I want to redirect the stdout and stderr C streams to Java, but I am struggling to do so. I used the result of this thread: https://users.jna.dev.java.narkive.com/VdgNgCIb/jna-solutions-to-catch-stdout-stderr-of-dll but it still does not work as intended. Here is my C code (I compiled it as a TestPrintf.dll library): And my Java code: The interface for catching the stdout stream: The interface
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Tag: jna
Why does Kernel32 OpenProcess function return null?
I’m trying to make an application that reads the memory of another (non-Java & 32bit) application using JNA. So far I know how to find process ID and base address of modules. And right before …
Debugging COM interface mapping in JNA
After mapping Vss.h and several others headers to Java/JNA (see this question) I am trying to run some of the COM object methods and have a problem debugging them. I do not know if I am calling the …
Kotlin JNA getting declared field names to be empty list
The code below is highly inspired by this answer and this answer, and I am trying to get it work with Kotlin language, rather than Java that was given in the answer there. It is basically based on …
Java JNA – Base Address Finding
I am currently attempting to read/write to memory through the use of JNA for Java. For the past week I have tried a multitude of solutions, mostly from similar projects I have found online, but …
JNA calling CoInitialize when loading a dll
I’ve got a dll written in Pascal. I’ve determined that I need to run CoInitialize in the Java code, but I just can’t figure out how. I found another Stack Overflow thread which should have helped …
GetWindowTextA, GetWindowText returns empty value on Edit Control
I’m trying to list and get the content of Edit Controls from an external Window in C++ / Java, unfortunately with no success. When I call GetWindowText or GetWindowTextA it returns an empty value on …
Gibberish at the end of a String byte array passed to native code
I am writing an applet to wrap a proprietary .dll that can be used in the browser. To achieve this, I am using JNA. The .dll connects to a check scanner peripheral, and can pull images from the devices memory. I have to make a Windows API call in Java, using JNA, to get the image: When the code saves
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