Control Events

Requires: Base Development System

View the class hierarchy.

EventDescription
Drag EndedGenerated after a drag and drop operation completes. Details
Drag EnterGenerated when there is a drag operation pending and the cursor enters the bounds of a control. Details
Drag LeaveGenerated when there is a drag operation pending and the mouse leaves a control that can accept a drag, or if a user cancels a drag and drop operation when hovering over a control. Details
Drag OverGenerated when there is a drag and drop operation pending, as the mouse moves over a control. Details
Drag Source UpdateGenerated when the mouse moves or a key state changes during a drag and drop operation. Details
DropGenerated when the user lifts the mouse when hovering over a control when there is a drag and drop operation pending. Details
Key DownGenerated on a control that has keyboard focus. If a key press matches a keyboard shortcut in the VI menu, such as Ctrl-C or Ctrl-V, LabVIEW does not generate a Key Down event, regardless of whether the menu item is enabled. Details
Key Down?Generated on a control that has keyboard focus. If a key press matches a keyboard shortcut in the VI menu, such as Ctrl-C or Ctrl-V, LabVIEW does not generate a Key Down event, regardless of whether the menu item is enabled. Details
Key RepeatGenerated at regular intervals when the user presses and holds a key in a front panel control. Details
Key Repeat?Generated when the user presses and holds a key in a front panel control. Details
Key UpGenerated when the user releases a key on the keyboard in a specific control on the front panel. Details
Mouse DownGenerated when you click the mouse button on a specific control. Details
Mouse Down?Generated when you click the mouse button on a specific control. Details
Mouse EnterGenerated when the cursor enters the bounds of the front panel object. Details
Mouse LeaveGenerated when the cursor leaves the bounds of the front panel object. Details
Mouse MoveGenerated when you move the mouse over a control. Details
Mouse UpGenerated when you release the mouse button on a specific control. LabVIEW does not generate this event if a shortcut menu appears when you click the mouse button. Details
Mouse WheelGenerated when you scroll the mouse wheel over a control. Details
Shortcut Menu Activation?Generated when the user right-clicks a control to display the shortcut menu. Details
Shortcut Menu DismissedGenerated when the user dismisses a shortcut menu, either by pressing escape or clicking somewhere outside the menu bounds. This is a notify event. Details
Shortcut Menu Selection (App)Generated when the user selects an application item from the shortcut menu of a control. Use the Shortcut Menu Selection (User) event to generate an event when the user selects a user-defined menu item. This event is posted after the built-in shortcut menu item is processed by LabVIEW. Details
Shortcut Menu Selection (User)Generated when the user selects a user-defined item from the shortcut menu. Use the Shortcut Menu Selection (App) event to generate an event when the user selects an application item from the shortcut menu. Details
Shortcut Menu Selection? (App)Generated when the user selects an application item from the shortcut menu. This event is posted before the application item is processed by LabVIEW. Details
Value ChangeGenerated when the user changes the value of a control. You must read the terminal of a latched Boolean control in its Value Change event case. Details