I am not able to use `MaterialTheme.colors.onSurface` in a Composable. Cursor hover tells me `org.je...

# compose

[Sudhir Singh Khanger]

I am not able to use MaterialTheme.colors.onSurface in a Composable. Cursor hover tells me
org.jetbrains.kotlin.diagnostics.SimpleDiagnostic@9406416a (error: could not render message) whereas the build window tells me @Composable invocations can only happen from the context of a @Composable function But I am using it inside a Composable function.

[Filip Wiesner]

It must be directly inside @Composable function. My guess is that you are using it inside remember {} but I can't help you without seeing your code.

[Sudhir Singh Khanger]

@Composable
fun Test() {
    MyTheme {
        Column {
            Canvas(modifier = Modifier.fillMaxSize()) {
                drawCircle(
                    color = MaterialTheme.colors.onSurface,
                    radius = 10f
                )
            }
        }
    }
}

[tad]

Technically that's in a DrawScope.() closure. You need to set a variable before the call to Canvas to use it in the closure.

[Sudhir Singh Khanger]

Thanks. That worked.