java - 为什么我的代码不能使用 Java JNA 将“@”和“~”等字符发送到另一个窗口？

Question

我正在创建一个软件来存储密码，以便可以将它们发送到令牌的登录窗口。问题是像“@”和“~”这样的一些字符没有被发送。

为了向您展示问题，我已将目标窗口从令牌的登录窗口更改为记事本编辑器的窗口。如果有人想运行下面的代码，将会看到“x”字符被发送到记事本，但“@”不是。

import java.util.HashMap;
import java.util.Map;

import com.sun.jna.platform.win32.WinUser.WNDENUMPROC;
import com.sun.jna.Pointer;
import com.sun.jna.Native;
import com.sun.jna.platform.win32.BaseTSD;
import com.sun.jna.platform.win32.User32;
import com.sun.jna.platform.win32.WinDef;
import com.sun.jna.platform.win32.WinDef.HWND;
import com.sun.jna.platform.win32.WinUser;

public class Main {

    public static final int MAX_TITLE_LENGTH = 1024;

    public static void main(String[] args) {
        Map<HWND, String> windows = getWindows();
        for (Map.Entry<HWND,String> window : windows.entrySet()) {
            if (window.getValue().contains("Notepad")) {
                User32.INSTANCE.SetForegroundWindow( window.getKey() );
                try {
                    Thread.sleep(500);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }

                // Prepare input reference
                WinUser.INPUT input = new WinUser.INPUT(  );
                input.type = new WinDef.DWORD( WinUser.INPUT.INPUT_KEYBOARD );
                input.input.setType("ki"); // Because setting INPUT_INPUT_KEYBOARD is not enough: https://groups.google.com/d/msg/jna-users/NDBGwC1VZbU/cjYCQ1CjBwAJ
                input.input.ki.wScan = new WinDef.WORD( 0 );
                input.input.ki.time = new WinDef.DWORD( 0 );
                input.input.ki.dwExtraInfo = new BaseTSD.ULONG_PTR( 0 );

                // Press "@" (keydown)
                input.input.ki.wVk = new WinDef.WORD( '@' ); // 0x41
                input.input.ki.dwFlags = new WinDef.DWORD( 0 );  // keydown
                User32.INSTANCE.SendInput( 
                    new WinDef.DWORD( 1 ), 
                    ( WinUser.INPUT[] ) input.toArray( 1 ), 
                    input.size() 
                );

                // Release "@"
                input.input.ki.wVk = new WinDef.WORD( '@' ); // 0x41
                input.input.ki.dwFlags = new WinDef.DWORD( 2 );  // keyup

                User32.INSTANCE.SendInput( 
                    new WinDef.DWORD( 1 ),
                    ( WinUser.INPUT[] ) input.toArray( 1 ),
                    input.size() 
                );

                // Press "x"
                input.input.ki.wVk = new WinDef.WORD( 'X' ); // 0x41
                input.input.ki.dwFlags = new WinDef.DWORD( 0 );  // keydown

                User32.INSTANCE.SendInput( 
                    new WinDef.DWORD( 1 ), 
                    ( WinUser.INPUT[] ) input.toArray( 1 ),
                    input.size() 
                );

                // Release "x"
                input.input.ki.wVk = new WinDef.WORD( 'X' ); // 0x41
                input.input.ki.dwFlags = new WinDef.DWORD( 2 );  // keyup

                User32.INSTANCE.SendInput( 
                    new WinDef.DWORD( 1 ), 
                    ( WinUser.INPUT[] ) input.toArray( 1 ), 
                    input.size() 
                );

           }
        } 
    }               

    public static Map<HWND, String> getWindows() {
        final Map<HWND, String> map = new HashMap<HWND, String>();
        User32.INSTANCE.EnumWindows(
            new WNDENUMPROC() {
                @Override
                public boolean callback(HWND hWnd, Pointer arg1) {
                    String wText = getWindowTitle(hWnd);
                    map.put(hWnd, wText);
                    return true;
                }
            },
            null
        );
        return map;
    }

    /**
     * @param hWnd
     * @return Title of a given process HWND.
     */
    public static String getWindowTitle(HWND hWnd) {
        char[] buffer = new char[MAX_TITLE_LENGTH * 2];
        User32.INSTANCE.GetWindowText(hWnd, buffer, MAX_TITLE_LENGTH);
        return Native.toString(buffer);
    }
}

该程序只是不将“@”字符发送到记事本，但另一方面将“x”字符发送给它。我应该怎么做才能发送“@”字符？

标签： javawindowsjnasendinput