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- .NH 2
- Dialog Widget
- .LP
- .XS
- Dialog Widget
- .XE
- .IN "Dialog widget" "" "@DEF@"
- .Ds 0
- .TA 2.0i
- .ta 2.0i
- .sp
- Application Header file <X11/Xaw/Dialog.h>
- .IN "Dialog.h" ""
- Class Header file <X11/Xaw/DialogP.h>
- .IN "DialogP.h" ""
- Class dialogWidgetClass
- .IN "dialogWidgetClass" ""
- Class Name Dialog
- .IN "Dialog widget" "class name"
- Superclass Form
- .sp
- .De
- .LP
- The Dialog widget implements a commonly used interaction semantic to
- prompt for auxiliary input from a user. For example, you can use a
- Dialog widget when an application requires a small piece of information,
- such as a filename, from the user. A Dialog widget, which is simply a
- special case of the Form widget, provides a convenient way to create a
- preconfigured form.
- .LP
- The typical Dialog widget contains three areas. The first line
- contains a description of the function of the Dialog widget, for
- example, the string \fIFilename:\fP. The second line contains an area
- into which the user types input. The third line can contain buttons
- that let the user confirm or cancel the Dialog input. Any of these
- areas may be omitted by the application.
- .NH 3
- Resources
- .LP
- When creating a Dialog widget instance, the following resources are
- retrieved from the argument list or the resource database:
- .IN "Dialog widget" "resources"
- .ps 9
- .nr PS 9
- .vs 11
- .nr VS 11
- .TS H
- lw(1i) lw(1i) lw(1i) lw(.5i) lw(2i).
- _
- .sp 3p
- .TB
- Name Class Type Notes Default Value
- .sp 3p
- _
- .TH
- .R
- .sp 3p
- accelerators Accelerators AcceleratorTable NULL
- ancestorSensitive AncestorSensitive Boolean D True
- background Background Pixel XtDefaultBackground
- backgroundPixmap Pixmap Pixmap XtUnspecifiedPixmap
- borderColor BorderColor Pixel XtDefaultForeground
- borderPixmap Pixmap Pixmap XtUnspecifiedPixmap
- borderWidth BorderWidth Dimension 1
- children ReadOnly WidgetList R NULL
- colormap Colormap Colormap Parent's Colormap
- defaultDistance Thickness int 4
- depth Depth int C Parent's Depth
- destroyCallback Callback XtCallbackList NULL
- height Height Dimension A Enough space to contain all children
- icon Icon Bitmap None
- label Label String "label"
- mappedWhenManaged MappedWhenManaged Boolean True
- numChildren ReadOnly Cardinal R 0
- screen Screen Screen R Parent's Screen
- sensitive Sensitive Boolean True
- translations Translations TranslationTable NULL
- value Value String no value widget
- width Width Dimension A Enough space to contain all children
- x Position Position 0
- y Position Position 0
- .sp 3p
- _
- .TE
- .ps 11
- .nr PS 11
- .vs 13
- .nr VS 13
- .Ac
- .As
- .Bg
- .Gp
- .Bc
- .Bp
- .Bw
- .Ch
- .Cm
- .Dd
- .Dp
- .Dc
- .Hw
- .IP \fBicon\fP 1.5i
- A pixmap image to be displayed immediately to the left of the
- Dialog widget's label.
- .IP \fBlabel\fP 1.5i
- A Latin1 string to be displayed at the top of the Dialog widget.
- .Mm
- .Nc
- .Sc
- .Se
- .Tr
- .IP \fBvalue\fP 1.5i
- An initial value for the string field that the user will enter text
- into. By default, no text entry field is available to the user.
- Specifying an initial value for \fBvalue\fP activates the text entry
- field. If string input is desired, but no initial value is to be
- specified then set this resource to "" (empty string).
- .Xy
- .NH 3
- Constraint Resources
- .LP
- .IN "Dialog widget" "constraint resources"
- Each child of the Dialog widget may request special layout resources
- be applied to it. These \fIconstraint\fP resources allow the Dialog
- widget's children to specify individual layout requirements.
- .LP
- .ps 9
- .nr PS 9
- .vs 11
- .nr VS 11
- .TS H
- lw(1i) lw(1i) lw(1i) lw(.5i) lw(2i).
- _
- .sp 3p
- .TB
- Name Class Type Notes Default Value
- .sp 3p
- _
- .TH
- .R
- .sp 3p
- bottom Edge XawEdgeType XawRubber
- fromHoriz Widget Widget NULL (left edge of Dialog)
- fromVert Widget Widget NULL (top edge of Dialog)
- horizDistance Thickness int \fBdefaultDistance\fP resource
- left Edge XawEdgeType XawRubber
- .IN "XawEdgeType" ""
- resizable Boolean Boolean FALSE
- right Edge XawEdgeType XawRubber
- .IN "XawRubber" ""
- top Edge XawEdgeType XawRubber
- vertDistance Thickness int \fBdefaultDistance\fP resource
- .sp 3p
- _
- .TE
- .ps 11
- .nr PS 11
- .vs 13
- .nr VS 13
- .Bt
- .Fh
- .Hd
- .Rl
- .NH 3
- Layout Semantics
- .IN "Dialog widget" "layout semantics"
- .LP
- .Lt Dialog
- .LP
- .ps 9
- .nr PS 9
- .vs 11
- .nr VS 11
- .TS H
- lw(1.5i) lw(1i) lw(3i).
