Cross platform rapid GUI framework for golang based on Dear ...

AllenDang/giu, giu Cross platform rapid GUI framework for golang based on Dear ImGui and the great golang binding imgui-go. Actualmiddlewares Argo Audio&Music Authentication&OAuth Benchmarks MoreCategories BotBuilding BuildTools Caching CloudComputing CodeAnalysis CommandLine Command-lineOptionParsers Compiler Compression Configuration ConsoleUserInterface ContinuousIntegration Cryptography DataProcessing DataStructures DataVisualization Database DatabaseDrivers Databaseschemamigration. Databasetools DateandTime DependencyInjection DevelopmentTools DevOpsTools DistributedSystems Editor Email EmbeddableScriptingLanguages EncodingsandCharacterSets ErrorHandling FileHandling FileSystem Financial Forms FrameworksandToolkits GameDevelopment GIS Git Goroutines GUIsandWidgetToolkits HTTPClients HTTPmiddlewares Imagestools InstantMessaging IoT(InternetofThings) JobScheduler JSON Key-ValueStore LanguageandLinguistics LearningTutorial Librariesforvalidation LoggingandMonitoring MachineLearning Mathematics Messaging Microservices MicrosoftExcel Miscellaneous NaturalLanguageProcessing Network NetworkingDNS ORM P2PandFileSharing PackageManagement Performance ProjectLayout PublicAPIWrappers QueryLanguage ResourceEmbedding Routers ScienceandDataAnalysis Security Serialization ServerApplications SourceCodeManagement SQLQueryBuilder StorageServer TemplateEngines TestingFrameworks TextProcessing Utilities UUIDLibraries Video VirtualMachinesandLanguages WebApplications WebCrawling WebFrameworks WebAssembly Websockets XMLLibraries PopularRepo LatestRepo Resources All Article News Book Tutorial Overview Issues 8 Releases v0.5.6 MITLicense Star1.1k Watch26 Fork72 CrossplatformrapidGUIframeworkforgolangbasedonDearImGui. AllenDang Lastupdate:Dec8,2021 Relatedtags GUIsandWidgetToolkits golang gui ui cross-platform uikit imgui dear-imgui Overview giu CrossplatformrapidGUIframeworkforgolangbasedonDearImGuiandthegreatgolangbindingimgui-go. Anycontribution(features,widgets,tutorials,documentsandetc...)isappreciated! SupportedPlatforms giuisbuiltuponGLFWv3.3,soidealygiucouldsupportallplatformsthatGLFWv3.3supports. Windows(onlytestedonWindows10x64) MacOS(onlytestedonMacOSv10.15) Linux(thanksremehtotestit) Raspberrypi3b(thankssndvapstotestit) Features ComparetootherDearImGuigolangbindings,giuhasfollowingfeatures: Smallexecutablefilesize(<3mbafterupxcompressionfortheexample/helloworlddemo). Live-updateduringtheresizingofOSwindow(implementedonGLFW3.3andOpenGL3.2). Redrawonlywhenusereventoccurred.Costsonly0.5%CPUusagewith60FPS. DeclarativeUI(seeexamplesformoredetail). DPIawareness(autoscalefontandUItoadaptehighDPImonitor). Dropinusage,noneedtoimplementrenderandplatform. OSclipboardsupport. Helloworld