Apple

As was probably obvious to everyone but me, I discovered that I did not need to save the NSSavePanel even though it is required to change the filetype and extension.

The solution was to utilize the window in which the accessory panel is embedded. That is, with sender as the radio button array in the accessory view,

- (IBAction)setSaveType:(id)sender

{

NSSavePanel *sp = (NSSavePanel*)[sender window];

NSInteger col = [saveTypes selectedColumn];

isPDF = (col == 0) ? YES : NO;

NSString *fname = filename;

if (isPDF)

fname = [fname stringByAppendingString:@".pdf"];

else

fname = [fname stringByAppendingString:@".png"];

[sp setNameFieldStringValue:fname];

}