NAME
XtPopdown, XtCallbackPopdown - unmap a pop-up
SYNTAX
void
XtPopdown(Widget popup_shell);
void
XtCallbackPopdown(Widget w, XtPointer client_data, XtPointer
call_data);
void
MenuPopdown(String shell_name);
ARGUMENTS
- call_data
- Specifies the callback data, which is not used by this
procedure.
- client_data
- Specifies a pointer to the XtPopdownID
structure.
- popup_shell
- Specifies the widget shell to pop down.
- shell_name
- Specifies the name of the widget shell to pop down.
- w
- Specifies the widget.
DESCRIPTION
The
XtPopdown function performs the following:
- •
- Calls XtCheckSubclass to ensure popup_shell is a
subclass of Shell.
- •
- Checks that popup_shell is currently popped_up; otherwise,
it generates an error.
- •
- Unmaps popup_shell's window.
- •
- If popup_shell's grab_kind is either
XtGrabNonexclusive or XtGrabExclusive, it calls
XtRemoveGrab.
- •
- Sets pop-up shell's popped_up field to False.
- •
- Calls the callback procedures on the shell's
popdown_callback list.
The
XtCallbackPopdown function casts the client data parameter to an
XtPopdownID pointer:
typedef struct {
Widget shell_widget;
Widget enable_widget;
} XtPopdownIDRec, *XtPopdownID;
The shell_widget is the pop-up shell to pop down, and the enable_widget is the
widget that was used to pop it up.
XtCallbackPopdown calls
XtPopdown with the specified shell_widget
and then calls
XtSetSensitive to resensitize the enable_widget.
If a shell name is not given,
MenuPopdown calls
XtPopdown with the
widget for which the translation is specified. If a shell_name is specified in
the translation table,
MenuPopdown tries to find the shell by looking
up the widget tree starting at the parent of the widget in which it is
invoked. If it finds a shell with the specified name in the pop-up children of
that parent, it pops down the shell; otherwise, it moves up the parent chain
as needed. If
MenuPopdown gets to the application top-level shell
widget and cannot find a matching shell, it generates an error.
SEE ALSO
XtCreatePopupShell(3), XtPopup(3)
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface