BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  how to display a jpeg image from blob field in tdbimage...          BorlandTalk.com Forum Index -> C++ Builder Databases (Desktop) View previous topic :: View next topic   Author Message Markcr Guest Posted: Mon Jul 03, 2006 7:05 pm    Post subject: how to display a jpeg image from blob field in tdbimage... I realise that this has been asked a few times in various ways, including by me, but how can i display a jpeg image stored in a blob filed in a tdbimage component? I am using paradox table and c++builder 6 Can the TDBImage be changed to have functions which display a jpeg image (it errors with an invalid nitmap image currently) Most example I have googled use Delphi code, which is no use for me. Back to top Antonio Felix Guest Posted: Tue Jul 04, 2006 2:25 am    Post subject: Re: how to display a jpeg image from blob field in tdbimage. "Markcr" <markcr (AT) ntlworldminusthistext (DOT) com> escreveu na mensagem news:44a92428$1 (AT) newsgroups (DOT) borland.com... Quote: I realise that this has been asked a few times in various ways, including by me, but how can i display a jpeg image stored in a blob filed in a tdbimage component? I am using paradox table and c++builder 6 Can the TDBImage be changed to have functions which display a jpeg image (it errors with an invalid nitmap image currently) Most example I have googled use Delphi code, which is no use for me. Hi, Just include the JPeg.hpp Header file ( at least with BCB5 - Presumed it stills the same ) HTH Antonio Back to top Markcr Guest Posted: Tue Jul 04, 2006 1:53 pm    Post subject: Re: how to display a jpeg image from blob field in tdbimage. It is already included. I can load a jpeg into a TImage but not a TDBImage "Antonio Felix" <antoniojfelix (AT) maisspamnao (DOT) clixempt> wrote in message news:44a98b21 (AT) newsgroups (DOT) borland.com... Quote: "Markcr" <markcr (AT) ntlworldminusthistext (DOT) com> escreveu na mensagem news:44a92428$1 (AT) newsgroups (DOT) borland.com... I realise that this has been asked a few times in various ways, including by me, but how can i display a jpeg image stored in a blob filed in a tdbimage component? I am using paradox table and c++builder 6 Can the TDBImage be changed to have functions which display a jpeg image (it errors with an invalid nitmap image currently) Most example I have googled use Delphi code, which is no use for me. Hi, Just include the JPeg.hpp Header file ( at least with BCB5 - Presumed it stills the same ) HTH Antonio Back to top Antonio Felix Guest Posted: Tue Jul 04, 2006 2:53 pm    Post subject: Re: how to display a jpeg image from blob field in tdbimage. "Markcr" <markcr (AT) ntlworldminusthistext (DOT) com> wrote: Quote: It is already included. I can load a jpeg into a TImage but not a TDBImage Take a look at http://groups.google.pt/group/borland.public.cppbuilder.database.sqlservers/browse_frm/thread/c6e5f1fe144c7bb9/b40d8eac389a4125?lnk=st&q=builder+jpeg+tdbimage&rnum=6&hl=pt-PT#b40d8eac389a4125 HTH Antonio Back to top Markcr Guest Posted: Tue Jul 04, 2006 3:28 pm    Post subject: Re: how to display a jpeg image from blob field in tdbimage. OK, I put the code in the form create, but I still get Bitmap image is not valid when I open the database. Should the code live somehwere else? "Antonio Felix" <nomail (AT) nm (DOT) pt> wrote in message news:44aa3a93$1 (AT) newsgroups (DOT) borland.com... Quote: "Markcr" <markcr (AT) ntlworldminusthistext (DOT) com> wrote: It is already included. I can load a jpeg into a TImage but not a TDBImage Take a look at http://groups.google.pt/group/borland.public.cppbuilder.database.sqlservers/browse_frm/thread/c6e5f1fe144c7bb9/b40d8eac389a4125?lnk=st&q=builder+jpeg+tdbimage&rnum=6&hl=pt-PT#b40d8eac389a4125 HTH Antonio Back to top Antonio Felix Guest Posted: Tue Jul 04, 2006 6:42 pm    Post subject: Re: how to display a jpeg image from blob field in tdbimage. "Markcr" <markcr (AT) ntlworldminusthistext (DOT) com> wrote: Quote: OK, I put the code in the form create, but I still get Bitmap image is not valid when I open