WPF 音量拨号代码教程代码在我的代码中有问题但在教程代码中 none
WPF volume dial code tutorial code has issues in my code but none in the tutorial code
嘿，我需要一些帮助才能使下面的代码正常工作。我一直在关注 this tutorial，大多数事情都有效，但代码中的一些事情似乎由于某种原因不起作用。所有这些代码看起来都像教程中的代码，所以我不确定发生了什么？
用户控制xaml代码：
<UserControl x:Class="carProg.dial"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:carProgForKids"
mc:Ignorable="d" Height="450" Width="450">
<Grid Manipulation.ManipulationMode="All" ManipulationDelta="Grid_ManipulationDelta">
<Ellipse Stroke="Black" Margin="30" Fill="#FFFFE15D"/>
<Grid>
<Grid.RenderTransform>
<RotateTransform CenterX="225" CenterY="225" Angle="{Binding Angle}" />
</Grid.RenderTransform>
<Ellipse Fill="#FFFFFDF3"
Height="100" Stroke="Black" Margin="0"
VerticalAlignment="Top" Width="100"/>
</Grid>
</Grid>
</UserControl>
后面的代码：
using System;
using System.ComponentModel;
using System.Runtime.CompilerServices;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
namespace carProg
{
public partial class dial : UserControl, INotifyPropertyChanged
{
public dial()
{
InitializeComponent();
this.DataContext = this;
}
private void Grid_ManipulationDelta(object sender, ManipulationDeltaEventArgs e)
{
this.Angle = GetAngle(e.Position, this.RenderSize);
this.Amount = (int)(this.Angle / 360 * 100);
}
int m_Amount = default(int);
public int Amount {
get { return m_Amount; }
set { SetProperty(ref m_Amount, value);
} }
double m_Angle = default(double);
public double Angle {
get { return m_Angle; }
set { SetProperty(ref m_Angle, value);
} }
public event PropertyChangedEventHandler PropertyChanged;
void SetProperty<T>(ref T storage, T value, [System.Runtime.CompilerServices.CallerMemberName]);
public enum Quadrants : int { nw = 2, ne = 1, sw = 4, se = 3 }
private double GetAngle(Point touchPoint, Size circleSize)
{
var _X = touchPoint.X - (circleSize.Width / 2d);
var _Y = circleSize.Height - touchPoint.Y - (circleSize.Height / 2d);
var _Hypot = Math.Sqrt(_X * _X + _Y * _Y);
var _Value = Math.Asin(_Y / _Hypot) * 180 / Math.PI;
var _Quadrant = (_X >= 0) ?
(_Y >= 0) ? Quadrants.ne : Quadrants.se :
(_Y >= 0) ? Quadrants.nw : Quadrants.sw;
switch (_Quadrant)
{
case Quadrants.ne: _Value = 090 - _Value; break;
case Quadrants.nw: _Value = 270 + _Value; break;
case Quadrants.se: _Value = 090 - _Value; break;
case Quadrants.sw: _Value = 270 + _Value; break;
}
return _Value;
}
}
}
目前的问题是：
e.Position
错误：
Error CS1061 'ManipulationDeltaEventArgs' does not contain a
definition for 'Position' and no accessible extension method
'Position' accepting a first argument of type
'ManipulationDeltaEventArgs' could be found (are you missing a using
directive or an assembly reference?)
设置属性
错误：
Error CS7036 There is no argument given that corresponds to the
required formal parameter '' of 'dial.SetProperty(ref T, T, ?)'
CallerMemberName
错误：
Error CS1061 'ManipulationDeltaEventArgs' does not contain a
definition for 'Position' and no accessible extension method
'Position' accepting a first argument of type
'ManipulationDeltaEventArgs' could be found (are you missing a using
directive or an assembly reference?)
并且在 xaml 用户控件上：
<网格Manipulation.ManipulationMode="全部"
错误：
Error Manipulation is not active on the specified element.
不确定为什么我会收到这些错误，因为它与视频教程的代码相同，而且没有像我的那样显示错误..
