loadlibrary

问题 Is there a platform-independent Java statement to load a native library from a different directory than the Java source code is in? I would like to use something like this: public class HelloWorld { static { System.loadLibrary("../some_project/HelloWorld"); } public static native void print(); } The problem is that System.loadLibrary() doesn't support directory separators in the pathname argument. Also, System.load() unfortunately requires an absolute pathname, which not only means I can't

问题 I am using windows 7 64 bit machine. I installed Visual studio 2010 and developed a simple win32 dll to add 2 numbers.. The dll is created and i used a test application to test the dll and it works fine.. Now i write python script(shown below) to use this library. But i get the following error message. Traceback (most recent call last): File "C:\Users\sbritto\Documents\Visual Studio 2008\Projects\MathFuncsDll\Debug\MathFuncs.py", line 5, in <module> lib = ctypes.WinDLL('MathFuncsDll.dll',use

问题 I have java program Client.class that uses cpp shared library libclient.so via JNI. libclient.so is built as shared and uses cpp shared library libhttp.so. libclient.so and libhttp.so are placed in folder /home/client/lib64 Client.class is placed in /home/client/bin Client can load library with System.load and environment variable LD_LIBRARY_PATH System.loadLibrary and -Djava.library.path The first way works fine. export LD_LIBRARY_PATH = /home/client/lib64 java -classpath ./bin Client The

问题 I have a project that I converted from Visual Studio 2003 .NET to Visual Studio 2010. It's NOT a .NET project; it's Visual C++ (unmanaged). The DLL pulls in additional DLLs. If I link an executable with this DLL, then the executable dies during the initialization of the DLL. (I can tell, there are constructors for static objects that are being called, and I can see their operation.) I've removed ALL VS 2010-created DLLs from my path, except for one of them, which causes the error. Replacing

问题 I'm currently working on project for the .NET Compact Framework which uses DotNetZip for reading ZIP-files. The project is split into two parts. One platform-independent library which should be available for both, a CF project and a desktop project. This common library contains the code for extracting ZIP-files. The problem is that there are two different DLLs of the DotNetZip library, one for .NET CF and one for the .NET Desktop Framework. It's not possible to use the CF version of the

问题 I am absolutely new at calling functions from DLLs (call it bad programming habits, but I never needed to). I have this C++ dll (CidGen32.dll at https://skydrive.live.com/redir?resid=4FA1892BF2106B62!1066) that is supposed to export a function with the following signature: extern "C" __declspec(dllexport) int GetCid(const char* pid, char* cid); What it should do is to get a 13 char string such as '1111111111118' and return a 20 char hash. I have tried for the last couple of days to call this

问题 Two Delphi programs need to load foo.dll, which contains some code that injects a client-auth certificate into a SOAP request. foo.dll resides in c:\fooapp\foo.dll and is normally loaded by c:\fooapp\foo.exe. That works fine. The other program needs the same functionality, but it resides in c:\program files\unwantedstepchild\sadapp.exe. Both aps load the DLL with this code: FOOLib := LoadLibrary('foo.dll'); ... If FOOLib <> 0 then begin FOOProc := GetProcAddress(FOOLib , 'xInjectCert');

问题 I've just found out by accident that doing this GetModuleHandle("ntdll.dll") works without a previous call to LoadLibrary("ntdll.dll") . This means ntdll.dll is already loaded in my process. Is it safe to assume that ntdll.dll will always be loaded on Win32 applications, so that a call to LoadLibrary is not necessary? 回答1: From MSDN on LoadLibrary() (emphasis mine): The system maintains a per-process reference count on all loaded modules. Calling LoadLibrary increments the reference count.

问题 The DLL lookup path, as described in MSDN is: The directory where the executable module for the current process is located. The current directory. The Windows system directory. The GetSystemDirectory function retrieves the path of this directory. The Windows directory. The GetWindowsDirectory function retrieves the path of this directory. The directories listed in the PATH environment variable. Which brings up the following doubt: Suppose I have an executable in some directory, say: c:

问题 I am writing a JNI program and I want to unload the dll after i hava finished using it. What can I do for this purpose? I couldn't find a unloadLibrary() method in the Javadoc. 回答1: There is no direct way of manually unloading your dll. Put simply, your dll will be unloaded when the ClassLoader of the Class that loaded your jni-dll is handled by the garbage collector. 回答2: JVM will manage unloading library so don't bother yourself :) 回答3: Try: FreeLibrary(sdl_library); 来源： https:/