Displaying image on canvas as background for joystick display

i am displating my joystick on canvas sucessfully and now i want to add a background image to it for better display please guide in detail. thanks in advance .. ahsan

Hello ahsan, you can use CanvasDrawBitmap to draw ain image on the canvas.
When searching for a function on a particular control, you can right-click on the control and choose "Control help" in the context menu: in case of the canvas you'll arrive to this help page where some useful resources are grouped. You can look at Programming with Canvas Controls to get some tip on how to use the control in you applications, of simply choose Canvas Control Functions to get a list of all function that can be used on that control. In this page CanvasDrawBitmap is listed.
Additionally, if you go to Help >> Find examples... and search for canvas, you'll get a list of sample projects related to that control: "Alphablend" is one of them that shows how to draw an image on the canvas.
By using these tips you'll be able to proceed in your work without necessarily wait for some forum user to help you.
Proud to use LW/CVI from 3.1 on.
My contributions to the Developer Zone Community
If I have helped you, why not giving me a kudos?

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HI,
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ImageBrush ib = new ImageBrush();
private void Image_MouseLeftButtonDown_1(object sender, RoutedEventArgs e)
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op.Filter = "All supported graphics|*.jpg;*.jpeg;*.png|" +
"JPEG (*.jpg;*.jpeg)|*.jpg;*.jpeg|" +
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if (op.ShowDialog() == true)
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Please help me out to get transparency for path in canvas to view background image in canvas.
The complete code is in below link:
https://onedrive.live.com/redir?resid=876CFAE94C306176!112&authkey=!AC1sQIYwyoRYT_o&ithint=file%2crar
Regards,
Viswa.

Hi ViswAmmu,
>>Please help me out to get transparency for path in canvas to view background image in canvas.
If I'm not misunderstanding, I think you just need to loop through all Canvas.Children and set Opacity property for them:
private void Image_MouseLeftButtonDown_1(object sender, RoutedEventArgs e)
//Loop through all children items
foreach(UIElement v in CanvasPanel.Children)
v.Opacity = 0;
op.Title = "Select a picture";
op.Filter = "All supported graphics|*.jpg;*.jpeg;*.png|" +
"JPEG (*.jpg;*.jpeg)|*.jpg;*.jpeg|" +
"Portable Network Graphic (*.png)|*.png";
if (op.ShowDialog() == true)
ib.ImageSource = new BitmapImage(new Uri(op.FileName));
imgBackground.Source = new BitmapImage(new Uri(op.FileName));
CanvasPanel.Background = ib;
Screenshot:
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.add(jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jLabel4)
.add(jLabel2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 161, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
.add(43, 43, 43)
.add(jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jPasswordField1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 190, Short.MAX_VALUE)
.add(jFormattedTextField1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 190, Short.MAX_VALUE))
.addContainerGap())
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jPanel1Layout.createSequentialGroup()
.add(47, 47, 47)
.add(jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
.add(jLabel2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 34, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(jFormattedTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
.add(60, 60, 60)
.add(jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jLabel4)
.add(jPasswordField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
.addContainerGap(org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
jButton1.setText("Login");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
jButton3.setText("Exit");
jButton3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton3ActionPerformed(evt);
org.jdesktop.layout.GroupLayout jPanel2Layout = new org.jdesktop.layout.GroupLayout(jPanel2);
jPanel2.setLayout(jPanel2Layout);
jPanel2Layout.setHorizontalGroup(
jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(org.jdesktop.layout.GroupLayout.TRAILING, jPanel2Layout.createSequentialGroup()
.add(38, 38, 38)
.add(jButton1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 93, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 110, Short.MAX_VALUE)
.add(jButton3, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 93, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(55, 55, 55))
jPanel2Layout.setVerticalGroup(
jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jPanel2Layout.createSequentialGroup()
.add(38, 38, 38)
.add(jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
.add(jButton3, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 32, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(jButton1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 32, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
.addContainerGap(30, Short.MAX_VALUE))
org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(574, 574, 574)
.add(jLabel1))
.add(layout.createSequentialGroup()
.add(459, 459, 459)
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING)
.add(jPanel1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(jPanel2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))))
.addContainerGap(521, Short.MAX_VALUE))
layout.setVerticalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(149, 149, 149)
.add(jLabel1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 66, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(43, 43, 43)
.add(jPanel1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(42, 42, 42)
.add(jPanel2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addContainerGap(250, Short.MAX_VALUE))
pack();
}// </editor-fold>
private void jPasswordField1ActionPerformed(java.awt.event.ActionEvent evt) {
private void jFormattedTextField1ActionPerformed(java.awt.event.ActionEvent evt) {
private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
Object src=evt.getSource();
if(src==jButton3)
dispose();
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
Object src=evt.getSource();
if(src==jButton1)
admin_name=jFormattedTextField1.getText();
password=jPasswordField1.getText();
try
Class.forName("oracle.jdbc.driver.OracleDriver");
con=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:orcle","scott","root");
stmt=con.createStatement();
rs=stmt.executeQuery("select admin_name,password from admin_registration where admin_name='chandana' and password='8989' ");
while(rs.next())
if(admin_name.equals(rs.getString(1))&&password.equals(rs.getString(2)))
admin_registration a=new admin_registration();
a.setVisible(true);
dispose();
else
JOptionPane.showMessageDialog(null,"Please enter admin name & password ");
catch(ClassNotFoundException e)
e.printStackTrace();
catch(SQLException e)
e.printStackTrace();
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
admin_login_code a=new admin_login_code();
a.setVisible(true);
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton3;
private javax.swing.JFormattedTextField jFormattedTextField1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel4;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel2;
private javax.swing.JPasswordField jPasswordField1;
// End of variables declaration
Can any one can help me how to set a background for jFrame?
Thank you in advance.
Edited by: forums.com on Jul 14, 2008 1:40 AM

90% of the code you posted is not relevant to your question.
If you want further help post a Short, Self Contained, Compilable and Executable, Example Program (SSCCE) that demonstrates the problem.
And don't forget to use code tags when posting code.

Displaying image on canvas as background for joystick display

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