JWS client application with remote mysql security

I'm fairly new to this sphere of web security programming. I'm trying to write JWS client application that can communicate with webhosting's mysql server. Is there a better way to secure the data communication between the two since webhosting's mysql server is not SSL enabled? I'll appreciate any tools, advices or techniques to accomplish this.

zhadum wrote:
I'm aware of that I'll have to encrypt password and user's private information. Since the JWS client will need to decrypt the password and user info the decryption key will need to be stored in the application. Once again, easy to extract.
I have been researching and thought of using JSSE to establish secure connection between client application and Java Servlet on the server for database communication without the direction connection to the database. That is the way is is normally done. You only provide the database functionality needed by the client and you make the client log on to the Web Server before allowing access to the servlet.
I know hackers can or could decompile my client application and learn how to access the database directly so I thought of using the Servlet will make the hacker's tasks more difficult.Yep. That and the use of HTTPS.
>
Is there a sample code I can use with my client and servlet for secured database communications?There are tons of examples of creating a logon page which is the first thing you will need. The user of servlets for database access is exactly the same as you have used for your JWS client.

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[ code ]
Exception in thread "main" java.lang.NullPointerException
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try {
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//endoffilePlease advise as this is very urgent

Hi
the following is the code for PostOfficeImpl...its a long code but i include it so that I get your help please...
import java.io.*;
import java.net.*;
import java.lang.*;
import java.rmi.*;
import java.rmi.server.*;
import java.rmi.RemoteException;
import java.util.HashMap;
import java.util.*;
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public PostOfficeImpl() throws java.rmi.RemoteException {
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public static oListImpl ovarList = new oListImpl();
public static iListImpl ivarList =new iListImpl();
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public static oList opchannel, ofirst, onext;
public static iList ipchannel, ichan, ifirst;
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public static String[] inoutChan, inChan, outChan,inVAR, invarLIST,outVAR, outvarLIST ;
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DriverMatrix_mthds drive = new DriverMatrix_mthds();
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private static Boolean tAll_Vacant;
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public Boolean getAll_Vacant() throws RemoteException{
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ifirst = null;
ofirst=null;
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          if(lookupvar[i][j] != null){
          if(lookupvar[i][j].equals(vnum)){
          dtype = lookupvar[i][2];
     catch (Exception d){}
     dataPacket retpac = new dataPacket(nnum, vnum, dtype, dval);
     System.out.println("msg sent "+ nnum +"     " + vnum+" "+ dtype+"     "+ dval);
     return retpac;
public String findnodeName(String nodeNum)
     throws RemoteException{
String nnum = nodeNum;
llfirst = list.getFirst();
while (llfirst != null){
     if((llfirst.nodeNum).equals(nnum)){
     return llfirst.nodeName;
     llfirst = llfirst.next;
     System.out.println("node Number does not match with the list of node numbers generated..try again");
     return null;
//find the nodenum given the node name
public String findnodenum(String nodename)
     throws RemoteException{
     String nodenumber ="";
     String nodname = nodename;
     try{DriverMatrix_mthds driver = new DriverMatrix_mthds();
     driver.VarTypeArray();
     driver.Variablelist();
     driver.NodeOrigin();
     driver.nodeInput();
     driver.numOfnodes();
     driver.noOfVariables();
     driver.novarType()     ;
     driver.varNameType();
     String[][] lookupnode = driver.nodeNumName();
     int i, j;
     for(i=0; i<=lookupnode.length-1; i++){
     for(j=0; j<=2; j++){
          if(lookupnode[i][j] != null){
          if(lookupnode[i][j].equals(nodname)){
