BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Fill a void *          BorlandTalk.com Forum Index -> C++ Builder (Language C++) View previous topic :: View next topic   Author Message Grety Guest Posted: Mon Aug 22, 2005 1:10 pm    Post subject: Fill a void * How can I fill a void *? void *ptr; //ptr= 00 00 00 20 thx Back to top Rudy Velthuis [TeamB] Guest Posted: Mon Aug 22, 2005 7:17 pm    Post subject: Re: Fill a void * Grety wrote: Quote: How can I fill a void *? void *ptr; //ptr= 00 00 00 20 thx You can't. A void* points to nothing in particular. To fill the memory at that address with something, you'll need a typed pointer. -- Rudy Velthuis [TeamB] http://rvelthuis.bei.t-online.de "Argue for your limitations, and sure enough they're yours." - Richard Bach Back to top Grety Guest Posted: Mon Aug 22, 2005 7:25 pm    Post subject: Re: Fill a void * My problem is to write this value in Registry as a binary data string. 00 00 00 20 The function that I must use is MyReg->WriteBinaryData() which need void * ! Please guide me thx again "Rudy Velthuis [TeamB]" <velthuis (AT) gmail (DOT) com> wrote Quote: Grety wrote: How can I fill a void *? void *ptr; //ptr= 00 00 00 20 thx You can't. A void* points to nothing in particular. To fill the memory at that address with something, you'll need a typed pointer. -- Rudy Velthuis [TeamB] http://rvelthuis.bei.t-online.de "Argue for your limitations, and sure enough they're yours." - Richard Bach Back to top Rudy Velthuis [TeamB] Guest Posted: Mon Aug 22, 2005 7:29 pm    Post subject: Re: Fill a void * Grety wrote: Quote: My problem is to write this value in Registry as a binary data string. 00 00 00 20 The function that I must use is MyReg->WriteBinaryData() which need void * ! Please guide me You'll have to cast, then. Use a pointer to something real (like int*) and cast that to void* when passing to the routine. -- Rudy Velthuis [TeamB] http://rvelthuis.bei.t-online.de "Science is like sex: sometimes something useful comes out, but that is not the reason we are doing it" -- Richard Feynman Back to top Remy Lebeau (TeamB) Guest Posted: Mon Aug 22, 2005 9:14 pm    Post subject: Re: Fill a void * "Grety" <valid (AT) emailaddress (DOT) com> wrote Quote: My problem is to write this value in Registry as a binary data string. 00 00 00 20 You should as said so to begin with. The easiest way to do that is as follows: BYTE arr[4] = {0x00, 0x00, 0x00, 0x20}; MyReg->WriteBinaryData("TheValueName", arr, sizeof(arr)); Gambit Back to top Remy Lebeau (TeamB) Guest Posted: Mon Aug 22, 2005 9:14 pm    Post subject: Re: Fill a void * "Rudy Velthuis [TeamB]" <velthuis (AT) gmail (DOT) com> wrote Quote: You'll have to cast, then. Not true. See my other reply. Gambit Back to top Rudy Velthuis [TeamB] Guest Posted: Mon Aug 22, 2005 9:14 pm    Post subject: Re: Fill a void * Remy Lebeau (TeamB) wrote: Quote: "Rudy Velthuis [TeamB]" <velthuis (AT) gmail (DOT) com> wrote in message news:xn0e6b4xo2mj1d9003xananews (AT) newsgroups (DOT) borland.com... You'll have to cast, then. Not true. See my other reply. Ah, indeed. -- Rudy Velthuis [TeamB] http://rvelthuis.bei.t-online.de "I'm not going to have some reporters pawing through our papers. We are the president." -- Hillary Clinton. Back to top liz Guest Posted: Tue Aug 23, 2005 1:08 am    Post subject: Re: Fill a void * On Mon, 22 Aug 2005 17:40:42 +0430, Grety wrote: Quote: How can I fill a void *? void *ptr; //ptr= 00 00 00 20 you can't. you can fill a buffer -- liz Back to top Grety Guest Posted: Tue Aug 23, 2005 4:48 am    Post subject: Re: Fill a void * My problem is solved now , thanks to all "Grety" <valid (AT) emailaddress (DOT) com> wrote Quote: How can I fill a void *? void *ptr; //ptr= 00 00 00 20 thx Back to top Hendrik Schober Guest Posted: Tue Aug 23, 2005 10:11 am    Post subject: Re: Fill a void * Remy Lebeau (TeamB) <no.spam (AT) no (DOT) spam.com> wrote: Quote: "Grety" <valid (AT) emailaddress (DOT) com> wrote in message news:430a26c1 (AT) newsgroups (DOT) borland.com... My problem is to write this value in Registry as a binary data string. 00 00 00 20 You should as said so to begin with. The easiest way to do that is as follows: BYTE arr[4] = {0x00, 0x00, 0x00, 0x20}; MyReg->WriteBinaryData("TheValueName", arr, sizeof(arr)); BTW, this works because 1. any array's identifier can be used where a pointer to the array's first element is needed and 2. any pointer can be converted to 'void*'. Quote: Gambit Schobi -- [email]SpamTrap (AT) gmx (DOT) de[/email] is never read I'm Schobi at suespammers dot org "Coming back to where you started is not the same as never leaving" Terry Pratchett 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 (Language C++) 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.