NAME

XtCallbackPopdown − callback function to popdown a widget. 

Synopsis

void XtCallbackPopdown(w, client_data, call_data)

    Widget w;
    XtPointer client_data;
    XtPointer call_data;

Inputs

wSpecifies the widget. 

client_data
Specifies a pointer to an XtPopdownID structure. 

call_dataSpecifies the callback data, which is not used by this procedure. 

Description

XtCallbackPopdown() casts is client_data argument to an XtPopdownIDRec *, calls XtPopdown on the widget in the shell_widget field, and then resensitizes the widget in the enable_widget field by calling XtSetSensitive().  XtCallbackPopdown() is a convenience procedure designed to be registered on a widget’s callback list (which is why it has third, unused argument) and used on a shell widget popped up with XtCallbackExclusive(), XtCallbackNone(), or XtCallbackNonexclusive().  The widget to be popped down and the widget that was desensitized when the shell was popped up should be stored into the XtPopdownID structure that is registered with XtCallbackPopdown(). 

Usage

It is also possible to pop down a shell with the XtMenuPopdown action. 

Example

The following code registers XtCallbackPopdown() to popdown the widget pshell when the button ok is pressed.  It assumes that pshell was popped up by XtCallbackExclusive() registered on the widget button. 

XtPopdownIDRec pop_rec;
 pop_rec.shell_widget = pshell;
pop_rec.enable_widget = button;
XtAddCallback(ok, XtNcallback, XtCallbackPopdown, &pop_rec);

Structures

XtCallbackPopdown() expects a XtPopdownID as its client_data argument. 

typedef struct {
    Widget shell_widget;
    Widget enable_widget;
} XtPopdownIDRec, *XtPopdownID;

See Also

XtCallbackExclusive(1), XtCallbackNone(1), XtCallbackNonexclusive(1), XtMenuPopup(1), XtMenuPopdown(1), XtPopdown(1), XtPopup(1), XtSetSensitive(1). 

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