               nodenumber = lookupnode[i][2];
     catch (Exception d){}
     return nodenumber;
public String findvarnum(String variablename)
     throws RemoteException{
     String varnumber = "";
     try{
     DriverMatrix_mthds driver = new DriverMatrix_mthds();
     driver.VarTypeArray();
     driver.Variablelist();
     driver.NodeOrigin();
     driver.nodeInput();
     driver.numOfnodes();
     driver.noOfVariables();
     driver.novarType()     ;
     String[][] lookupvar = driver.varNameType();
     int i, j;
     String varname = variablename;
     for(i=0; i<=lookupvar.length-1; i++){
     for(j=0; j<=2; j++){
          if(lookupvar[i][j] != null){
          if(lookupvar[i][j].equals(varname)){
               varnumber = lookupvar[i][0];
catch (Exception d){}
return varnumber;
public String findvartype(String varname)
     throws RemoteException{
     String vartype = "";
     try{
     DriverMatrix_mthds driver = new DriverMatrix_mthds();
     driver.VarTypeArray();
     driver.Variablelist();
     driver.NodeOrigin();
     driver.nodeInput();
     driver.numOfnodes();
     driver.noOfVariables();
     driver.novarType();
     String[][] lookupvar = driver.varNameType();
     int i, j;
     String varName = varname;
     for(i=0; i<=lookupvar.length-1; i++){
     for(j=0; j<=2; j++){
          if(lookupvar[i][j] != null){
          if(lookupvar[i][j].equals(varName)){
               vartype = lookupvar[i][2];
catch (Exception d){}
return vartype;
public String findtypenum(String vartype){
String varnum = "";int i;
try{
     DriverMatrix_mthds driver = new DriverMatrix_mthds();
     driver.VarTypeArray();
     driver.Variablelist();
     driver.NodeOrigin();
     driver.nodeInput();
     driver.numOfnodes();
     driver.noOfVariables();
     String varNum[][] =      driver.novarType()     ;
     String varType = vartype;
     for(i=0; i<=9-1; i++){
          if(varNum[i][0] != null){
          if(varNum[i][0].equals(varType)){
               varnum = varNum[i][1];
catch (Exception d){}
return vartype;
//return input variable list
public String[] inoutchanlist(String nodenum, String nodenam)
     throws RemoteException{
try{
     DriverMatrix_mthds drive = new DriverMatrix_mthds();
     String[] varLIST = drive.Variablelist();
     int i=0;int j;
     while(varLIST[i]!=null){
          i=i+1;
     int arrlength = i;
     inoutChan = new String[arrlength];
     i=0; j=0;
     WHILELOOP:
     while(!(varLIST[i].equals("end of file"))){
     while(varLIST[i].equals(nodenum)){
          i=i+1;
          while(varLIST[i].equals(nodenam)){
               i=i+1;
               while(!(varLIST[i].equals("end of input variable"))){
                    inoutChan[j] = varLIST[i];
                    i=i+1;
                    j=j+1;
          System.out.println("endofinput");
          inoutChan[j]="endofinchan";
          j=j+1;
          i=i+1;
          while(!(varLIST[i].equals("end of output variable"))){
     inoutChan[j] = varLIST[i];
     i=i+1;
     j=j+1;
     System.out.println("endofoutput");
     inoutChan[j]="endofoutchan";
     break WHILELOOP;
     i=i+1;
     arrlength =j;
     for(j=0; j<=arrlength-1; j++){
     System.out.println(inoutChan[j]);
     catch (Exception e){}
     return inoutChan;
public String[] inchannel(String[] inoutChan) throws RemoteException{
int count=0;int i=0, j=0;
System.out.println("entered");
while(inoutChan[count]!=null){
     System.out.println(count + " " +inoutChan[count]);
     count=count+1;
     inChan = new String[count];
     while(!(inoutChan[i].equals("endofinchan"))){
     inChan[j] =inoutChan[i];
     j=j+1; i=i+1;
return inChan;
public String[] outchannel(String[] inoutChan) throws RemoteException{
int count=0;int i=0, j=0;
System.out.println("entered");
while(inoutChan[count]!=null){
     System.out.println(count + " " +inoutChan[count]);
     count=count+1;
     outChan = new String[count+1];
     while(!(inoutChan[i].equals("endofinchan"))){
          i=i+1;
     i=i+1;
     while(!(inoutChan[i].equals("endofoutchan"))){
          outChan[j] =inoutChan[i];
          j=j+1; i=i+1;
     return outChan;
public String[] invarChan(String nodename, int guardno)throws RemoteException{
try{
DriverMatrix_mthds drive = new DriverMatrix_mthds();
invarLIST = drive.invarlist();
int i=0;int j;
while(invarLIST[i]!=null){
     i=i+1;
     int arrlength = i;
     inVAR = new String[arrlength];
     i=0; j=0;
          WHILELOOP: while(!(invarLIST[i].equals("end of file"))){
