Hello I am developing an application in Visual Studio it is a windowos form application in C # , the application makes use of a monitor multitouch in win10 and I wanted to know if someone can give me some guidance to see if it is possible to zoom in on an image by pinching as in a < strong> iphone , all the information I have found is for WPF applications, I do not know if in windows forms it is possible.
Thanks
Try using this: link
You have an example here: link
#region Using Directives
using System;
using System.Diagnostics;
using System.Drawing;
using System.Windows.Forms;
#endregion
namespace Alteridem.WinTouch.Demo
{
public partial class GestureControl : UserControl
{
// Our touch listener
private readonly GestureListener _gesture;
// Size, location and rotation of the image
private Point _location;
private int _size;
private double _rotation;
// An image to draw
private Image m_image;
// Brushes
private readonly Brush[] _backBrushes = { Brushes.White, Brushes.AntiqueWhite, Brushes.Bisque, Brushes.Wheat, Brushes.Bisque, Brushes.AntiqueWhite };
private int _backBrush;
public GestureControl()
{
InitializeComponent();
SetStyle( ControlStyles.AllPaintingInWmPaint |
ControlStyles.UserPaint |
ControlStyles.ResizeRedraw |
ControlStyles.OptimizedDoubleBuffer, true );
// Subscribe to all the touch events
_gesture = new GestureListener( this );
_gesture.Pan += OnPan;
_gesture.PressAndTap += OnPressAndTap;
_gesture.Rotate += OnRotate;
_gesture.TwoFingerTap += OnTwoFingerTap;
_gesture.Zoom += OnZoom;
m_image = Properties.Resources.icon;
}
private void OnLoad( object sender, EventArgs e )
{
ResetImage();
}
private void ResetImage()
{
// Center the image on the form and reset its size
_size = Math.Min( m_image.Width, m_image.Height ) / 2;
_location = new Point( Width / 2, Height / 2 );
_rotation = 0;
}
void OnPan( object sender, PanEventArgs e )
{
string msg = string.Format( "Pan Loc:({0},{1}) InertiaVector:({2},{3})", e.Location.X, e.Location.Y,
e.InertiaVector.X, e.InertiaVector.Y );
Debug.WriteLine( msg );
if ( !e.Begin )
{
_location.Offset( e.PanOffset );
// Make sure it doesn't leave the screen
if ( _location.X < 0 )
_location.X = 0;
else if ( _location.X > Width )
_location.X = Width;
if ( _location.Y < 0 )
_location.Y = 0;
else if ( _location.Y > Height )
_location.Y = Height;
Invalidate();
}
}
void OnPressAndTap( object sender, PressAndTapEventArgs e )
{
string msg = string.Format( "PressAndTap Loc:({0},{1}) Distance:{2})", e.Location.X, e.Location.Y, e.Distance );
Debug.WriteLine( msg );
if ( e.Begin )
{
if ( ++_backBrush >= _backBrushes.Length )
{
_backBrush = 0;
}
Invalidate();
}
}
void OnRotate( object sender, RotateEventArgs e )
{
string msg = string.Format( "Rotate Loc:({0},{1}) Angle:{2}", e.Location.X, e.Location.Y, e.TotalDegrees );
Debug.WriteLine( msg );
if ( !e.Begin && !e.End )
{
_rotation -= e.Degrees;
Invalidate();
}
}
void OnTwoFingerTap( object sender, TwoFingerTapEventArgs e )
{
string msg = string.Format( "TwoFingerTap Loc:({0},{1}) Distance:{2}", e.Location.X, e.Location.Y, e.Distance );
Debug.WriteLine( msg );
if ( e.Begin )
{
ResetImage();
Invalidate();
}
}
void OnZoom( object sender, ZoomEventArgs e )
{
string msg = string.Format( "Zoom Loc:({0},{1}) Distance:{2}", e.Location.X, e.Location.Y, e.Distance );
Debug.WriteLine( msg );
if ( !e.Begin )
{
_size = (int)(_size * e.PercentChange);
Invalidate();
}
}
protected override void OnPaint( PaintEventArgs e )
{
// Draw Background
e.Graphics.FillRectangle( _backBrushes[_backBrush], 0, 0, Width, Height );
// Draw Info
string info = string.Format( "Pos:{0} Size:{1} Rotation:{2}", _location, _size, _rotation );
e.Graphics.DrawString( info, SystemFonts.DefaultFont, Brushes.Black, 5, 5 );
// Draw Square
e.Graphics.TranslateTransform( _location.X, _location.Y );
