关于Matlab中的GUA 的Brief Introduction to handles.docx

关于Matlab中的GUA 的Brief Introduction to handles.docx

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关于Matlab中的GUA的BriefIntroductiontohandles

MATLABGUITutorial-ABriefIntroductiontohandles

13Nov2007QuanQuach58comments12,689views

Introduction

Inthistutorial,wewilldiscusswhathandlesareandhowtousethegetandsetcommands.WhendealingwithaMatlabGUI,youhaveprobablynoticedthevariablehandlesbeingusedintheaccompanying.mfile.Thehandlesstructurecontainsalltheinformationforeachobjectinthe.figfileoftheGUI.Butitcanalsostoreotherinformation.Let’sexplorealittlebitmoreabouthandles.

ThistutorialiswrittenforthosewithsomeexperiencecreatingaMatlabGUI.Ifyou’renewtocreatingGUIsinMatlab,youshouldvisitthistutorialfirst.BasicknowledgeofMatlabisrecommended.Matlabversion2007aisusedinwritingthistutorial.Bothearlierversionsandnewversionsshouldbecompatibleaswell（aslongasitisan’ttoooutdated）.

Handles,get,andset

1.First,downloadthesampleGUIhere.Unzipthefilesandplacethemwhereveryouplease.

2.Now,typeguideatthecommandprompt.

3.ChoosetoopenthesampleGUIbyclickingon“OpenExistingGUI”.Clickon“Browse”tolocatewhereyousavedtheGUIfiles.

4.HereiswhattheGUIshouldlooklikewhenyouopenit:

5.Thehandlesstructurecontainsalltheinformationforthepushbutton,radiobutton,statictext,thefigureitself,aswellasoutput.Sohowexactlydoweviewandaccessthisinformation?

Therearetwowaystodothis.Clickonthe

iconontheGUIfiguretobringuptheaccompanying.mfile.Youcaninsertinabreakpointbyleftclickingontheleftsideofthe.mfileasshown.

Oryoucantypeinkeyboardintothe.mfile,asshownbelow.

Bothmethodsresultinthesamething.ThiscausestheGUItogointocommandlinemode,allowingyoutoexamineandchangethefunction’slocalworkspace.（Incidentally,thisisagreatwaytodebugyourcode!

）

6.Let’susethekeyboardmethodforthistutorial.

Typekeyboardrightbelowpushbutton1_Callback,asshowninthefigureabove.

7.Now,saveandruntheGUI.Pressthepushbutton.

8.Thecommandwindowshouldpopupandyoushouldseethefollowingatthecommandwindow.Noticethenormalcommandlinehasbeenreplacedwith“K>>”.Thisjustmeansthatyou’reinkeyboardmode.

Handles,get,andset（cont）

1.Now,let’stakealookatthevariableswithinthefunction’sworkspace.Typewhosatthecommandprompt.Thiscommandtellsyouwhatvariablesareinthelocalworkspace.Nothingtoointeresting.

2.Now,let’stakealookatthehandles.Typehandlesatthecommandprompt.Thiscommandgivesyoumoredetailsonthehandlesstructures.You’llnoticethateachobjectontheGUIfigureisaccountedfor.（figure1isthebackgroundimagethatyourcomponentsareplacedon）

3.Letssayyouwantedmoredetailsonthepropertiesofradiobutton1.Youcantypeget（handles.radiobutton1）atthecommandprompttogetalistofallthepropertiesofthisobject.Thiscommandwilldisplayallthepropertiesofthatcomponent,similartowhatyouwouldseeinthePropertyInspectorwhenyoudoubleclickonthiscomponentintheGUIDEfigure.

4.Let’ssayyouonlywanteddetailsontheStringpropertyforradiobutton1;youcantypeget（handles.radiobutton1,'String'）atthecommandprompt.Additionally,youcanstorethisvalueintoavariableforlateruse.ThegetcommandisprobablyusedmostoftenwithEditTextcomponentstoextractuserinputs.

5.LetssayyouwantedtochangetheStringpropertyonradiobutton1.Youcandothisbyusingset（handles.radiobutton1,'String','helloworld'）atthecommandprompt.

NoticethatanychangesyoumakeusingthesetcommandareinstantlyreflectedontheGUIprogram（nottheGUIDEfigure,buttheactualGUIthatisrunning）.

6.Tryinsertingthesecommandsintothecommandline:

set（handles.radiobutton1,'String','Thebuttonischanged!

'）

set（handles.radiobutton1,'BackGroundColor',[1,.3,1]）

TheGUIthatisrunningshouldnowlooklikethis:

7.Afteryou’redoneplayingaround,typereturnatthecommandprompttoexitkeyboardmode.Next,youshoulderasethekeyboardcommandthatyouplacedinthe.mfileandsaveit.Otherwise,theGUIwillkeepgoingintokeyboardmodewhenyoupushthatbutton.

58Responsesto“MATLABGUITutorial-ABriefIntroductiontohandles”

1.on14Dec2007at9:

19am1Tongtong

Thisquickshorttutorialisaclear,simplebutalsoveryinformativeone.Thanks.Ithelpsmetounderstandhandlesbetter.

2.on15Dec2007at6:

13pm2luis

Iagreewithtongtong,anotherusefulhandout.goodwork.

3.on07Jan2008at12:

13am3hlowyqdmqko

sbftjwrlkcebtxewowceffzjyambaghxvbtjbxfrkse

4.on18Feb2008at5:

32am4DaveBarr

Thanksforthepointertothistutorial-Itanswersmyproblemonhandlesexactlyandwhatasmoothwayoftesting/debuggingcode.

YourtutorialsarefareasiertounderstandthantheofficialMathlabones.

