Animations when showing sheet (Cocoa)

Question

Hi,

I had a question when showing sheets in Cocoa and particularly, the animations. How do I show a sheet (plain NSWindow/NSPanel) with and without the nice animation? It does this automatically for NSSavePanel/NSOpenPanel, but I can't get the nice animation working for a standard NSWindow/NSPanel sheet I create in Interface Builder. (When I say animation, click on the "Show Cookies" button in the 'Security' tab in the Safari preferences)

Thanks, Rebecca.

Answer 1

You cannot control whether there is an animation or not: sheets are always shown with an animation. The only thing that can change is the style of animation:

• If the sheet is smaller than the window, it appears to slide down
• If the sheet is larger than the window, it grows (in a trapeze shape) while sliding down.

You can make some tests, by resizing the window to be smaller or larger than the sheet.