S2Ler

bool isLidClosed(void)
{
  bool isClosed = false;
  io_registry_entry_t     rootDomain;
  mach_port_t             masterPort;
  CFTypeRef               clamShellStateRef = NULL;
  
  // Retrieve the IOKit's master port so a notification port can be created
  IOReturn ioReturn = IOMasterPort(MACH_PORT_NULL, &masterPort);

S2Ler

#import "AirPrintingViewController.h"
 
@implementation AirPrintingViewController
 
-(void)printItem {
 
    NSString *path = [[NSBundle mainBundle] pathForResource:@"demo" ofType:@"png"];
    NSData *dataFromPath = [NSData dataWithContentsOfFile:path];
 
    UIPrintInteractionController *printController = [UIPrintInteractionController sharedPrintController];