packagemain import( "fmt" g"github.com/AllenDang/giu" ) funconClickMe(){ fmt.Println("Helloworld!") } funconImSoCute(){ fmt.Println("Imsooooooocute!!") } funcloop(){ g.SingleWindow("helloworld").Layout( g.Label("Helloworldfromgiu"), g.Line( g.Button("ClickMe").OnClick(onClickMe), g.Button("I'msocute").OnClick(onImSoCute), ), ) } funcmain(){ wnd:=g.NewMasterWindow("Helloworld",400,200,g.MasterWindowFlagsNotResizable,nil) wnd.Run(loop) } Hereisresult. Install ThebackendofgiudependsonOpenGL3.3,makesureyourenvironmentsupportsit(sofarasIknownsomeVirualMachinelikeVirualBoxdoesn'tsupportit). MacOS xcode-select--install gogetgithub.com/AllenDang/[email protected] Windows Installmingwdownloadhere.Thanks@alchem1ster! Addthebinariesfolderofmingwtothepath(usuallyis\mingw64\bin). gogetgithub.com/AllenDang/[email protected] Linux NeedhelpherecauseIdon'thaveanylinuxexperience. Deploy BuildMacOSversiononMacOS. gobuild-ldflags"-s-w". BuildWindowsversiononWindows. gobuild-ldflags"-s-w-H=windowsgui-extldflags=-static". BuildWindowsversiononMacOS. Installmingw-64. brewinstallmingw-w64 Prepareandembedapplicationicontoexecutableandbuild. cat>YourExeName.rc<Fonts[0]->IsLoaded()&&"FontAtlasnotbuilt.Didyoucallio.Fonts->GetTexDataAsRGBA32()/GetTexDataAsAlpha8()?"'failed. SIGABRT:abort PC=0x7f31fc71b9e5m=0sigcode=18446744073709551610 signalarrivedduringcgoexecution goroutine1[syscall,lockedtothread]: runtime.cgocall(0x634e60,0xc00011fda0,0x4000) /usr/local/go/src/runtime/cgocall.go:154+0x5bfp=0xc00011fd70sp=0xc00011fd38pc=0x48673b github.com/AllenDang/imgui-go._Cfunc_iggNewFrame() _cgo_gotypes.go:4742+0x3cfp=0xc00011fda0sp=0xc00011fd70pc=0x57d1dc github.com/AllenDang/imgui-go.NewFrame(...) /home/username/go/pkg/mod/github.com/!allen!dang/[email protected]/imgui.go:30 github.com/AllenDang/giu.(*MasterWindow).render(0xc00031a000) /run/media/username/SALATKA/mystuff/test/giu/MasterWindow.go:182+0x9bfp=0xc00011fe10sp=0xc00011fda0pc=0x62505b github.com/AllenDang/giu.(*MasterWindow).run.func1() /run/media/username/SALATKA/mystuff/test/giu/MasterWindow.go:201+0x59fp=0xc00011fe50sp=0xc00011fe10pc=0x629eb9 github.com/faiface/mainthread.Call.func1() /home/username/go/pkg/mod/github.com/faiface/[email protected]/mainthread.go:63+0x2ffp=0xc00011fe80sp=0xc00011fe50pc=0x58b48f github.com/faiface/mainthread.Run(0xc0003184e0) /home/username/go/pkg/mod/github.com/faiface/[email protected]/mainthread.go:44+0xb1fp=0xc00011ff08sp=0xc00011fe80pc=0x58b211 github.com/AllenDang/giu.