在wince中使用C++语言创建Silverlight的VisualState

< TransformGroup>

< ScaleTransform/>

< SkewTransform/>

< RotateTransform/>

< TranslateTransform/>

< /TransformGroup>

< /Rectangle.RenderTransform>

< /Rectangle>

< /Grid>

< /UserControl>

下面，一层层分析，使用本地代码来实现等效的功能：

首先，创建一个IXRVisualStateGroupCollection(即状态组的集合)，并与Grid进行绑定

IXRVisualStateGroupCollection* pVisualStateGroups;

app->CreateObject(IID_IXRVisualStateGroupCollection, &pVisualStateGroups);

LayoutRoot->SetAttachedProperty(L"VisualStateManager.VisualStateGroups", pVisualStateGroups);

创建一个状态组，并将其添加到状态组集合中

IXRVisualStateGroupPtr pGroup;

app->CreateObject(IID_IXRVisualStateGroup,&pGroup);

pGroup->SetName(L"VisualStateGroup");

pVisualStateGroups->Add(pGroup,NULL);

通过状态组下的IXRVisualTransitionCollection来设置通用的切换时间，现在暂定为1秒

IXRVisualTransitionCollectionPtr transitions;

app->CreateObject(IID_IXRVisualTransitionCollection,&transitions);

pGroup->SetTransitions(transitions);

IXRVisualTransitionPtr transtion;

app->CreateObject(IID_IXRVisualTransition,&transtion);

XRDuration duration;

duration.DurationType = duration.DurationType_TimeSpan;

duration.TimeSpan.Ticks = duration.TimeSpan.TicksPerSecond;

transtion->SetGeneratedDuration(&duration);

transitions->Add(transtion,NULL);

创建状态集合，并将新建的状态添加进去

IXRVisualStateCollectionPtr StateCollection;

pGroup->GetStates(&StateCollection);

IXRVisualStatePtr state;

app->CreateObject(IID_IXRVisualState,&state);