---
name: "SoXtInputFocus"
section: "3iv"
platform: "linux"
package: "inventor-doc"
version: "2.1.6+ds-2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/SoXtInputFocus"
---

# SoXtInputFocus(3iv)

reports input focus change events

## NAME

SoXtInputFocus — reports input focus change events

## INHERITS FROM

SoXtDevice \> SoXtInputFocus

## SYNOPSIS

**#include \<Inventor/Xt/devices/SoXtInputFocus.h\>**

**#define SO\_XT\_ALL\_FOCUS\_EVENTS (EnterWindowMask \| LeaveWindowMask)**

Methods from class SoXtInputFocus:

	**SoXtInputFocus(EventMask mask = SO\_XT\_ALL\_FOCUS\_EVENTS)**\
 	**~SoXtInputFocus()**

Methods from class SoXtDevice:

**virtual void**	**enable(Widget w, XtEventHandler f, XtPointer data, Window win = NULL)**\
 **virtual void**	**disable(Widget w, XtEventHandler f, XtPointer data)**\
 **virtual const SoEvent \***	**translateEvent(XAnyEvent \*xevent)**\
 **void**	**setWindowSize(const SbVec2s &size)**\
 **const SbVec2s &**	**getWindowSize() const**

## DESCRIPTION

**This class reports input focus change events (i.e. when the cursor crosses into or out of the window). There are no input focus events in Inventor, so this always returns NULL when asked to translate events.** **When this class is registered on a render area, the render area will receive X input focus change events. (This class is extensively employed by the viewer classes.)**

## METHODS

	**SoXtInputFocus(EventMask mask = SO\_XT\_ALL\_FOCUS\_EVENTS)**\
 	**~SoXtInputFocus()**\
 Constructor and destructor. To the constructor, pass which input focus events you are interested in as a bitwise OR of the following values:

EnterWindowMask — Input focus entered the window

LeaveWindowMask — Input focus left the window

Or simply pass the defined value SO\_XT\_ALL\_FOCUS\_EVENTS for all input focus events.

## SEE ALSO

**SoXtDevice**