(*MasterWindow).Run(0xc00031a000,0x8dcd58) /run/media/username/SALATKA/mystuff/test/giu/MasterWindow.go:258+0x65fp=0xc00011ff28sp=0xc00011ff08pc=0x625305 main.main() /run/media/username/SALATKA/mystuff/test/giu/examples/widgets/widgets.go:211+0x18ffp=0xc00011ff88sp=0xc00011ff28pc=0x63196f runtime.main() /usr/local/go/src/runtime/proc.go:225+0x256fp=0xc00011ffe0sp=0xc00011ff88pc=0x4bb4f6 runtime.goexit() /usr/local/go/src/runtime/asm_amd64.s:1371+0x1fp=0xc00011ffe8sp=0xc00011ffe0pc=0x4ed101 goroutine18[chanreceive]: github.com/faiface/mainthread.Call(0xc000240ba0) /home/username/go/pkg/mod/github.com/faiface/[email protected]/mainthread.go:66+0xc5 github.com/AllenDang/giu.(*MasterWindow).run(0xc00031a000) /run/media/username/SALATKA/mystuff/test/giu/MasterWindow.go:199+0xa5 github.com/AllenDang/giu.(*MasterWindow).Run.func1() /run/media/username/SALATKA/mystuff/test/giu/MasterWindow.go:263+0x4d github.com/faiface/mainthread.Run.func1(0xc0003184e0,0xc000320000) /home/username/go/pkg/mod/github.com/faiface/[email protected]/mainthread.go:37+0x27 createdbygithub.com/faiface/mainthread.Run /home/username/go/pkg/mod/github.com/faiface/[email protected]/mainthread.go:36+0xa5 rax0x0 rbx0x7f31fc593740 rcx0x7f31fc71b9e5 rdx0x0 rdi0x2 rsi0x7ffd630b7c70 rbp0x7f31fc871680 rsp0x7ffd630b7c70 r80x0 r90x7ffd630b7c70 r100x8 r110x246 r120x91a372 r130x1c18 r140x91e618 r150xffffffffffffffff rip0x7f31fc71b9e5 rflags0x246 cs0x33 fs0x0 gs0x0 exitstatus2 I'mrunningexamples/widgets. mysystem: OS:Fedora33 desktop:gnome-shell3.38.4 openedbygucio32119 examples/dynamicloadfont:examplecrashes Hi! Iwantedtorunexamples/dynmiacloadfont butitpanics: dynamicloadfont:imgui.cpp:7112:voidImGui::ErrorCheckNewFrameSanityChecks():Assertion`g.IO.Fonts->Fonts[0]->IsLoaded()&&"FontAtlasnotbuilt.Didyoucallio.Fonts->GetTexDataAsRGBA32()/GetTexDataAsAlpha8()?"'failed. SIGABRT:abort PC=0x7f43aff019d5m=0sigcode=18446744073709551610 signalarrivedduringcgoexecution goroutine1[syscall,lockedtothread]: runtime.cgocall(0x6131f0,0xc0000cddb8,0x4000) /usr/local/go/src/runtime/cgocall.go:154+0x5bfp=0xc0000cdd88sp=0xc0000cdd50pc=0x48567b github.com/AllenDang/imgui-go._Cfunc_iggNewFrame() _cgo_gotypes.go:4546+0x3cfp=0xc0000cddb8sp=0xc0000cdd88pc=0x571d5c github.com/AllenDang/imgui-go.NewFrame(...) /home/user/go/pkg/mod/github.com/!allen!dang/[email protected]/imgui.go:28 github.com/AllenDang/giu.(*MasterWindow).render(0xc000186000) /home/user/git/d2/me/giu/MasterWindow.go:174+0x96fp=0xc0000cde28sp=0xc0000cddb8pc=0x60faf6 github.com/AllenDang/giu.(*MasterWindow).run.func1() /home/user/git/d2/me/giu/MasterWindow.go:193+0x59fp=0xc0000cde68sp=0xc0000cde28pc=0x610219 github.com/faiface/mainthread.Call.func1() /home/user/go/pkg/mod/github.com/faiface/[email protected]/mainthread.go:63+0x2ffp=0xc0000cde98sp=0xc0000cde68pc=0x57804f github.com/faiface/mainthread.Run(0xc00000e4c8) /home/user/go/pkg/mod/github.com/faiface/[email protected]/mainthread.go:44+0xb1fp=0xc0000cdf20sp=0xc0000cde98pc=0x577dd1 github.com/AllenDang/giu.