GanttView.QueryAllowedTaskEditAction Event
Occurs when an end user moves the mouse to a Gantt node (on MouseEnter) and allows you to display available interactive editing actions. This is a routed event.
Namespace: DevExpress.Xpf.Gantt
Assembly: DevExpress.Xpf.Gantt.v21.2.dll
NuGet Package: DevExpress.Wpf.Gantt
Declaration
Event Data
The QueryAllowedTaskEditAction event's data class is QueryAllowedTaskEditActionEventArgs. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| AllowTaskFinishDateMove | Specifies whether an end user can change the task’s finish date by resizing the Gantt task. |
| AllowTaskMove | Specifies whether an end user can change the task’s start date by dragging the Gantt task. |
| AllowTaskProgressMove | Specifies whether an end user can change the task’s progress by moving the progress bar’s right border. |
| Handled | Gets or sets a value that indicates the present state of the event handling for a routed event as it travels the route. Inherited from RoutedEventArgs. |
| Node | Gets the currently processed task. |
| OriginalSource | Gets the original reporting source as determined by pure hit testing, before any possible Source adjustment by a parent class. Inherited from RoutedEventArgs. |
| RoutedEvent | Gets or sets the RoutedEvent associated with this RoutedEventArgs instance. Inherited from RoutedEventArgs. |
| Source | Gets or sets a reference to the object that raised the event. Inherited from RoutedEventArgs. |
| VisibleConnectorThumbKind | Gets or sets a value that identifies which of the connector thumbs are visible to an end user. |
The event data class exposes the following methods:
| Method | Description |
|---|---|
| InvokeEventHandler(Delegate, Object) | When overridden in a derived class, provides a way to invoke event handlers in a type-specific way, which can increase efficiency over the base implementation. Inherited from RoutedEventArgs. |
| OnSetSource(Object) | When overridden in a derived class, provides a notification callback entry point whenever the value of the Source property of an instance changes. Inherited from RoutedEventArgs. |
Remarks
When an end user moves the mouse to Gantt node, the GanttControl changes the cursor type and displays task thumbs that allow end users to understand which interactive actions are available.
The Interactive Editing topic describes the availability of interactive editing actions. Use the QueryAllowedTaskEditAction event to control the availability of interactive editing actions for each item individually.