DrawingControl.QueryCancelGroup Event
| Visio Automation Reference |
Occurs before the application groups a selection of shapes in response to a user action in the interface. If any event handler returns True, the operation is canceled. .
Version Information
Version Added: Visio 2007
Syntax
Private Sub expression_QueryCancelGroup(ByVal Selection As [IVSELECTION])
expression A variable that represents a DrawingControl object.
Parameters
| Name | Required/Optional | Data Type | Description |
|---|---|---|---|
| Selection | Required | [IVSELECTION] | The selection of shapes that is going to be grouped. |
Remarks
A Microsoft Office Visio instance fires QueryCancelGroup after the user has directed the instance to group a selection of shapes.
- If any event handler returns True (cancel), the instance will fire GroupCanceled and not group the shapes.
- If all handlers return False (don't cancel), the grouping will be performed.
In some cases, such as when a shape that has a ForeignType property of visTypeMetafile is grouped, the initial shape will be deleted and replaced with new shapes. In such cases, the Visio instance will subsequently fire BeforeSelectionDelete and BeforeShapeDelete events before grouping the shapes.
While a Visio instance is firing a query or cancel event, it will respond to inquiries from client code but will refuse to perform operations. Client code can show forms or message boxes while responding to a query or cancel event.
If you're using Microsoft Visual Basic or Visual Basic for Applications (VBA), the syntax in this topic describes a common, efficient way to handle events.
If you want to create your own Event objects, use the Add or AddAdvise method. To create an Event object that runs an add-on, use the Add method as it applies to the EventList collection. To create an Event object that receives notification, use the AddAdvise method. To find an event code for the event you want to create, see Event codes.
See Also