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    <p>I did a similar thing with a jFrame, I got around it by adding 4 very thin buttons around the outside of my jFrame, and used the mousepressed and mousedragged listener from the buttons to control jFrame resizing, it worked out pretty smoothly.</p> <p>The mousePressed listener lets us get the starting location so I can calculate the distance that the frame is dragged/resized</p> <p>If you want to save on resources you should resize all child components when the mouse is released not when it is dragged</p> <p>Edit: Example of resizing the frame on the X axis.</p> <pre><code>public class NewJFrame extends javax.swing.JFrame { //demo locations int X1 = 0; int X2 = 0; public NewJFrame() { initComponents(); } @SuppressWarnings("unchecked") private void initComponents() { ResizeEast = new javax.swing.JButton(); jButton1 = new javax.swing.JButton(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); setUndecorated(true); ResizeEast.addMouseListener(new java.awt.event.MouseAdapter() { public void mousePressed(java.awt.event.MouseEvent evt) { ResizeEastMousePressed(evt); } public void mouseReleased(java.awt.event.MouseEvent evt) { ResizeEastMouseReleased(evt); } }); ResizeEast.addMouseMotionListener(new java.awt.event.MouseMotionAdapter() { public void mouseDragged(java.awt.event.MouseEvent evt) { ResizeEastMouseDragged(evt); } }); jButton1.setText("Close"); jButton1.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { jButton1ActionPerformed(evt); } }); javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addContainerGap() .addComponent(jButton1) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 320, Short.MAX_VALUE) .addComponent(ResizeEast, javax.swing.GroupLayout.PREFERRED_SIZE, 11, javax.swing.GroupLayout.PREFERRED_SIZE)) ); layout.setVerticalGroup( layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addContainerGap() .addComponent(jButton1) .addContainerGap(266, Short.MAX_VALUE)) .addComponent(ResizeEast, javax.swing.GroupLayout.DEFAULT_SIZE, 300, Short.MAX_VALUE) ); pack(); } private void ResizeEastMousePressed(java.awt.event.MouseEvent evt) { //set mosuepressed location to X1 and Y1 X1 = evt.getX(); } private void ResizeEastMouseReleased(java.awt.event.MouseEvent evt) { //update the location and size of all child components } private void ResizeEastMouseDragged(java.awt.event.MouseEvent evt) { //resize jframe on the fly X2 = evt.getX(); //set minimum size to 100 wide if ((getWidth() - (X1 - X2)) &lt; 100) { X2 = X1; } //resize east side only this.setSize(getWidth() - (X1 - X2), getHeight()); } private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { System.exit(0); } public static void main(String args[]) { java.awt.EventQueue.invokeLater(new Runnable() { public void run() { new NewJFrame().setVisible(true); } }); } // Variables private javax.swing.JButton ResizeEast; private javax.swing.JButton jButton1; } </code></pre> <p>For re-sizing from the corners create small corner buttons that resize X and Y like so: <code>YourFrame.setSize(getWidth() - (X1 - X2), getHeight() - (Y1 - Y2));</code></p>
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    1. POJava how to resize borderless window using mouse drag?
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    1. CODo you still have the project? I would very much like to see an example of how you did it.
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    2. COI do not have it sorry, but I have added a basic example that you can compile
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    3. COThank you very much for the help, I shall try this as soon as I get home
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