Método IUIApplication::OnViewChanged (uiribbon.h)
Se llama cuando cambia el estado de una vista .
Sintaxis
HRESULT OnViewChanged(
[in] UINT32 viewId,
[in] UI_VIEWTYPE typeID,
[in] IUnknown *view,
[in] UI_VIEWVERB verb,
[in] INT32 uReasonCode
);
Parámetros
[in] viewId
Tipo: UINT32
Identificador de la vista. Solo un valor de 0 es válido.
[in] typeID
Tipo: UI_VIEWTYPE
La UI_VIEWTYPE hospedada por la aplicación.
[in] view
Tipo: IUnknown*
Puntero a la interfaz View.
[in] verb
Tipo: UI_VIEWVERB
La UI_VIEWVERB (o acción) realizada por la Vista.
[in] uReasonCode
Tipo: INT32
Sin definir.
Valor devuelto
Tipo: HRESULT
Si este método se realiza correctamente, devuelve S_OK. De lo contrario, devuelve un código de error de HRESULT.
Comentarios
El marco envía esta notificación de devolución de llamada a la aplicación host en cada cambio de estado de vista.
Ejemplos
En el ejemplo siguiente se muestra una implementación básica del método IUIApplication::OnViewChanged .
//
// FUNCTION: OnViewChanged(UINT, UI_VIEWTYPE, IUnknown*, UI_VIEWVERB, INT)
//
// PURPOSE: Called when the state of a View (Ribbon is a view) changes - like created/destroyed/resized.
//
// PARAMETERS:
// viewId - The View identifier.
// typeID - The View type.
// pView - Pointer to the View interface.
// verb - The action performed by the View.
// uReasonCode - Not defined.
//
// COMMENTS:
//
// For this sample, return the same command handler for all commands
// specified in the .xml file.
//
//
STDMETHODIMP CApplication::OnViewChanged(
UINT viewId,
UI_VIEWTYPE typeId,
IUnknown* pView,
UI_VIEWVERB verb,
INT uReasonCode)
{
HRESULT hr = E_NOTIMPL;
// Checks to see if the view that was changed was a Ribbon view.
if (UI_VIEWTYPE_RIBBON == typeId)
{
switch (verb)
{
// The view was newly created.
case UI_VIEWVERB_CREATE:
_cwprintf(L"IUIApplication::OnViewChanged called with verb=CREATE\r\n");
if (NULL == g_pRibbon)
{
// Retrieve and store the IUIRibbon
hr = pView->QueryInterface(&g_pRibbon);
}
break;
// The view was resized.
// In the case of the Ribbon view, the application should call
// GetHeight() to determine the height of the Ribbon.
case UI_VIEWVERB_SIZE:
_cwprintf(L"IUIApplication::OnViewChanged called with verb=SIZE\r\n");
// Call to the framework to determine the height of the Ribbon.
if (NULL != g_pRibbon)
{
UINT uRibbonHeight;
hr = g_pRibbon->GetHeight(&uRibbonHeight);
}
if (!SUCCEEDED(hr))
{
//_cwprintf(L"IUIRibbon::GetHeight() failed with hr=0x%X\r\n", hr);
}
break;
// The view was destroyed.
case UI_VIEWVERB_DESTROY:
//_cwprintf(L"IUIApplication::OnViewChanged called with verb=DESTROY\r\n");
g_pRibbon = NULL;
hr = S_OK;
break;
}
}
return hr;
}
Requisitos
Cliente mínimo compatible | Windows 7 [solo aplicaciones de escritorio] |
Servidor mínimo compatible | Windows Server 2008 R2 [solo aplicaciones de escritorio] |
Plataforma de destino | Windows |
Encabezado | uiribbon.h |
Archivo DLL | Mshtml.dll |