ExternalHeaderPresenter Class
Represents a control that renders an external header (image and label) for a bar control that can't render them itself, such as BarComboBox.
public class ExternalHeaderPresenter : Control- Inheritance:
- object Visual UIElement FrameworkElement Control object
Constructors
ExternalHeaderPresenter()
Initializes an instance of the class.
public ExternalHeaderPresenter()Properties
CanIndentContent
Indicates whether the image and label can be indented if present.
public bool CanIndentContent { get; set; }Property Value
- bool:
trueif the image and label can be indented if present; otherwise,false. The default value isfalse.
CanShowImage
Indicates whether an image should be displayed if present.
public bool CanShowImage { get; set; }Property Value
- bool:
trueif an image should be displayed if present; otherwise,false. The default value istrue.
HasImage
Indicates whether the source element has an image.
public bool HasImage { get; }Property Value
- bool:
trueif the source element has an image; otherwise,false.
HasLabel
Indicates whether the source element has a label.
public bool HasLabel { get; }Property Value
- bool:
trueif the source element has a label; otherwise,false.
Label
The text label to display.
[Localizability(LocalizationCategory.Label)]
public string? Label { get; set; }Property Value
SmallImageSource
The ImageSource for a small image, generally 16x16 size.
public ImageSource? SmallImageSource { get; set; }Property Value
- ImageSource:
The ImageSource for a small image.
SourceElement
The source element.
Methods
GetLayoutClip(Size?)
Returns a geometry for a clipping mask. The mask applies if the layout system attempts to arrange an element that is larger than the available display space.
protected override Geometry? GetLayoutClip(Size? layoutSlotSize)| Parameter | Type | Description |
|---|---|---|
| layoutSlotSize | Size | The size of the part of the element that does visual presentation. |
Returns
- Geometry:
The clipping geometry.
MeasureOverride(Size)
Called to remeasure a control.
protected override Size MeasureOverride(Size constraint)| Parameter | Type | Description |
|---|---|---|
| constraint | Size | The maximum size that the method can return. |
Returns
- Size:
The size of the control, up to the maximum specified by
constraint.
OnToolTipClosing(ToolTipEventArgs)
Invoked whenever an unhandled ToolTipClosing routed event reaches this class in its route. Implement this method to add class handling for this event.
protected override void OnToolTipClosing(ToolTipEventArgs e)| Parameter | Type | Description |
|---|---|---|
| e | ToolTipEventArgs | Provides data about the event. |
OnToolTipOpening(ToolTipEventArgs)
Invoked whenever the ToolTipOpening routed event reaches this class in its route. Implement this method to add class handling for this event.
protected override void OnToolTipOpening(ToolTipEventArgs e)| Parameter | Type | Description |
|---|---|---|
| e | ToolTipEventArgs | Provides data about the event. |
Fields
CanIndentContentProperty
Defines the CanIndentContent property.
public static readonly DependencyProperty CanIndentContentPropertyCanShowImageProperty
Defines the CanShowImage property.
public static readonly DependencyProperty CanShowImagePropertyHasImageProperty
Defines the HasImage property.
public static readonly DependencyProperty HasImagePropertyHasLabelProperty
Defines the HasLabel property.
public static readonly DependencyProperty HasLabelPropertyLabelProperty
Defines the Label property.
public static readonly DependencyProperty LabelPropertySmallImageSourceProperty
Defines the SmallImageSource property.
public static readonly DependencyProperty SmallImageSourcePropertySourceElementProperty
Defines the SourceElement property.
public static readonly DependencyProperty SourceElementProperty