XtUngrabButton() XtUngrabButton()
Name
XtUngrabButton - cancel a passive button grab.
Synopsis
void XtUngrabButton(widget, button, modifiers)
Widget widget;
unsigned int button;
Modifiers modifiers;
Inputs
widget Specifies the widget in whose window the button was grabbed.
button Specifies the mouse button to be ungrabbed.
modifiers Specifies the modifier keys to be ungrabbed.
Availability
Release 4 and later.
Description
XtUngrabButton() cancels a passive grab of the specified button/modifiers combination. If w is realized, XtUngrabButton() calls XUngrab-
Button() specifying the widget's window as the ungrab window, and passing the remaining arguments unmodified. If the widget is not real-
ized, XtUngrabButton() removes the deferred XtGrabButton() request, if any, for the specified widget, button, and modifiers.
The button argument is one of Button1, Button2, Button3, Button4, Button5, or the constant AnyButton, which is equivalent to issuing the
ungrab request for all possible buttons.
The modifiers argument is a bitwise OR of one or more of the following symbols: ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask,
Mod3Mask, Mod4Mask, Mod5Mask. The special value AnyModifier is also allowed; using it is equivalent to issuing the ungrab button request
for all possible modifier combinations (including no modifiers).
XtUngrabButton() has no effect on an active grab.
See XtGrabButton() for more information on passive button grabs.
Usage
You should rarely need to use passive button grabs. An automatic grab takes place between a ButtonPress event and the corresponding But-
tonRelease event, so an explicit grab is not necessary in some of the most common situations. It may be necessary for some styles of
menus, however.
Note that XtAddGrab() and spring-loaded popups can be used in place of passive grabs in many circumstances. These do not actually issue
any X server grabs.
Structures
The Modifiers type is defined as follows:
typedef unsigned int Modifiers;
See Also
XtAddGrab(1), XtGrabButton(1), XtGrabKey(1), XtGrabKeyboard(1), XtGrabPointer(1), XtUngrabKey(1), XtUngrabKeyboard(1), XtUngrabPointer(1).
Xt - Mouse Handling XtUngrabButton()