Use this tag for questions about Dart's Foreign Function Interface (FFI) - the ability to call C directly from Dart. It is equally applicable to applications running in the Dart VM and to Flutter applications (except Flutter Web, of course).
Questions tagged [dart-ffi]
109 questions
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How does one pass argv[] to a c function in dart?
I want to call a c function test_main(int argc, char *argv[]) from dart using dart FFI. But the code below doesn't work obviously because Dart string cannot have null characters in it. How does one compose argv in dart?
// FFI signature of the C…
Vikram Kapoor
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How to use OpenCV with dart:ffi on iOS
I am developing a flutter plugin that uses OpenCV as a dependency to do some image processing. I created a bridge and initilized lookup function as mentioned in here. The basic sum function works, however as soon as I add
s.dependency "OpenCV2"
on…
Aawaz Gyawali
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Run a sync function async in Dart
I'm using the new Dart FFI with a Rust library, but the call to the library blocks, but my flutter app should run while the call is executing.
So I need to convert an sync function to an async function.
I already tried isolates and I think that…
Jan-luca Döen
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1 answer
Could not find a package configuration file provided by "openssl"
I'm trying to use OpenSSL with Flutter using dart:ffi, but when i run the project on Ubuntu 20.04 the error message as below comes out. I tested the project on Windows 10 and it worked.
Project…
Cadu Gomes
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