DiagramCommandsBase.RegisterHandlers(Action<IHandlersRegistrator>, Boolean) Method
Allows you to override the default commands.
Namespace: DevExpress.Diagram.Core
Assembly: DevExpress.Diagram.v19.1.Core.dll
Declaration
public ICommandHandlers RegisterHandlers(
Action<IHandlersRegistrator> registerHandlers,
bool updateCommandsOnRequerySuggested = false
)Parameters
| Name | Type | Description |
|---|---|---|
| registerHandlers | Action<DevExpress.Diagram.Core.IHandlersRegistrator> | An action delegate that registers a custom method to be called when executing the specified command. |
Optional Parameters
| Name | Type | Default | Description |
|---|---|---|---|
| updateCommandsOnRequerySuggested | Boolean | False | true, to update the commands UI after each diagram action; otherwise, false. By default, false. |
Returns
| Type | Description |
|---|---|
| DevExpress.Diagram.Core.ICommandHandlers | A collection of custom command handlers. |
Remarks
The example below illustrates how to disable the standard DiagramCommandsBase.CopyCommand.
diagram.Commands.RegisterHandlers(x => x.RegisterHandlerCore(DevExpress.Xpf.Diagram.DiagramCommands.CopyCommand,
(param, diagram, getArgs, baseHandler) => { }, (param, diagram, baseCanExecute) => false));
The following example illustrates how to modify this command.
diagram.Commands.RegisterHandlers(x => x.RegisterHandlerCore(DevExpress.Xpf.Diagram.DiagramCommands.CopyCommand,
(param, diagram, getArgs, baseHandler) => { baseHandler(); MessageBox.Show("Items copied"); }, (param, diagram, baseCanExecute) => baseCanExecute()));
See Also