Monday, September 24, 2012

How to hide a window from Win32 Taskbar?


Argh !!! I don't know why but I keep forgetting the ex-style bit for this... 
To prevent the window button from being placed on the taskbar, create the unowned window with the WS_EX_TOOLWINDOW extended style. As an alternative, you can create a hidden window and make this hidden window the owner of your visible window.
The Shell will remove a window's button from the taskbar only if the window's style supports visible taskbar buttons. If you want to dynamically change a window's style to one that doesn't support visible taskbar buttons, you must hide the window first (by calling ShowWindow with SW_HIDE), change the window style, and then show the window.
Taken from here: The Taskbar

Tuesday, September 18, 2012

3 easy steps to self-sign a Applet Jar file

Found this link that explains how to self-sign an applet in 3 easy steps:
  1. keytool -genkey -keystore myKeyStore -alias me
  2. keytool -selfcert -keystore myKeyStore -alias me
  3. jarsigner -keystore myKeyStore jarfile.jar me

Thursday, August 23, 2012

Firebug Lite for SWT Browser on Windows

Recently I came across this question on stackoverflow 'Eclipse swt browser and firebug lite'. The solution seemed very obvious. I answered the question there also, you can always upvote it ;).

The output:


The code for the same is as follows:

import org.eclipse.swt.SWT;
import org.eclipse.swt.browser.Browser;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class FirebugLite 
{
 public static void main(String[] args) {
  new FirebugLite().start();
 }
 
 public void start()
 {
  Display display = new Display();
  Shell shell = new Shell(display);
  shell.setLayout(new GridLayout(1, false));
  GridData gridData = new GridData(SWT.FILL, SWT.FILL, true, true);
  gridData.widthHint = SWT.DEFAULT;
  gridData.heightHint = SWT.DEFAULT;
  shell.setLayoutData(gridData);
  shell.setText("Firebug Lite for SWT ;)");
  
  final Browser browser = new Browser(shell, SWT.NONE);
  GridData gridData2 = new GridData(SWT.FILL, SWT.FILL, true, true);
  gridData2.widthHint = SWT.DEFAULT;
  gridData2.heightHint = SWT.DEFAULT;
  browser.setLayoutData(gridData2);
  
  Button button = new Button(shell, SWT.PUSH);
  button.setLayoutData(new GridData(SWT.CENTER, SWT.CENTER, false, false));
  button.setText("Install");
  button.addSelectionListener(new SelectionAdapter() {
   public void widgetSelected(SelectionEvent e) {
    browser.setUrl("javascript:(function(F,i,r,e,b,u,g,L,I,T,E){if(F.getElementById(b))return;E=F[i+'NS']&&F.documentElement.namespaceURI;E=E?F[i+'NS'](E,'script'):F[i]('script');E[r]('id',b);E[r]('src',I+g+T);E[r](b,u);(F[e]('head')[0]||F[e]('body')[0]).appendChild(E);E=new%20Image;E[r]('src',I+L);})(document,'createElement','setAttribute','getElementsByTagName','FirebugLite','4','firebug-lite.js','releases/lite/latest/skin/xp/sprite.png','https://getfirebug.com/','#startOpened');");
   }
  });
  
  browser.setUrl("http://stackoverflow.com/questions/12003602/eclipse-swt-browser-and-firebug-lite");

  shell.open();
  while (!shell.isDisposed()) {
   if (!display.readAndDispatch())
    display.sleep();
  }
  display.dispose();
 }
}

Tuesday, July 31, 2012

SWT Browser and Image Capture

Recently I was playing with the SWT-COM bridge and its Win32 APIs. Believe me or not, but the SWT Browser is the best SWT based UI control I have seen (you can argue but without any success). 

One of the experimental feature I tried accomplishing was to print the full HTML page as Image, and the result was superb !!

See the below images for the embedded browser control and the output of the image capturing utility !! Cool right ;)

Modified Browser Control:




Captured Image:


Tuesday, June 5, 2012

Atlapp and secure atl !!

After upgrading to VS2008, I started getting errors for lstrlenA, size_t, and lstrcpynA. My "include directories" settings are exactly the same as my old VS2005, and if I open the project in VS2005, everything compiles just fine. So what is the fix for this problem??

And the fix is really simple, before including atlapp.h, just define:
 
#define _SECURE_ATL 1