the database. Should the code live somehwere else? Don't use the Form Create, use it in the form constructor. Are you shure that you have a valid jpeg in the Blob field? Br Antonio Back to top Markcr Guest Posted: Tue Jul 04, 2006 7:36 pm    Post subject: Re: how to display a jpeg image from blob field in tdbimage. I am sure. If i savetofile and then loadfromfile in a TImage I have no problems, but I want to cut out the savetofileand loadfromfile section, "Antonio Felix" <nomail (AT) nm (DOT) pt> wrote in message news:44aa7039$1 (AT) newsgroups (DOT) borland.com... Quote: "Markcr" <markcr (AT) ntlworldminusthistext (DOT) com> wrote: OK, I put the code in the form create, but I still get Bitmap image is not valid when I open the database. Should the code live somehwere else? Don't use the Form Create, use it in the form constructor. Are you shure that you have a valid jpeg in the Blob field? Br Antonio Back to top Mark Richards Guest Posted: Wed Jul 05, 2006 3:11 am    Post subject: Re: how to display a jpeg image from blob field in tdbimage. Does anyone have a wroking code that can access a TBlobField, save it to a memory stream, and then load it into a TImage? -- --------------------------------------- And a pointless sig... --------------------------------------- There are 10 types of people in the world those that understand binary and those that don't "Markcr" <markcr (AT) ntlworldminusthistext (DOT) com> wrote in message news:44a92428$1 (AT) newsgroups (DOT) borland.com... Quote: I realise that this has been asked a few times in various ways, including by me, but how can i display a jpeg image stored in a blob filed in a tdbimage component? I am using paradox table and c++builder 6 Can the TDBImage be changed to have functions which display a jpeg image (it errors with an invalid nitmap image currently) Most example I have googled use Delphi code, which is no use for me. Back to top Antonio Felix Guest Posted: Wed Jul 05, 2006 3:18 pm    Post subject: Re: how to display a jpeg image from blob field in tdbimage. "Mark Richards" <markcr (AT) wapthespamntlworld (DOT) com> wrote: Quote: Does anyone have a wroking code that can access a TBlobField, save it to a memory stream, and then load it into a TImage? .... if ( !Dm->IBSU->FieldByName("PGraph")->IsNull ) { TJPEGImage *Jp; TMemoryStream *Blob; try { Jp = new TJPEGImage(); Blob = new TMemoryStream(); Dm->IBSU->FieldByName("PGraph")->SaveToStream( Blob ); Blob->Position = 0; Jp->LoadFromStream( Blob ); IPGraph->Picture->Bitmap->Assign( Jp ); delete Blob; delete Jp; } catch( Exception &E ) { FxMsgE( Application->Handle, "Imagem:", "Cannot Load Image.", E ); delete Blob; delete Jp; } } else IPGraph->Picture->Metafile->Clear(); ... IPGraph = TImage Dm->IBSU = TIBSQL on a DataModule ( change it by your Dataset ) HTH Antonio Back to top Markcr Guest Posted: Wed Jul 05, 2006 10:15 pm    Post subject: Re: how to display a jpeg image from blob field in tdbimage. thanks, I will implement that later. Ditched the dbimage control, so that should work better, at least it cuts out opening files. "Antonio Felix" <nomail (AT) nm (DOT) pt> wrote in message news:44ab9203$1 (AT) newsgroups (DOT) borland.com... Quote: "Mark Richards" <markcr (AT) wapthespamntlworld (DOT) com> wrote: Does anyone have a wroking code that can access a TBlobField, save it to a memory stream, and then load it into a TImage? ... if ( !Dm->IBSU->FieldByName("PGraph")->IsNull ) { TJPEGImage *Jp; TMemoryStream *Blob; try { Jp = new TJPEGImage(); Blob = new TMemoryStream(); Dm->IBSU->FieldByName("PGraph")->SaveToStream( Blob ); Blob->Position = 0; Jp->LoadFromStream( Blob ); IPGraph->Picture->Bitmap->Assign( Jp ); delete Blob; delete Jp; } catch( Exception &E ) { FxMsgE( Application->Handle, "Imagem:", "Cannot Load Image.", E ); delete Blob; delete Jp; } } else IPGraph->Picture->Metafile->Clear(); .. IPGraph = TImage Dm->IBSU = TIBSQL on a DataModule ( change it by your Dataset ) HTH Antonio 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 Databases (Desktop) 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.