问未填充NSTableView

EN

@interface AppDelegate : NSObject <NSApplicationDelegate>
{
    IBOutlet NSMenu *statusMenu;
    IBOutlet NSButton *button;
    IBOutlet NSWindow *menuWindow;
    IBOutlet NSTableView *proTable;
    NSArray *listOfWindows;
    IBOutlet NSArrayController *arrayController;
    AppDelegate *mainMenu;
    NSWorkspace  *workSpace;

    NSStatusItem *statusItem;
}

@property (assign) IBOutlet NSWindow *window;

-(IBAction)loadConfig:(id)sender;
@end

#import "AppDelegate.h"
@implementation AppDelegate
@synthesize window = _window;


- (void) awakeFromNib
{   
[[NSDistributedNotificationCenter defaultCenter] addObserver:self
                                                                         selector:@selector(loadMenu:) 
                                                              name:@"WhiteBox"
                                                      object:nil];
[self addStatusItem];

 //[proTable setDataSource:self];

listOfWindows = [[NSWorkspace sharedWorkspace] runningApplications];
NSLog(@"index %@", listOfWindows);

int y = 0;
y = [listOfWindows count];
NSLog(@"y = %d", y);

[proTable setAllowsMultipleSelection:YES];   
    }

-(void)applicationWillTerminate
{
    NSLog(@"Will Terminate");
}


- (void)applicationDidFinishLaunching:(NSNotification *)aNotification
{

}


-(void)applicationDidResignActive:(NSNotification *)notification
{
    NSLog(@"Resign Active");

}

-(void) addStatusItem
{
    //Create a variable length status item from the system statusBar
    statusItem = [[NSStatusBar systemStatusBar] statusItemWithLength:NSVariableStatusItemLength];
    [statusItem retain];

//Set a Title for it
[statusItem setTitle:@"Status Item"];

    //Set an Image and an alternate image
    //[statusItem setImage:[NSImage imageNamed:@"lnc"]];
    //[statusItem setAlternateImage: [NSImage imageNamed:@"status"]];

    //Add a Tool Tip
    [statusItem setToolTip:@"Status Item Tooltip"];

    //Choose to highlight the item when clicked
    [statusItem setHighlightMode:YES];

    //To Trigger a method on click use the following two lines of code
[statusItem setMenu:statusMenu];
    //[statusItem setAction:@selector(loadMenu:)];

}

-(IBAction)loadConfig:(id)sender
{

    if(! [menuWindow isVisible] )
    {
        [menuWindow makeKeyAndOrderFront:sender];
    } else {
        [menuWindow performClose:sender];
    }

}


- (NSInteger)numberOfRowsInTableView:(NSTableView *)tableView
{
    return [listOfWindows count];
}
- (id)tableView:(NSTableView *)tableView 
objectValueForTableColumn:(NSTableColumn *)tableColumn 
            row:(NSInteger)row
{
    return [listOfWindows objectAtIndex:row];
}



@end