Provides a set of methods for determining the parent and child components of a control.

For a list of all members of this type, see IVisualTipExtender Members.

Remarks

This interface enables you to add VisualTips support to custom controls which do not already provide it.

There are two steps to adding VisualTips support to a custom control. First, create a custom type which implements IVisualTipExtender. Second, invoke SetExtender, passing the System.Type of the custom control and an instance of the type which implements IVisualTipExtender.

The methods of IVisualTipExtender are:

• GetChildAtPoint returns the child component which exists at a specified set of coordinates. VisualTips calls this method repeatedly while the mouse is moved over the control to determine which tooltip should be displayed when the mouse stops.
• GetParent returns the parent component of a given child component.
• GetChildTypes returns an array the types of child components for which the control may display tooltips.

Example

The standard .NET ToolBar control is already supported by VisualTips. However, if you were to implement it manually, your code might look something like this:

[C#]

private class ToolBarExtender : IVisualTipExtender
{
    public object GetChildAtPoint(Control control, int x, int y)
    {
        ToolBar toolbar = control as ToolBar;
        
        foreach (ToolBarButton button in toolbar.Buttons)
        {
            if (button.Rectangle.Contains(x, y))
                return button;
        }
        
        return null;
    }
    
    public object GetParent(object component)
    {
        return (component as ToolBarButton).Parent;
    }
    
    public Type [] GetChildTypes()
    {
        return new Type [] { typeof(ToolBarButton) };
    }
}

Requirements

Namespace: Skybound.VisualTips

Assembly: Skybound.VisualTips (in Skybound.VisualTips.dll)

See Also

IVisualTipExtender Members | Skybound.VisualTips Namespace

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