(*MasterWindow).Run(0xc000186000,0x8aca58) /home/user/git/d2/me/giu/MasterWindow.go:250+0x65fp=0xc0000cdf40sp=0xc0000cdf20pc=0x60fda5 main.main() /home/user/git/d2/me/giu/examples/dynmiacloadfont/dynamicloadfont.go:34+0x73fp=0xc0000cdf88sp=0xc0000cdf40pc=0x6108f3 runtime.main() /usr/local/go/src/runtime/proc.go:225+0x256fp=0xc0000cdfe0sp=0xc0000cdf88pc=0x4ba0f6 runtime.goexit() /usr/local/go/src/runtime/asm_amd64.s:1371+0x1fp=0xc0000cdfe8sp=0xc0000cdfe0pc=0x4ebb81 goroutine5[chanreceive]: github.com/faiface/mainthread.Call(0xc00009af60) /home/user/go/pkg/mod/github.com/faiface/[email protected]/mainthread.go:66+0xc5 github.com/AllenDang/giu.(*MasterWindow).run(0xc000186000) /home/user/git/d2/me/giu/MasterWindow.go:191+0xa5 github.com/AllenDang/giu.(*MasterWindow).Run.func1() /home/user/git/d2/me/giu/MasterWindow.go:255+0x4d github.com/faiface/mainthread.Run.func1(0xc00000e4c8,0xc000024120) /home/user/go/pkg/mod/github.com/faiface/[email protected]3/mainthread.go:37+0x27 createdbygithub.com/faiface/mainthread.Run /home/user/go/pkg/mod/github.com/faiface/[email protected]/mainthread.go:36+0xa5 rax0x0 rbx0x7f43afd79740 rcx0x7f43aff019d5 rdx0x0 rdi0x2 rsi0x7fff653957b0 rbp0x7f43b0057680 rsp0x7fff653957b0 r80x0 r90x7fff653957b0 r100x8 r110x246 r120x8e48b2 r130x1bc8 r140x8e8978 r150xffffffffffffffff rip0x7f43aff019d5 rflags0x246 cs0x33 fs0x0 gs0x0 exitstatus2 openedbygucio32119 DPIscale-unexpectedbehavior Thiscommithttps://github.com/AllenDang/giu/commit/27ecca73d762cacc8bdd23e12dd18c07b76623ab breaksUIrenderingonhighmonitorresolution. Before: After: openedbyaleksandrzhiliaev17 Removeimgui-go,implot,imnodes,ImGuiColorTextEditfromrepo @AllenDangwhatareyourthoughtsonmergingthesechangesupstream? Iremovedallofthehardcopiesofthedependenciesinfavorofimportingthemviaaforkofimgui-go:https://github.com/ianling/imgui-go--thisforkisup-to-datewiththeupstreamimgui-gorepoasofyesterday,andalsohasallofthechangesyou'vemadeinthegiurepo. Ifyouareinterestedinchangingtothisstyle,wecouldmergethisPRandIcantransfertheforkianling/imgui-gotoyouraccount.AllinstancesofianlingwouldalsoneedtobechangedbacktoAllenDang Ithinkthemainbenefitsofmakingthischangeare: reducesclutterbyhavingaclearseparationbetweenthelow-levelCGowrappersinimgui-go/implot/imnodes/ImGuiColorTextEditandthecleanhigh-levelAPIprovidedbygiu easiertomaintain.Ifyouneedtomakecustomchangestoimgui-go(oroneoftheotherC++libraries),yousimplycommitthechangeintheforkandimportthenewcommitingiu.Iftheofficialimgui-goreporeleasesanupdate,orImGuiitselfreceivesanupdate,itisverysimpletoupdatethisfork. youcanalsoupdatetheimgui-goforkseparatelyfromgiu,andcontinuebuildinggiufromthepreviouscommitiftherearebreakingchangesandyoudon'thavetimetoupdatebothreposatonce. openedbyianling15 [Windows]gogetgithub.com/AllenDang/giufails Notsurewhattherequirementsare,justfollowingalongwiththeREADME. Error: #github.com/AllenDang/giu/imgui C:\Users\#####\AppData\Local\Temp\go-build3633627171\b001\_x039.o:Infunction`ImeSetInputScreenPosFn_DefaultImpl': ..