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NSMatrix selections
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NSMatrix selections


  • Subject: NSMatrix selections
  • From: Dave Riggle <email@hidden>
  • Date: Sat, 16 Aug 2003 11:12:47 -0700

I'm a complete Cocoa newbie. I'm building an iPhoto like app. From reading the archives, it sounds like other people have been doing the same thing.

I have my own subclass of NSImageCell inside an NSMatrix inside an NSScrollView inside an NSWindow. I have a controller object that is a delegate for the window, and it "renews" the matrix when the window size changes. That part is working nicely. In Interface Builder I instantiated my controller, linked the window delegate, scroll view and matrix to to my controller. I also set a few options for my cells and matrix. That's all I did in IB.

My problem is: I can't get selection to work. I'm using the NSImageFrameGrayBezel frame style with List selection mode. The matrix always has the first cell selected when I load it. If I click cells that are partially shown, the matrix scrolls up to show them, so I know clicks are getting through, but the cells don't get selected. If I hit the page down key, a random cell gets selected and then the matrix scrolls down a page. What's going on?

Any tips or code snippets from other people building apps like mine would be greatly appreciated!

Dave
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