Custom Widget

[ere]

After reading some forum entries related to custom widgets I've tried one easy as well:

public class BText
extends org.eclipse.swt.widgets.Text
{
}

Afterwards I've tried to add this widge in "Window - Preferences - Designer - SWT - Custom Controls" but I doens't show up.

What did I miss? Do I need to deploy this class somewhere?

TIA
Rene

[Eric Clayberg]

What did I miss?

You need to define a public two-argument constructor within the class.

[ere]

Eric, I did (soory I didn't paste the whole class in my initial message)

here we go with the *complete* class:

public class BText
extends org.eclipse.swt.widgets.Text
{
private String capitalization;

public BText(Composite parent, int style)
{
super(parent, style);
}

public String getCapitalization()
{
return capitalization;
}
public void setCapitalization(String capitalization)
{
this.capitalization = capitalization;
}
}

and it doesn't show up

[Eric Clayberg]

here we go with the *complete* class

Is that the complete class? I didn't see any imports or package definition.

I tried your class and it worked fine on my end. Here is is showing up in the selection dialog...



...and here it is in use within a test window (note that the custom "capitalization" property shows up)...



If you can't see the class on your end, I would check your classpath to make sure that the custom widget class is visible to the window you want to use it in.

Where do you have it located relative to your window class?

Are you able to select it using the Choose Bean command within the SWT Designer editor itself?

[ere]

you're right, I guess it was to early, here you go with package and import:

package test.uiControls;

import org.eclipse.swt.widgets.Composite;

public class BText
extends org.eclipse.swt.widgets.Text
{
private String capitalization;

public BText(Composite parent, int style)
{
super(parent, style);
}

public String getCapitalization()
{
return capitalization;
}
public void setCapitalization(String capitalization)
{
this.capitalization = capitalization;
}
}

If I change the source of a class to use this BText it works and shows my custom attribute but either "choose bean" nor the preference page can find it. As it is in the same project as where I try to use this widget in an example class (test.plugin.hello.HelloEditor01) I guess it should be on the classpath - right?

[Eric Clayberg]

If I change the source of a class to use this BText it works and shows my custom attribute but either "choose bean" nor the preference page can find it. As it is in the same project as where I try to use this widget in an example class (test.plugin.hello.HelloEditor01) I guess it should be on the classpath - right?

Do any widgets show up in the Choose Bean dialog? If so, which ones? Can you send a screen shot of what you see there?

[ere]

solved

problem was, that after upgrading from Eclipse 3.0.0 to 3.0.1 I had
ECLIPSE_HOME/plugins/org.eclipse.swt.win32_3.0.0/ws/win32/swt.jar AND ECLIPSE_HOME/plugins/org.eclipse.swt.win32_3.0.1/ws/win32/swt.jar on my classpath.

After disabling the 3.0.0 plugin everything works fine

Thanks to Eric