Go语言调用Windows动态库的两种方法

Go语言调用动态库需要注意动态库的版本，比如调用32位的动态库必须使用32位的go，否则会报下面的错误(xxx.dll是动态库的名称)：

panic: Failed to load xxx.dll: %1 is not a valid Win32 application.

1. 使用syscall的NewLazyDLL和NewProc(效果如下)

2.使用syscall的LoadLibrary和GetProcAddress(效果如下)

3详细代码如下(zip.dll是一个提供压缩解压缩功能的第三方动态库，kernel32.dll是Windows的系统库)：

packagemain

import ( 

 "fmt" 

 "syscall" 

) 

func main() { 

 CompressFile() 

 fmt.Println("\n") 

 GetWindowVersion() 

} 

func CompressFile() { 

 Compress := syscall.NewLazyDLL("zip.dll") 

 Comp := Compress.NewProc("CompressFile") 

 ret, _, err := Comp.Call() 

 if ret != 1 { 

 fmt.Println("Compress result:压缩失败", err) 

 return 

 } 

 fmt.Println("Compress result:压缩成功") 

} 

func GetWindowVersion() { 

  kernel , err := syscall.LoadLibrary("kernel32.dll") 

 if err !=  nil  { 

 abort("LoadLibrary", err) 

 } 

 defer syscall.FreeLibrary(kernel) 

 proc, err := syscall.GetProcAddress(kernel, "GetVersion") 

 if err != nil { 

 abort("GetProcAddress", err) 

 } 

 ret, _, _ := syscall.Syscall(uintptr(proc), 0, 0, 0, 0) 

 print_version(uint32(ret)) 

} 

func abort(funcname string, err error) { 

 panic(funcname + " failed: " + err.Error()) 

} 

func print_version(v uint32) { 

 major := byte(v) 

 minor := uint8(v >> 8) 

 build := uint16(v >> 16) 

 print("windows version ", major, ".", minor, " (Build ", build, ")\n") 

} 

 

标签: dll go 动态

打赏 点赞(1)

文章来源：智云一二三科技

文章标题：Go语言调用Windows动态库的两种方法

文章地址：https://www.zhihuclub.com/88944.shtml