               if (invarLIST[i].equals(nodename)){
     i=i+1;
     while(!(invarLIST[i].equals(nodename+String.valueOf(guardno)))){
     i=i+1;}
     i=i+1;
     while(!(invarLIST[i].equals("endofguard"))){
     System.out.println(invarLIST[i]);inVAR[j]=invarLIST[i]; i=i+1; j=j+1;}
     break WHILELOOP;}
     i=i+1;}
}catch (Exception d){}
return inVAR;
public String[] outvarChan(String nodename, int guardcount)throws RemoteException{
     try{
     DriverMatrix_mthds drive = new DriverMatrix_mthds();
     outvarLIST = drive.outvarlist();
     int i=0;int j;
     while(outvarLIST[i]!=null){
          i=i+1;
     int arrlength = i;
     outVAR = new String[arrlength];
     i=0; j=0;
     WHILELOOP: while(!(outvarLIST[i].equals("end of file"))){
          if (outvarLIST[i].equals(nodename)){
               i=i+1;
               while(!(outvarLIST[i].equals(nodename+String.valueOf(guardcount)+"guard"))){
                    i=i+1;}
          i=i+1;
          while(!(outvarLIST[i].equals("end guard"))){
          System.out.println(outvarLIST[i]);outVAR[j]=outvarLIST[i]; i=i+1; j=j+1;}
          break WHILELOOP;}
     i=i+1;}
}catch (Exception d){}
return outVAR;
private static Boolean start;
private static Boolean tstart;
public void sendstart(Boolean start) throws RemoteException {
     tstart = start;
public Boolean getstart() throws RemoteException{
     return tstart;
private static Boolean done;
private static Boolean tdone;
public void senddone(Boolean done) throws RemoteException {
     tdone = done;
public Boolean getdone() throws RemoteException{
     return tdone;
private static Boolean vac_busy1;
private static Boolean tvac_busy1;
public void sendvac_busy1(Boolean vac_busy1) throws RemoteException {
     tvac_busy1 = vac_busy1;
public Boolean getvac_busy1() throws RemoteException{
     return tvac_busy1;
private static int cus1_rit1;
private static int tcus1_rit1;
public void sendcus1_rit1(int cus1_rit1) throws RemoteException {
     tcus1_rit1 = cus1_rit1;
public int getcus1_rit1() throws RemoteException{
     return tcus1_rit1;
private static int cus1_rit2;
private static int tcus1_rit2;
public void sendcus1_rit2(int cus1_rit2) throws RemoteException {
     tcus1_rit2 = cus1_rit2;
public int getcus1_rit2() throws RemoteException{
     return tcus1_rit2;
private static int cus1_rit3;
private static int tcus1_rit3;
public void sendcus1_rit3(int cus1_rit3) throws RemoteException {
     tcus1_rit3 = cus1_rit3;
public int getcus1_rit3() throws RemoteException{
     return tcus1_rit3;
private static int cus1_it1;
private static int tcus1_it1;
public void sendcus1_it1(int cus1_it1) throws RemoteException {
     tcus1_it1 = cus1_it1;
public int getcus1_it1() throws RemoteException{
     return tcus1_it1;
private static int cus1_it2;
private static int tcus1_it2;
public void sendcus1_it2(int cus1_it2) throws RemoteException {
     tcus1_it2 = cus1_it2;
public int getcus1_it2() throws RemoteException{
     return tcus1_it2;
private static int cus1_it3;
private static int tcus1_it3;
public void sendcus1_it3(int cus1_it3) throws RemoteException {
     tcus1_it3 = cus1_it3;
public int getcus1_it3() throws RemoteException{
     return tcus1_it3;
private static int stkit_11;
private static int tstkit_11;
public void sendstkit_11(int stkit_11) throws RemoteException {
     tstkit_11 = stkit_11;
public int getstkit_11() throws RemoteException{
     return tstkit_11;
private static int stkit_12;
private static int tstkit_12;
public void sendstkit_12(int stkit_12) throws RemoteException {
     tstkit_12 = stkit_12;
public int getstkit_12() throws RemoteException{
     return tstkit_12;
private static int stkit_13;
private static int tstkit_13;
public void sendstkit_13(int stkit_13) throws RemoteException {
     tstkit_13 = stkit_13;
public int getstkit_13() throws RemoteException{
     return tstkit_13;
private static int c1_it1;
private static int tc1_it1;
public void sendc1_it1(int c1_it1) throws RemoteException {
     tc1_it1 = c1_it1;
public int getc1_it1() throws RemoteException{
     return tc1_it1;
private static int c1_it2;
private static int tc1_it2;
public void sendc1_it2(int c1_it2) throws RemoteException {
     tc1_it2 = c1_it2;
public int getc1_it2() throws RemoteException{
     return tc1_it2;
private static int c1_it3;
private static int tc1_it3;
public void sendc1_it3(int c1_it3) throws RemoteException {
     tc1_it3 = c1_it3;
public int getc1_it3() throws RemoteException{
     return tc1_it3;
//endoffile

