topStack

returns the long name of the topmost stack.

# Metadata

Platforms: desktop, server, mobile OS: mac, windows, linux, ios, android Introduced: 1.0 Security:

# Syntax

the topStack

# Examples

the topStack

set the defaultStack to the topStack

# Description

Use the topStack function to find out which stack is in the current stack.

In most applications, the active window holds the current document, and menu commands operate on the active window. In LiveCode, because of the ability to open stacks in various modes, this is not necessarily the case.

Each open window has a mode associated with it. The topStack is the frontmost stack with the lowest mode.

For example, an editable window has a mode of 1, and a palette has a mode of 4. If several palettes and editable windows are open, the topStack is the frontmost editable stack, although palettes may be in front of it. If all the editable windows are then closed, the frontmost palette becomes the topStack, since there is now no window with a lower mode.

# Tags

windowing,

# See

- **property:** mode, name - **glossary:** current stack, editable window, return, palette - **command:** palette - **object:** stack - **function:** mainStacks - **control structure:** function