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Version 1.9 Build 1556

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guientry.scalar - Function

	Package	display
	Module	widgets
	Tool	guientry

Make a widget for a scalar entry

Synopsis
scalar(parent, value, default, options, allowunset, editable, hlp)

Description
Constructs a widget for the entry of scalar values. The widget can determine the type of the first entry (integer, double or complex) and ensure that the type doesn't change. If neither the value nor the default are set AND allowunset is false then the options argument can be used to set the value that will actually be used as the initial value.

The allowed formats for user input are:

• A scalar (e.g. 1.3245)
• The name of Glish variable or function that evaluates to a scalar.

Arguments

parent		Parent of the menu
		Allowed:	Tk frame
value		Value to insert on start
		Allowed:	String or unset
default		Default value used to determine type of GUI
		Allowed:	String
options		options
		Allowed:	Glish value
		Default:	''
allowunset		Allow unset values
		Allowed:	Boolean
		Default:	T
editable		Is the entry editable by the user
		Allowed:	Boolean
		Default:	T
hlp		Popup help string
		Allowed:	String
		Default:	Unset

Returns
guientry widget

Example

include 'guientry.g'   
f := dws.frame();
ge := dws.guientry()
sangle := ge.scalar(f, value=pi/2);
sfloat := ge.scalar(f, options=0.0);
sint := ge.scalar(f, options=0);