Dear all, I'm constructing a rudimentary webview library for Pharo with UFFI (available here [https://github.com/eftomi/Pharo-Webview](https://github.com/eftomi/Pharo-Webview "https://github.com/eftomi/Pharo-Webview")). For now, the basic things work under Windows. Iâm using âa tiny cross-platform webview libraryâ available at [https://github.com/webview/webview](https://github.com/webview/webview "https://github.com/webview/webview"). One of the functions in the dll allows to register a C function to act as a callback and that can be used as a function in javascript, which is convenient for webview presenter - main program communication. This function has the signature: ``` extern void webview_bind(webview_t w, const char *name, void (*fn)(const char *seq, const char *req, void *arg), void *arg); ``` fn is the callback function. Is there any way to make a ffiCall description of this kind of signature, where fn would be an address of the callback in Pharo? Thanks and best wishes,\ Tomaz