mfc橡皮筋绘制折线图代码(mfc橡皮筋技术绘图)
admin 发布:2022-12-19 12:09 121
本篇文章给大家谈谈mfc橡皮筋绘制折线图代码,以及mfc橡皮筋技术绘图对应的知识点,希望对各位有所帮助,不要忘了收藏本站喔。
本文目录一览:
- 1、mfc 橡皮筋 窗口大小改变 画的直线就消失了,在ondraw里或是onpaint,这样的回答就不用回答了,要具体的
- 2、请问mfc绘制橡皮筋椭圆这么做
- 3、如何在netbeans6.8中用Java语言绘制类型于下图的折线图,要有详细代码
mfc 橡皮筋 窗口大小改变 画的直线就消失了,在ondraw里或是onpaint,这样的回答就不用回答了,要具体的
你好,人家说得并没有错,窗口放大或缩小客户区会被自动刷新,而刷新后onDraw或者onPaint函数自动被调用,如果把作图程序放在这些函数中,每次窗口放大或缩小后画图程序自动会被调用,因此图形在窗口放大或缩小后就不会消失;至于图形自动移动,个一段时间后,刷新窗口,并在新的位置画图即可。
请问mfc绘制橡皮筋椭圆这么做
可以参考一下mfc绘制橡皮筋矩形的代码,自己修改一下实现椭圆功能。
如何在netbeans6.8中用Java语言绘制类型于下图的折线图,要有详细代码
public class XYJFrame extends javax.swing.JFrame {
/**
* Creates new form XYJFrame
*/
public XYJFrame() {
initComponents();
iniCoordinate();
}
/**
* Netbeans 生成的代码,用于界面设计
*/
@SuppressWarnings("unchecked")
// editor-fold defaultstate="collapsed" desc="Generated Code"
private void initComponents() {
lblXCoordinate = new javax.swing.JLabel();
lblYCoordinate = new javax.swing.JLabel();
txtXCoordinate = new javax.swing.JTextField();
txtYCoordinate = new javax.swing.JTextField();
btnCalculateY = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
lblXCoordinate.setText("X 坐标");
lblYCoordinate.setText("Y 坐标");
btnCalculateY.setText("计算 Y 坐标");
btnCalculateY.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnCalculateYActionPerformed(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()
.addGap(37, 37, 37)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(lblXCoordinate)
.addComponent(lblYCoordinate))
.addGap(29, 29, 29)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(txtXCoordinate)
.addComponent(txtYCoordinate, javax.swing.GroupLayout.DEFAULT_SIZE, 165, Short.MAX_VALUE)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addComponent(btnCalculateY)
.addGap(30, 30, 30)))
.addContainerGap(131, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(70, 70, 70)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(lblXCoordinate)
.addComponent(txtXCoordinate, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(24, 24, 24)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(lblYCoordinate)
.addComponent(txtYCoordinate, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(28, 28, 28)
.addComponent(btnCalculateY)
.addContainerGap(103, Short.MAX_VALUE))
);
pack();
}// /editor-fold
private void btnCalculateYActionPerformed(java.awt.event.ActionEvent evt) {
this.txtYCoordinate.setText(this.calculateY() + "");
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) "
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(XYJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(XYJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(XYJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(XYJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
///editor-fold
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new XYJFrame().setVisible(true);
}
});
}
private void iniCoordinate() {
// 转折点 X 坐标
dbXCoordinate = new double[] { 0, 0.1, 0.3, 0.5, 1 };
// 转折点 Y 坐标
dbYCoordinate = new double[] { 0, 0.4, 0.7, 0.85, 1 };
}
// 计算 Y 坐标
private double calculateY() {
double xCoordinate = Double.parseDouble(this.txtXCoordinate.getText());
int xPos = getXPositon(xCoordinate);
return xPos == -1 ? -1 : (dbYCoordinate[xPos] * xCoordinate) / dbXCoordinate[xPos];
}
// 得到输入的 X 值位置,确定比率
private int getXPositon(double xCoordinate) {
for(int i=0; i dbXCoordinate.length; i++) {
if(xCoordinate = dbXCoordinate[i]) {
return i;
}
}
return -1;
}
private double[] dbXCoordinate = new double[5];
private double[] dbYCoordinate = new double[5];
private double[] rate = new double[5];
// Variables declaration - do not modify
private javax.swing.JButton btnCalculateY;
private javax.swing.JLabel lblXCoordinate;
private javax.swing.JLabel lblYCoordinate;
private javax.swing.JTextField txtXCoordinate;
private javax.swing.JTextField txtYCoordinate;
// End of variables declaration
}
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