On Saturday, 11 May 2013 at 17:34:53 UTC, gedaiu wrote:
yeah... what a shameful mistake.. i vave a new tricky
question... how i can provide a class method instead a simple
function as callback?
with D code use delegates as Ali commented, it's simple. with C
code use static method and pass instance pointer as callback
target, something like this
---------------
// C function
alias extern(C) function(void*) callbackfunc;
extern(C) setCallback(callbackfunc cb, void* userptr);
class Handler {
static extern(C) callback(void* instance) {
if ( auto self = cast(Handler) instance )
self.onCallback();
}
void onCallback() {
// ...
// your code here
// ...
}
}
void setCAPI_callback(Handler hnd) {
setCallback(Handler.callback, hnd); // don't remember if needed
to cast hnd to void
}
however this would require C API which has userptr argument in
callbacks(hopefully most libs i've seen has this)
