BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  video mode/pixel format          BorlandTalk.com Forum Index -> C++ Builder (Graphics) View previous topic :: View next topic   Author Message C. Bond Guest Posted: Fri Oct 03, 2003 2:15 am    Post subject: video mode/pixel format How can I determine the desktop video mode/pixel format of the system when my application starts? -- Democracy: The triumph of popularity over principle. -- http://www.crbond.com Back to top Wim Bekker Guest Posted: Fri Oct 03, 2003 2:41 pm    Post subject: Re: video mode/pixel format Use VCL: ScreenWidth=Screen().Width; ScreenHeight=Screen().Height; Or use NativeAPI: HDC hdc=GetDC(NULL); ScreenWidth=GetDeviceCaps(hdc,HORZRES); ScreenHeight=GetDeviceCaps(hdc,VERTRES); Wim "C. Bond" <cbond (AT) ix (DOT) netcom.com> schreef in bericht news:3F7CDBCF.3565CCC8 (AT) ix (DOT) netcom.com... Quote: How can I determine the desktop video mode/pixel format of the system when my application starts? -- Democracy: The triumph of popularity over principle. -- http://www.crbond.com Back to top C. Bond Guest Posted: Fri Oct 03, 2003 4:01 pm    Post subject: Re: video mode/pixel format Wim Bekker wrote: Quote: Use VCL: ScreenWidth=Screen().Width; ScreenHeight=Screen().Height; Or use NativeAPI: HDC hdc=GetDC(NULL); ScreenWidth=GetDeviceCaps(hdc,HORZRES); ScreenHeight=GetDeviceCaps(hdc,VERTRES); Wim "C. Bond" <cbond (AT) ix (DOT) netcom.com> schreef in bericht news:3F7CDBCF.3565CCC8 (AT) ix (DOT) netcom.com... How can I determine the desktop video mode/pixel format of the system when my application starts? Well, I can use "Screen" to get the height and width, but how do I get the video mode and pixel format? -- There are two things you must never attempt to prove: the unprovable -- and the obvious. -- Democracy: The triumph of popularity over principle. -- http://www.crbond.com Back to top Wim Bekker Guest Posted: Mon Oct 06, 2003 10:33 am    Post subject: Re: video mode/pixel format As far as I know, the 'video mode' isn't just a single value. Every VideoMode is build up in a TDevMode struct (_devicemodeA). To get the current VideoMode, you first have to EnumDisplaySettings and store all results (where DevMode.dmDisplayFrequence>1) in a TDevMode list. Then you need the BITSPIXEL, HORZRES, VERTRES and VREFRESH values from GetDeviceCaps, and compare them to the items in the TDevModeList. When there's match, you've found the current VideoMode (the entry in the TDevModeList). BITSPIXEL gives you the pixelformat but you have to interpret it to use it. You can use the entries in the TDevModeList to change the DisplaySettings (and use NULL to get the default DisplaySettings). Wim "C. Bond" <cbond (AT) ix (DOT) netcom.com> schreef in bericht news:3F7D9D63.EFC5ABED (AT) ix (DOT) netcom.com... Quote: Wim Bekker wrote: Use VCL: ScreenWidth=Screen().Width; ScreenHeight=Screen().Height; Or use NativeAPI: HDC hdc=GetDC(NULL); ScreenWidth=GetDeviceCaps(hdc,HORZRES); ScreenHeight=GetDeviceCaps(hdc,VERTRES); Wim "C. Bond" <cbond (AT) ix (DOT) netcom.com> schreef in bericht news:3F7CDBCF.3565CCC8 (AT) ix (DOT) netcom.com... How can I determine the desktop video mode/pixel format of the system when my application starts? Well, I can use "Screen" to get the height and width, but how do I get the video mode and pixel format? -- There are two things you must never attempt to prove: the unprovable -- and the obvious. -- Democracy: The triumph of popularity over principle. -- http://www.crbond.com Back to top C. Bond Guest Posted: Mon Oct 06, 2003 5:36 pm    Post subject: Re: video mode/pixel format Wim Bekker wrote: Quote: As far as I know, the 'video mode' isn't just a single value. Every VideoMode is build up in a TDevMode struct (_devicemodeA). To get the current VideoMode, you first have to EnumDisplaySettings and store all results (where DevMode.dmDisplayFrequence>1) in a TDevMode list. Then you need the BITSPIXEL, HORZRES, VERTRES and VREFRESH values from GetDeviceCaps, and compare them to the items in the TDevModeList. When there's match, you've found the current VideoMode (the entry in the TDevModeList). BITSPIXEL gives you the pixelformat but you have to interpret it to use it. You can use the entries in the TDevModeList to change the DisplaySettings (and use NULL to get the default DisplaySettings). Wim Thanks for the detailed answer. It does seem strange, though, that you can set the video mode from the desktop, but cannot just read it directly somewhere. -- Democracy: The triumph of popularity over principle. -- http://www.crbond.com 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 (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.