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Nikolozi
Nikolozi

Reputation: 2242

How to get mouse cursor not to move while dragging inside a custom NSView?

I have a custom NSView and I want the user to be able to click and drag inside it. NSView of course will receive the mouse drag events and respond appropriately. While the mouse is being dragged I want to make sure that the mouse cursor doesn't move.

I could probably hide the cursor and make it reappear at the same location once the user stops dragging but is there a better way of doing this?

Upvotes: 3

Views: 796

Answers (2)

DouglasHeriot
DouglasHeriot

Reputation: 1704

Nicer solution – use the CGAssociateMouseAndMouseCursorPosition function to enable/disable the cursor from moving.

Your way of just jumping the mouse back can sometimes appear to the user as the mouse moving a little bit, and then jumping back really quickly.

Upvotes: 2

Nikolozi
Nikolozi

Reputation: 2242

Ended up observing kCGEventLeftMouseDragged events and then calling CGWarpMouseCursorPosition to reset the mouse position. The cursor stays put the whole time I'm dragging.

Upvotes: 1

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