On Apr 21, 2012, at 3:14 AM, Ken Thomases wrote:
> On Apr 20, 2012, at 1:32 PM, vinayak pai wrote:
>
>> Yes. I am facing the same problem. I am updating the menu in
>> performSelectorOnMainThread. If the menu is kept open without any
>> event then there is menu refreshing issue ie. sometimes some items
>> will be shown twice. When I move the mouse over items then it will
>> update. But, when the menu is open and mouse is still then the menu
>> won't update. Is there a way to update the menu while it's open
>> without any mouse movement like System WiFi menu?
>
> I'm not sure. If menus are shown twice, then I suspect a synchronization bug
> in your code.
>
> You can try posting an application-defined event (NSEvent of type
> NSApplicationDefined) to the event queue after you've changed the menus.
(Resending this, since it didn't appear to go through before)
Yes. As I answered before, you have to get things scheduled in the right
runloop mode. But once you do, it's quite easy:
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
NSStatusItem *item = [[[NSStatusBar systemStatusBar]
statusItemWithLength:24] retain];
[item setImage:[NSImage imageNamed:NSImageNameApplicationIcon]];
[item setEnabled:YES];
NSMenu *m = [[NSMenu alloc] init];
[item setMenu:m];
NSTimer *t = [NSTimer timerWithTimeInterval:1.0 target:self
selector:@selector(updateMenu:) userInfo:m repeats:YES];
[[NSRunLoop currentRunLoop] addTimer:t forMode:NSDefaultRunLoopMode];
[[NSRunLoop currentRunLoop] addTimer:t forMode:NSEventTrackingRunLoopMode];
}
- (void)updateMenu:(NSTimer *)t {
NSMenu *m = [t userInfo];
NSString *s = [[NSDate date] description];
NSMenuItem *i = [[NSMenuItem alloc] initWithTitle:s action:nil
keyEquivalent:@""];
[m addItem:i];
[m update];
}
Run that, open the poorly-iconed status item, and don't touch your mouse.
Yes, this code is terrible and leaks and all that. It's just to illustrate the
point.
Dave
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