SetValue 指令

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SetValue( <Boolean>, <0|1> )

Sets the state of a boolean / check box : 1 = true, 0 = false

范例： If b is a boolean, SetValue(b,1) sets the boolean b as true.

SetValue( <Object>, <Object> )

LetA be the first and B the second object. If A is a free object or a Point restricted to Path or Region, its value is set to current value of B (i.e. A doesn't change value if B is changed afterwards).

范例： If f is a function, SetValue(f, RandomElement({cos(x), 3x+2, ln(x)})) defines, at random, f as being one of the functions proposed in the list.

SetValue( <List>, <Number>, <Object> )

Let n be the <Number>. The command SetValue sets the n-th element of a free list to the current value of the object. Number n can be at most 1 + length of L.

SetValue( <drop-down list>, <Number n > )

Set n as the index of the selected element in the drop-down list.