更新 #1
更新#2
该代码应产生一个拨号盘：
更新 #3：让鼠标充当触摸设备
在 BlakeNUI 中添加 MouseTouchDevice.cs class:
public class MouseTouchDevice : TouchDevice, ITouchDevice
{
//Class Members
private static MouseTouchDevice device;
public Point Position { get; set; }
//Public Static Methods
public static void RegisterEvents(FrameworkElement root)
{
root.PreviewMouseDown += MouseDown;
root.PreviewMouseMove += MouseMove;
root.PreviewMouseUp += MouseUp;
root.LostMouseCapture += LostMouseCapture;
root.MouseLeave += MouseLeave;
}
//Private Static Methods
private static void MouseDown(object sender, MouseButtonEventArgs e)
{
if (device != null &&
device.IsActive)
{
device.ReportUp();
device.Deactivate();
device = null;
}
device = new MouseTouchDevice(e.MouseDevice.GetHashCode());
device.SetActiveSource(e.MouseDevice.ActiveSource);
device.Position = e.GetPosition(null);
device.Activate();
device.ReportDown();
}
private static void MouseMove(object sender, MouseEventArgs e)
{
if (device != null &&
device.IsActive)
{
device.Position = e.GetPosition(null);
device.ReportMove();
}
}
private static void MouseUp(object sender, MouseButtonEventArgs e)
{
LostMouseCapture(sender, e);
}
static void LostMouseCapture(object sender, MouseEventArgs e)
{
if (device != null &&
device.IsActive)
{
device.Position = e.GetPosition(null);
device.ReportUp();
device.Deactivate();
device = null;
}
}
static void MouseLeave(object sender, MouseEventArgs e)
{
LostMouseCapture(sender, e);
}
//Constructors
public MouseTouchDevice(int deviceId) :
base(deviceId)
{
Position = new Point();
}
//Overridden methods
public override TouchPointCollection GetIntermediateTouchPoints(IInputElement relativeTo)
{
return new TouchPointCollection();
}
public override TouchPoint GetTouchPoint(IInputElement relativeTo)
{
Point point = Position;
}
到我的项目并放置这个：
public watchingMovie(String movie)
{
InitializeComponent();
MouseTouchDevice.RegisterEvents(this);
...
}
让它像在触摸设备上一样工作。
尝试在事件处理程序中将e.Position替换为e.ManipulationOrigin并将Grid中的IsManipulationEnabled属性设置为true XAML 标记：
<Grid IsManipulationEnabled="True" ...
您还需要实际实现 SetProperty<T> 方法。
目前的问题是：
Error CS1061 'ManipulationDeltaEventArgs' does not contain a definition for 'Position' and no accessible extension method 'Position' accepting a first argument of type 'ManipulationDeltaEventArgs' could be found (are you missing a using directive or an assembly reference?)
此错误是因为它不存在，您可以将 .Position 替换为 ManipulationOrigin 以获取操作起源点和 returns a System.Windows.Point :
this.Angle = GetAngle(e.ManipulationOrigin, this.RenderSize);
Error CS7036 There is no argument given that corresponds to the required formal parameter '' of 'dial.SetProperty(ref T, T, ?)'
请参阅下面的示例实现：
public event PropertyChangedEventHandler PropertyChanged;
protected void OnPropertyChanged(string propertyName) => PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
protected bool SetProperty<T>(ref T storage, T value, [CallerMemberName] string propName = "")
{
if (EqualityComparer<T>.Default.Equals(storage, value)) return false;
storage = value;
OnPropertyChanged(propName);
return true;
}
Error Manipulation is not active on the specified element.
