go 编写DLL

1package mian
2
3import "C"
4
5//export Min
6func Min(a,b) int32{
7   if a>b{
8     return int32(b)
9  } 
10      return int32(a)
11}

　　编译命令

      go build -ldflags "-s -w" -buildmode=c-shared -o net.dll main.go

1package main
2
3/*
4#include <stdio.h>
5#include <stdlib.h>
6*/
7import "C"
8
9import (
10	"unsafe"
11)
12
13func main() {
14	for i := 1; i < 999; i++ {
15		cstr := C.CString("Hello, world")
16
17		C.free(unsafe.Pointer(cstr))//释放内存 必须引入stdlib.h 标准库
18	}
19
20}
21
22//返回文本//export Tostring
23func Tostring(a *C.char) *int32{
24	text := C.GoString(a)
25	cstr := C.CString(text)
26	//C.free(unsafe.Pointer(cstr))
27	return (*int32)(unsafe.Pointer(cstr))
28}
29
30//export Getslice//传输字节集
31func Getslice(CC **C.char,)int{
32   aa:="fdfdfsfdsfdsfdsfdsfsd"
33   zz:=[]byte(aa)
34   *CC=(*C.char)(unsafe.Pointer(C.CBytes(zz)))
35   return len(zz)
36}