Hello, I have a problem in a card game project. I'm currently reworking some mechanisms to store the state in a normal class (without Composable methods) and make the GUI just watching this state. To synchronise both, I'm using some Composable callback. But for an unknown reason, the GUI does not recompose itself when state changes. It seems that notifications of the callbacks don't work, but I can't find why. Do you have an idea ? I put in a thread a link to a small reproducer and a video showing the issue.

Hello, is there a way to react on mouse scrolling events? (like scroll up, scroll down with the mouse wheel)? Thank you very much 🙂

About creating a common project for Android and Desktop composables: Based on example provided by @darkmoon_uk https://kotlinlang.slack.com/archives/C01D6HTPATV/p1623990917153600?thread_ts=1623971327.146800&cid=C01D6HTPATV I setup the gradle file accordingly, but I still get this issue:

Hallo, quick question: Is it possible to set the UI Scaling (DPI) at runtime?

I have finally added the Desktop app to the D-KMP sample: https://github.com/dbaroncelli/D-KMP-sample (featured by JetBrains in their latest KMM update) At the moment the composables for Android and Desktop are separate, in their own project directory: /*androidApp*/…../composables /*desktopApp*/…../composables They are exactly the same apart from a very small difference (the Android app uses the

BackHandler

composable too). All the rest is identical, as they are pure layout, with NO(!) AACViewModel/AndroidNavigation/DI dependencies whatsoever. My idea was to actually create an additional multiplatform project directory “*composables*”: /_*composables*/commonMain_ */composables*/androidMain */composables*/desktopMain just for composables shared by Android and Desktop, but I found it incredible hard, as Gradle doesn’t seem to like me. If there is anyone here who understands Gradle and the JetBrains Compose plugin very well, and has 15 minutes to spare to move the composables to their own separate project, it would be very appreciated.

Is the new announcement of Windows 11 about running Android App natively without needing an emulator have any impact on the Jetpack compose ?! In another term, is this mean that in the future we can develop desktop apps just using Android development tools ?!

Is there a way to limit the number/types of components in a composable and to make the compiler complain about it (i.e. compile error, not runtime)? Say for instance, that I have my own Button implementation where I only want to allow first one Icon and then one Text, in that order.

It’s very weird that multiplatform compose plugin is 

org.jetbrains.compose

, while the actual package is 

androidx.compose

. Is there a plan to make domain names more consistent?

Hello, I have a question about rows and columns. You can see on the screenshot that I currently display a scrollable grid of cards and a fixed row of other cards. But that's really not nice. How can I make the row scrollable, following the grid ? I join a thread with the screenshot and the components organisation.

Please Help, I update kotlin plugin to 1.5.20 and I know it's not compile How to return to old 1.5.10 I tried to install it from desk using zip file but I had a lot of problems of Android bundles !!! What I have to do know ?

Hello everyone, I'm unsure as to why I am unable to run a new compose desktop project that I just made. Stacktrace in the thread, and the error message looks like this:

Process 'command '/home/jay/.jdks/azul-15.0.3/bin/java'' finished with non-zero exit value 134

Update: I also tried pulling the desktop template from the jetbrains-compose repository and am still getting the same error. If it helps, the Kotlin version is also 1.5.10, but I had to install it from a plugin download since I had accidentally updated from 1.4.32 to 1.5.20.

How to select a Directory ?! Like a FileDialog ?!

Hi All, I found Modifier.onPreviewKeyEvent{} is called twice on every key pressed. Is there any way to just take one callback ?

Hey folks, is there any way to view the stdout/logging output of the Compose application running as a macOS .DMG executable? I seem to have some error causing the application not to launch properly when it is run as an executable but not when running it from IntelliJ

latest version includes support for @Preview?

With

0.5.0-build229

we implemented new experimental feature we’d like people to experiment with and help us to get improved. Namely basic non-interactive preview. To use, switch to

0.5.0-build229

and add

implementation(compose.uiTooling)

into

dependencies

block. Then install IDE plugin from https://plugins.jetbrains.com/plugin/16541-compose-multiplatform-ide-support/versions/alpha/125571. Add

@Preview

annotation to argument-less

@Composable

function and you’ll have gutter like shown below. Click it and function preview could be seen in “Desktop Preview” pane of IDEA. Thanks to @alexey.tsvetkov for getting that up and running! Known issues: • put function with

@Preview

to file where no

main()

function exists, as it conflicts with run configuration. We plan to fix it soon. • preview creates stale run configurations. We plan to fix it soon. • preview pane doesn’t look eye candy • running preview requires two clicks • no automated re-running of preview on code change Anyway, share your experience, and maybe help with improvements, code is at https://github.com/JetBrains/compose-jb/tree/master/idea-plugin

Another feature of

0.5.0-build229

is support of linux-arm64 in Compose, i.e Ubuntu 21.04 on Raspberry Pi 400 is known to work. And due to decent graphical hardware of this machine we can run using OpenGL hardware acceleration. See video below.

Need some help with layout: outer wrapper is

Column

, there are some elements in it, but I need the last one to be at the bottom of the screen. Weights working bad (good on preview, but collapses button on device): Any ideas, guys?