要解决此问题，请在网格本身上设置 IsManipulationEnabled="True"，这意味着为 UIElement
启用了操作
所有这些都结束了：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Runtime.CompilerServices;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
namespace carProg
{
/// <summary>
/// Interaction logic for dial.xaml
/// </summary>
public partial class dial : UserControl, INotifyPropertyChanged
{
public dial()
{
InitializeComponent();
this.DataContext = this;
}
private void Grid_ManipulationDelta(object sender, ManipulationDeltaEventArgs e)
{
this.Angle = GetAngle(e.ManipulationOrigin, this.RenderSize);
this.Amount = (int)(this.Angle / 360 * 100);
}
int m_Amount = default(int);
public int Amount
{
get { return m_Amount; }
set
{
SetProperty(ref m_Amount, value);
}
}
double m_Angle = default(double);
public double Angle
{
get { return m_Angle; }
set
{
SetProperty(ref m_Angle, value);
}
}
// Please note the changes with OnPropertyChanged and SetProperty
public event PropertyChangedEventHandler PropertyChanged;
protected void OnPropertyChanged(string propertyName) => PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
protected bool SetProperty<T>(ref T storage, T value, [CallerMemberName] string propName = "")
{
if (EqualityComparer<T>.Default.Equals(storage, value)) return false;
storage = value;
OnPropertyChanged(propName);
return true;
}
public enum Quadrants : int { nw = 2, ne = 1, sw = 4, se = 3 }
private double GetAngle(Point touchPoint, Size circleSize)
{
var _X = touchPoint.X - (circleSize.Width / 2d);
var _Y = circleSize.Height - touchPoint.Y - (circleSize.Height / 2d);
var _Hypot = Math.Sqrt(_X * _X + _Y * _Y);
var _Value = Math.Asin(_Y / _Hypot) * 180 / Math.PI;
var _Quadrant = (_X >= 0) ?
(_Y >= 0) ? Quadrants.ne : Quadrants.se :
(_Y >= 0) ? Quadrants.nw : Quadrants.sw;
switch (_Quadrant)
{
case Quadrants.ne: _Value = 090 - _Value; break;
case Quadrants.nw: _Value = 270 + _Value; break;
case Quadrants.se: _Value = 090 - _Value; break;
case Quadrants.sw: _Value = 270 + _Value; break;
}
return _Value;
}
}
}
// Please note: IsManipulationEnabled on the grid
<Grid IsManipulationEnabled="True" ManipulationDelta="Grid_ManipulationDelta">
<Ellipse Margin="30"
Fill="#FFFFE15D"
Stroke="Black"
/>
<Grid>
<Grid.RenderTransform>
<RotateTransform Angle="{Binding Angle}" CenterX="225" CenterY="225" />
</Grid.RenderTransform>
<Ellipse Width="100"
Height="100"
Margin="0"
VerticalAlignment="Top"
Fill="#FFFFFDF3"
Stroke="Black"
/>
</Grid>
</Grid>
嘿，我需要一些帮助才能使下面的代码正常工作。我一直在关注 this tutorial，大多数事情都有效，但代码中的一些事情似乎由于某种原因不起作用。所有这些代码看起来都像教程中的代码，所以我不确定发生了什么？
用户控制xaml代码：
<UserControl x:Class="carProg.dial"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="clr-namespace:carProgForKids"
mc:Ignorable="d" Height="450" Width="450">
<Grid Manipulation.ManipulationMode="All" ManipulationDelta="Grid_ManipulationDelta">
<Ellipse Stroke="Black" Margin="30" Fill="#FFFFE15D"/>
<Grid>
<Grid.RenderTransform>
<RotateTransform CenterX="225" CenterY="225" Angle="{Binding Angle}" />
</Grid.RenderTransform>
<Ellipse Fill="#FFFFFDF3"
Height="100" Stroke="Black" Margin="0"
VerticalAlignment="Top" Width="100"/>
</Grid>
</Grid>
</UserControl>
后面的代码：
using System;
using System.ComponentModel;
using System.Runtime.CompilerServices;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
namespace carProg
{
public partial class dial : UserControl, INotifyPropertyChanged
{
public dial()
{
InitializeComponent();
this.DataContext = this;
}
private void Grid_ManipulationDelta(object sender, ManipulationDeltaEventArgs e)
{
this.Angle = GetAngle(e.Position, this.RenderSize);
this.Amount = (int)(this.Angle / 360 * 100);
}
int m_Amount = default(int);
public int Amount {
get { return m_Amount; }
set { SetProperty(ref m_Amount, value);
} }
double m_Angle = default(double);
public double Angle {
get { return m_Angle; }
set { SetProperty(ref m_Angle, value);
} }
public event PropertyChangedEventHandler PropertyChanged;
void SetProperty<T>(ref T storage, T value, [System.Runtime.CompilerServices.CallerMemberName]);
public enum Quadrants : int { nw = 2, ne = 1, sw = 4, se = 3 }
private double GetAngle(Point touchPoint, Size circleSize)
{
var _X = touchPoint.X - (circleSize.Width / 2d);
var _Y = circleSize.Height - touchPoint.Y - (circleSize.Height / 2d);
var _Hypot = Math.Sqrt(_X * _X + _Y * _Y);
var _Value = Math.Asin(_Y / _Hypot) * 180 / Math.PI;
var _Quadrant = (_X >= 0) ?
