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A font object represents a typeface, style, weight, and point size that may be associated with text objects.
See IDLgrFont::Init
IDLgrFont::CleanupThe IDLgrFont:: Cleanup procedure method performs all cleanup on the object. IDLgrFont is described above.
NOTE: Cleanup methods are special lifecycle methods , and as such cannot be called outside the context of object destruction. This means that in most cases, you cannot call the Cleanup method directly. There is one exception to this rule: If you write your own subclass of this class, you can call the Cleanup method from within the Cleanup method of the subclass.
IDLgrFont::GetPropertyThe IDLgrFont:: GetProperty procedure method retrieves the value of a property or group of properties for the font. IDLgrFont is described above.
Any keyword to IDLgrFont::Init
Set this keyword to a named variable that will contain an anonymous structure containing the values of all of the properties associated with the state of this object. State information about the object includes things like color, range, tick direction, etc., but not image, vertex, or connectivity data, or user values.
IDLgrFont::InitThe IDLgrFont:: Init function method initializes the font object. IDLgrFont is described above.
NOTE: Init methods are special lifecycle methods , and as such cannot be called outside the context of object creation. This means that in most cases, you cannot call the Init method directly. There is one exception to this rule: If you write your own subclass of this class, you can call the Init method from within the Init method of the subclass.
Obj = OBJ_NEW('IDLgrFont' [, Fontname] )
Result =
Obj
->
[IDLgrFont::]
Init(
[Fontname]
) (
In a subclass' Init method only
.)
A string representing the name of the font to be used. This string should take the form 'fontname*modifier1*modifier2*...*modifierN'. All destination objects support the following fontnames: Helvetica, Courier, Times, Symbol. (These fonts are included with IDL; you may have other fonts installed on your system as well.) Valid modifiers for each of these fonts (except Symbol) are:
To select a Hershey font, use a fontname of the form: 'Hershey*fontnum'.
See Fonts in the IDL Reference Guide for further information and a list of fonts supported by IDL.
Properties retrievable via IDLgrFont::GetProperty
Set this keyword equal to a string containing the name of the font to use. Setting the NAME keyword is the same as supplying the Fontname argument described above.
Set this keyword equal to a floating-point integer representing the point size of the font. The default is 12.0 points.
Set this keyword to a string that indicates the font to use as a substitute if the specified Fontname is not available on the graphics destination. Valid values are only those fonts that are available on all destination objects (the fonts included with IDL). These are: 'Helvetica' (the default), 'Courier', 'Times', 'Symbol', or 'Hershey'.
Set this keyword to an integer value between 1 and 10, indicating the line thickness (measured in device units) to use for the Hershey vector fonts. The default is one pixel.
Set this keyword to a value of any type. You can use this "user value" to contain any information you wish. Remember that if you set the user value equal to a pointer or object reference, you should destroy the pointer or object reference explicitly when destroying the object it is a user value of.
IDLgrFont::SetPropertyThe IDLgrFont:: SetProperty procedure method sets the value of a property or group of properties for the font. IDLgrFont is described above.
Any keyword to IDLgrFont::Init