304 lines
6.3 KiB
Plaintext
304 lines
6.3 KiB
Plaintext
.ds tk X Toolkit
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.ds xT X Toolkit Intrinsics \- C Language Interface
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.ds xI Intrinsics
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.ds xW X Toolkit Athena Widgets \- C Language Interface
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.ds xL Xlib \- C Language X Interface
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.ds xC Inter-Client Communication Conventions Manual
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.ds Rn 3
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.ds Vn 2.2
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.hw XtMake-Geometry-Request XtQuery-Geometry wid-get
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.na
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.de Ds
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.nf
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.\\$1D \\$2 \\$1
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.ft 1
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.ps \\n(PS
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.\".if \\n(VS>=40 .vs \\n(VSu
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.\".if \\n(VS<=39 .vs \\n(VSp
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.de De
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.ce 0
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.if \\n(BD .DF
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.nr BD 0
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.in \\n(OIu
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.if \\n(TM .ls 2
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.sp \\n(DDu
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.fi
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..
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.de FD
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.LP
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.KS
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.TA .5i 3i
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.nf
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.de C{
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.ne 7
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. \" Note End -- doug kraft 3/85
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..
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.ny0
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.TH XtPopup 3Xt "Release 3" "X Version 11" "XT FUNCTIONS"
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.SH NAME
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XtPopup, XtCallbackNone, XtCallbackNonexclusive, XtCallbackExclusive, MenuPopup \- map a pop-up
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.SH SYNTAX
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void XtPopup(\fIpopup_shell\fP, \fIgrab_kind\fP)
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.br
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Widget \fIpopup_shell\fP;
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.br
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XtGrabKind \fIgrab_kind\fP;
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.LP
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void XtCallbackNone(\fIw\fP, \fIclient_data\fP, \fIcall_data\fP)
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.br
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Widget \fIw\fP;
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.br
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XtPointer \fIclient_data\fP;
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.br
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XtPointer \fIcall_data\fP;
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.LP
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void XtCallbackNonexclusive(\fIw\fP, \fIclient_data\fP, \fIcall_data\fP)
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.br
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Widget \fIw\fP;
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.br
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XtPointer \fIclient_data\fP;
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.br
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XtPointer \fIcall_data\fP;
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.LP
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void XtCallbackExclusive(\fIw\fP, \fIclient_data\fP, \fIcall_data\fP)
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.br
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Widget \fIw\fP;
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.br
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XtPointer \fIclient_data\fP;
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.br
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XtPointer \fIcall_data\fP;
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.LP
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void MenuPopup(\fIshell_name\fP)
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.br
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String \fIshell_name\fP;
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.SH ARGUMENTS
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.IP \fIcall_data\fP 1i
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Specifies the callback data,
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which is not used by this procedure.
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.IP \fIclient_data\fP 1i
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Specifies the pop-up shell.
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.IP \fIgrab_kind\fP 1i
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Specifies the way in which user events should be constrained.
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.IP \fIpopup_shell\fP 1i
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Specifies the widget shell\*(Ps.
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.IP \fIw\fP 1i
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Specifies the widget.
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.SH DESCRIPTION
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The
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.ZN XtPopup
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function performs the following:
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.IP \(bu 5
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Calls
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.ZN XtCheckSubclass
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.\".ZN XtCheckSubclass(popup_shell, popupShellWidgetClass)
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to ensure popup_shell is a subclass of
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.ZN Shell .
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.IP \(bu 5
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Generates an error if the shell's popped_up field is already
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.ZN True .
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.IP \(bu 5
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Calls the callback procedures on the shell's popup_callback list.
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.IP \(bu 5
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Sets the shell popped_up field to
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.ZN True ,
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the shell spring_loaded field to
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.ZN False ,
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and the shell grab_kind field from grab_kind.
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.IP \(bu 5
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If the shell's create_popup_child field is non-NULL,
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.ZN XtPopup
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calls it with popup_shell as the parameter.
