24 references to IsValid
PresentationCore (24)
System\Windows\Input\Command\RoutedCommand.cs (3)
132if ((target != null) && !InputElement.IsValid(target)) 168if ((target != null) && !InputElement.IsValid(target)) 314if ((elem != null) && InputElement.IsValid(elem))
System\Windows\Input\FocusChangedEventArgs.cs (2)
34if (oldFocus != null && !InputElement.IsValid(oldFocus)) 37if (newFocus != null && !InputElement.IsValid(newFocus))
System\Windows\Input\InputManager.cs (1)
757if(eventSource == null || !InputElement.IsValid(eventSource as IInputElement))
System\Windows\Input\KeyboardDevice.cs (1)
144if(!InputElement.IsValid(element))
System\Windows\Input\MouseDevice.cs (6)
332if (eltDO != null && !InputElement.IsValid(element)) 582if (relativeTo != null && !InputElement.IsValid(relativeTo)) 1539if (!InputElement.IsValid(mouseOver)) 1543if ((rawMouseOver != null) && !InputElement.IsValid(rawMouseOver)) 1591if (mouseOver != null && !InputElement.IsValid(mouseOver) ) 1660else if (!InputElement.IsValid(rawMouseOver))
System\Windows\Input\Stylus\Pointer\PointerStylusDevice.cs (4)
575if (doStylusCapture != null && !InputElement.IsValid(element)) 730if (relativeTo != null && !InputElement.IsValid(relativeTo)) 933if (!InputElement.IsValid(stylusOver)) 955if (stylusOver != null && !InputElement.IsValid(stylusOver))
System\Windows\Input\Stylus\Wisp\WispStylusDevice.cs (4)
277if (doStylusCapture != null && !InputElement.IsValid(element)) 1011if (!InputElement.IsValid(stylusOver)) 1034if (stylusOver != null && !InputElement.IsValid(stylusOver)) 1192if (relativeTo != null && !InputElement.IsValid(relativeTo))
System\Windows\Input\TouchDevice.cs (1)
267if ((element != null) && !InputElement.IsValid(element))
System\Windows\PresentationSource.cs (2)
129if (!InputElement.IsValid(element)) 195if (!InputElement.IsValid(e))