivari (AT) po (DOT) sbb.co.yu> wrote Quote: UINT WM_TASKBARRECREATED; You should not use capitals like that in variable names. Use something more like this instead: UINT uTaskbarCreatedMSg; Quote: WM_TASKBARRECREATED = RegisterWindowMessage( "TaskbarCreated" ); uTaskbarCreatedMsg = RegisterWindowMessage("TaskbarCreated"); Quote: if ( ( Msg.Msg != 0 ) && ( Msg.Msg == WM_TASKBARRECREATED ) ) That should be the following instead. You are not checking the return value of RegisterWindowMessage() for 0 properly: if( (uTaskbarCreatedMsg != 0) && (Msg.Msg == uTaskbarCreatedMsg) ) Gambit Back to top Vladimir Stefanovic Guest Posted: Mon May 02, 2005 7:15 pm    Post subject: Re: Missing Tray Icon Quote: UINT WM_TASKBARRECREATED; You should not use capitals like that in variable names. Use something more like this instead: UINT uTaskbarCreatedMSg; Ok! Now I changed that... Quote: WM_TASKBARRECREATED = RegisterWindowMessage( "TaskbarCreated" ); uTaskbarCreatedMsg = RegisterWindowMessage("TaskbarCreated"); if ( ( Msg.Msg != 0 ) && ( Msg.Msg == WM_TASKBARRECREATED ) ) That should be the following instead. You are not checking the return value of RegisterWindowMessage() for 0 properly: if( (uTaskbarCreatedMsg != 0) && (Msg.Msg == uTaskbarCreatedMsg) ) Oh, I overlooked that. Thanks for looking sharp... -- Best regards, Vladimir Stefanovic Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         BorlandTalk.com Forum Index -> C++ Builder (Native API) All times are GMT Page 1 of 1   Jump to: Select a forum C++ Builder Newsgroups----------------C++ BuilderC++ Builder (ActiveX)C++ Builder (Announcements)C++ Builder (Command Line Tools)C++ Builder DatabasesC++ Builder Databases (ADO)C++ Builder Databases (Desktop)C++ Builder Databases (InterBase Express)C++ Builder Databases (Multi-Tier)C++ Builder Databases (SQL Servers)C++ Builder (Graphics)C++ Builder (IDE)C++ Builder (Internet)C++ Builder (Internet Socket)C++ Builder (Internet Web)C++ Builder (Jobs)C++ Builder (Language)C++ Builder (Language C++)C++ Builder (Compatibility with MFC)C++ Builder (Native API)C++ Builder (Non-Technical)C++ Builder (Students)C++ Builder (Third Party Tools)C++ Builder (Upgrade)C++ Builder (VCL)C++ Builder (VCL Components Usage)C++ Builder (VCL Components Development)C++ Builder (VCL Usage)C++ Builder (WinAPI)C++ Builder Installation Delphi Newsgroups----------------Delphi (General)Delphi ActiveX Controls UsageDelphi ActiveX Controls DevelopmentDelphi As400Delphi DatabasesDelphi Databases (ADO)Delphi Databases (dbExpress)Delphi Databases (Desktop)Delphi Databases (InterBase Express)Delphi Databases (Multi-Tier)Delphi Databases (SQL Servers)Delphi DeploymentDelphi GraphicsDelphi IDEDelphi InternationalizationDelphi InternetDelphi Internet Isapi-WebBrokerDelphi Internet WebSnapDelphi Internet WinsockDelphi JobsDelphi Language BASMDelphi Language ObjectPascalDelphi Model Driven Architecture (General)Delphi Model Driven Architecture (Third Party)Delphi MultimediaDelphi Native APIDelphi Non-TechnicalDelphi ObjectPascalDelphi OLE AutomationDelphi OO designDelphi OpenToolsAPIDelphi Reporting-ChartingDelphi RTLDelphi StudentsDelphi TeamSourceDelphi Thirdparty ToolsDelphi Thirdparty Tools (General)Delphi Thirdparty Tools (IntraWeb)Delphi Thirdparty Tools (RaveReports)Delphi UpgradeDelphi VCLDelphi VCL ComponentsDelphi VCL Components UsingDelphi VCL Components WritingDelphi WebServices SOAPDelphi WinAPIDelphi XMLDelphi Installationcomp.lang.pascal.delphi.components.misccomp.lang.pascal.delphi.components.usagecomp.lang.pascal.delphi.components.writingcomp.lang.pascal.delphi.databasescomp.lang.pascal.delphi.misccomp.sources.delphi JBuilder Newsgroups----------------JBuilderJBuilder AnnouncementsJBuilder Applet IssuesJBuilder As400JBuilder CompilerJBuilder CORBA/RMIJBuilder DatabasesJBuilder DB SwingJBuilder DebuggerJBuilder DeploymentJBuilder DocumentationJBuilder EnterpriseJBuilder HandheldJBuilder IDEJBuilder JavaJBuilder JavaAPIJBuilder Java LanguageJBuilder Java SwingJBuilder Java BeansJBuilder Java Beans UsageJBuilder Java Beans DevelopmentJBuilder JBCLJBuilder JDataStoreJBuilder JobsJBuilder LinuxJBuilder MacintoshJBuilder & MobileSetJBuilder MultiLingual AppsJBuilder Non-TechnicalJBuilder OpenToolsJBuilder Servlets (JSP)JBuilder StudentsJBuilder Team DevelopmentJBuilder Thirdparty ToolsJBuilder UpgradeJBuilder Installation InterBase Newsgroups----------------InterBaseInterBase Bug DiscussionInterBase GeneralInterBase IBConsoleInterBase OpenSourceInterBase ReplicationInterBase SQLInterBase ThirdpartyInterBase Installation Miscellaneous Borland Newsgroups----------------AppCenterAppServerEnteraVisiBroker  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.