How can one develop "view only" client applications in Lookout?This is to develop remote monitoring without control functionality.

How can one develop "view only" client applications in Lookout?This is to develop remote monitoring without control functionality.
We have 10 Client Nodes in the field and we need two "View Only" functionality in Client machines located on Supervisory Desks.

I have done this. There are many ways to approach this but I will offer what I think is the easiest. This will work ONLY if you have been assigning security levels to your objects (objects that actually control devices in the field) greater than zero AND allowing a security level of zero to view all panels. When I develop interfaces I do this just for creating a non control client.
Basically, you remove all users from the Lookout client in the user manager. You will not be able to remove the built-ins, "Guest" and "Administrator". Now when the end users tries to login using his normal login he will be denied. Consequently, he will not be able to control. But, he will still be able to view all the information since a no login can view a panel with a viewing se
curity level of zero. You must ensure any pushbuttons that are used to open panels have a security level of zero.
Now you can copy this security profile by finding the lookout.sec file and copying it to another non-control client computer. In Windows NT this file is located in the system32 directory.
There are many other ways but I find this the easiest.
Regards,
Tommy Scharmann

Windows 8 64 bit issues with Cisco AnyConnect Secure Mobility Client version 3.1.04072

I am having an issue with the Cisco AnyConnect Secure Mobility Client version 3.1.04072 on a Windows 8 64 bit laptop.
I am able to create the VPN connection but the connection will not allow data to be transferred.
Stats from a manual connection:
Cisco AnyConnect Secure Mobility Client Version 3.1.04072
VPN Stats
    Bytes Received: 14375
    Bytes Sent: 0
    Compressed Bytes Received: 0
    Compressed Bytes Sent: 0
    Compressed Packets Received: 0
    Compressed Packets Sent: 0
    Control Bytes Received: 0
    Control Bytes Sent: 0
    Control Packets Received: 0
    Control Packets Sent: 0
    Encrypted Bytes Received: 7820
    Encrypted Bytes Sent: 1207
    Encrypted Packets Received: 9
    Encrypted Packets Sent: 3
    Inbound Bypassed Packets: 0
    Inbound Discarded Packets: 0
    Outbound Bypassed Packets: 0
    Outbound Discarded Packets: 0
    Packets Received: 4
    Packets Sent: 0
    Time Connected: 00:03:01
Protocol Info
    Inactive Protocol
        Protocol Cipher: RSA_3DES_168_SHA1
        Protocol Compression: None
        Protocol State: Disconnected
        Protocol: DTLS
    Active Protocol
        Protocol Cipher: RSA_3DES_168_SHA1
        Protocol Compression: Deflate
        Protocol State: Connected
        Protocol: TLS
OS Version
    Windows 8 : WinNT 6.2.9200
Log from the data transmission software:
24/12/2013 12:51:13 - Application version = 1.11.28.0
24/12/2013 12:51:13 - Lodgement Library Version = 1.11.28.0
24/12/2013 12:51:13 - Connection Method = INTERNET
24/12/2013 12:51:13 - DIS Connection Type = Automatic
24/12/2013 12:51:13 - VPN Client = ACTIVE
24/12/2013 12:51:13 - Check Available Connections = NOT ACTIVE
24/12/2013 12:51:13 - Windows 8 (6.2.9200 SP )
24/12/2013 12:51:13 - Language: English (Australia)
24/12/2013 12:51:13 -
24/12/2013 12:51:13 - Connected to ISP via LAN
24/12/2013 12:51:13 - Checking for presence of VPN client.
24/12/2013 12:51:13 - VPN client found. (C:\Program Files (x86)\Cisco\Cisco AnyConnect Secure Mobility Client\vpncli.exe)
24/12/2013 12:51:13 - The Cisco AnyConnect Secure Mobility Client application is in use.
24/12/2013 12:51:18 - Terminating Cisco AnyConnect Secure Mobility Client in progress ...
24/12/2013 12:51:18 -
24/12/2013 12:51:18 - Checking Cisco AnyConnect version.
24/12/2013 12:51:19 - Cisco AnyConnect Secure Mobility Client (version 3.1.04072) .
