Luong Vuong

Hi i am trying to set the font of my label in my panel using the following code:

p2.setFont(Font.PLAIN);
but when i hover my mouse over it, there is an error saying "cannot find symbol, method setFont(int)". I am looking at the API for the panel and i can see that this functions is available to the pannel class. Can sombodoy tell me what i have missed out please.

Full code
import java.awt.*; import java.awt.event.*; public class BorderLayoutApp { public static void main(String[] args) { new MainWindow(); } } class MainWindow extends Frame { private int m_nWndWidth; private int m_nWndHeight; MainWindow() { Toolkit thisScreen = Toolkit.getDefaultToolkit(); Dimension thisScreenSize = thisScreen.getScreenSize(); m_nWndWidth = 5 * thisScreenSize.width/8; m_nWndHeight = 5 * thisScreenSize.height/8; setSize(m_nWndWidth, m_nWndHeight); setTitle("BorderLayout"); Label labelOne = new Label("One"); Label labelTwo = new Label("Two"); Label labelThree = new Label("Three"); Label labelFour = new Label("Four"); Label labelFive = new Label("Five"); Panel p1 = new Panel(); Panel p2 = new Panel(); Panel p3 = new Panel(); Panel p4 = new Panel(); Panel p5 = new Panel(); p1.add(labelOne); p1.setBackground(Color.RED); add(p1, BorderLayout.NORTH); p2.add(labelTwo); p2.setBackground(Color.BLUE); p2.setFont(Font.PLAIN); add(p2, BorderLayout.EAST); setVisible(true); } }

Api link:
http://java.sun.com/javase/6/docs/api/index.html?overview-summary.html
Thanks
[ August 25, 2007: Message edited by: Luong Vuong ]

Hi i am trying to set the font of my label in my panel using the following code:

p2.setFont(Font.PLAIN);
but when i hover my mouse over it, there is an error saying "cannot find symbol, method setFont(int)". I am looking at the API for the panel and i can see that this functions is available to the pannel class. Can sombodoy tell me what i have missed out please.

Full code
import java.awt.*; import java.awt.event.*; public class BorderLayoutApp { public static void main(String[] args) { new MainWindow(); } } class MainWindow extends Frame { private int m_nWndWidth; private int m_nWndHeight; MainWindow() { Toolkit thisScreen = Toolkit.getDefaultToolkit(); Dimension thisScreenSize = thisScreen.getScreenSize(); m_nWndWidth = 5 * thisScreenSize.width/8; m_nWndHeight = 5 * thisScreenSize.height/8; setSize(m_nWndWidth, m_nWndHeight); setTitle("BorderLayout"); Label labelOne = new Label("One"); Label labelTwo = new Label("Two"); Label labelThree = new Label("Three"); Label labelFour = new Label("Four"); Label labelFive = new Label("Five"); Panel p1 = new Panel(); Panel p2 = new Panel(); Panel p3 = new Panel(); Panel p4 = new Panel(); Panel p5 = new Panel(); p1.add(labelOne); p1.setBackground(Color.RED); add(p1, BorderLayout.NORTH); p2.add(labelTwo); p2.setBackground(Color.BLUE); p2.setFont(Font.PLAIN); add(p2, BorderLayout.EAST); setVisible(true); } }

Api link:
http://java.sun.com/javase/6/docs/api/index.html?overview-summary.html
Thanks
[ August 25, 2007: Message edited by: Luong Vuong ]

hi i have created a panel:

Label enterTriangle = new Label("Enter number of triangles!!!!!"); Panel top = new Panel(); top.add(enterTriangle); add(top, BorderLayout.NORTH);

Is there anyway of using the panel to accept user input, in this case the number of triangles.

That does in a way go into context. At this present moment in time i can click on the screen and my shape appears(triangle), that also inturn starts a timer. I belive i may not have provided you with enough coding, if so sorry about that.

