How to add an GUI component like a Button in a Editor? - eclipse

Question

I'm a beginner in RCP just started building RCP application today.I want to a GUI component like a Button ,comboBox,Checkbox in a Editor .I've managed to add a editor in Extensions and create a class for it.I have written the code to create a label in creatPartControl but it does not work..I get a black window.Should I add the editor in perspective like this
layout.addStandaloneView(Editor.id, true, IPageLayout.TOP,0.7f,
layout.getEditorArea());
layout.addStandaloneView(View.ID, true, IPageLayout.BOTTOM,0.4f,
layout.getEditorArea());
Please help me resolve this issue.If possible please give an eg on how to add a editor and create a label and a button in it.
Thank you for your help in advance
code in my Editor.java content in createPartControl()
parent.setLayout(new GridLayout());
Button b=new Button(parent,SWT.TOGGLE);
b.setText("Hello ");
Label label1 = new Label(parent, SWT.NONE);
label1.setText("First Name");
package com.hello;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorSite;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.part.EditorPart;
public class Editor extends EditorPart {
public static final String ID = "TestApplication.editor3";
public Editor() {
// TODO Auto-generated constructor stub
}
#Override
public void doSave(IProgressMonitor monitor) {
// TODO Auto-generated method stub
}
#Override
public void doSaveAs() {
// TODO Auto-generated method stub
}
#Override
public void init(IEditorSite site, IEditorInput input)
throws PartInitException {
// TODO Auto-generated method stub
}
#Override
public boolean isDirty() {
// TODO Auto-generated method stub
return false;
}
#Override
public boolean isSaveAsAllowed() {
// TODO Auto-generated method stub
return false;
}
#Override
public void createPartControl(Composite parent) {
Label label = new Label(parent, SWT.NONE);
label.setText("sssssss");
}
#Override
public void setFocus() {
// TODO Auto-generated method stub
}
}

Answer 1

You are not correctly initializing the editor and it causes problems when opening the editor. Fill up your init() method like below and see if this helps:
#Override
public void init(IEditorSite site, IEditorInput input)
throws PartInitException {
setSite(site);
setInput(input);
}

Answer 2

It's been a few years since I worked on an Eclipse editor. Here's a screen capture of the editor so you can see I did more than add a Button.
I extended the Viewer class to create the GUI of the editor.
I extended the EditorPart class to create the functionality of the editor.
Because of the kind of editor I was building, I had to create my own version of Canvas and my own version of IDocument.