Hello, I have a problem with a list and a dropdown menu. The goal of this page is to display and configure the different player's game decks. A dropdown menu allows you to switch between decks. There is also a button to create a new deck : when clicked, a new deck is added to the list. As you can see on the video, the problem is that the new deck is added to the list... until you try to select it. When you click on it, it disappears and you can never configure it. Do you have any idea to solve that issue ? I join in a thread a video caption and a link to a small reproducer. Edit: Problem solved :)

After upgrading to

0.5.0-build229

I get an exception, because I have set

size

in the `Windows`’s state

Window(onCloseRequest = {}, undecorated = true, resizable = false, state = WindowState(size = WindowSize(400.dp, 200.dp)))

The exception:

Trying METAL rendering...
Exception in thread "main" java.awt.IllegalComponentStateException: The window is showing on screen.
	at java.desktop/java.awt.Window.setLocationByPlatform(Window.java:3478)
	at androidx.compose.ui.util.Windows_desktopKt.setLocationByPlatformSafely(Windows.desktop.kt:94)
	at androidx.compose.ui.util.Windows_desktopKt.setPositionSafely(Windows.desktop.kt:66)
	at androidx.compose.ui.util.Windows_desktopKt.setPositionSafely(Windows.desktop.kt:50)
	at androidx.compose.ui.window.Window_desktopKt$Window$5$1$9.invoke(Window.desktop.kt:183)
	at androidx.compose.ui.window.Window_desktopKt$Window$5$1$9.invoke(Window.desktop.kt:183)
	at androidx.compose.ui.util.ComponentUpdater$UpdateScope.set(ComponentUpdater.kt:40)
	at androidx.compose.ui.window.Window_desktopKt$Window$5$1.invoke(Window.desktop.kt:183)
	at androidx.compose.ui.window.Window_desktopKt$Window$5$1.invoke(Window.desktop.kt:174)
	at androidx.compose.ui.util.ComponentUpdater.update(ComponentUpdater.kt:27)
	at androidx.compose.ui.window.Window_desktopKt$Window$5.invoke(Window.desktop.kt:174)
	at androidx.compose.ui.window.Window_desktopKt$Window$5.invoke(Window.desktop.kt:173)
	at androidx.compose.ui.window.AwtWindow_desktopKt$AwtWindow$3.invoke(AwtWindow.desktop.kt:87)
	at androidx.compose.ui.window.AwtWindow_desktopKt$AwtWindow$3.invoke(AwtWindow.desktop.kt:86)
	at androidx.compose.ui.util.UpdateEffect_desktopKt$UpdateEffect$2$performUpdate$2.invoke(UpdateEffect.desktop.kt:58)
	at androidx.compose.ui.util.UpdateEffect_desktopKt$UpdateEffect$2$performUpdate$2.invoke(UpdateEffect.desktop.kt:57)
	at androidx.compose.runtime.snapshots.Snapshot$Companion.observe(Snapshot.kt:1788)
	at androidx.compose.runtime.snapshots.SnapshotStateObserver.observeReads(SnapshotStateObserver.kt:119)
	at androidx.compose.ui.util.UpdateEffect_desktopKt$UpdateEffect$2.invoke$performUpdate(UpdateEffect.desktop.kt:54)
	at androidx.compose.ui.util.UpdateEffect_desktopKt$UpdateEffect$2.access$invoke$performUpdate(UpdateEffect.desktop.kt:47)
	at androidx.compose.ui.util.UpdateEffect_desktopKt$UpdateEffect$2$performUpdate$1$1.invoke(UpdateEffect.desktop.kt:56)
	at androidx.compose.ui.util.UpdateEffect_desktopKt$UpdateEffect$2$performUpdate$1$1.invoke(UpdateEffect.desktop.kt:56)
	at androidx.compose.ui.util.UpdateEffect_desktopKt$UpdateEffect$1.invokeSuspend(UpdateEffect.desktop.kt:43)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
	at java.desktop/java.awt.event.InvocationEvent.dispatch$$$capture(InvocationEvent.java:316)
	at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:770)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:715)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:740)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)

Any pointers? If I remove the

state = WindowState

everything is ok.

Hey Everyone I need to send videos stream from desktop to clients via RTMP. Is there a library which does that? actually i am just an android app developer trying to build a single application for both android and desktop thanks to “compose for desktop”.

Is

remember

supposed to be usable with the

by

keyword like below?

var loadingState by remember { mutableStateOf(Startup.LOADING) }

I am not able to use it most of the time and the IDE reports the error:

Type 'TypeVariable(T)' has no method 'getValue(Nothing?, KProperty<*>)' and thus it cannot serve as a delegate

In compose examples I see

remember

used with the

by

keyword, am I missing something? Here's my imports:

import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember

👀 https://github.com/JetBrains/JWM

Hi folks, I did a simple solution to listen to Ubuntu theme change for Compose for Desktop. https://gist.github.com/DevSrSouza/1b0c3840c9d0b62e8b7bba38ecaebb5f

Is it possible to create a menu bar app on macOS with compose-desktop?

Is there any sort of Date Picker element in Compose for Desktop?

how can i make a

SwingPanel

adopt a speciifc Look and Feel? I tried using

UIManager

to set it, but it doesn’t appear to have any effect

I want to implement some Ctrl + C copy & past logic. What is the compose intended way to access selected Text or get selection Events? Ps. Why is the main class handling selection (

SelectionRegistrar

) internal and not accessible for everyone?