UIElement.CaptureMouse Method

Definition

이 요소에 마우스 캡처를 강제 하려고 합니다.Attempts to force capture of the mouse to this element.

public:
 virtual bool CaptureMouse();
public bool CaptureMouse ();
abstract member CaptureMouse : unit -> bool
override this.CaptureMouse : unit -> bool
Public Function CaptureMouse () As Boolean

Returns

Boolean

마우스가 캡처되면 true이고, 그렇지 않으면 false입니다.true if the mouse is successfully captured; otherwise, false.

Implements

Examples

다음 예제에서는 마우스를 캡처 (및 캡처 해제) 하는 마우스 및 키 입력된 조합을 처리기의 쌍을 구현 및 3D 모델 보기에 특수 한 마우스 모드를 사용 합니다.The following example implements a pair of handlers for mouse and key input combination that capture (and uncapture) the mouse and enable a special mouse mode for viewing a 3D model.

private void MouseDownHandler(object sender, MouseButtonEventArgs e)
{
    if (!Enabled) return;
    e.Handled = true;

    if (Keyboard.IsKeyDown(Key.F1) == true)
    {
        Reset();
        return;
    }

    UIElement el = (UIElement)sender;
    _point = e.MouseDevice.GetPosition(el);
    // Initialize the center of rotation to the lookatpoint
    if (!_centered)
    {
        ProjectionCamera camera = (ProjectionCamera)_slaves[0].Camera;
        _center = camera.LookDirection;
        _centered = true;
    }

    _scaling = (e.MiddleButton == MouseButtonState.Pressed);

    if (Keyboard.IsKeyDown(Key.Space) == false)
        _rotating = true;
    else
        _rotating = false;

    el.CaptureMouse();
}

private void MouseUpHandler(object sender, MouseButtonEventArgs e)
{
    if (!_enabled) return;
    e.Handled = true;

    // Stuff the current initial + delta into initial so when we next move we
    // start at the right place.
    if (_rotating == true)
    {
        _rotation = _rotationDelta * _rotation;
    }
    else
    {
        _translate += _translateDelta;
        _translateDelta.X = 0;
        _translateDelta.Y = 0;
    }

    //_scale = _scaleDelta*_scale;
    UIElement el = (UIElement)sender;
    el.ReleaseMouseCapture();
}
Private Sub MouseDownHandler(ByVal sender As Object, ByVal e As MouseButtonEventArgs)
    If Not Enabled Then
        Return
    End If
    e.Handled = True


    If Keyboard.IsKeyDown(Key.F1) = True Then
        Reset()
        Return
    End If

    Dim el As UIElement = CType(sender, UIElement)
    _point = e.MouseDevice.GetPosition(el)
    ' Initialize the center of rotation to the lookatpoint
    If Not _centered Then
        Dim camera As ProjectionCamera = CType(_slaves(0).Camera, ProjectionCamera)
        _center = camera.LookDirection
        _centered = True
    End If

    _scaling = (e.MiddleButton = MouseButtonState.Pressed)

    If Keyboard.IsKeyDown(Key.Space) = False Then
        _rotating = True
    Else
        _rotating = False
    End If

    el.CaptureMouse()
End Sub

Private Sub MouseUpHandler(ByVal sender As Object, ByVal e As MouseButtonEventArgs)
    If Not _enabled Then
        Return
    End If
    e.Handled = True

    ' Stuff the current initial + delta into initial so when we next move we
    ' start at the right place.
    If _rotating = True Then
        _rotation = _rotationDelta * _rotation
    Else
        _translate += _translateDelta
        _translateDelta.X = 0
        _translateDelta.Y = 0
    End If

    '_scale = _scaleDelta * _scale
    Dim el As UIElement = CType(sender, UIElement)
    el.ReleaseMouseCapture()
End Sub

Remarks

를 캡처할 요소 활성화 되어야 합니다.To be captured, an element must be enabled. CaptureMouse를 호출 하기 전에 IsEnabled true 인지 여부를 확인 합니다.Check whether IsEnabled is true before you call CaptureMouse.

CaptureMouse를 호출 하 여 true반환 하는 경우 IsMouseCapturedtrue됩니다.If calling CaptureMouse returns true, then IsMouseCaptured is also true.

CaptureMouse를 호출 하 여 true반환 하는 경우 GotMouseCaptureIsMouseCapturedChanged 이벤트가 발생 하 고 이벤트 데이터가 RoutedEventArgs.Source 메서드가 호출 된 요소로 보고 됩니다.CaptureMouseIf calling CaptureMouse returns true, then the GotMouseCapture and IsMouseCapturedChanged events are raised, with RoutedEventArgs.Source in the event data reported as the element where the CaptureMouse method is called. 강제로 캡처하는 경우 기존 캡처 (특히 마우스를 사용 하 여 끌어서 놓기와 관련 된 캡처)를 방해할 수 있습니다.If you force capture, you might interfere with existing captures - especially with captures that relate to drag-and-drop with the mouse.

모든 요소에서 마우스 캡처를 지우려면 null으로 제공 된 element 매개 변수를 사용 하 여 Mouse.Capture를 호출 합니다.To clear mouse capture from all elements, call Mouse.Capture with the element parameter provided as null.

Applies to

See also