- _
- .sp 3p
- .TB
- Edge Type Resource Name Description
- .sp 3p
- _
- .TH
- .R
- .sp 3p
- XawChainBottom ChainBottom Edge remains a fixed distance from bottom of Dialog
- .IN "XawChainBottom" ""
- XawChainLeft ChainLeft Edge remains a fixed distance from left of Dialog
- .IN "XawChainLeft" ""
- XawChainRight ChainRight Edge remains a fixed distance from right of Dialog
- .IN "XawChainRight" ""
- XawChainTop ChainTop Edge remains a fixed distance from top of Dialog
- .IN "XawChainTop" ""
- XawRubber Rubber Edges will move a proportional distance
- .IN "XawRubber" ""
- .sp 3p
- _
- .TE
- .ps 11
- .nr PS 11
- .vs 13
- .nr VS 13
- .NH 4
- Example
- .LP
- If you wish to force the Dialog to never resize one or more of its children
- then set \fBleft\fP and \fBright\fP to \fBXawChainLeft\fP and
- \fBtop\fP and \fBbottom\fP to \fBXawChainTop\fP. This will cause
- the child to remain a fixed distance from the top and left
- edges of the Dialog, and to never resize.
- .NH 4
- Special Considerations
- .IN "Dialog widget" "special considerations"
- .LP
- The Dialog widget automatically sets the \fBtop\fP and \fBbottom\fP
- resources for all Children that are subclasses of the Command widget,
- as well as the widget children that are used to contain the \fBlabel\fP,
- \fBvalue\fP, and \fBicon\fP. This policy allows the buttons at the
- bottom of the Dialog to interact correctly with the predefined children,
- and makes it possible for a client to simply create and manage a new
- Command button without having to specify its constraints.
- .LP
- The Dialog will also set \fBfromLeft\fP to the last button in the
- .IN "fromLeft" ""
- Dialog for each new button added to the Dialog widget.
- .LP
- The automatically added constraints cannot be overridden, as they are
- policy decisions of the Dialog widget. If a more flexible Dialog is
- desired, the application is free to use the Form widget to create its
- own Dialog policy.
- .NH 3
- Automatically Created Children.
- .IN "Dialog widget" "automatically created children"
- .LP
- The Dialog uses Label widgets to contain the \fBlabel\fP and \fBicon\fP.
- These widgets are named \fIlabel\fP and \fIicon\fP respectively. The
- Dialog \fBvalue\fP is contained in an AsciiText widget whose name is
- \fIvalue\fP. Using \fBXtNameToWidget\fP the application can change
- .IN "XtNameToWidget" ""
- those resources associated with each of these widgets that are not
- available through the Dialog widget itself.
- .LP
- .NH 3
- Convenience Routines
- .LP
- To return the character string in the text field, use
- .PN XawDialogGetValueString .
- .IN "XawDialogGetValueString" "" "@DEF@"
- .FD 0
- String XawDialogGetValueString(\fIw\fP)
- .br
- Widget \fIw\fP;
- .FN
- .IP \fIw\fP 1i
- Specifies the Dialog widget.
- .LP
- This function returns a copy of the value string of the Dialog
- widget. This string is allocated by the AsciiText widget and will
- remain valid and unchanged until another call to
- \fBXawDialogGetValueString\fP or an \fBXtGetValues\fP call on the
- \fBvalue\fP widget, when the string will be automatically freed, and
- a new string is returned. This string may be freed earlier by calling
- the function \fBXawAsciiSourceFreeString\fP.
- .IN "XawAsciiSourceFreeString" ""
- .LP
- .sp
- To add a new button to the Dialog widget use
- \fBXawDialogAddButton\fP.
- .IN "XawDialogAddButton" "" "@DEF@"
- .FD 0
- void XawDialogAddButton(\fIw\fP, \fIname\fP, \fIfunc\fP, \fIclient_data\fP)
- .br
- Widget \fIw\fP;
- .br
- String \fIname\fP;
- .br
- XtCallbackProc \fIfunc\fP;
- .br
- XtPointer \fIclient_data\fP;
- .FN
- .IP \fIw\fP 1i
- Specifies the Dialog widget.
- .IP \fIname\fP 1i
- Specifies the name of the new Command button to be added to the Dialog.
- .IP \fIfunc\fP 1i
- Specifies a callback function to be called when this button is activated. If
- NULL is specified then no callback is added.
- .IP \fIclient_data\fP 1i
- Specifies the client_data to be passed to the \fIfunc\fP.
- .LP
- This function is merely a shorthand for the code sequence:
- .sp
- .ps 9
- .nr PS 9
- .Ds 0
- .TA 1i 2i
- .ta 1i 2i
- {
- Widget button = XtCreateManagedWidget(name, commandWidgetClass, w, NULL, ZERO);
- XtAddCallback(button, XtNcallback, func, client_data);
- }
- .De
- .ps 11
- .nr PS 11
- .sp
-