ManipulationInertiaStartingEventHandler Delegasikan
Definisi
Penting
Beberapa informasi terkait produk prarilis yang dapat diubah secara signifikan sebelum dirilis. Microsoft tidak memberikan jaminan, tersirat maupun tersurat, sehubungan dengan informasi yang diberikan di sini.
Mewakili metode yang akan menangani peristiwa ManipulationInertiaStarting .
public delegate void ManipulationInertiaStartingEventHandler(Platform::Object ^ sender, ManipulationInertiaStartingRoutedEventArgs ^ e);
[Windows.Foundation.Metadata.ContractVersion(typeof(Microsoft.UI.Xaml.WinUIContract), 65536)]
[Windows.Foundation.Metadata.Guid(1575130813, 28444, 24416, 145, 128, 16, 112, 82, 130, 87, 108)]
public delegate void ManipulationInertiaStartingEventHandler(object sender, ManipulationInertiaStartingRoutedEventArgs e);
Public Delegate Sub ManipulationInertiaStartingEventHandler(sender As Object, e As ManipulationInertiaStartingRoutedEventArgs)
Parameter
- sender
-
Object
Platform::Object
Objek tempat handler dilampirkan.
Data peristiwa untuk peristiwa tersebut.
- Atribut
Contoh
Contoh kode berikut menunjukkan skenario 4 dari sampel Input. Kode ini menunjukkan beberapa pola penggunaan untuk manipulasi langsung menggunakan peristiwa ManipulationStarting, ManipulationStarted, ManipulationDelta, ManipulationInertiaStarting, dan ManipulationCompleted .
private TransformGroup _transformGroup;
private MatrixTransform _previousTransform;
private CompositeTransform _compositeTransform;
private bool forceManipulationsToEnd;
public Scenario4()
{
this.InitializeComponent();
forceManipulationsToEnd = false;
ManipulateMe.ManipulationStarting +=
new ManipulationStartingEventHandler(
ManipulateMe_ManipulationStarting);
ManipulateMe.ManipulationStarted +=
new ManipulationStartedEventHandler(
ManipulateMe_ManipulationStarted);
ManipulateMe.ManipulationDelta +=
new ManipulationDeltaEventHandler(
ManipulateMe_ManipulationDelta);
ManipulateMe.ManipulationCompleted +=
new ManipulationCompletedEventHandler(
ManipulateMe_ManipulationCompleted);
ManipulateMe.ManipulationInertiaStarting +=
new ManipulationInertiaStartingEventHandler(
ManipulateMe_ManipulationInertiaStarting);
InitManipulationTransforms();
}
private void InitManipulationTransforms()
{
_transformGroup = new TransformGroup();
_compositeTransform = new CompositeTransform();
_previousTransform = new MatrixTransform() {
Matrix = Matrix.Identity };
_transformGroup.Children.Add(_previousTransform);
_transformGroup.Children.Add(_compositeTransform);
ManipulateMe.RenderTransform = _transformGroup;
}
private void ManipulateMe_ManipulationStarting(object sender,
ManipulationStartingRoutedEventArgs e)
{
forceManipulationsToEnd = false;
e.Handled = true;
}
private void ManipulateMe_ManipulationStarted(
object sender, ManipulationStartedRoutedEventArgs e)
{
e.Handled = true;
}
private void ManipulateMe_ManipulationInertiaStarting(
object sender, ManipulationInertiaStartingRoutedEventArgs e)
{
e.Handled = true;
}
private void ManipulateMe_ManipulationDelta(
object sender, ManipulationDeltaRoutedEventArgs e)
{
if (forceManipulationsToEnd)
{
e.Complete();
return;
}
_previousTransform.Matrix = _transformGroup.Value;
Point center = _previousTransform.TransformPoint(
new Point(e.Position.X, e.Position.Y));
_compositeTransform.CenterX = center.X;
_compositeTransform.CenterY = center.Y;
_compositeTransform.Rotation = (e.Delta.Rotation * 180) / Math.PI;
_compositeTransform.ScaleX =
_compositeTransform.ScaleY = e.Delta.Scale;
_compositeTransform.TranslateX = e.Delta.Translation.X;
_compositeTransform.TranslateY = e.Delta.Translation.Y;
e.Handled = true;
}
private void ManipulateMe_ManipulationCompleted(object sender,
ManipulationCompletedRoutedEventArgs e)
{
e.Handled = true;
}
private void Scenario4Reset(object sender, RoutedEventArgs e)
{
Scenario4Reset();
}
void Scenario4Reset()
{
forceManipulationsToEnd = true;
ManipulateMe.RenderTransform = null;
InitManipulationTransforms();
}
Berlaku untuk
Saran dan Komentar
https://aka.ms/ContentUserFeedback.
Segera hadir: Sepanjang tahun 2024 kami akan menghentikan penggunaan GitHub Issues sebagai mekanisme umpan balik untuk konten dan menggantinya dengan sistem umpan balik baru. Untuk mengetahui informasi selengkapnya, lihat:Kirim dan lihat umpan balik untuk