help.java

IIR带通滤波器设计,提供交互界面,JAVA编写,VJ编译

import com.ms.wfc.app.*;
import com.ms.wfc.core.*;
import com.ms.wfc.ui.*;
import com.ms.wfc.html.*;

/**
 * This class can take a variable number of parameters on the command
 * line. Program execution begins with the main() method. The class
 * constructor is not invoked unless an object of type 'help'
 * created in the main() method.
 */
public class help extends Form
{
	public help()
	{
		super();

		// Required for Visual J++ Form Designer support
		initForm();		

		// TODO: Add any constructor code after initForm call
	}

	/**
	 * help overrides dispose so it can clean up the
	 * component list.
	 */
	public void dispose()
	{
		super.dispose();
		components.dispose();
	}

	/**
	 * NOTE: The following code is required by the Visual J++ form
	 * designer.  It can be modified using the form editor.  Do not
	 * modify it using the code editor.
	 */
	Container components = new Container();
	GroupBox groupBox1 = new GroupBox();
	Button button1 = new Button();
	Edit edit1 = new Edit();

	private void initForm()
	{
		// NOTE:  This form is storing resource information in an
		// external file.  Do not modify the string parameter to any
		// resources.getObject() function call. For example, do not
		// modify "foo1_location" in the following line of code
		// even if the name of the Foo object changes: 
		//   foo1.setLocation((Point)resources.getObject("foo1_location"));

		IResourceManager resources = new ResourceManager(this, "help");
		groupBox1.setLocation(new Point(8, 0));
		groupBox1.setSize(new Point(280, 176));
		groupBox1.setTabIndex(0);
		groupBox1.setTabStop(false);
		groupBox1.setText("");

		button1.setLocation(new Point(216, 184));
		button1.setSize(new Point(72, 24));
		button1.setTabIndex(1);
		button1.setText("&OK");
		button1.setDialogResult(DialogResult.OK);

		this.setText("help");
		this.setAcceptButton(button1);
		this.setAutoScaleBaseSize(new Point(6, 12));
		this.setBorderStyle(FormBorderStyle.FIXED_DIALOG);
		this.setClientSize(new Point(294, 215));
		this.setHelpButton(true);
		this.setIcon((Icon)resources.getObject("this_icon"));
		this.setMaximizeBox(false);
		this.setMinimizeBox(false);
		this.setStartPosition(FormStartPosition.CENTER_SCREEN);

		edit1.setBackColor(Color.INFO);
		edit1.setForeColor(Color.DESKTOP);
		edit1.setLocation(new Point(8, 16));
		edit1.setSize(new Point(264, 152));
		edit1.setTabIndex(0);
		edit1.setText("Design a second-order IIR bandpass filter with a center frequency at 0.7π and a 3-dB bandwidth of 0.15π.Plot its gain response.");
		edit1.setMultiline(true);
		edit1.setReadOnly(true);
		edit1.setScrollBars(ScrollBars.VERTICAL);

		this.setNewControls(new Control[] {
							button1, 
							groupBox1});
		groupBox1.setNewControls(new Control[] {
								 edit1});
	}

	/**
	 * The main entry point for the application. 
	 *
	 * @param args Array of parameters passed to the application
	 * via the command line.
	 */
	public static void main(String args[])
	{
		Application.run(new help());
	}
}