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QFocusEvent Class Reference

The QFocusEvent class contains event parameters for widget focus events. More...

#include <qevent.h>

Inherits QEvent.

List of all member functions.

Public Members

QFocusEvent ( Type type )
bool gotFocus () const
bool lostFocus () const
enum Reason { Mouse, Tab, ActiveWindow, Popup, Shortcut, Other }

Static Public Members

Reason reason ()
void setReason ( Reason reason )
void resetReason ()

Detailed Description

The QFocusEvent class contains event parameters for widget focus events.

Focus events are sent to widgets when the keyboard input focus changes. This happens due to either a mouse action, the tab key, the window system, a keyboard shortcut or some other application specific issue. The actual reason for a specific event is obtained by reason() in the appropriate event handler.

The event handlers QWidget::focusInEvent() and QWidget::focusOutEvent() receive focus events.

See also QWidget::setFocus() and QWidget::setFocusPolicy().

Member Type Documentation

QFocusEvent::Reason

Mouse - the focus change happened because of a mouse action
Tab - the focus change happened because of a Tab press (possibly including shift/control)
ActiveWindow - the window system made this window (in)active
Popup - the application opened/closed a popup that grabbed/released focus
Shortcut - the focus change happened because of a keyboard shortcut
Other - any other reason, usually application-specific

See the focus overview for more about focus.

Member Function Documentation

QFocusEvent::QFocusEvent ( Type type )

Constructs a focus event object.

The type parameter must be either QEvent::FocusIn or QEvent::FocusOut.

bool QFocusEvent::gotFocus () const

Returns TRUE if the widget received the text input focus.

bool QFocusEvent::lostFocus () const

Returns TRUE if the widget lost the text input focus.

Reason QFocusEvent::reason () `[static]`

Returns the reason for this focus event.

void QFocusEvent::resetReason () `[static]`

Resets the reason for all future focus events to the value before the last setReason() call.

void QFocusEvent::setReason ( Reason reason ) `[static]`

Sets the reason for all future focus events to reason.