BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  AnsiString and TString          BorlandTalk.com Forum Index -> C++ Builder (Non-Technical) View previous topic :: View next topic   Author Message Gary Guest Posted: Sun Jan 04, 2004 5:45 pm    Post subject: AnsiString and TString Why on earth do we have two classes of Strings? Previously we had none, now we have two! And two is one to many. Translation: I'm getting a Cannot convert TString to AnsiString error message and its really annoying because what I want to do appears to be not possible because we have two different String classes. I'm trying to send RichEdit1->Lines to an external Pascal function. So I declare my external Pascal header with AnsiString. Get that message about converting TStrings to AnsiString. So I changed the declaration of the Pascal function to TStrings and get errors that TStrings cannot be made or something like that. Back to top Peter Agricola Guest Posted: Sun Jan 04, 2004 7:25 pm    Post subject: Re: AnsiString and TString "Gary" <nospam (AT) nospam (DOT) net> wrote: Quote: Why on earth do we have two classes of Strings? We don't. We have much more ;-) Quote: I'm trying to send RichEdit1->Lines to an external Pascal function. So I declare my external Pascal header with AnsiString. Get that message about converting TStrings to AnsiString. So I changed the declaration of the Pascal function to TStrings and get errors that TStrings cannot be made or something like that. Lines is of type TStrings wich is a list of strings. For passing the (unformatted) text as an AnsiString use the Text property of richedit. Peter Back to top Remy Lebeau (TeamB) Guest Posted: Sun Jan 04, 2004 10:08 pm    Post subject: Re: AnsiString and TString "Gary" <nospam (AT) nospam (DOT) net> wrote Quote: Why on earth do we have two classes of Strings? We don't. TStrings is not a string class. It is a container of multiple string values. That is not the same thing. Quote: Translation: I'm getting a Cannot convert TString to AnsiString error message Please show your actual code. If you are trying to assign an AnsiString to a TStrings, you need to use the TStrings' Text or CommaText property, depending on your actual needs. Quote: I'm trying to send RichEdit1->Lines to an external Pascal function. Use the Text property then: RichEdit1->Lines->Text Quote: So I declare my external Pascal header with AnsiString. Get that message about converting TStrings to AnsiString. So I changed the declaration of the Pascal function to TStrings and get errors that TStrings cannot be made or something like that. TStrings is an abstract base class, meaning it has pure virtual methods in it. TStrings cannot be instantiated directly. To instantiate an instance of it, you need to instantiate a descendant class instead, such as TStringList. Gambit Back to top Gary Guest Posted: Mon Jan 05, 2004 12:17 am    Post subject: Re: AnsiString and TString Thanks guys! I was ranting and actually got answered. Thanks :) "Remy Lebeau (TeamB)" <gambit47.no.spam (AT) no (DOT) spam.yahoo.com> wrote Quote: "Gary" <nospam (AT) nospam (DOT) net> wrote in message news:3ff85157 (AT) newsgroups (DOT) borland.com... Why on earth do we have two classes of Strings? We don't. TStrings is not a string class. It is a container of multiple string values. That is not the same thing. Translation: I'm getting a Cannot convert TString to AnsiString error message Please show your actual code. If you are trying to assign an AnsiString to a TStrings, you need to use the TStrings' Text or CommaText property, depending on your actual needs. I'm trying to send RichEdit1->Lines to an external Pascal function. Use the Text property then: RichEdit1->Lines->Text So I declare my external Pascal header with AnsiString. Get that message about converting TStrings to AnsiString. So I changed the declaration of the Pascal function to TStrings and get errors that TStrings cannot be made or something like that. TStrings is an abstract base class, meaning it has pure virtual methods in it. TStrings cannot be instantiated directly. To instantiate an instance of it, you need to instantiate a descendant class instead, such as TStringList. Gambit Back to top Gary Guest Posted: Mon Jan 05, 2004 2:09 am    Post subject: New problem I guess I don't remember how to call a Pascal function after all. I get an unresolved external '__Stdcall RtfToHtml(System::AnsiString) referenced.... I tried this it in my h file and my cpp file but either way I declared it as such: extern pascal AnsiString RtfToHtml(AnsiString textstuff); my code looks like this where I call it. It's been changed trying to get around errors. Previously Memo1->Lines->Text replaced HTMLString. And HTMLString is of type AnsiString. HTMLString = RtfToHtml(RichEdit1->Lines->Text); Memo1->Lines->Text = HTMLString; Memo1->Lines->SaveToFile(FileName); I added Rtf2Html.pas to my project. I've never tried to call a Pascal function from c before. I was taught how around 94 or 95 so it's been a while. Does it show? ;) Back to top Remy Lebeau (TeamB) Guest Posted: Mon Jan 05, 2004 2:58 am    Post subject: Re: New problem "Gary" <nospam (AT) nospam (DOT) net> wrote Quote: I guess I don't remember how to call a Pascal function after all. When you say "Pascal", are you referring to a function that is actually written in the Delphi Pascal language? Or just a C++ function that uses the __pascal calling convention? They are very different things. You need to clearify exactly what you are trying to accomplish. Gambit P.S. when you start discussing a new topic, you should start a new thread for it. Back to top Gary Guest Posted: Mon Jan 05, 2004 4:26 am    Post subject: Re: New problem It's written in actual Pascal. Somewhere on the ngs, someone was pointed to this function when they wanted HTML from a RichEdit and I downloaded it too because I wanted to have HTML from a RichEdit as well. "Remy Lebeau (TeamB)" <gambit47.no.spam (AT) no (DOT) spam.yahoo.com> wrote Quote: "Gary" <nospam (AT) nospam (DOT) net> wrote in message news:3ff8c770 (AT) newsgroups (DOT) borland.com... I guess I don't remember how to call a Pascal function after all. When you say "Pascal", are you referring to a function that is actually written in the Delphi Pascal language? Or just a C++ function that uses the __pascal calling convention? They are very different things. You need to clearify exactly what you are trying to accomplish. Gambit P.S. when you start discussing a new topic, you should start a new thread for it. Back to top Remy Lebeau (TeamB) Guest Posted: Mon Jan 05, 2004 4:50 am    Post subject: Re: New problem "Gary" <nospam (AT) nospam (DOT) net> wrote Quote: It's written in actual Pascal. I assume that the Pascal is being added to the C++ project directly, correct? If so, then simply put the code into its own .PAS unit (if it is not already) and add that unit to the project. The IDE will automatically produce an .HPP header file for your C++ code to use to access the Pascal functions/classes/varaibles. Gambit Back to top Andrea Guest Posted: Tue Jan 06, 2004 5:57 pm    Post subject: Re: AnsiString and TString You can use RichEdit1->Lines->Add( ... ) to add an AnsiString to a RichEdit component. Hope this help, Andrea Peri. On Sun, 4 Jan 2004 12:45:56 -0500, "Gary" <nospam (AT) nospam (DOT) net> wrote: Quote: Why on earth do we have two classes of Strings? Previously we had none, now we have two! And two is one to many. Translation: I'm getting a Cannot convert TString to AnsiString error message and its really annoying because what I want to do appears to be not possible because we have two different String classes. I'm trying to send RichEdit1->Lines to an external Pascal function. So I declare my external Pascal header with AnsiString. Get that message about converting TStrings to AnsiString. So I changed the declaration of the Pascal function to TStrings and get errors that TStrings cannot be made or something like that. 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 (Non-Technical) 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.