console.java

java 调用windows的api

//******************************************************************
// Released under the DevelopMentor OpenSource Software License.
// Please consult the LICENSE file in the project root directory,
// or at http://www.develop.com for details before using this
// software.
//******************************************************************

package org.jawin.donated.win32;

import java.io.IOException;

import org.jawin.COMException;
import org.jawin.FuncPtr;
import org.jawin.ReturnFlags;
import org.jawin.io.LittleEndianOutputStream;
import org.jawin.io.NakedByteStream;
import org.jawin.marshal.GenericStub;
import org.jawin.marshal.StructConverter;

public class Console {

    static final int mtokenHandlerRoutine = 
                                        GenericStub.registerCustomString("1I:I:");
                
    public static boolean SetConsoleCtrlHandler(HandlerRoutine rt, boolean add) 
                        throws COMException, IOException
        {
        FuncPtr fp = new FuncPtr("KERNEL32.DLL", "SetConsoleCtrlHandler");
        NakedByteStream nbs = new NakedByteStream();
        LittleEndianOutputStream leos = new LittleEndianOutputStream(nbs);
        leos.writeInt(0); //offset of callback in obj array
        leos.writeInt(add ? 1 : 0);
        byte[] res = fp.invoke("T2." + mtokenHandlerRoutine + "I:I:", 
				8, nbs, new Object[] {rt}, ReturnFlags.CHECK_FALSE);
        return (StructConverter.bytesIntoInt(res, 0) != 0);
    }
}