iDevOS CALC "POSX" Command

Get the X position of an entity.

Description

CALC( x, page, name, "POSX" );    // x = posx("name" on "page")
CALC( x, page, name, a, "POSX" ); // x = posx("name" on "page") + a

This command returns the value x which is the display X-position of the entity name on page and adds a, if provided.

Text, image, draw, touch key and page entities have positions. Other entities, such as variables, do not and will return 0 for their position.

The Y-position of an entity can be obtained using "POSY".

Parameters

x

Calculation result.
Parameter type: entity name of a numeric variable (eg U8, S32, FLT3 etc).

page

Page Name.
Parameter type: Immediate entity name.

name

Entity Name.
Parameter type: Immediate entity name.

a

Input value.
Parameter type: immediate number, or entity name of a numeric variable (eg U8, S32, FLT3 etc).

"POSX"

CALC command operator.
Parameter type: immediate string.

Examples

Example 1

VAR(x, 0, S32);  // Result variable
VAR(y, 0, S32);  // Result variable

PAGE(pg1, stPg);
{
  ...
  POSN(20, 30);
    DRAW(box, 50, 50, stBox); // Create a box
  ...
}
SHOW(pg1);

CALC(x, pg1, box, "POSX"); // x = 20
CALC(y, pg1, box, "POSY"); // y = 30

CALC(x, pg1, box, 10, "POSX"); // x = 30
CALC(y, pg1, box, 10, "POSY"); // y = 40