e.Graphics.RotateTransform( (float)_rotation );
e.Graphics.TranslateTransform( -_location.X, -_location.Y );
e.Graphics.DrawImage( m_image, _location.X - _size / 2, _location.Y - _size / 2, _size, _size );
}
}
}
n Using Directives
using System;
using System.Diagnostics;
using System.Drawing;
using System.Windows.Forms;
#endregion
namespace Alteridem.WinTouch.Demo
{
public partial class GestureControl : UserControl
{
// Our touch listener
private readonly GestureListener _gesture;
// Size, location and rotation of the image
private Point _location;
private int _size;
private double _rotation;
// An image to draw
private Image m_image;
// Brushes
private readonly Brush[] _backBrushes = { Brushes.White, Brushes.AntiqueWhite, Brushes.Bisque, Brushes.Wheat, Brushes.Bisque, Brushes.AntiqueWhite };
private int _backBrush;
public GestureControl()
{
InitializeComponent();
SetStyle( ControlStyles.AllPaintingInWmPaint |
ControlStyles.UserPaint |
ControlStyles.ResizeRedraw |
ControlStyles.OptimizedDoubleBuffer, true );
// Subscribe to all the touch events
_gesture = new GestureListener( this );
_gesture.Pan += OnPan;
_gesture.PressAndTap += OnPressAndTap;
_gesture.Rotate += OnRotate;
_gesture.TwoFingerTap += OnTwoFingerTap;
_gesture.Zoom += OnZoom;
m_image = Properties.Resources.icon;
}
private void OnLoad( object sender, EventArgs e )
{
ResetImage();
}
private void ResetImage()
{
// Center the image on the form and reset its size
_size = Math.Min( m_image.Width, m_image.Height ) / 2;
_location = new Point( Width / 2, Height / 2 );
_rotation = 0;
}
void OnPan( object sender, PanEventArgs e )
{
string msg = string.Format( "Pan Loc:({0},{1}) InertiaVector:({2},{3})", e.Location.X, e.Location.Y,
e.InertiaVector.X, e.InertiaVector.Y );
Debug.WriteLine( msg );
if ( !e.Begin )
{
_location.Offset( e.PanOffset );
// Make sure it doesn't leave the screen
if ( _location.X < 0 )
_location.X = 0;
else if ( _location.X > Width )
_location.X = Width;
if ( _location.Y < 0 )
_location.Y = 0;
else if ( _location.Y > Height )
_location.Y = Height;
Invalidate();
}
}
void OnPressAndTap( object sender, PressAndTapEventArgs e )
{
string msg = string.Format( "PressAndTap Loc:({0},{1}) Distance:{2})", e.Location.X, e.Location.Y, e.Distance );
Debug.WriteLine( msg );
if ( e.Begin )
{
if ( ++_backBrush >= _backBrushes.Length )
{
_backBrush = 0;
}
Invalidate();
}
}
void OnRotate( object sender, RotateEventArgs e )
{
string msg = string.Format( "Rotate Loc:({0},{1}) Angle:{2}", e.Location.X, e.Location.Y, e.TotalDegrees );
Debug.WriteLine( msg );
if ( !e.Begin && !e.End )
{
_rotation -= e.Degrees;
Invalidate();
}
}
void OnTwoFingerTap( object sender, TwoFingerTapEventArgs e )
{
string msg = string.Format( "TwoFingerTap Loc:({0},{1}) Distance:{2}", e.Location.X, e.Location.Y, e.Distance );
Debug.WriteLine( msg );
if ( e.Begin )
{
ResetImage();
Invalidate();
}
}
void OnZoom( object sender, ZoomEventArgs e )
{
string msg = string.Format( "Zoom Loc:({0},{1}) Distance:{2}", e.Location.X, e.Location.Y, e.Distance );
Debug.WriteLine( msg );
if ( !e.Begin )
{
_size = (int)(_size * e.PercentChange);
Invalidate();
}
}
protected override void OnPaint( PaintEventArgs e )
{
// Draw Background
e.Graphics.FillRectangle( _backBrushes[_backBrush], 0, 0, Width, Height );
// Draw Info
string info = string.Format( "Pos:{0} Size:{1} Rotation:{2}", _location, _size, _rotation );
e.Graphics.DrawString( info, SystemFonts.DefaultFont, Brushes.Black, 5, 5 );
// Draw Square
e.Graphics.TranslateTransform( _location.X, _location.Y );
e.Graphics.RotateTransform( (float)_rotation );
e.Graphics.TranslateTransform( -_location.X, -_location.Y );
e.Graphics.DrawImage( m_image, _location.X - _size / 2, _location.Y - _size / 2, _size, _size );
}
}
}