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# compose-desktop
  • k
    Hi folks. Is it possible to set a different 
    packageName
    per platform? I've been trying various combinations but it leads to strange results. For example, setting 
    nativeDistributions.packageName
    and 
    nativeDistributions.macOS.packageName
    results in 
    nativeDistributions.packageName
    being used. If I also set 
    nativeDistributions.windows.packageName
    the outcome is that the package name for windows is used for all platforms e.g.:
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    compose.desktop {
    application {
        mainClass = "org.example.project.MainKt"

        nativeDistributions {
            targetFormats(TargetFormat.Dmg, TargetFormat.Msi, TargetFormat.Deb)
            packageName = "org.example.project"
            packageVersion = "1.0.0"

            macOS {
                packageName = "Foo"
            }

            windows {
                packageName = "Bar"
            }
        }
    }
}
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  • u
    When I'm in darkmode, and I resize the window quickly, it seems that the compose ui is not keeping up & I'm seeing flashes of the "window" underneath. Am I doing something wrong?
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    fun main(args: Array<String>) {
    singleWindowApplication(
        title = "Git Gooey",
        state = WindowState(size = DpSize(width = 1600.dp, 960.dp))
    ) {
        App()
    }
}

@Composable
private fun App() {
    AppTheme {
        Surface(color = MaterialTheme.colorScheme.background) {
            MainPanes()
        }
    }
}
    Code I believe is nothing special. Any way around that?
    Screen Recording 2025-10-22 at 16.05.48.mov
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  • u
    It is possible tu use app cds with compose desktop ?
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    m
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  • s
    When using an undecorated window and 
    WindowDraggableArea
    , is it possible to get the Windows window management tools (see screenshot) when moving the app to the top of my screen?
    u
    a
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  • u
    Hi, how to compile my app for Mac Intel?
    a
    m
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  • c
    Hello, is there a way to make a desktop app behave like Jetbrains Toolbox. It's a floating window that can be opened or closed by clicking the tray icon or touch outside? And I also noticed its not a window. Am I wrong??
    s
    a
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  • u
    Was someone able to get AOT cache going for faster startup? (java 25)
    p
    a
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  • u
    Is there a way to make the semaphore padding same as is on the "modern" macos apps? (Foreground is Preferences app, background is my Compose desktop app)
    u
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  • u
    Soo even though this is java, skiko is not & I need to build it separately for macos, windows, linux, right? Is there an easy way of doing this, other than having/renting a dedicated machine available to build on? (Maybe the skiko bit is prebuilt somewhere and I only need to include it or something like that .. ?)
    e
    a
    +3
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  • u
    Hi, I need to add options to the context menu, how I do that?
    a
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  • n
    Hi, I am developing Compose Multiplatform app, btw, the Swing panel is very buggy on Linux, the issue here is the Swing Panel always-on-top the Compose View (Box, etc). Any plan or any version fixed it? (Mac and Windows fixed)
  • b
    I just notice if you put a 
    TooltipArea
    over a button it completely blocks the button and it becomes unusable. My searching showed a comment from 3 years ago where the only suggestion was to use a custom made alternative. Is the built in one still not really usable?
    a
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  • b
    Also, does the latest version of compose desktop require glibc 2.29? the previous version worked fine with 2.28. There's also this issue from 2 years ago about it with no responses: https://youtrack.jetbrains.com/issue/CMP-2279
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  • k
    Hi folks, does anyone have a recommendation for an accessible date / time / date time picker desktop lib?
    s
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  • s
    I feel that https://youtrack.jetbrains.com/issue/CMP-4126 was closed to soon as this is still an issue you can run into in production.
  • t
    something a bit quirky about the current drag and drop behaviour - if I drag an image from a browser into my app, I get something that claims to be a FilesList, but when I ask for the files, it gives me a URI to a something.url file in the temp dir, which if I read it, ultimately contains the actual URL I wanted. A bit odd, considering that FilesList is actually a URI list.
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  • j
    I've created dmg installer for a Compose for Desktop app but when I try to install/run the app I'm getting following. Anyone come across this?
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    java.lang.NoSuchMethodError: 'boolean androidx.compose.runtime.Composer.shouldExecute(boolean, int)'
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  • z