24/12/2013 12:51:19 - Copyright (c) 2004 - 2013 Cisco Systems, Inc. All Rights Reserved.
24/12/2013 12:51:19 - Config file directory:C:\Program Files (x86)\Cisco\Cisco AnyConnect Secure Mobility Client\
24/12/2013 12:51:19 -
24/12/2013 12:51:19 - Loading profile:C:\ProgramData\Cisco\Cisco AnyConnect Secure Mobility Client\Profile\ELS-IMelAde-TCP.xml
24/12/2013 12:51:19 -
24/12/2013 12:51:19 - Initializing the VPN connection.
24/12/2013 12:51:19 - Ready to connect.
24/12/2013 12:51:19 - Ready to connect.
24/12/2013 12:51:19 - Contacting ELS-IMelAde-TCP.
24/12/2013 12:51:23 - Authenticating user.
24/12/2013 12:51:23 - Connected to VPN concentrator.
24/12/2013 12:51:23 - Establishing VPN session...
24/12/2013 12:51:23 - Checking for profile updates...
24/12/2013 12:51:23 - Checking for product updates...
24/12/2013 12:51:23 - Checking for customization updates...
24/12/2013 12:51:23 - Performing any required updates...
24/12/2013 12:51:23 - Establishing VPN session...
24/12/2013 12:51:23 - Establishing VPN - Initiating connection...
24/12/2013 12:51:24 - Establishing VPN - Examining system...
24/12/2013 12:51:24 - Establishing VPN - Activating VPN adapter...
24/12/2013 12:51:24 - Establishing VPN - Configuring system...
24/12/2013 12:51:24 - Establishing VPN...
24/12/2013 12:51:24 - Connected to VPN concentrator.
24/12/2013 12:51:24 - Connected to ELS-IMelAde-TCP.
24/12/2013 12:51:24 - Connected to VPN concentrator.
24/12/2013 12:51:24 - Connection to VPN client return code = 0.
24/12/2013 12:51:24 - Connected to VPN concentrator.
24/12/2013 12:51:24 - Connecting : Connecting to 203.202.43.2.
24/12/2013 12:51:45 - Error in ConnectToDIS - Socket Error # 10060
Connection timed out.
24/12/2013 12:51:46 -
24/12/2013 12:51:46 - Disconnecting from the VPN concentrator.
24/12/2013 12:51:46 - Disconnect in progress, please wait...
24/12/2013 12:51:46 - Detaching AnyConnect, please wait...
24/12/2013 12:51:47 - Detached.
24/12/2013 12:51:47 - Disconnected from VPN concentrator.
24/12/2013 12:51:47 - *****************************************************
24/12/2013 12:51:47 -               END OF LODGEMENT PROCESS
24/12/2013 12:51:47 - *****************************************************
Issue history:
- Previously running Cisco VPN client on Windows 8 64 bit laptop (VPN working and able to transmit data over VPN)
- Upgrade to Windows 8.1 stopped the VPN client working
- Refreshed system back to Windows 8 and reinstalled all software
- Cisco VPN client would not install on system
- Cisco AnyConnect Secure Mobility Client installs and is able to connect to VPN host
- Cisco AnyConnect Secure Mobility Client downloads and installs software from VPN host
- Data transmission software returns error code #10060
Any assistance would be greatly appreciated.

anyone found the fix for this?

Weblogic 10.0 web application with CLIENT-CERT suddenly redirect with 401

Hi everybody,
we currently have a Weblogic Portal 10.2 web application with an integrated Windows authentication.
I configured a Negociate Identity Asserter and an Active Directory provider.
I configure Kerberos services, so we have succefully access to our application through the Windows session.
But, most of time we have 401 errors on any page when navigating. In fact, the error occures when clicking on a link when a page is not fully loaded.
For our tests, we use the security webapp provided by BEA/Oracle, and it just work.
The web.xml used in our webapp :
<security-constraint>
<web-resource-collection>
<web-resource-name>sso</web-resource-name>
<description>Desc</description>
<url-pattern>/appmanager/*</url-pattern>
<http-method>GET</http-method>
<http-method>POST</http-method>
</web-resource-collection>
<auth-constraint>
<description>desc</description>
<role-name>ssoRole</role-name>
</auth-constraint>
</security-constraint>
<login-config>
<auth-method>CLIENT-CERT</auth-method>
<realm-name/>
</login-config>
<security-role>
<description>Authenticated user</description>
<role-name>ssoRole</role-name>
</security-role>

