Hello Why does creating a blank new Compose Multiplatform pr kotlinlang #compose

Hello! Why does creating a blank new Compose Multiplatform project create 2 different modules for the JVM target. There is the desktop.jvmMain module and the common.desktopMain module, and I fail to understand what is the difference between those 2. In fact I think IntelliJ is as confused as I am because if you select "Compose Desktop Module" instead of "Console Application" in common > desktop when creating a new project, then the code from desktop.jvmMain does not even work (it does not compile .. but is never run anyway)

solidogen

12/17/2021, 11:42 AM

jvmMain includes JDK/java stuff, commonMain is intended to contain only pure kotlin this split let’s you add e.g. androidMain/jsMain and consume this common code from other platforms like web or mobile

you can also use multiplatform libraries in commonMain, so you are able to have logic like networking/caching that works in all the platforms, not just sharing some data classes

Benjamin Deroche

12/17/2021, 1:16 PM

The thing is it generated an

actual fun getPlatformName()

function in

desktop.jvmMain

, but it does not compile:

"Actual function 'getPlatformName' has no corresponding expected declaration"

If I delete this function, then when I run

./gradlew run

it run the main function from

common.desktopMain

and then when I close the window it run the main function from

desktop.jvmMain

I think I get the idea but this behavior totally confused me.

solidogen

12/17/2021, 1:18 PM

You should have

expect getPlatformName()

in commonJvm then

Benjamin Deroche

12/17/2021, 1:22 PM

Yes I have the

expect

in common.commonMain and its platform specific implementations using

actual

keyword in common.androidMain, common.desktopMain and desktop.jvmMain

That's how it was generated by the project template

I think I will generate a new project and see how it go, I haven't made much modifications to this one anyway

Colton Idle

12/17/2021, 3:09 PM

I'd ask in #compose-desktop maybe?

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