JAVA调用JNA修改桌面壁纸 |
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JAVA调用JNA修改桌面壁纸
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一时兴起想用java定时修改桌面，折腾一番，终于成功。 其实无非是java调用jna，实现对dll的调用，控制修改了桌面，纯属娱乐，不喜勿喷。 代码在此： import java.util.Timer; import java.util.TimerTask; import com.sun.jna.Native; import com.sun.jna.platform.win32.Advapi32Util; import com.sun.jna.platform.win32.WinReg; import com.sun.jna.win32.StdCallLibrary; public class EditDesktop { public static void main(String[] args) { final Timer timer = new Timer(); TimerTask task = new TimerTask() { private int count=0; private int tot=0; String img="E:/AAAprojectDoc/img/"; @Override public void run() { this.count++; this.tot++; img="E:/AAAprojectDoc/img/"+count+".jpg"; change(img); if (count ==11)count = 0; if(tot==12){ System.out.println("定时器停止了,img="+img); timer.cancel();// 停止定时器 } } }; timer.schedule(task, 0, 3000);// 1秒一次 } private interface MyUser32 extends StdCallLibrary { MyUser32 INSTANCE = (MyUser32) Native.loadLibrary("user32", MyUser32.class); boolean SystemParametersInfoA(int uiAction, int uiParam, String fnm, int fWinIni); } public static void change(String img){ Advapi32Util.registrySetStringValue(WinReg.HKEY_CURRENT_USER, "Control Panel\\Desktop", "Wallpaper", img); //WallpaperStyle = 10 (Fill), 6 (Fit), 2 (Stretch), 0 (Tile), 0 (Center) //For windows XP, change to 0 Advapi32Util.registrySetStringValue(WinReg.HKEY_CURRENT_USER, "Control Panel\\Desktop", "WallpaperStyle", "10"); //fill Advapi32Util.registrySetStringValue(WinReg.HKEY_CURRENT_USER, "Control Panel\\Desktop", "TileWallpaper", "0"); // no tiling // refresh the desktop using User32.SystemParametersInfo(), so avoiding an OS reboot int SPI_SETDESKWALLPAPER = 0x14; int SPIF_UPDATEINIFILE = 0x01; int SPIF_SENDWININICHANGE = 0x02; // User32.System boolean result = MyUser32.INSTANCE.SystemParametersInfoA(SPI_SETDESKWALLPAPER, 0, img, SPIF_UPDATEINIFILE | SPIF_SENDWININICHANGE ); } }下了3个jart包，4.2.1版成功可用。 所需jar包下载：http://so.csdn.net/so/search/s.do?q=JNA&t=doc 参考资料：用Java更换Windows桌面壁纸http://xpenxpen.iteye.com/blog/2178860 |
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