Regards

Dave

5.on19Feb2008at11:

43am5serotonin

youaredoingexcellentwork,thanksandpleasekeepon

6.on21Feb2008at6:

45am6Sikander

Mr.Q.Quanch

youdidExcelentjobtointroducehandles,briefly.Ihavefewquestions,

Q1:

isitpossibletouseh.orH.insteadofcompletehandleword?

?

?

?

?

?

?

Q2:

whatissuitablebuttontouseanimageaxisoractiveXcontrol?

?

?

morequestionswillbeforword.ifreceivedtheanswerofthesetwo

withbestregards

SikanderHayat

7.on21Feb2008at5:

03pm7QuanQuach

Sikander,

bydefault,youhavetousetheword“handles”toaccessthestructure.

Personally,Iprefertotheusetheimageaxistoplaceapicturebecauseitismorestableacrossthedifferentversionsofmatlab.

Quan

8.on04Mar2008at4:

48am8Ramya

hi,

thetutorialsarereallyhelpful.CanuplzsuggestsomesiteswhichhasprogrammingformedicalX-rayimages?

9.on12Mar2008at3:

15am9Saeed

Thaswasquickandmuchhelpfulthanks

10.on24Apr2008at1:

36am10Ali

Thanksforthetutorial,useful…..

11.on05May2008at4:

52am11mitra

hi

tnxfortehusefullinformation

butihadanotherquestion,isitpossibletocalloneofthesubfunctionsinguifromanotherfunction?

ihaveaguiandinthatiamcallinganotherfileandiwanttoplottheresultsinthissecondfunctionbutbecauseofsomeproblemsicannotsendthehandletothisfile,soithoughtmaybeicanhaveafunctioninguiandcalliteachtime.isthereanyway?

tnx

12.on06Jul2008at6:

57am12matteo

Thankyouforthisexcellenttutorial,IfounditmuchmoreinformativethantheMATLABdocumentation.

Thanks,

Matteo

13.on17Aug2008at12:

43am13Titoo

excellentjob,thankyoualot.

14.on20Aug2008at8:

29pm14Nr

verydescriptiveandinformativetutorial.Also,itiseasytolearnbecauseofsimpledescription.Thankyouverymuchforhandlesdescription.

15.on13Sep2008at8:

55am15louis

pleasehelpmeinmyprojectitisadtmfdoorlocksystem,youmustfirstcreateapasswordandthenyoumustlogininthekeypadcreatedusingdtmfandenteryourpasswordcorrectly

pleasehelpmeineedtopassthisonorbeforetuesdaypleaseguystothosewhoaregiftedwithmatlabskills….thankspleaseemailmeatlnvp_17@ifyoullhelpilreferyoutomyschoolmatesGodbless

16.on16Sep2008at1:

05am16Fikri

HiQuan,

I’mbuildingaGUI,sofarsogooduntilItriedtomakeitobjectoriented.SaythatmyGUIisinafunctioncalledgui.m,andtheessentialfunctionthatisgoingtobeusedbygui.marebothdct.mandtmt.m,hereliestheproblem,bothdct.mandtmt.mproduceshistograms,whichusespanelsinsidegui.mforgeneratingthehistograms.HowdoIdealwiththecoding,sinceitwilluseahandleforthepanelinsidethegui.m

Whatwouldyousuggestmeinthissituation.

Regards,

Fikri

17.on23Nov2008at7:

35pm17rajesh

Hey

Thankyousomuchforcreatingthispiece.Ihadbeentryingtounderstandhandlesforthewholedayandthese5minutesarethemostusefulones.

18.on13Mar2009at8:

38am18abdo

Hello………

pleaseineedhelp,ihaveprojectabout”freedomforrobotics”….”armmanipulatorforrobotics”…pleasehelpme…ineeduse”GUIMATLAB”

19.on18Mar2009at12:

49am19scf

I’musingyourexamplecode,butwhenItypein“whos”thehandlesstructisempty!

pleaseadvise…

20.on20Mar2009at3:

41am20Francesco

Higuys,

i’musingmatlabr2008btodevelopagui.Ihaveaproblemwithhandlesproperty:

wheniusegetcommandtoextractthestringinanedittext

radIds1=str2double（get（handles.rad_Ids1_edit,'String'））;

Matlabnotices

?

?

?

Errorusing==>get

Thereisno‘String’propertyinthe‘root’class.

Ifiuse

get（handles.rad_Ids1_edit）

ihaveonly

CallbackObject=[2090]

CommandWindowSize=[6822]

CurrentFigure=[2050]

Diary=off

DiaryFile=diary

Echo=off

FixedWidthFontName=CourierNew

Format=short

FormatSpacing=loose

Language=it_it.windows-1252

MonitorPositions=[（2by4）doublearray]

More=off

PointerLocation=[494397]

PointerWindow=[0]

RecursionLimit=[500]

ScreenDepth=[32]

ScreenPixelsPerInch=[96]

ScreenSize=[111024600]

ShowHiddenHandles=off

Units=pixels

BeingDeleted=off

ButtonDownFcn=

Children=[2050]

Clipping=on

CreateFcn=

DeleteFcn=

BusyAction=queue

HandleVisibility=on

HitTest=on

Interruptible=on

Parent=[]

Selected=off

SelectionHighlight=on

Tag=

Type=root

UIContextMenu=[]

UserData=[]

Visible=on

stringpropertythereisn’t.Why?

Francesco

21.on20Mar2009at9:

44am21ZaneMontgomery

HiFransesco,

Itlookslikesomethingiswrongwithyouredittextbox.Yourhandlesmakeitseemlikeyou’veaccessedthematlabrootwhichyoudon’twanttochange（I’mguessing）.

“Therooti