The latest version of JNA has had some changes that should fix this (as one of the authors of JNA, Luke Quinane, states here). If you use the latest version and check the JNA API, you’ll see that the WinUser.WNDENUMPROC interface’s method actually uses WinDef.HWND as its parameter, not long or int. For example: import … Read more
I had exactly the same problem with loading a DLL, I solved it in this way: As Christian Kuetbach said, check if the simpleDLL you are using is compatible with your processor’s architecture, a 32-bit DLL won’t work on a 64-bit machine, and also a 64-bit DLL won’t work on a 32-bit machine. If the … Read more
JNA does not support mapping of c++ classes, so if you’re using c++ library you will need a jni wrapper If you need a lot of memory copying. For example, you call one method which returns you a large byte buffer, you change something in it, then you need to call another method which uses … Read more
Save yourself some pain and use JNA. You will need to download jna.jar and jna-platform.jar for the Win32 API. The pinvoke wiki and MSDN are useful for finding the right system calls. Anyway, here is the code to print the title and process of the currently active window. import static enumeration.EnumerateWindows.Kernel32.*; import static enumeration.EnumerateWindows.Psapi.*; import … Read more
Yep, here is the code… public class CWMouseHook { public final User32 USER32INST; public final Kernel32 KERNEL32INST; public CWMouseHook() { if(!Platform.isWindows()) { throw new UnsupportedOperationException(“Not supported on this platform.”); } USER32INST = User32.INSTANCE; KERNEL32INST = Kernel32.INSTANCE; mouseHook=hookTheMouse(); Native.setProtected(true); } public static LowLevelMouseProc mouseHook; public HHOOK hhk; public Thread thrd; public boolean threadFinish = true; public … Read more
What this question amounts to is asking how to call C++ instance methods using JNA, and it’s possible, but you’re going to have to do some work. In particular, you’ll need to write a wrapper which extern “C”s any functions you actually need to invoke. For any arbitrary type* function() definition you can map the … Read more
It appears you need to call GetMessage or PeekMessage, which is odd – it is not mentioned in the documentation for Hooks or LowLevelKeyboardProc. I don’t know enough about this part of the API to guess at the reason. I just used the example classes: import com.sun.jna.examples.win32.*; public class Callback { public static User32.HHOOK hHook; … Read more
To get the x and y position of “any other unrelated application” you’re going to have to query the OS and that means likely using either JNI, JNA or some other scripting utility such as AutoIt (if Windows). I recommend either JNA or the scripting utility since both are much easier to use than JNI … Read more