If sketch entities and annotations are attached to a view and the view moves, the annotations and sketch geometry also move. If the view is deleted, so are these sketch entities and annotations. Sketch entities are typically created in a drawing view to define a section line or detail area. If the parent view is not active, you cannot edit the sketch entities.

Sheet vs. View Focus
There are times when users may not want annotations to be associated with a drawing view. An example would be a set of standard notes. These notes should not be associated or move with any drawing view.

While in dynamic sheet activation mode, the Lock Sheet Focus function can be used to ensure the sketch geometry or the annotations are not tied to a drawing view. To return to dynamic mode, select Unlock Sheet Focus.

If the manual view activation mode is currently selected, then simply double-click in any open space on the sheet outside of a drawing view boundary.

Dynamic vs. Manual Activation
There are two different modes that can be used for view and sheet activation: dynamic and manual. Dynamic mode looks at the cursor location and automatically selects the view closest to the cursor. The Lock View Focus and Lock Sheet Focus functions can be used to temporarily set the view or sheet focus respectively. To return to dynamic activation mode, use Unlock View Focus or Unlock Sheet Focus, depending on what mode is currently active. To activate these functions, select the view or sheet in an open area, press the right mouse button, and then select the desired option. The view or sheet can be selected in the graphics window or in the FeatureManager design tree. The advantage of dynamic view selection is the view is active when the cursor is over it, which automatically associates any sketch entities and annotations you create to that view.

Dynamic view activation is active by default. To set the manual Drawing View activation mode, de-select the option Dynamic View activation from the Tools/Options/Drawings settings dialog box.

You are in the manual activation mode when dynamic view activation is turned off. This means you have to tell SolidWorks when a view should be active. The advantage of manual mode is you do not have to watch to make sure the desired view is active, and you can sketch outside the view boundary without accidentally activating another view. If you have view boundaries crossing one another, manual activation ensures that you associate the sketch entities or annotations to the correct view or to the drawing sheet.

When using manual activation mode, double-clicking inside the view boundary in an empty area can activate a drawing view. To activate the sheet, double-click in any empty area on the sheet that is not inside a view boundary.

Conclusion
Each user may have a preference when it comes to selecting or activating a drawing view. SolidWorks offers various methods that can be adapted to fit your preference or the situation. In most cases, the selection and activation can be handled automatically. When a specific view or sheet needs to be selected, you can use the manual methods. But understanding the differences lets you make an informed choice as to whether to use manual or dynamic selection modes.