java如何获取其他应用程序的窗口控件?

Question

比如现在有一个桌面应用。我现在要抓取这个桌面应用输入框或者其他控件的内容

Answer 1

通过windows API， FindWindow

 import com.sun.jna.Native;
import com.sun.jna.platform.win32.User32;
import com.sun.jna.platform.win32.WinDef.HWND;
import com.sun.jna.win32.StdCallLibrary;

public class SomeClass 
{
    public static interface User32 extends StdCallLibrary
    {
         final User32 instance = (User32) Native.loadLibrary ("user32", User32.class);
         HWND FindWindowExA(HWND hwndParent, HWND childAfter, String className, String windowName);
         HWND FindWindowA(String className, String windowName);
    }

    public static void main(String[] args)
    {
        HWND hwndShell = User32.instance.FindWindowExA(null, null, "Shell_TrayWnd", null);
        HWND hWnd = User32.instance.FindWindowExA(hwndShell, null, "Start", "Start");     
    }
}