System Variable Entry: CTRLMBUTTON
← Prev | ↑ Chapter | Next → | Index | Symbols
System Variable Entry: CTRLMBUTTON
Name
CTRLMBUTTON
Type
string
Default
varies by session
Read-Only
no
Scope
session; saved in not saved
Description
Middle Button Click: The CTRLMBUTTON system variable turns On or Off the Temporary tracking points entity snap when the middle mouse button (mouse wheel) is used during a command. If CTRLMBUTTON is set to 1 for ON , pressing the middle mouse button during a command runs the TK transparent shortcut and prompts you in the Command line to specify the temporary tracking points. This is the default option. If CTRLMBUTTON is set to 0 for OFf , the system variable turns Off the T…
Compatibility
AutoCAD and BricsCAD. AutoCAD all; BricsCAD V20+.
Source Notes
- AutoCAD: AutoCAD 2026 ENU per-sysvar page (name match; GUID not yet captured)
- BricsCAD: https://help.bricsys.com/en-us/document/system-variable-reference/c/ctrlmbutton-system-variable