BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  pf32bit?          BorlandTalk.com Forum Index -> Delphi Graphics View previous topic :: View next topic   Author Message sduguay Guest Posted: Tue Sep 19, 2006 1:27 am    Post subject: pf32bit? I have a bmp file which when I loadfromfile sometimes gives me the error message 'Bitmap image is not valid.' I have traced the problem to the fact that the file is 32 bitdepth. Sometimes it works, and sometimes it doesn't... The file is automatically getting pixelformat pfDevice. If I set the pixelformat to pf8bit before loading, it seems to work, although I can't be positive about that because the problem is intermittent. It does reduce the quality of the image though... My questions are: 1. On the same computer, why woudl it work sometimes and not others? 2. If I set to pf32bit before loading, will that work on all computers? Thanks in advance for any insight. Back to top GrandmasterB Guest Posted: Tue Sep 19, 2006 2:36 am    Post subject: Re: pf32bit? "sduguay" <shelley.duguay (AT) maxxamanalytics (DOT) com> wrote in message news:450f013d$1 (AT) newsgroups (DOT) borland.com... Quote: I have a bmp file which when I loadfromfile sometimes gives me the error message 'Bitmap image is not valid.' I have traced the problem to the fact that the file is 32 bitdepth. Sometimes it works, and sometimes it doesn't... If its working with the same image some of the time, but not all of the time, it may not be related to the pixel format. You didnt mention what OS you are using. If under Win9x/Me, its possible you are running out of bitmap handles. Back to top sduguay Guest Posted: Wed Sep 20, 2006 7:07 pm    Post subject: Re: pf32bit? "GrandmasterB" <Fizzle (AT) shizzle (DOT) com> wrote: Quote: "sduguay" <shelley.duguay (AT) maxxamanalytics (DOT) com> wrote in message news:450f013d$1 (AT) newsgroups (DOT) borland.com... I have a bmp file which when I loadfromfile sometimes gives me the error message 'Bitmap image is not valid.' I have traced the problem to the fact that the file is 32 bitdepth. Sometimes it works, and sometimes it doesn't... If its working with the same image some of the time, but not all of the time, it may not be related to the pixel format. You didnt mention what OS you are using. If under Win9x/Me, its possible you are running out of bitmap handles. The OS varies, but the problem has for sure happened under WinNT/Citrix session and under WinXP Professional. Is there a way to programatically free up bitmap handles? I am freeing the bitmap object. Here is my code: letterhead := TBitmap.Create; letterhead.LoadFromFile( HeaderFileName); TBaseReport(Sender).PrintBitMapRect( top_x1, top_y1, top_x2, top_y2, letterhead ); letterhead.Destroy; Thanks Back to top GrandmasterB Guest Posted: Wed Sep 20, 2006 11:07 pm    Post subject: Re: pf32bit? "sduguay" <shelley.duguay (AT) maxxamanalytics (DOT) com> wrote in message news:45114b09$1 (AT) newsgroups (DOT) borland.com... Quote: The OS varies, but the problem has for sure happened under WinNT/Citrix session and under WinXP Professional. Is there a way to programatically free up bitmap handles? I am freeing the bitmap object. Here is my code: letterhead := TBitmap.Create; letterhead.LoadFromFile( HeaderFileName); TBaseReport(Sender).PrintBitMapRect( top_x1, top_y1, top_x2, top_y2, letterhead ); letterhead.Destroy; hmm. What line specifically is it crashing on? A few thoughts. - use letterhead.Free, not letterhead.destroy. - how big is HeaderFileName? If its big (larger than the screen size in one dimension), it might be too big for the Citrix 'video driver', and give you an error like that. Thats an obscure kind of problem, but I've seen similar ones from time to time. - Are you sure top_* are all set to reasonable values? - Are you sure HeaderFileName exists? If you're just passing a file name, the application may have changed a working directory and made the file unfindable. You might want to wrap everything around a if (FileExists( HeaderFileName)) then begin //load from file, etc. end Back to top sduguay Guest Posted: Thu Sep 21, 2006 2:02 am    Post subject: Re: pf32bit? "GrandmasterB" <Fizzle (AT) shizzle (DOT) com> wrote: Quote: "sduguay" <shelley.duguay (AT) maxxamanalytics (DOT) com> wrote in message news:45114b09$1 (AT) newsgroups (DOT) borland.com... The OS varies, but the problem has for sure happened under WinNT/Citrix session and under WinXP Professional. Is there a way to programatically free up bitmap handles? I am freeing the bitmap object. Here is my code: letterhead := TBitmap.Create; letterhead.LoadFromFile( HeaderFileName); TBaseReport(Sender).PrintBitMapRect( top_x1, top_y1, top_x2, top_y2, letterhead ); letterhead.Destroy; hmm. What line specifically is it crashing on? A few thoughts. - use letterhead.Free, not letterhead.destroy. - how big is HeaderFileName? If its big (larger than the screen size in one dimension), it might be too big for the Citrix 'video driver', and give you an error like that. Thats an obscure kind of problem, but I've seen similar ones from time to time. - Are you sure top_* are all set to reasonable values? - Are you sure HeaderFileName exists? If you're just passing a file name, the application may have changed a working directory and made the file unfindable. You might want to wrap everything around a if (FileExists( HeaderFileName)) then begin //load from file, etc. end All excellent questions... It crashes on the loadfromfile line. I just put this code in shorthand here to simplify it.. Yes the HeaderFileName exists. I agree with changing the Destroy to Free... It works all the time when we use an 8 bit header file.., only intermittently when we use an 32 bit header file.. The size vs screen resolutionis a good idea and I'll check that, buit it works sometime sand not others on the same machine in the same citrix session. an interesting note is that if I set the pixelformat to pf8bit before loading the header file I