(_Y >= 0) ? Quadrants.ne : Quadrants.se :
(_Y >= 0) ? Quadrants.nw : Quadrants.sw;
switch (_Quadrant)
{
case Quadrants.ne: _Value = 090 - _Value; break;
case Quadrants.nw: _Value = 270 + _Value; break;
case Quadrants.se: _Value = 090 - _Value; break;
case Quadrants.sw: _Value = 270 + _Value; break;
}
return _Value;
}
}
}
目前的问题是：
e.Position 错误：
Error CS1061 'ManipulationDeltaEventArgs' does not contain a definition for 'Position' and no accessible extension method 'Position' accepting a first argument of type 'ManipulationDeltaEventArgs' could be found (are you missing a using directive or an assembly reference?)
设置属性 错误：
Error CS7036 There is no argument given that corresponds to the required formal parameter '' of 'dial.SetProperty(ref T, T, ?)'
CallerMemberName 错误：
Error CS1061 'ManipulationDeltaEventArgs' does not contain a definition for 'Position' and no accessible extension method 'Position' accepting a first argument of type 'ManipulationDeltaEventArgs' could be found (are you missing a using directive or an assembly reference?)
并且在 xaml 用户控件上：
<网格Manipulation.ManipulationMode="全部" 错误：
Error Manipulation is not active on the specified element.
不确定为什么我会收到这些错误，因为它与视频教程的代码相同，而且没有像我的那样显示错误..
更新 #1
更新#2 该代码应产生一个拨号盘：
更新 #3：让鼠标充当触摸设备
在 BlakeNUI 中添加 MouseTouchDevice.cs class:
public class MouseTouchDevice : TouchDevice, ITouchDevice
{
//Class Members
private static MouseTouchDevice device;
public Point Position { get; set; }
//Public Static Methods
public static void RegisterEvents(FrameworkElement root)
{
root.PreviewMouseDown += MouseDown;
root.PreviewMouseMove += MouseMove;
root.PreviewMouseUp += MouseUp;
root.LostMouseCapture += LostMouseCapture;
root.MouseLeave += MouseLeave;
}
//Private Static Methods
private static void MouseDown(object sender, MouseButtonEventArgs e)
{
if (device != null &&
device.IsActive)
{
device.ReportUp();
device.Deactivate();
device = null;
}
device = new MouseTouchDevice(e.MouseDevice.GetHashCode());
device.SetActiveSource(e.MouseDevice.ActiveSource);
device.Position = e.GetPosition(null);
device.Activate();
device.ReportDown();
}
private static void MouseMove(object sender, MouseEventArgs e)
{
if (device != null &&
device.IsActive)
{
device.Position = e.GetPosition(null);
device.ReportMove();
}
}
private static void MouseUp(object sender, MouseButtonEventArgs e)
{
LostMouseCapture(sender, e);
}
static void LostMouseCapture(object sender, MouseEventArgs e)
{
if (device != null &&
device.IsActive)
{
device.Position = e.GetPosition(null);
device.ReportUp();
device.Deactivate();
device = null;
}
}
static void MouseLeave(object sender, MouseEventArgs e)
{
LostMouseCapture(sender, e);
}
//Constructors
public MouseTouchDevice(int deviceId) :
base(deviceId)
{
Position = new Point();
}
//Overridden methods
public override TouchPointCollection GetIntermediateTouchPoints(IInputElement relativeTo)
{
return new TouchPointCollection();
}
public override TouchPoint GetTouchPoint(IInputElement relativeTo)
{
Point point = Position;
}
到我的项目并放置这个：
public watchingMovie(String movie)
{
InitializeComponent();
MouseTouchDevice.RegisterEvents(this);
...
