Méthode IUIApplication::OnViewChanged (uiribbon.h)
Appelé lorsque l’état d’une vue change.
Syntaxe
HRESULT OnViewChanged(
[in] UINT32 viewId,
[in] UI_VIEWTYPE typeID,
[in] IUnknown *view,
[in] UI_VIEWVERB verb,
[in] INT32 uReasonCode
);
Paramètres
[in] viewId
Type : UINT32
ID de l’affichage. Seule la valeur 0 est valide.
[in] typeID
Type : UI_VIEWTYPE
Le UI_VIEWTYPE hébergé par l’application.
[in] view
Type : IUnknown*
Pointeur vers l’interface View.
[in] verb
Type : UI_VIEWVERB
UI_VIEWVERB (ou action) effectuée par l’affichage.
[in] uReasonCode
Type : INT32
Non défini.
Valeur retournée
Type : HRESULT
Si cette méthode réussit, elle retourne S_OK. Sinon, elle retourne un code d’erreur HRESULT.
Remarques
Cette notification de rappel est envoyée par l’infrastructure à l’application hôte à chaque changement d’état d’affichage.
Exemples
L’exemple suivant illustre une implémentation de base de la méthode 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;
}
Configuration requise
Client minimal pris en charge | Windows 7 [applications de bureau uniquement] |
Serveur minimal pris en charge | Windows Server 2008 R2 [applications de bureau uniquement] |
Plateforme cible | Windows |
En-tête | uiribbon.h |
DLL | Mshtml.dll |