which version of web server r u using here ? 6.1 or 7.0 ? if it is 6.1 then there is no easy <If> syntax. if u r using 7.0, then u need to be aware that the processing of 'ppath' is slightly different in 7.0
in any case, this would be the syntax
<Object name="weblogic" ppath="/hw/">
Service fn="wl_proxy" WebLogicHost="------------------" WebLogicPort="------"
# gateway timeout - back end web logic not responding handle differently
<If code='504'>
# send it to a different post..
Service fn="wl_proxy" WebLogicHost="------------------" WebLogicPort="------"
</If>
</Object>
- sriram

Get screenshot with mouse cursor and send for client application

I took
this function for getting a screenshot from a client application. I to tried adapt this function in my project, but I can not capture desktop showing mouse cursor (coming from a remote pc) in my server application (controller).
Here is my adaptation (in client side) but without success:
void SendScreenProc()
// Send First Bitmap
MemoryStream streamScreen = new MemoryStream();
this.bmpScreenSend = CaptureScreen(true);//new Bitmap(this.boundScreen.Width, this.boundScreen.Height, PixelFormat.Format24bppRgb);
Graphics g = Graphics.FromImage(this.bmpScreenSend);
g.CopyFromScreen(0, 0, 0, 0, this.boundScreen.Size);
this.bmpScreenSend.Save(streamScreen, System.Drawing.Imaging.ImageFormat.Png);
Compress.CompressStream(streamScreen);
Byte[] bufferScreen = streamScreen.ToArray();
mreSendData.WaitOne();
this.queueSendData.AddScreen(streamScreen.GetBuffer());
streamScreen.Close();
this.receivedScreen = 0;
while (this.remoted)
// Send next bitmap result by difference with previous bitmap.
if(this.receivedScreen == 0) {
} else {
Bitmap bmpCurrentScreen = CaptureScreen(true);//new Bitmap(this.boundScreen.Width, this.boundScreen.Height, PixelFormat.Format24bppRgb);
g = Graphics.FromImage(bmpCurrentScreen);
g.CopyFromScreen(0, 0, 0, 0, this.boundScreen.Size);
if (this.receivedScreen == 1) {
if(this.bmpScreen != null) {
this.bmpScreen.Dispose();
this.bmpScreen = this.bmpScreenSend;
} else if(this.receivedScreen == 2) {
if (queueSendData.AvailableScreenAdd && IsDifferent(bmpCurrentScreen, this.bmpScreen))
streamScreen = new MemoryStream();
Bitmap bmpDiff = XorBitmap(this.bmpScreen, bmpCurrentScreen);
bmpDiff.Save(streamScreen, System.Drawing.Imaging.ImageFormat.Png);
this.bmpScreenSend.Dispose();
bmpDiff.Dispose();
this.bmpScreenSend = bmpCurrentScreen;
mreSendData.WaitOne();
this.queueSendData.AddScreen(streamScreen.GetBuffer());
streamScreen.Close();
this.receivedScreen = 0;
else
bmpCurrentScreen.Dispose();
Thread.Sleep(30);