}
让它像在触摸设备上一样工作。
尝试在事件处理程序中将e.Position替换为e.ManipulationOrigin并将Grid中的IsManipulationEnabled属性设置为true XAML 标记：
<Grid IsManipulationEnabled="True" ...
您还需要实际实现 SetProperty<T> 方法。
目前的问题是：
Error CS1061 'ManipulationDeltaEventArgs' does not contain a definition for 'Position' and no accessible extension method 'Position' accepting a first argument of type 'ManipulationDeltaEventArgs' could be found (are you missing a using directive or an assembly reference?)
此错误是因为它不存在，您可以将 .Position 替换为 ManipulationOrigin 以获取操作起源点和 returns a System.Windows.Point :
this.Angle = GetAngle(e.ManipulationOrigin, this.RenderSize);
Error CS7036 There is no argument given that corresponds to the required formal parameter '' of 'dial.SetProperty(ref T, T, ?)'
请参阅下面的示例实现：
public event PropertyChangedEventHandler PropertyChanged;
protected void OnPropertyChanged(string propertyName) => PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
protected bool SetProperty<T>(ref T storage, T value, [CallerMemberName] string propName = "")
{
if (EqualityComparer<T>.Default.Equals(storage, value)) return false;
storage = value;
OnPropertyChanged(propName);
return true;
}
Error Manipulation is not active on the specified element.
要解决此问题，请在网格本身上设置 IsManipulationEnabled="True"，这意味着为 UIElement
启用了操作所有这些都结束了：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Runtime.CompilerServices;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
namespace carProg
{
/// <summary>
/// Interaction logic for dial.xaml
/// </summary>
public partial class dial : UserControl, INotifyPropertyChanged
{
public dial()
{
InitializeComponent();
this.DataContext = this;
}
private void Grid_ManipulationDelta(object sender, ManipulationDeltaEventArgs e)
{
this.Angle = GetAngle(e.ManipulationOrigin, this.RenderSize);
this.Amount = (int)(this.Angle / 360 * 100);
}
int m_Amount = default(int);
public int Amount
{
get { return m_Amount; }
set
{
SetProperty(ref m_Amount, value);
}
}
double m_Angle = default(double);
public double Angle
{
get { return m_Angle; }
set
{
SetProperty(ref m_Angle, value);
}
}
// Please note the changes with OnPropertyChanged and SetProperty
public event PropertyChangedEventHandler PropertyChanged;
protected void OnPropertyChanged(string propertyName) => PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
protected bool SetProperty<T>(ref T storage, T value, [CallerMemberName] string propName = "")
{
if (EqualityComparer<T>.Default.Equals(storage, value)) return false;
storage = value;
OnPropertyChanged(propName);
return true;
}
public enum Quadrants : int { nw = 2, ne = 1, sw = 4, se = 3 }
private double GetAngle(Point touchPoint, Size circleSize)
{
var _X = touchPoint.X - (circleSize.Width / 2d);
var _Y = circleSize.Height - touchPoint.Y - (circleSize.Height / 2d);
var _Hypot = Math.Sqrt(_X * _X + _Y * _Y);
var _Value = Math.Asin(_Y / _Hypot) * 180 / Math.PI;
var _Quadrant = (_X >= 0) ?
(_Y >= 0) ? Quadrants.ne : Quadrants.se :
(_Y >= 0) ? Quadrants.nw : Quadrants.sw;
switch (_Quadrant)
{
case Quadrants.ne: _Value = 090 - _Value; break;
case Quadrants.nw: _Value = 270 + _Value; break;
case Quadrants.se: _Value = 090 - _Value; break;
case Quadrants.sw: _Value = 270 + _Value; break;
}
return _Value;
}
}
}
// Please note: IsManipulationEnabled on the grid
<Grid IsManipulationEnabled="True" ManipulationDelta="Grid_ManipulationDelta">
<Ellipse Margin="30"
Fill="#FFFFE15D"
Stroke="Black"
/>
<Grid>
<Grid.RenderTransform>
<RotateTransform Angle="{Binding Angle}" CenterX="225" CenterY="225" />
</Grid.RenderTransform>
<Ellipse Width="100"
Height="100"
Margin="0"
VerticalAlignment="Top"
Fill="#FFFFFDF3"
Stroke="Black"
/>
</Grid>
</Grid>