IXRComboBox::AddDropDownOpenedHandler (Compact 2013)

Article
04/19/2017

3/28/2014

This method attaches a delegate to the DropDownOpened event for this combo box. When the combo box raises the DropDownOpened event, this delegate will be invoked.

Syntax

virtual HRESULT STDMETHODCALLTYPE AddDropDownOpenedHandler(
    IXRDelegate<XREventArgs>* pDelegate
) = 0;

Parameters

pDelegate
[in] IXRDelegate<ArgType, [SenderType]> object that you want to attach to the DropDownOpened event, which is raised when the pop-up part of the combo box opens.

The CreateDelegate function provides an easy way to create this IXRDelegate object.

Return Value

Returns an HRESULT that indicates success or failure.

Returns XR_E_INVALID_OBJECT if pDelegate is not a XAML for Windows Embedded object.

Remarks

Multiple delegates can be attached to the same event.

To remove this delegate from the DropDownOpened event, call IXRComboBox::RemovedDropDownOpenedHandler.

.NET Framework Equivalent

None.

Requirements

Header	XamlRuntime.h
sysgen	SYSGEN_XAML_RUNTIME

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