jna

I'm writing Java 6 application and I have to check if a file is readable. However, on Windows canRead() always returns true . So I see that probably, the only solution could be some native solution based on WINAPI and written in JNA/JNI. But, there is another problem, because it's difficult to find a simple function in WINAPI which would return information about access to a file. I found GetNamedSecurityInfo or GetSecurityInfo but I'm not an advanced WINAPI programmer and they are too complicated for me in connection with JNA/JNI. Any ideas how to deal with this problem? Roman C Try to use the

最近一个JSP项目需要用到分词模块，而分词模块实用C++写成的DLL库。于是上网搜各种方法，最后选择了JNA作为JSP调用DLL的工具。 JNA（Java Native Access ）提供一组Java工具类用于在运行期动态访问系统本地库（native library：如Window的dll）而不需要编写任何Native/JNI代码。开发人员只要在一个java接口中描述目标native library的函数与结构，JNA将自动实现Java接口到native function的映射。 JNA的使用方法有很多，这里只总结下我遇到的问题： DLL放置的路径问题 JSP本身分为bean的src目录和WebRoot的脚本目录，而我们的DLL需要在src下的类中调用，于是遇到了将DLL和资源文件放置到什么地方的问题。 最后解决方法： 将调用的DLL和LIB文件拷贝到C:/Windows/System32目录下 可以访问。 解决过程：我试过将这些文件放到Src目录下，然后用Class.class.getResource("/").getPath()这种方法得到类的class路径，再得到资源文件的路径，结果没有成功。 DLL调用资源的路径问题 DLL可能会调用其他资源文件，比如我这里需要用到词典，路径也是个问题，不过这个较为简单，很容易解决： 将资源文件目录， 拷贝到Src目录下面

Window get locked when we press WIN_HOME+L key together. We can find lot good example to listen to window lock event in VB. But I am doing window lock listener for Java. I've done some research and made a listener program that listen to window lock event. It has two interface and one main program with JFrame and uses JNA library. WindowUser32.java public interface WindowUser32 extends User32 { public static final WindowUser32 MYINSTANCE = (WindowUser32) Native.loadLibrary("user32", WindowUser32.class, W32APIOptions.UNICODE_OPTIONS); public int SetWindowLong(WinDef.HWND hWnd, int nIndex,

This is native method from ITLSSPProc.dll NOMANGLE int CCONV OpenSSPComPort (SSP_COMMAND * cmd); Here, SSP_COMMAND is structure in ITLSSPProc.dll which is in C++ Language. struct SSP_COMMAND { unsigned long BaudRate; unsigned char PortNumber; }; So, I have to access OpenSSPComPort (SSP_COMMAND * cmd) in java using JNI. Here is a code i have written, public class Main { public interface ITLSSPProc extends Library { ITLSSPProc INSTANCE = (ITLSSPProc) Native.loadLibrary( (Platform.isWindows() ? "ITLSSPProc" : "simpleDLLWindowsPort"), ITLSSPProc.class); int OpenSSPComPort(Pointer param); int

I`m developing human resources software. I need to check attendence of employees. We have ZKSoftware F702-s fingerprint device. And I need get information from it in java project. I searched for sdk and documentation how to use this sdk but I did not find anything. Help me whith my project. What can I do? I found dynamic libraries of my fingerprint device which activex component and I resolved my problem with JACOB is a JAVA-COM Bridge that allows you to call COM Automation components from Java. I call functions and handle events from library with Jacob. Here is link to JACOB - Java COM Bridge

Looking to get back into the development space; primarily using Java to call some native win32 functions (I don't desire to build in .NET).... Can someone point me to a place where I can read the title from a differnt running window using Java (JNI/JNA/SWIG). Assume you would know where in the memory space the application you are attempting to hook into is. In JNA: public interface User32 extends StdCallLibrary { User32 INSTANCE = (User32) Native.loadLibrary("user32", User32.class); int GetWindowTextA(PointerType hWnd, byte[] lpString, int nMaxCount); } To use it: byte[] windowText = new byte

I am using the below code to read through the Windows Application Event Log using JNA. I want to be able to specify which event to start at instead of always starting with the first event. Does anyone have any suggestions? import java.io.IOException; import com.sun.jna.*; import com.sun.jna.platform.win32.*; import com.sun.jna.platform.win32.WinNT.*; import com.sun.jna.ptr.IntByReference; public class test { public static void main(String[] args) throws NumberFormatException, IOException { HANDLE h = Advapi32.INSTANCE.OpenEventLog("ServerName", "Application"); IntByReference pnBytesRead = new

I asked a similar question on a previous thread ( https://stackoverflow.com/questions/5206633/java-find-out-what-application-window-is-in-focus) but I was guided to use JNI, and I'm not having much success with it... I've read some tutorials and while some work fine, others don't I still can't get the information I need, which is the title of the window on the foreground. Now I'm looking into JNA but I can't figure out how to access GetForegroundWindow() ... I think I can print the text once I get the handle to the window using this code (found on another thread): import com.sun.jna.*; import