May 2008
Intermediate to advanced
464 pages
8h 13m
English
A sheet is simply an NSWindow instance that is attached to another window. The sheet comes down over the window, and the window stops getting events until the sheet is dismissed. Typically, you will compose a sheet as an offscreen window in your nib file.
NSApplication has several methods that make sheets possible:
// Start a sheet - (void)beginSheet:(NSWindow *)sheet modalForWindow:(NSWindow *)docWindow modalDelegate:(id)modalDelegate didEndSelector:(SEL)didEndSelector contextInfo:(void *)contextInfo; // End the sheet - (void)endSheet:(NSWindow *)sheet returnCode:(int)returnCode;
Besides the sheet window and the window to which it is attached, you supply a modal delegate, a selector, and a pointer when you start the sheet. The ...