24 references to IsValid
PresentationCore (24)
System\Windows\Input\Command\RoutedCommand.cs (3)
120if ((target != null) && !InputElement.IsValid(target)) 156if ((target != null) && !InputElement.IsValid(target)) 302if ((elem != null) && InputElement.IsValid(elem))
System\Windows\Input\FocusChangedEventArgs.cs (2)
28if (oldFocus != null && !InputElement.IsValid(oldFocus)) 31if (newFocus != null && !InputElement.IsValid(newFocus))
System\Windows\Input\InputManager.cs (1)
743if(eventSource == null || !InputElement.IsValid(eventSource as IInputElement))
System\Windows\Input\KeyboardDevice.cs (1)
118if(!InputElement.IsValid(element))
System\Windows\Input\MouseDevice.cs (6)
297if (eltDO != null && !InputElement.IsValid(element)) 544if (relativeTo != null && !InputElement.IsValid(relativeTo)) 1518if (!InputElement.IsValid(mouseOver)) 1522if ((rawMouseOver != null) && !InputElement.IsValid(rawMouseOver)) 1570if (mouseOver != null && !InputElement.IsValid(mouseOver) ) 1639else if (!InputElement.IsValid(rawMouseOver))
System\Windows\Input\Stylus\Pointer\PointerStylusDevice.cs (4)
550if (doStylusCapture != null && !InputElement.IsValid(element)) 706if (relativeTo != null && !InputElement.IsValid(relativeTo)) 909if (!InputElement.IsValid(stylusOver)) 931if (stylusOver != null && !InputElement.IsValid(stylusOver))
System\Windows\Input\Stylus\Wisp\WispStylusDevice.cs (4)
243if (doStylusCapture != null && !InputElement.IsValid(element)) 979if (!InputElement.IsValid(stylusOver)) 1002if (stylusOver != null && !InputElement.IsValid(stylusOver)) 1160if (relativeTo != null && !InputElement.IsValid(relativeTo))
System\Windows\Input\TouchDevice.cs (1)
254if ((element != null) && !InputElement.IsValid(element))
System\Windows\PresentationSource.cs (2)
117if (!InputElement.IsValid(element)) 183if (!InputElement.IsValid(e))