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.IP \(bu 5
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If grab_kind is either
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.ZN XtGrabNonexclusive
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or
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.ZN XtGrabExclusive ,
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it calls:
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.LP
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.Ds
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XtAddGrab(popup_shell, (grab_kind == XtGrabExclusive), False)
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.De
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.IP \(bu 5
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Calls
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.ZN XtRealizeWidget
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with popup_shell specified.
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.IP \(bu 5
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Calls
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.ZN XMapWindow
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with popup_shell specified.
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.LP
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The
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.ZN XtCallbackNone ,
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.ZN XtCallbackNonexclusive ,
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and
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.ZN XtCallbackExclusive
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functions call
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.ZN XtPopup
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with the shell specified by the client data argument
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and grab_kind set as the name specifies.
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.ZN XtCallbackNone ,
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.ZN XtCallbackNonexclusive ,
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and
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.ZN XtCallbackExclusive
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specify
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.ZN XtGrabNone ,
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.ZN XtGrabNonexclusive ,
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and
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.ZN XtGrabExclusive ,
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respectively.
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Each function then sets the widget that executed the callback list
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to be insensitive by using
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.ZN XtSetSensitive .
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Using these functions in callbacks is not required.
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In particular,
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an application must provide customized code for
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callbacks that create pop-up shells dynamically or that must do more than
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desensitizing the button.
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.LP
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.ZN MenuPopup
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is known to the translation manager,
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which must perform special actions for spring-loaded pop-ups.
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Calls to
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.ZN MenuPopup
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in a translation specification are mapped into calls to a
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nonexported action procedure,
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and the translation manager fills in parameters
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based on the event specified on the left-hand side of a translation.
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.LP
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If
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.ZN MenuPopup
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is invoked on
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.ZN ButtonPress
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(possibly with modifiers),
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the translation manager pops up the shell with grab_kind set to
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.ZN XtGrabExclusive
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and spring_loaded set to
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.ZN True .
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If
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.ZN MenuPopup
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is invoked on
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.ZN EnterWindow
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(possibly with modifiers),
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the translation manager pops up the shell with grab_kind set to
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.ZN XtGrabNonexclusive
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and spring_loaded set to
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.ZN False .
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Otherwise, the translation manager generates an error.
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When the widget is popped up,
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the following actions occur:
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.IP \(bu 5
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Calls
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.ZN XtCheckSubclass
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.\".ZN XtCheckSubclass(popup_shell, popupShellWidgetClass)
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to ensure popup_shell is a subclass of
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.ZN Shell .
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.IP \(bu 5
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Generates an error if the shell's popped_up field is already
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.ZN True .
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.IP \(bu 5
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Calls the callback procedures on the shell's popup_callback list.
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.IP \(bu 5
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Sets the shell popped_up field to
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.ZN True
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and the shell grab_kind and spring_loaded fields appropriately.
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.IP \(bu 5
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If the shell's create_popup_child field is non-NULL,
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it is called with popup_shell as the parameter.
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.IP \(bu 5
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Calls:
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.LP
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.Ds
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XtAddGrab(popup_shell, (grab_kind == XtGrabExclusive), spring_loaded)
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.De
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.IP \(bu 5
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Calls
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.ZN XtRealizeWidget
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with popup_shell specified.
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.IP \(bu 5
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Calls
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.ZN XMapWindow
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with popup_shell specified.
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.LP
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(Note that these actions are the same as those for
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.ZN XtPopup .)
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.ZN MenuPopup
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tries to find the shell by searching the widget tree starting at
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the parent of the widget in which it is invoked.
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If it finds a shell with the specified name in the pop-up children of
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that parent, it pops up the shell with the appropriate parameters.
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Otherwise, it moves up the parent chain as needed.
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If
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.ZN MenuPopup
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gets to the application widget and cannot find a matching shell,
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it generates an error.
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.SH "SEE ALSO"
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XtCreatePopupShell(3Xt),
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XtPopdown(3Xt)
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.br
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\fI\*(xT\fP
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.br
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\fI\*(xL\fP
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