Hi FlashCoder,
Do you mean like this capture? Use mouse cursor to capture the specified area.
If so, here is a sample that I wrote. It should meet your requirement. If not, please feel free to let me know.
The following is ScreenForm code
public partial class ScreenForm : Form
public ScreenForm()
InitializeComponent();
public event copyToFatherTextBox copytoFather;
public bool begin = false;
public bool isDoubleClick = false;
public Point firstPoint = new Point(0, 0);
public Point secondPoint = new Point(0, 0);
public Image cachImage = null;
public int halfWidth = 0;
public int halfHeight = 0;
/*Copy the entire screen, and form fill the screen*/
public void copyScreen()
Rectangle r = Screen.PrimaryScreen.Bounds;
Image img = new Bitmap(r.Width, r.Height);
Graphics g = Graphics.FromImage(img);
g.CopyFromScreen(new Point(0, 0), new Point(0, 0), r.Size);
//Maximize form
this.Width = r.Width;
this.Height = r.Height;
this.Left = 0;
this.Top = 0;
pictureBox1.Width = r.Width;
pictureBox1.Height = r.Height;
pictureBox1.BackgroundImage = img;
cachImage = img;
halfWidth = r.Width / 2;
halfHeight = r.Height / 2;
this.Cursor = new Cursor(GetType(), "MyCursor.cur");
private void ScreenForm_Load(object sender, EventArgs e)
copyScreen();
/*Begins when the mouse is pressed screenshots*/
private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
if(!isDoubleClick)
begin = true;
firstPoint = new Point(e.X, e.Y);
changePoint(e.X, e.Y);
msg.Visible = true;
/*Displayed when the mouse moves to intercept the border*/
private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
if (begin)
//Redraw the background image
secondPoint = new Point(e.X, e.Y);
int minX = Math.Min(firstPoint.X, secondPoint.X);
int minY = Math.Min(firstPoint.Y, secondPoint.Y);
int maxX = Math.Max(firstPoint.X, secondPoint.X);
int maxY = Math.Max(firstPoint.Y, secondPoint.Y);
Image tempimage = new Bitmap(cachImage);
Graphics g = Graphics.FromImage(tempimage);
//Picture cropping frames
g.DrawRectangle(new Pen(Color.Red),minX,minY,maxX-minX,maxY-minY);
pictureBox1.Image = tempimage;
//Calculation of coordinate information
msg.Text = "Upper left corner coordinates：(" + minX.ToString() + "," + minY.ToString() + ")\r\n";
msg.Text += "Lower right corner coordinates：(" + maxX.ToString() + "," + maxY.ToString() + ")\r\n";
msg.Text += "Screenshot size：" + (maxX - minX) + "×" + (maxY - minY) + "\r\n";
msg.Text += "Double-click end screenshots anywhere!";
changePoint((minX + maxX) / 2, (minY + maxY) / 2);
/*Dynamically adjusts the displayed location, enter the parameters for the current screen mouse position*/
public void changePoint(int x, int y)
if (x < halfWidth)
if (y < halfHeight)
{ msg.Top = halfHeight; msg.Left = halfWidth; }
else
{ msg.Top = 0; msg.Left = halfWidth; }
else
if (y < halfHeight)
{ msg.Top = halfHeight; msg.Left = 0; }
else
{ msg.Top = 0; msg.Left = 0; }
/*Screenshot is completed when you let go of the mouse operation */
private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
begin = false;
isDoubleClick = true;
/*When I double-click a screenshot when notifying parent form complete screenshot action, while closing the form*/
private void pictureBox1_DoubleClick(object sender, EventArgs e)
if (firstPoint != secondPoint)
int minX = Math.Min(firstPoint.X, secondPoint.X);
int minY = Math.Min(firstPoint.Y, secondPoint.Y);
int maxX = Math.Max(firstPoint.X, secondPoint.X);
int maxY = Math.Max(firstPoint.Y, secondPoint.Y);
Rectangle r = new Rectangle(minX, minY, maxX - minX, maxY - minY);
copytoFather(r);
this.Close();
//msg.Text = r.ToString();
This is the mainFrom code.
public delegate void copyToFatherTextBox(Rectangle r);
public partial class Form1 : Form
public Form1()
InitializeComponent();
/*Start screenshot*/
private void button1_Click(object sender, EventArgs e)
ScreenForm screen = new ScreenForm();
screen.copytoFather += new copyToFatherTextBox(copytoTextBox);
screen.ShowDialog();
/*Screenshot of subsequent operations*/
public void copytoTextBox(Rectangle rec)
Rectangle rec2=rec;
if(rec.Width>2&&rec.Height>2)
rec2= new Rectangle(rec.X + 1, rec.Y + 1, rec.Width - 2, rec.Height - 2);
Rectangle r = Screen.PrimaryScreen.Bounds;
Image img = new Bitmap(rec2.Width, rec2.Height);
Graphics g = Graphics.FromImage(img);
g.CopyFromScreen(rec2.Location, new Point(0, 0), rec2.Size);
Clipboard.SetDataObject(img, false);
richTextBox1.Paste();
Best regards,
Kristin
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