\..\..\go\pkg\mod\github.com\!allen!dang\[email protected]\imgui/imgui.cpp:10724:undefinedreferenceto`ImmGetContext' ..\..\..\go\pkg\mod\github.com\!allen!dang\[email protected]\imgui/imgui.cpp:10730:undefinedreferenceto`ImmSetCompositionWindow' ..\..\..\go\pkg\mod\github.com\!allen!dang\[email protected]\imgui/imgui.cpp:10731:undefinedreferenceto`ImmReleaseContext' collect2.exe:error:ldreturned1exitstatus openedbybartimus-primed15 testpullrequests @allenDangwhataboutagithubworkflow,whichwillcheckifprojectisabletobuild? oryoucanaddbranchprotectionruletomasterwithRequireteststatusfromtravisCItopreventunbuildablePRtobemerged. Originallypostedby@gucio321inhttps://github.com/AllenDang/giu/issues/314#issuecomment-912970533 openedbygucio32115 Raceconditionbetweentexturecreationanddeletion(viafinalizer) Texturecreationcanrandomlyfailifanothertexturehappenstobefinalizinginthebackground. Thisiscausingdeadlocksinourproject. ~~ThedeadlockishappeningbetweenTexture.releaseandNewTextureFromRgba.~~readbelow openedbygravestench15 addwrapperforimguiPlotLineswidget ThispatchonlywrapsthePlotLineswidgetfromimgui,butthehistogram andotherplottingwidgetscouldbewrappedalso. Thisalsoaddsanexampleinexamples/plotshowingbothg.PlotLines() andg.PlotLinesV(). Futurework:theimguiplottingwidgetisalittlelimited,itwouldbe niceforGIUtosupportamorerobustplottingsystem.Thiscould perhapsbedonefromscratchbasedonaCanvaswidget,possiblyby writingaback-endforgonum/plot. openedbycharlesdaniels13 Moredetailedcrashlogs Relatedproblem whenIusegmdeploydeployedmyapp,itworks.Butsometimesitwillcrashaccordingtosomeuseractions.Inmacconsoleapp,Icanonlyseesomelogslikebelow: Nov1818:23:31172-11-2-103com.apple.xpc.launchd[1](com.yourcompany.ImStock.142800.B51455B5-8491-4229-BACE-10E765B6C578[56465]):Serviceexitedwithabnormalcode:2 Yourrequest Iwishsomemoredetailedlogscanbecollected. Alternativesolution Noresponse Additionalcontext Noresponse enhancement  openedbydaiwhea2 [FeatureRequest]ArethereplansforArm64onMacOS? Relatedproblem Noresponse Yourrequest Itwouldbenice-ifitisfeasible-tobeabletoprovideUniversalbinariesonMacOS.IbelievethetheM1processorrunsbinariesbuiltfromGiuwithouttroublesoIdon'tthinkthere'sanythinglikeadeadlineforthis. Alternativesolution Noresponse Additionalcontext Noresponse enhancement  openedbymacbutch1 splitLayoutsometimescrasheswhileresizingwindow. Hithere! democode packagemain import( g"github.com/AllenDang/giu" ) funcloop(){ g.Window("wnd").Size(80,80).Layout( g.SplitLayout(g.DirectionHorizontal,true,80, g.Layout{ g.Label("Test1"), }, g.Layout{ g.Label("Test2"), }, ), ) } funcmain(){ w:=g.NewMasterWindow("Splitter",640,480,0) w.Run(loop) } panicmessage main:imgui_widgets.cpp:731:boolImGui::InvisibleButton(constchar*,constImVec2&,ImGuiButtonFlags):Assertion`size_arg.x!