解决方法
示例(
from Wikipedia):
import com.sun.jna.win32.StdCallLibrary; import com.sun.jna.Native; /** Simple example of Windows native library declaration and usage. */ public class BeepExample { public interface Kernel32 extends StdCallLibrary { // FREQUENCY is expressed in hertz and ranges from 37 to 32767 // DURATION is expressed in milliseconds public boolean Beep(int FREQUENCY,int DURATION); public void Sleep(int DURATION); } public static void main(String[] args) { Kernel32 lib = (Kernel32) Native.loadLibrary("kernel32",Kernel32.class); lib.Beep(698,500); lib.Sleep(500); lib.Beep(698,500); } }
在这种情况下,我们从“kernel32.dll”库中加载它.
我希望这样可以使JNA更加清晰.
编辑:我会解释一下代码:您需要使用库中需要的函数定义一个接口(扩展com.sun.jna.Library).然后,调用com.sun.jna.Native.loadLibrary(“LibraryName”,InterfaceName.class).最后,将输出存储在具有接口类型的变量中.只需调用该变量的函数.