Tick/Untick check box/radio button/toggle button from the keyboard

I'm looking for a way to uncheck the selected check box/radio button/toggle button using the keyboard in Windows 7, preferably in XP and Vista as well. I know you can use the Space bar to toggle the state of the currently selected button, but is there a way to set a control to ticked or unticked without risk of toggling it if is is already in the desired state?

3 Answers

Use the Tab key or the mouse to select the check box and then press space bar key

To check/uncheck a checkbox (tested in Windows 7):

+ to check
- to clear

There is no way to control this for sure.

There are underlying controls that have default behaviors in Windows forms. Factors such as if these controls are a part of a control group will also have an affect on the outcome.

Also, there is no way to know how a developer handles certain events based on control selection and changes.