Getting The Location Of A Control Relative To The Entire Screen?
You’re looking for the PointToScreen method: Point location = someControl.PointToScreen(Point.Empty);
location
window.location versus just location
I always use window.location in my code for two principal reasons: It’s a good habit to avoid global variables whenever possible. Using the window. prefix reminds me that the variable is global and that others aren’t. The nature of Javascript’s scoping allows you to override variables set higher up the scope tree. This means that … Read more
iPhone Compass GPS Direction
There is a standard “heading” or “bearing” equation that you can use – if you are at lat1,lon1, and the point you are interested in is at lat2,lon2, then the equation is: heading = atan2( sin(lon2-lon1)*cos(lat2), cos(lat1)*sin(lat2) – sin(lat1)*cos(lat2)*cos(lon2-lon1)) This gives you a bearing in radians, which you can convert to degrees by multiplying by … Read more
How to find your current location with CoreLocation
You can find your location using CoreLocation like this: import CoreLocation: #import <CoreLocation/CoreLocation.h> Declare CLLocationManager: CLLocationManager *locationManager; Initialize the locationManager in viewDidLoad and create a function that can return the current location as an NSString: – (NSString *)deviceLocation { return [NSString stringWithFormat:@”latitude: %f longitude: %f”, locationManager.location.coordinate.latitude, locationManager.location.coordinate.longitude]; } – (void)viewDidLoad { locationManager = [[CLLocationManager alloc] … Read more
How do I get the full path to a Perl script that is executing?
There are a few ways: $0 is the currently executing script as provided by POSIX, relative to the current working directory if the script is at or below the CWD Additionally, cwd(), getcwd() and abs_path() are provided by the Cwd module and tell you where the script is being run from The module FindBin provides … Read more
Where are C/C++ main function’s parameters?
They are compiler magic, and implementation-dependent.
Android Google Maps API V2 Zoom to Current Location
Try this coding: LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); Criteria criteria = new Criteria(); Location location = locationManager.getLastKnownLocation(locationManager.getBestProvider(criteria, false)); if (location != null) { map.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(location.getLatitude(), location.getLongitude()), 13)); CameraPosition cameraPosition = new CameraPosition.Builder() .target(new LatLng(location.getLatitude(), location.getLongitude())) // Sets the center of the map to location user .zoom(17) // Sets the zoom .bearing(90) // Sets the orientation … Read more
location.host vs location.hostname and cross-browser compatibility?
As a little memo: the interactive link anatomy — In short (assuming a location of http://example.org:8888/foo/bar#bang): hostname gives you example.org host gives you example.org:8888
javascript location.hash refreshing in IE
This appears to be a bug with Internet Explorer (tested with 7 and 8). Changing window.location.hash should not result in a reload, and it is a common JavaScript technique to use the hash for maintaining state. If you manually load a page and change the hash using JavaScript it will work. The problem is when … Read more
How to detect country / location of visitor? [duplicate]
NetImpact provide a free API for geolocation lookup by IP, ProgrammableWeb also has a roundup of GeoIP lookup providers. This involves a small amount of latency while your application completes an API call (unless your application can use a non-blocking call) but is the least intrusive manner of detecting a visitor’s country of origin.