Java library with some Win32 system calls

Package content

This is a Java package that contains some Windows system calls used in the Arduino IDE, we used JNI to not depend on JNA library.

How to build

The header is generated with javah tool, the command to run from the root folder is:

"$JAVA_HOME/bin/javah.exe" -cp src cc.arduino.os.windows.Win32Syscalls

this command produce a file named: cc_arduino_os_windows_Win32Syscalls.h

To build the DLL, in theory, we can use any C/C++ compiler, BTW our tests with Cygwin revealed that the required API:

#include <windows.h>
#include <VersionHelpers.h>
#include <ShellScalingAPI.h>
#include <Shlobj.h>

are not all available, so I opted to use Visual Studio 2017 Community, the procedure is:

1. Create a new Empty Project
2. On the "Solution Explorer" right-click on the "Header files" folder: -> "Add" -> "Existing item" and select cc_arduino_os_windows_Win32Syscalls.h
3. Do the same for "Source files" folder: -> "Add" -> "Existing item" and select cc_arduino_os_windows_Win32Syscalls.c
4. Open Project Properties: -> "General" -> "Configuration Type" -> Select "Dynamic Library (.dll)"
5. Project Properties: "C/C++" -> "All Options" -> "Additional Include Directories" -> add your JDK include and include\win32 folder path. For example: C:\Program Files (x86)\Java\jdk1.8.0_131\include;C:\Program Files (x86)\Java\jdk1.8.0_131\include\win32
6. Project Properites: "Linker" -> "Input" -> "Additional Dependencies" -> add to the existing line the file "Shcore.lib".
7. You should be good to go now, so launch the build from the menu: "Build" -> "Build Solution".