嵌入式系統(tǒng)GUI的機(jī)制及其在機(jī)頂盒上的應(yīng)用.pdf

1、華中科技大學(xué)碩士學(xué)位論文嵌入式系統(tǒng)GUI的機(jī)制及其在機(jī)頂盒上的應(yīng)用姓名：李海波申請學(xué)位級別：碩士專業(yè)：軟件工程指導(dǎo)教師：王宏遠(yuǎn)20041108IIAbstractTheapplicationofGUI(GraphicsUserInterface)speedupthespreadofcomputerapplicationthedevelopmentofembeddedtechnologyspeedupthedepthofcomputera

2、pplication.LatePCAgecallontheirincreasinglycloseintegration.AtfirstthepaperdiscussestheinnermechanismofGUIsysteminembeddedapplication.FirstlyweresearchthebottomsupptmechanismofGUIsystemfromtwoaspects:OSDtechnologydevicei

3、ndependencetechnology.OSDtechnologyisoneimptantpartofhardwarelayerdeviceindependencetechnologyisanotherimptantpartofdlelayer.Thensoleprocess(thread)modelClientServermodelarebringfwardastwostsofsoftwarearchitectureofappli

4、cationlayerinGUIsystemonthebasisofprevioustwotechnologytherealizationofClientServermodelismainlydiscussedbecauseofitsprevalencefromtwomainaspects:processcommunication&messagetransfercontrolmechanism.SecondlyGUIsystemisde

5、signedinawhole.Itisdividedintothreesubsystems:graphicseventsobjectssubsystemaccdingtoitsfunction.Graphicseventssubsystemisbuiltuponthebasisoftheirinnermodelpartitionrelationsamonginnermodelsbetweeninnermodelsoutermodels.

6、Fobjectssubsystemrulesisputfwdtodesignindividualobjectbutlayeredlogicmodelphysicsdisplaymodelisputfwdtomanagecollectiveobjects.AttheendisapplicationdevelopmentofGUIsystem.AsanexampledigitalSettopboxOSDdevelopmentisusedto

7、makeclearthecreationdestroyprocedureofwindows&controlstheirresponsetoseveraltypicmessages.FinallyanexampleisexplainedindetailaboutthefunctionimplementofawindowusedtosetupSettopboxsystemrelatingtowindow’sproceduretoproces

8、sspecificmessagecommonmessagetwotypiccontrols’(buttonbox)respectiveproceduretoprocessspecificmessagecommonmessagethesimilarfdialogcreatedbythetwocontrols.Keywds:EmbeddedSystemGUI(GraphicsUserInterface)OSD(OnScreenDisplay