macOS Modal Alert Panels?

[satyam90]

I am using Cocoa with Obj C on Mac OSX Tiger.
I would like to have Modal alerts in my application. For that purpose I am using NSAlert and associated method beginSheetModalForWindow:modalDelegate:didEndSelector:contextInfo: to create alert dialogs.
But by just declaring

NSAlert *alertDialog = [[[NSAlert alloc] init] autorelease];

itself is giving the following error:

error: parse error before '*' token

But I am able to use other alert sheets like NSRunAlertPanel, NSBeginAlertSheet etc.
What might be the error in this case and what is the probable solution for this?

 

[kainjow]

The only thing I can think of is NSAlert was new in 10.3 so if you're targeting 10.2 it won't be available.

 

[kpua]

Or you haven't imported the proper headers.