Point ptMouse = new Point(); ptMouse = evt.getPoint(); xs[0] = ptMouse.x; ys[0] = ptMouse.y; xs[1] = xs[0]; ys[1] = ys[0]+80; xs[2] = xs[0]+90; ys[2] = ys[0]; class TimeCatcher implements ActionListener { public void actionPerformed(ActionEvent e) { m_nSeconds++; m_bPing= true; // event that is triggered by the timer every N milliseconds repaint(); } }

if(m_bMouse) { gc.setColor(Color.RED); m_Timer.start(); // starts the timer from 1 m_bStart = false; gc.drawString( " " + m_nSeconds, 7*winSize.width/8 , 7*winSize.height/10 ); for( int i = 0; i < m_nTrianglesDrawn; i++) { gc.fillPolygon( m_polyTriangleArr[i]); } }
I've included a timer for this so that when the user clicks anywhere on the screen, the timer goes. colours used in this order; red, green, blue, then back to begining.

Ideally this is what i would like to happen when a user clicks on the screen:

a triangle appears > timer starts > the triangle is red> then green > then blue > then red etc ...
This should happen for every triangle that i click on the screen.
Do you think it is necessary to add a timer for this situation? If so how would i modify it to do this?

If not, based on u'r last comment and with my extra coding, again how would i modify it?

Hope this is clearer. Again, sorry for not adding more code.

Hi i have made a game where users click on the screen and a red triangle appears correspinding to where they clicked. How do make the game act so that when i/user clicks on the screen the user would see for example the colours red, blue, green, yellow in that order in each triangle. Would i need to use the Cardlayout functionality ? if not, how?
The code for it to be red is as follows:
if(m_bMouse) { gc.setColor(Color.RED); for( int i = 0; i < m_nTrianglesDrawn; i++) { gc.fillPolygon( m_polyTriangleArr); m_bMouse = false; } }

Here is the full code:
import java.awt.*; import java.awt.event.*; import javax.swing.*; public class DrawTri { public static void main(String args[]) { new MainWindow(); } } class MainWindow extends Frame { private boolean m_bMouse; private int m_nTrianglesToDraw; private int m_nTrianglesDrawn; private int m_nWndWidth; private int m_nWndHeight; private int[]x = new int[3]; private int[]y = new int[3]; private int n; // count of points private Polygon[] m_polyTriangleArr; MainWindow() { setTitle("Drawing Triangles"); m_bMouse = false; m_nTrianglesToDraw = 0; m_nTrianglesDrawn = 0; m_WndFont = new Font ("Helvetica", Font.BOLD, 20); addMouseListener(new MouseCatcher() ); setVisible(true); } class MouseCatcher extends MouseAdapter { public void mousePressed(MouseEvent evt) { Point ptMouse = new Point(); ptMouse = evt.getPoint(); if(m_nTrianglesDrawn < m_nTrianglesToDraw) { //private Polygon[] m_polyTriangleArr; m_polyTriangleArr[m_nTrianglesDrawn] = new Polygon( x, y, n); //m_polyTriangleArr[m_nTrianglesDrawn] //= new Polygon( ptMouse, ptMouse, int); m_nTrianglesDrawn++; m_bMouse = true; repaint(); } } public void paint(Graphics gc) { x[0]=100; x[1]=150; x[2]=50; y[0]=100; y[1]=150; y[2]=150; n = 3; Polygon myTri = new Polygon(x, y, n); // a triangle if(m_bMouse) { gc.setColor(Color.green); for( int i = 0; i < m_nTrianglesDrawn; i++) { gc.fillPolygon(x, y, n); } } }
Hope that this code helps guys

sorry about that.

Hi i am trying to create a triangle using the Polygon class. Eventually the program should allow the user to click on the screen and triangles should appear. I the programmer decide the size of the triangle.

private int[]x = new int[3]; private int[]y = new int[3]; private int n; // count of points public void paint(Graphics gc) { if(m_bMouse) { gc.setColor(Color.green); gc.fillPolygon(myTri.x, myTri.y, n); } }
When i try to compile i get the following error message
Cannot find symbol variable x
---- find symbol variable y.

Please help, urgent