never get a crash... That's why I keyed in on the Pixel format, and why moy original question was about if it woudl be safe to set the pixel format to pf32bit. If this would work on all machines. Back to top GrandmasterB Guest Posted: Thu Sep 21, 2006 2:26 am    Post subject: Re: pf32bit? "sduguay" <shelley.duguay (AT) maxxamanalytics (DOT) com> wrote in message news:4511ac55$1 (AT) newsgroups (DOT) borland.com... Quote: All excellent questions... It crashes on the loadfromfile line. Thats pretty odd then. I cant think of a reason it'd crash intermittantly on the same file. Could the file be locked by another program/thread? Quote: an interesting note is that if I set the pixelformat to pf8bit before loading the header file I never get a crash... That's why I keyed in on the Pixel format, and why moy original question was about if it woudl be safe to set the pixel format to pf32bit. If this would work on all machines. If that fixes it, yeah, I think you'd be ok with setting it to pf32 ahead of loading. I usually manually set that for all the bmp's I create in code regardless of the user's color resolution to ensure its not set to pfDevice by default. Does having it set to pf8bit affect the output at all? When you do the loadfromfile, that should replace whatever pixel format you're using with that of the bitmap being loaded anyways, and not affect the display. Back to top sduguay Guest Posted: Thu Sep 21, 2006 7:56 pm    Post subject: Re: pf32bit? "GrandmasterB" <Fizzle (AT) shizzle (DOT) com> wrote: Quote: "sduguay" <shelley.duguay (AT) maxxamanalytics (DOT) com> wrote in message news:4511ac55$1 (AT) newsgroups (DOT) borland.com... All excellent questions... It crashes on the loadfromfile line. Thats pretty odd then. I cant think of a reason it'd crash intermittantly on the same file. Could the file be locked by another program/thread? an interesting note is that if I set the pixelformat to pf8bit before loading the header file I never get a crash... That's why I keyed in on the Pixel format, and why moy original question was about if it woudl be safe to set the pixel format to pf32bit. If this would work on all machines. If that fixes it, yeah, I think you'd be ok with setting it to pf32 ahead of loading. I usually manually set that for all the bmp's I create in code regardless of the user's color resolution to ensure its not set to pfDevice by default. Does having it set to pf8bit affect the output at all? When you do the loadfromfile, that should replace whatever pixel format you're using with that of the bitmap being loaded anyways, and not affect the display. Setting to pf8bit prior to loading works, but the quality of the image printed is reduced significantly. Thanks for all your input. Back to top Lord Crc Guest Posted: Sun Sep 24, 2006 3:34 am    Post subject: Re: pf32bit? On 21 Sep 2006 07:56:38 -0700, "sduguay" <shelley.duguay (AT) maxxamanalytics (DOT) com> wrote: Quote: Setting to pf8bit prior to loading works, but the quality of the image printed is reduced significantly. Thanks for all your input. How large are these images, as in width / height? If they're too large, TBitmap might barf, even on 2k/xp. - Asbjørn Back to top sduguay Guest Posted: Thu Sep 28, 2006 12:27 am    Post subject: Re: pf32bit? "sduguay" <shelley.duguay (AT) maxxamanalytics (DOT) com> wrote: Quote: "GrandmasterB" <Fizzle (AT) shizzle (DOT) com> wrote: "sduguay" <shelley.duguay (AT) maxxamanalytics (DOT) com> wrote in message news:4511ac55$1 (AT) newsgroups (DOT) borland.com... All excellent questions... It crashes on the loadfromfile line. Thats pretty odd then. I cant think of a reason it'd crash intermittantly on the same file. Could the file be locked by another program/thread? an interesting note is that if I set the pixelformat to pf8bit before loading the header file I never get a crash... That's why I keyed in on the Pixel format, and why moy original question was about if it woudl be safe to set the pixel format to pf32bit. If this would work on all machines. If that fixes it, yeah, I think you'd be ok with setting it to pf32 ahead of loading. I usually manually set that for all the bmp's I create in code regardless of the user's color resolution to ensure its not set to pfDevice by default. Does having it set to pf8bit affect the output at all? When you do the loadfromfile, that should replace whatever pixel format you're using with that of the bitmap being loaded anyways, and not affect the display. Setting to pf8bit prior to loading works, but the quality of the image printed is reduced significantly. Thanks for all your input. An update on this. I changed itto set the pixelformat to pf32bit prior to calling the loadfromfile. Unfortunately, we still get the error now and then... Back to top sduguay Guest Posted: Thu Sep 28, 2006 12:30 am    Post subject: Re: pf32bit? Lord Crc <lordcrc (AT) hotmail (DOT) com> wrote: Quote: On 21 Sep 2006 07:56:38 -0700, "sduguay" shelley.duguay (AT) maxxamanalytics (DOT) com> wrote: Setting to pf8bit prior to loading works, but the quality of the image printed is reduced significantly. Thanks for all your input. How large are these images, as in width / height? If they're too large, TBitmap might barf, even on 2k/xp. - Asbjørn 31.91 x 1.71 inches or 2297 x 123 pixels but it is being printed shrunk to about 7 inches x 0.4 inches using the PrintBitmapRect() call. Shelley Back to top Lord Crc Guest Posted: Thu Sep 28, 2006 2:39 am    Post subject: Re: pf32bit? On 27 Sep 2006 12:30:48 -0700, "sduguay" <shelley.duguay (AT) maxxamanalytics (DOT) com> wrote: Quote: 31.91 x 1.71 inches Inches is totally irrelevant ;) Quote: 2297 x 123 pixels This isn't big at all, except if you're on a win98 box. Have you tried to enable debug dcu's and find out where exactly it crashes? - Asbjørn Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         BorlandTalk.com Forum Index -> Delphi Graphics 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.