| Name | Description | Type | Package | Framework |
| DefaultEditorError | Class | com.sencha.gxt.widget.core.client.form.error | GXT | |
| ElementErrorHandler | A FieldError instance that calls setInnerHTML on a target element. | Class | com.sencha.gxt.widget.core.client.form.error | GXT |
| ErrorHandler | Defines the interface for objects that can display a field's error. | Interface | com.sencha.gxt.widget.core.client.form.error | GXT |
| HasErrorHandler | Interface | com.sencha.gxt.widget.core.client.form.error | GXT | |
| SideErrorHandler | Class | com.sencha.gxt.widget.core.client.form.error | GXT | |
| SideErrorHandler .SideErrorResources | Interface | com.sencha.gxt.widget.core.client.form.error | GXT | |
| SideErrorHandler .SideErrorTooltipAppearance | Marker interface to indicate that we want a slightly different appearance than usual, to indicate that this is an error, and not help text. | Interface | com.sencha.gxt.widget.core.client.form.error | GXT |
| TitleErrorHandler | Class | com.sencha.gxt.widget.core.client.form.error | GXT | |
| ToolTipErrorHandler | Class | com.sencha.gxt.widget.core.client.form.error | GXT | |