We want to replace a custom NPAPI interface between a browser based web application and an client side daemon process. Is there a similar technology to Chrome's Native Client Messaging in Firefox?...

let textBytes = ctypes.uint8_t("hello"); let a = new SECItem; a.type = siBuffer; a.data = textBytes.address(); a.len = textBytes.length; I got ReferenceError: can't access lexical declaration te...

I am trying to build a Firefox extension, that needs to call native C code. My C program code is: #include<windows.h> int add(int a, int b) { return(a + b); } and my JavaScript code is ...

In summary: I searched MSDN and thought to create my own SetValue but I can't find any sourcecode for it. It's not in a DLL, its like InitPropVariantFromString, it's in a header file, but I can't f...

If I don't use WM_SETICON first to set the icon then WM_GETICON is always returning 0. This is weird. Please help. This is my code, can copy paste into scratchpad and run. When doing SendMessage(...

I'm making a Firefox addon with js-ctypes and was using user32.dll functions to set the icons of all windows of a profile. I plan to do this for Mac OS and Linux but trying to knock out Windows fi...

I'm working on a Firefox extension that receives binary images as ArrayBuffers of uint8_t. In my extension I load a .dll file that has a function that I need to use on that received image. The fun...