3 references to IsHandleNull
PresentationCore (3)
System\Windows\Input\MouseDevice.cs (1)
2102
if (source != null && source.CompositionTarget != null && !source.
IsHandleNull
)
System\Windows\Input\Stylus\Wisp\WispLogic.cs (1)
2929
if (source != null && source.CompositionTarget != null && !source.
IsHandleNull
)
System\Windows\Input\Stylus\Wisp\WispStylusDevice.cs (1)
1536
hwndSource == null || hwndSource.
IsHandleNull
)