HP Prime Graphing Wireless Calculator Uživatelský manuál stáhnout pdf (Strana 657)

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ISKEYDOWN

Syntax: ISKEYDOWN(key_id);

Returns true (non-zero) if the key whose key_id is provided is currently pressed, and false (0) if it is not.

MOUSE

Syntax: MOUSE[(index)]

Returns two lists describing the current location of each potential pointer (or empty lists if the pointers are

not used). The output is {x , y, original x, original y, type} where type is 0 (for new), 1 (for completed), 2 (for

drag), 3 (for stretch), 4 (for rotate), and 5 (for long click).

The optional parameter index is the nth element that would have been returned—x, y, original x, etc.—had

the parameter been omitted (or –1 if no pointer activity had occurred).

MSGBOX

Syntax: MSGBOX(expression or string [ ,ok_cancel?]);

Displays a message box with the value of the given expression or string.

If ok_cancel? is true, displays the and buttons, otherwise only displays the

button. Default value for ok_cancel is false.

Returns true (non-zero) if the user taps , false (0) if the user presses .

EXPORT AREACALC()

BEGIN

LOCAL radius;

INPUT(radius, "Radius of Circle","r = ","Enter radius",1);

MSGBOX("The area is " +π*radius^2);

END;

If the user enters 10 for the radius, the message box shows this:

Program commands 609

1 2 ... 652 653 654 655 656 657 658 659 660 661 662 ... 700 701

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HP Prime Graphing Wireless Calculator Uživatelský manuál Strana 657

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