    how do i make a compose desktop (JVM) app only ever start 1 instance? is there a proper way of doing this?
    s
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  • s
    Is there any elegant way to force Compose to repaint a region of the ui? I’m the maintainer of MapLibre Compose, and I’m working on a bug on macOS where a ghost image of the map remains after its been removed from the composition, until that region of the Compose UI is redrawn (say, through a window resize). Detailed context: I use a SwingPanel composable to integrate an AWT Canvas into my UI, and attach a CAMetalLayer to that canvas using jawt. The map is rendered with Metal to that layer. When the canvas is removed from the UI (handle 
    removeNotify
    ), I remove the metal layer in obj-c++ like so:
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    CAMetalLayer* layer = (__bridge CAMetalLayer *)metalLayer.get();
[layer removeFromSuperlayer];
    But an image of the map remains in the Compose UI, at least until something else is rendered there, or a resize forces the app to repaint. I already tried: • before removing the layer, 
    [layer.superLayer needsDisplay]
    • in my canvas’s removeNotify: 
    parent.repaint()
    and 
    SwingUtilities.getWindowAncestor(this).repaint()
    and 
    SwingUtilities.getWindowAncestor(this).revalidate()
    --- Just before hitting send, I tried this hack:
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    // HACK: Force a repaint by resizing the window slightly to avoid a ghost map on macoOS.
val root = SwingUtilities.getWindowAncestor(this)
val oWidth = root.width
val oHeight = root.height
root.size = Dimension(oWidth + 1, oHeight + 1)
root.size = Dimension(oWidth, oHeight)
    And well, it works, but it feels wrong. Is there a better way?
    d
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  • m
    Hi everyone I’m using Compose Multiplatform Desktop and I’m building my app on an Apple Silicon Mac (M4). When I run the command:
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    ./gradlew packageDistributionForCurrentOS
    it successfully generates a 
    .deb
    package for amd64     under 
    /artifacts/build-mac/binaries/main/deb/dev-analyser_1.0.0-1_amd64.deb
    . But now I also want to create a build for Intel/ARM64 Mac — for example, an 
    .arm64.dmg
    package. Is it possible to generate an ARM64 
    .dmg
    file using Compose Multiplatform? Or is it only possible to build for the architecture of the current machine? Or any other way using ci/cd?
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  • m
    UI not updating after StateFlow emit while window is inactive (Compose Desktop)
    Screen Recording 2025-11-12 at 10.45.08 AM.mov
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  • j
    Hi, similar question. Can you preview commonMain Compose UI? The starter app comes with the tooling Preview Annotation but it does not render anything. I have to put it into a preview in the jvmMain with a different annotation to get it to work. Slack Conversation
  • b
    Has anyone found a way to set the background of the window of a compose-desktop app, so that it doesn't flicker during resizing that works on windows? The following has been mentioned in this slack a few times, but does not work on windows! (works fine on macOS, did not try linux)
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    window.background = java.awt.Color(....)
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  • u
    https://kotlinlang.org/docs/multiplatform/compose-compatibility-and-versioning.html It says here that Compose supports Windows ARM, how do I compile for Windows ARM?
    k
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  • n
    Hi everyone, I am developing a desktop app using CMP, btw when using package distribution, the native C dependency always missing, how can I package the app which contains all command line tool, native C, etc like yt-dlp, ffmpeg?
    m
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  • s
    This message was deleted.
    m
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  • u
    I've migrated my app to JBR 25, using Kotlin 2.3.0 beta2 for compatibility with JVM Toolchain 25. I've enabled Compact Object Headers, and while I haven't measured it, I'm definitely noticing a significant performance improvement! I'm really looking forward to the day when JEP 514 and 515 can be easily supported with the Compose plugin. Thanks, JetBrains!
    ❤️ 2
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    k
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  • b
    This page mentions 
    decodeToImageVector
    being added in 1.7.3, but I can't seem to find it (im using 1.8.2, and i do see ``decodeToImageBitmap``), do i need to add a specific library for it to become available? edit: the page: https://kotlinlang.org/docs/multiplatform/whats-new-compose-170.html#functions-for-converting-byte-arrays-into-imagebitmap-or-imagevector
    k
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  • b
    since I couldn't find 
    decodeToImageVector
    , I tried getting compose resource plugin to work, but for my setup the default 
    ResourceReader
    does not work. I thought I might be able to override it, since it's injected using 
    LocalResourceReader
    , but it looks like all those classes are marked 
    internal
    so I don't think I can do that. I'm not sure what options I have for getting this to work.
  • n
    Hi everyone, I am build a desktop app using JVM target, can I use Mac native library inside JVM ?
    k
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