Control QML Type

This property holds the height available to the contentItem after deducting vertical padding from the height of the control.

See also Control Layout, padding, topPadding, and bottomPadding.

This property holds the width available to the contentItem after deducting horizontal padding from the width of the control.

See also Control Layout, padding, leftPadding, and rightPadding.

This property holds the background item.

  Button {
      id: control
      text: qsTr("Button")
      background: Rectangle {
          implicitWidth: 100
          implicitHeight: 40
          opacity: enabled ? 1 : 0.3
          color: control.down ? "#d0d0d0" : "#e0e0e0"
      }
  }

Note: If the background item has no explicit size specified, it automatically follows the control's size. In most cases, there is no need to specify width or height for a background item.

Note: Most controls use the implicit size of the background item to calculate the implicit size of the control itself. If you replace the background item with a custom one, you should also consider providing a sensible implicit size for it (unless it is an item like Image which has its own implicit size).

See also Control Layout.

This property holds the bottom padding.

See also Control Layout, padding, topPadding, and availableHeight.

This property holds the visual content item.

Note: The content item is automatically resized to fit within the padding of the control.

Note: Most controls use the implicit size of the content item to calculate the implicit size of the control itself. If you replace the content item with a custom one, you should also consider providing a sensible implicit size for it (unless it is an item like Text which has its own implicit size).

  Button {
      id: control
      text: qsTr("Button")
      contentItem: Label {
          text: control.text
          font: control.font
          verticalAlignment: Text.AlignVCenter
      }
  }

See also Control Layout and padding.

This property determines the way the control accepts focus.

This property holds the reason of the last focus change.

Note: This property does not indicate whether the control has active focus, but the reason why the control either gained or lost focus.

See also visualFocus and Item::activeFocus.

This property holds the font currently set for the control.

This property describes the control's requested font. The font is used by the control's style when rendering standard components, and is available as a means to ensure that custom controls can maintain consistency with the native platform's native look and feel. It's common that different platforms, or different styles, define different fonts for an application.

The default font depends on the system environment. ApplicationWindow maintains a system/theme font which serves as a default for all controls. There may also be special font defaults for certain types of controls. You can also set the default font for controls by passing a custom font to QGuiApplication::setFont(), before loading the QML. Finally, the font is matched against Qt's font database to find the best match.

Control propagates explicit font properties from parent to children. If you change a specific property on a control's font, that property propagates to all of the control's children, overriding any system defaults for that property.

  Page {
      font.family: "Courier"

      Column {
          Label {
              text: qsTr("This will use Courier...")
          }

          Switch {
              text: qsTr("... and so will this")
          }
      }
  }

This property determines whether the control accepts hover events. The default value is false.

See also hovered.

This property holds whether the control is hovered.

See also hoverEnabled.

This property holds the left padding.

See also Control Layout, padding, rightPadding, and availableWidth.

This property holds the locale of the control. It contains locale specific properties for formatting data and numbers. Unless a special locale has been set, this is either the parent's locale or the default locale.

Control propagates explicit locale properties from parent to children. If you change a specific property on a control's locale, that property propagates to all of the control's children, overriding any system defaults for that property.

See also mirrored and LayoutMirroring.

This property holds whether the control is mirrored.

This property is provided for convenience. A control is considered mirrored when its visual layout direction is right-to-left; that is, when using a right-to-left locale or when LayoutMirroring.enabled is true.

See also locale, LayoutMirroring, and Right-to-left User Interfaces.

This property holds the default padding.

Padding adds a space between each edge of the content item and the background item, effectively controlling the size of the content item. To specify a padding value for a specific edge of the control, set its relevant property:

• leftPadding
• rightPadding
• topPadding
• bottomPadding

See also Control Layout, availableWidth, availableHeight, topPadding, leftPadding, rightPadding, and bottomPadding.

This property holds the right padding.

See also Control Layout, padding, leftPadding, and availableWidth.

This property holds the spacing.

Spacing is useful for controls that have multiple or repetitive building blocks. For example, some styles use spacing to determine the distance between the text and indicator of CheckBox. Spacing is not enforced by Control, so each style may interpret it differently, and some may ignore it altogether.

This property holds the top padding.

See also Control Layout, padding, bottomPadding, and availableHeight.

This property holds whether the control has visual focus. This property is true when the control has active focus and the focus reason is either Qt.TabFocusReason, Qt.BacktabFocusReason, or Qt.ShortcutFocusReason.

In general, for visualizing key focus, this property is preferred over Item::activeFocus. This ensures that key focus is only visualized when interacting with keys - not when interacting via touch or mouse.

See also focusReason and Item::activeFocus.

This property determines whether the control handles wheel events. The default value is false.

Note: Care must be taken when enabling wheel events for controls within scrollable items such as Flickable, as the control will consume the events and hence interrupt scrolling of the Flickable.