[英]How to pass a Go function as an argument to a C function?
I'm trying to pass a Go function to a C function. 我正在尝试将Go函数传递给C函数。
Something like: 就像是:
stm := C.struct_tray_menu{
....
fn: // definition of method
....
}
C.menu_cb(stm);
and pass that into a C function: 并将其传递给C函数:
static void menu_cb(struct tray_menu *item) {
(void)item;
printf("menu: clicked on %s\n", item->text);
}
I'd just like to know how to define something like C.function. 我只想知道如何定义类似C.function的东西。
the main problem is misunderstanding of definition of go in c. 主要问题是对c中go定义的误解。 so final code is look like 所以最终的代码看起来像
//export callOnMeGo
func callOnMeGo(in int) int {
fmt.Printf("Go.callOnMeGo(): called with arg = %d\n", in)
return in+ 1
}
func main() {
C.some_c_func((C.callback_fcn)(unsafe.Pointer(C.callOnMeGo_cgo)))
//dont forget to use (funcDefinedInGO_cgo) for with postfix _cgo
...
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