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Form Editor - CheckBox - Field Help

Form Editor - CheckBox - Field

The CheckBox - Field control provides a checkbox with a text label.

A checkbox is an option button that can be switched on (checked) or off (unchecked). Checkboxes are typically used to represent features in an application that can be enabled or disabled without affecting others.

This control is bound to the boolean field of the table and allows the user to edit its value. The current value of the checkbox is taken right from the field and each change is applied immediately to the field.

Properties

Form Editor - CheckBox - Field Properties

  • Data Mode – Defines how the control value change is applied to the field:
    • Inherited – The mode is inherited from the parent form
    • Add – The value is intended for a new record
    • Edit – The value is assigned to the field, but not committed
    • Edit And Commit – The value is assigned to the field and committed
    • ReadOnly – The value can't be changed
    • Filter – The value is used to filter data by the bound field, the filter must be applied manually using the applyFilters method.
    • Filter And Accept – The value is used to filter data by the bound field, filter applied automatically.
  • Name – The name of the control.
  • Field – The bound field.
  • Text – The text written next to the checkbox.

Widget

  • Auto Fill Background – This property holds whether the control background is filled automatically.
  • Enabled – Defines whether the control is enabled or not.
  • Font – This property holds the font currently set for the control. The default depends on the system environment.
  • Palette – This property describes the control's palette.

The palette is used by the control's style when rendering. The color roles from this palette are combined with the control's default palette to form the control's final palette. The default depends on the system environment and may be different on different platforms. Control propagates explicit palette roles from parent to child. If you assign a brush or color to a specific role on a palette, that role will propagate to all the control's children, overriding any system defaults for that role.

  • Tooltip – The tooltip text.

Layout Item

  • Alignment – Defines both the horizontal and vertical alignment.
  • Expand Horizontal – If ON the control is expanded horizontally.
  • Expand Vertical – If ON the control is expanded vertically.

Size

  • Width – The width of the control.
  • Height – The height of the control (Disabled).

Signals

QCheckBox

  • stateChanged( state ) – This signal is emitted whenever the checkbox's state changes, i.e., whenever the user checks or unchecks it. The state contains the checkbox's new Qt::CheckState.

QAbstractButton

  • clicked( checked ) – This signal is emitted when the button is activated (i.e., pressed down then released while the mouse cursor is inside the button), when the shortcut key is typed, or when click() or animateClick() is called. If the button is checkable, checked is true if the button is checked, or false if the button is unchecked.
  • pressed – This signal is emitted when the button is pressed down.
  • released – This signal is emitted when the button is released.
  • toggled( checked ) – This signal is emitted whenever a checkable button changes its state. This may be the result of a user action, click() or because the checked property is set. The checked argument is true if the button is checked, or false if the button is unchecked.

Form Editor - CheckBox - Field Signals

QWidget

  • customMenuRequested – This signal is emitted when the user has requested a context menu on the control.
  • windowIconChanged – This signal is emitted when the window's icon has changed.
  • windowTitleChanged( title ) – This signal is emitted when the window's title has changed, with the new title as an argument.

QObject

  • created – This signal is emitted after the object is created.
  • destroyed – This signal is emitted immediately before the object is destroyed, and can not be blocked. All the objects's children are destroyed immediately after this signal is emitted.
  • needUpdate – This signal is emitted when the control needs to be updated, for example, on the change of the current record.
  • objectNameChanged( objectName ) – This signal is emitted after the object's name has been changed, with the new object name passed as an argument.