CODEWITHSUNDEEP
cocoacustom-controls
MatterGoal
MatterGoal

Reputation: 16430

NSControl with multiple actions

I'm trying to create a complex custom NSControl that must be able to send more than one message.

For example, on mouse over in must send an action, and on mouse drag in must send another action.

I can't understand how to wire a target to a control and make the control sends whatever message to the target.

In my opinion i have to follow these steps:

  1. Instantiate the NSControl i.e. myControl

  2. set the Target action for myControl for every actions (I don't know how to do that!)

  3. The myControl instance will send action with [NSApp sendAction: [self action] to: [self target] from: self]

Can you help me on step 2? and confirm my steps?

Upvotes: 1

Views: 924

Answers (1)

hamstergene
hamstergene

Reputation: 24439

You need Delegation pattern. Standard Cocoa controls send at most one action, and use delegation for anything additional. IB does not support setting more than one action, so you can't solve step 2.

If delegate is an outlet, you can set it right from IB whenever the delegate is file's owner or also instantiated in this nib, like you would do that for e.g. NSWindow or NSTableView.

Upvotes: 4

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