BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Re: ADO and DLL          BorlandTalk.com Forum Index -> C++ Builder (IDE) View previous topic :: View next topic   Author Message Remy Lebeau (TeamB) Guest Posted: Mon Sep 19, 2005 5:20 pm    Post subject: Re: ADO and DLL "Borut ©u¹tar" <borut (AT) bokosoft (DOT) si> wrote Quote: Nast->ConnectionString = nastavitve("TrgoLocal"); --> here is an error "Access violation at adress 40653F in module 'adortl60.bpl'.Read of address 55433." You did not instantiate an actual instance of the TADODataSet class. The error is caused by you accessing invalid memory. Also, you should not be calling CoUninitialize() until after you are completely finished using ADO. The COM library must remain initialized for the calling thread while you are working with the ADO system. Gambit Back to top Liz Albin Guest Posted: Mon Sep 19, 2005 5:28 pm    Post subject: Re: ADO and DLL On Mon, 19 Sep 2005 16:52:24 +0200, Borut ?u?tar wrote: Quote: Nast->ConnectionString = nastavitve("TrgoLocal"); --> here is an error that's because Nast is only a pointer. use new to initialize it, or a smart pointer (e.g. auto_ptr) -- Good luck, liz Back to top Remy Lebeau (TeamB) Guest Posted: Mon Sep 19, 2005 8:38 pm    Post subject: Re: ADO and DLL "Liz Albin" <lizalbinNotThis (AT) yahoo (DOT) com> wrote Quote: use new to initialize it, or a smart pointer (e.g. auto_ptr) Even if you use auto_ptr, you still need to use 'new'. Gambit Back to top Liz Albin Guest Posted: Tue Sep 20, 2005 3:13 am    Post subject: Re: ADO and DLL On Mon, 19 Sep 2005 13:38:36 -0700, Remy Lebeau (TeamB) wrote: Quote: Even if you use auto_ptr, you still need to use 'new'. Within the assignment, yes -- Good luck, liz Back to top Remy Lebeau (TeamB) Guest Posted: Tue Sep 20, 2005 4:16 pm    Post subject: Re: ADO and DLL "Borut ©u¹tar" <borut (AT) bokosoft (DOT) si> wrote Quote: I tried like this: TADODataSet *Nast = new TADODataSet; but when i compile i get error (Could not find a match for 'TADODataSet::TADODataSet()') As well you should be. If you look in the documentation, you will see that TADODataSet's constructor takes an Owner parameter, just like every other component does, ie: TADODataSet *Nast = new TADODataSet(SomeComponent); Or: TADODataSet *Nast = new TADODataSet(NULL); //... delete Nast; Gambit 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 (IDE) 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.