The mathematical expression component displays 2-D math expressions passed from another embedded component. It also provides editing functionality for entering math expressions.

The math expression component returns the value of its contents as a string of MathML elements. To convert this into a Maple expression, use the MathML[ImportModified] command.

The mathematical expression component is customized by setting options in the Mathematical Expression context panel. To display the options in the context panel, select the embedded component. Actions are associated with components using routines in the DocumentTools package. For more information, see the Math Expression Component Example on this page.

The Name property is used to reference the math expression component when using the routines from the DocumentTools package.

The following table describes the control and use of the mathematical expression component options.

An x in the Get column indicates that the option can be read, that is, retrieved by using the DocumentTools[GetProperty] tool.

An x in the Set column indicates that the option can be written, that is, set by using the DocumentTools[SetProperty] tool.

autofit 

Specifies whether to automatically resize the Math Expression component to fit its contents.  By default, the value is false.

editable

Specifies whether the mathematical expression component is editable. By default, the value is true.

expression 

The contents of the Math Expression component (MathContainer) as a Maple expression. The usual simplification rules are applied to the expression. For example, retrieving the expression from a MathContainer into which 3*4 has been entered will return 12. To obtain the contents exactly as they were entered, use InertForm[FromMathContainer] or the value property.

fillcolor

Specifies the background color of the component. The color can be given by RGB values (a list of three integers between 0 and 255) or a string representing a color name, for example, [255,0,0] or “Red”. The default value is [255,255,255] which corresponds to white.

minimumpixelheight 

The minimum height of the mathematical expression region in pixels. Used with autofit=true. By default, the value is 200.

minimumpixelwidth 

The minimum width of the mathematical expression region in pixels. Used with autofit=true. By default, the value is 300.

pixelheight 

The height of the mathematical expression region in pixels. By default, the value is 200.

pixelwidth 

The width of the mathematical expression region in pixels. By default, the value is 300.

scrolldown

Specifies whether to allow automatic scrolling to the bottom of the Math Expression window to make new results visible, when the window size is restricted and the scroll bar is visible.

showborders

Specifies if the border of the component is visible. By default, the value is true.

type 

The type of the component. This returns "MathContainer".

value 

The contents in the component in MathML. Note that since the content is in MathML, use of DocumentTools[Do] should either retrieve the value unparsed (i.e. %%ComponentName(value)) or use the expression property.

visible 

Specifies if the component is visible. By default, the value is true.

These properties can be accessed programmatically. You can access the contents of the MathContainer, for example, using expr:= DocumentTools:-GetProperty(ComponentName,expression); as demonstrated in the example.

Click the component.

In the Mathematical Expression context panel, clear the check box Editable.

with(DocumentTools):

SetProperty("MathContainer0", value, (Int(parse(GetProperty("ListBox0", value)), x) = int(parse(GetProperty("ListBox0", value)), x)));

GetProperty("MathContainer0",expression);

$\∫\frac{1}{2}\cos \left(x\right)\ⅆx\=\frac{1}{2}\sin \left(x\right)$

MathML[ImportModified](GetProperty("MathContainer0",value));

$\∫\left({\sin \left(x\right)}^2-\cos \left(2x\right)\right)\ⅆx\=-\frac{1}{2}\sin \left(x\right)\cos \left(x\right)\+\frac{1}{2}x-\frac{1}{2}\sin \left(2x\right)$