=0.0f&&size_arg.y!=0.0f'failed. SIGABRT:abort PC=0x7f4cc779f2a2m=0sigcode=18446744073709551610 signalarrivedduringcgoexecution goroutine1[syscall,lockedtothread]: runtime.cgocall(0x5e96a0,0xc0000cb9a0) /usr/local/go/src/runtime/cgocall.go:156+0x5cfp=0xc0000cb978sp=0xc0000cb940pc=0x485f9c github.com/AllenDang/imgui-go._Cfunc_iggInvisibleButton(0x304e170,0xc000298ef0) _cgo_gotypes.go:4084+0x4cfp=0xc0000cb9a0sp=0xc0000cb978pc=0x550a6c github.com/AllenDang/imgui-go.InvisibleButton({0xc000298e40,0x200000003},{0x40800000,0x0}) /home/username/git/d2/me/giu/vendor/github.com/AllenDang/imgui-go/imgui.go:392+0x8dfp=0xc0000cb9e0sp=0xc0000cb9a0pc=0x55886d github.com/AllenDang/giu.(*VSplitterWidget).Build(0xc0002886e0) /home/username/git/d2/me/giu/Widgets.go:2137+0xc5fp=0xc0000cba70sp=0xc0000cb9e0pc=0x5e5e45 github.com/AllenDang/giu.(*RowWidget).Build.func1({0x8ba160,0xc0002886e0}) /home/username/git/d2/me/giu/Widgets.go:59+0x159fp=0xc0000cba98sp=0xc0000cba70pc=0x5e5339 github.com/AllenDang/giu.Layout.Range({0xc000280f60,0x3,0x552265},0xc00028b0b0) /home/username/git/d2/me/giu/Layout.go:48+0x9cfp=0xc0000cbaf0sp=0xc0000cba98pc=0x5e2bfc github.com/AllenDang/giu.(*RowWidget).Build(0xc0002858c0) /home/username/git/d2/me/giu/Widgets.go:41+0x85fp=0xc0000cbb28sp=0xc0000cbaf0pc=0x5e51a5 github.com/AllenDang/giu.Layout.Build({0xc0000cbc30,0x1,0x8ba500}) /home/username/git/d2/me/giu/Layout.go:28+0x58fp=0xc0000cbb50sp=0xc0000cbb28pc=0x5e2b18 github.com/AllenDang/giu.(*SplitLayoutWidget).Build(0xc00028c410) /home/username/git/d2/me/giu/SplitLayout.go:130+0x5fdfp=0xc0000cbc80sp=0xc0000cbb50pc=0x5e4b3d github.com/AllenDang/giu.Layout.Build({0xc0002886c0,0x2,0x0}) /home/username/git/d2/me/giu/Layout.go:28+0x58fp=0xc0000cbca8sp=0xc0000cbc80pc=0x5e2b18 github.com/AllenDang/giu.(*WindowWidget).Layout(0xc0000cbd90,{0xc0000cbd80,0x1,0x1}) /home/username/git/d2/me/giu/Window.go:139+0x23efp=0xc0000cbd30sp=0xc0000cbca8pc=0x5e62fe main.loop() /home/username/git/d2/me/giu/examples/split-layout-bug/main.go:8+0x2a5fp=0xc0000cbdd8sp=0xc0000cbd30pc=0x5e6fe5 github.com/AllenDang/giu.(*MasterWindow).render(0xc00007e000) /home/username/git/d2/me/giu/MasterWindow.go:192+0xa5fp=0xc0000cbe48sp=0xc0000cbdd8pc=0x5e3a65 github.com/AllenDang/giu.(*MasterWindow).run.func1() /home/username/git/d2/me/giu/MasterWindow.go:210+0x48fp=0xc0000cbe80sp=0xc0000cbe48pc=0x5e3cc8 github.com/faiface/mainthread.Call.func1() /home/username/git/d2/me/giu/vendor/github.com/faiface/mainthread/mainthread.go:63+0x26fp=0xc0000cbeb0sp=0xc0000cbe80pc=0x55cde6 github.com/faiface/mainthread.Run(0xc00000e4c8) /home/username/git/d2/me/giu/vendor/github.com/faiface/mainthread/mainthread.go:44+0xc9fp=0xc0000cbf28sp=0xc0000cbeb0pc=0x55cba9 github.com/AllenDang/giu.