Button Controls

Button is a clickable control that starts an action, or opens or closes a popup. A button usually has a text label but it can also contain an icon.

Button is a very suitable control when a popup or dialog needs to perform an action. The most common examples are Apply, Cancel, Save, Close and Help.

Recommendations:

• The button's text should be a verb describing the action, or a noun matching the title of the popup that will be opened.

• Don't use a button to set state. Switch is more suitable for that.

• Use the default font unless you have UI guidelines specifying otherwise.

• If the text is localized, consider the influence of a longer text on the layout.

See also Button and AbstractButton

CheckBox is used to build multi-selection option lists. Any number of options can be selected, including none, but the options should not be mutually exclusive.

Use a single CheckBox for a yes/no choice, such as when you have to accept the terms of service agreement in a form.

For a single yes/no choice, it is also possible to use a switch. If the choice concerns an option, it is best to use a CheckBox. If it concerns action to be taken, a switch is recommended.

When options can be grouped, you can use a partially checked CheckBox to represent the whole group. Use the checkbox's partially checked state when a user selects some, but not all, sub-items in the group.

The three availables check states are: checked, partially checked and unchecked.

The checkable options are often listed vertically.

Recommendations:

• The checkbox label should be a statement that the check mark makes true, and that the absence of a check mark makes false.

• The checkbox label should not contain a negative statement.

• Use the default font, unless you have UI guidelines specifying otherwise.

• If the text is localized, consider the influence of a longer text on the layout.

See also CheckBox

DelayButton is a button that incorporates a delay before triggering an action. This delay prevents accidental presses.

Recommendations:

• Use in touch user interfaces.

• Use for actions that must be triggered with care.

See also Button and AbstractButton

RadioButton is used to select only one option from a set of options. Selecting one option automatically deselects the one selected before.

If there are only two mutually exclusive options, combine them into a single checkbox or a switch.

Recommendations:

• Limit the label text to one line.

• Ensure that a sensible default option is checked.

• List RadioButton options vertically.

• If the text is localized, consider the influence of a longer text on the layout.

• Use the default font, unless you have UI guidelines that specify otherwise.

• Just like with CheckBox, do not make the list too large.

• In order to avoid confusion, do not put two groups of radio buttons next to each other.

See also RadioButton

RoundButton is a clickable control that starts an action, or opens or closes a popup. A round button with a square image icon or one-letter font icon is circular. A circular RoundButton takes less space than a normal Button, and can also be used as a floating action button.

Recommendations:

• Keep labels short and concise.

• If the text is localized, consider the influence of a longer text on the layout.

See also RoundButton

Switch represents a physical switch that allows users to choose between an "on" or "off" state. Use a switch for binary operations that take effect immediately after it has been switched on. For example, a switch to turn WIFI on or off.

Recommendations:

• Keep labels short and concise.

• If the text is localized, consider the influence of a longer text on the layout.

See also Switch

ToolButton is nearly identical to Button, but it has a graphical appearance that makes it more suitable for insertion into a ToolBar.

See also ToolButton

• Qt Quick Controls 2 Guidelines