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Product Edition
Expander triangle
set the top of object to numberOfPixels
Desktop, Web and Server
Platform Support
MacOS,Mac OS X,Windows,Linux
None required
Specifies how far an object's top edge is from the top of the window or screen.

set the top of card button 1 to 100
set the top of message window to (the bottom of this stack + 2)

Additional Comments
Expander triangle

Use the top property to change the vertical placement of a control or window.


The top of an object is an integer. A negative integer indicates that the position is above the top of the screen or card (and therefore cannot be seen).

A stack's top is the distance in pixels from the top edge of the screen to the top edge of the window's content area.

A card's or control's top is the distance in pixels from the top edge of the card to the top edge of the card or control.


The top of a stack is in absolute (screen) coordinates. The top of a card is always zero; setting the top of a card does not cause a script error, but it has no effect. The top of a group or control is in relative (window) coordinates.

Changing the top of an object shifts it to the new position without resizing it. To change an object's height, set its height or rectangle property.

The height property of an object is equal to its bottom minus its top.

Cross-platform note: When setting the top of a window on a Mac OS or OS X system, be sure to allow 20 pixels at the top of the screen for the Mac OSmenu bar.

User Comments
Expander triangle