在 main 中使用包 lxn/win:

win.EnumChildWindows(hw, printme, 0)

然后在main之后:

func printme(HWND win.HANDLE, LPARAM uintptr) { //HWND hwnd, LPARAM lParam
    spew.Dump(HWND)
}

我明白了:

.\test.go:40: cannot use printme (type func(win.HANDLE, uintptr)) as type uintptr in argument to win.EnumChildWindows

error:exit status 2

我不明白错误信息。