Search notes:

System.Windows.Media.Visual (abstract class)

System.Windows.Media.Visual derives from System.Windows.DependencyObject.
In WPF, Visual provides rendering, hit testing, coordinate transformation and bounding box calculations.
Apparently, Visual comes close to the concept of HWND.
Visual connects the managed part of WPF with the unmanaged milcore (DirectX).

Index

Fatal error: Uncaught PDOException: SQLSTATE[HY000]: General error: 8 attempt to write a readonly database in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php:78 Stack trace: #0 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(78): PDOStatement->execute(Array) #1 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(30): insert_webrequest_('/notes/Microsof...', 1759382823, '216.73.216.42', 'Mozilla/5.0 App...', NULL) #2 /home/httpd/vhosts/renenyffenegger.ch/httpsdocs/notes/Microsoft/dot-net/namespaces-classes/System/Windows/Media/Visual(40): insert_webrequest() #3 {main} thrown in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php on line 78