(*MasterWindow).Run(0xc00007e000,0x890580) /home/username/git/d2/me/giu/MasterWindow.go:283+0x72fp=0xc0000cbf48sp=0xc0000cbf28pc=0x5e3d72 main.main() /home/username/git/d2/me/giu/examples/split-layout-bug/main.go:22+0x3dfp=0xc0000cbf80sp=0xc0000cbf48pc=0x5e703d runtime.main() /usr/local/go/src/runtime/proc.go:255+0x227fp=0xc0000cbfe0sp=0xc0000cbf80pc=0x4b7fa7 runtime.goexit() /usr/local/go/src/runtime/asm_amd64.s:1581+0x1fp=0xc0000cbfe8sp=0xc0000cbfe0pc=0x4e39a1 goroutine5[chanreceive]: github.com/faiface/mainthread.Call(0xc000280e70) /home/username/git/d2/me/giu/vendor/github.com/faiface/mainthread/mainthread.go:66+0xb1 github.com/AllenDang/giu.(*MasterWindow).run(0xc00007e000) /home/username/git/d2/me/giu/MasterWindow.go:208+0x87 github.com/AllenDang/giu.(*MasterWindow).Run.func1() /home/username/git/d2/me/giu/MasterWindow.go:288+0x4b github.com/faiface/mainthread.Run.func1() /home/username/git/d2/me/giu/vendor/github.com/faiface/mainthread/mainthread.go:37+0x26 createdbygithub.com/faiface/mainthread.Run /home/username/git/d2/me/giu/vendor/github.com/faiface/mainthread/mainthread.go:36+0xbd rax0x0 rbx0x7f4cc7615740 rcx0x7f4cc779f2a2 rdx0x0 rdi0x2 rsi0x7ffe40acb370 rbp0x7f4cc79278f0 rsp0x7ffe40acb370 r80x0 r90x7ffe40acb370 r100x8 r110x246 r120x8e8ed5 r130x2db r140x8e6fe8 r150xef rip0x7f4cc779f2a2 rflags0x246 cs0x33 fs0x0 gs0x0 exitstatus2 toreproduce runthedemo playwithwindowresizing(catchbottom-rightcorner) appwillcrash openedbygucio3210 SplitLayout.go:SetStyleChildBGseemstobeunnecessary Hithere, whatdoesexactlydothisline? Style().SetColor(StyleColorChildBg,Vec4ToRGBA(imgui.CurrentStyle().GetColor(imgui.StyleColorChildBg))).To( wecanfinditinSplitLayout.go:https://github.com/AllenDang/giu/blob/7a1a262cf0eb925dd66f6604d724506ba32023e0/SplitLayout.go#L78 openedbygucio3211 CalcTextSizeWidthis2timestoobig IfImakeaprogramthatsetsitemspacingandframepaddingto0,setsamonospacefont,thencallsGetAvailableRegionandCalcTextSizeandtriestofillthescreenwithcharacters,onlyhalfthewidthofthescreenisactuallyfilled.ItseemsthatCalcTextSizereturnsawidththatis2timestoobig? Belowisanexampleprogramthattriestofillthescreenwith"."'s,butonlysucceedsinfillingthelefthalf. packagemain import( "fmt" G"github.com/AllenDang/giu" I"github.com/AllenDang/imgui-go" ) funcdraw(){ G.SingleWindow().Layout( G.Child().Layout( G.Custom(func(){ I.PushStyleVarVec2(I.StyleVarFramePadding,I.Vec2{X:0,Y:0}) I.PushStyleVarVec2(I.StyleVarItemSpacing,I.Vec2{X:0,Y:0}) w,h:=G.GetAvailableRegion() cw,ch:=G.CalcTextSize(".") numline:=int(h/ch) numchar:=int(w/cw) fmt.Printf("w=%f,h=%f,cw=%f,ch=%f,numline=%d,numchar=%d\n",w,h,cw,ch,numline,numchar) fori:=0;i