I encounter a strange problem. I've got a canvas and drawed a complexe structure:
an Image inside a Grid inside a Border.
My Image is the one which is active for moving.
It works well the first time i drag my structure but the second time nothing works at all no exception but nothing works. It seems to me to be a problem of mouse capture but i can't catch what's about.
Here is my event code :
bool captured = false;
double x_shape, x_canvas, y_shape, y_canvas;
double x_shape_Origine, y_shape_Origine;
Border source = null;
int CountZ = 10;
private void shape_MoveButtonDown(object sender, MouseButtonEventArgs e)
{
/// AWFULLY SOURCE WAS null. I don't understand Why it was working the
/// first time
Mouse.Capture(source);
captured = true;
Image myImage = (Image)sender;
Grid outerGrid = (Grid)myImage.Parent;
source = (Border)outerGrid.Parent;
Canvas.SetZIndex(source, CountZ++);
x_shape = Canvas.GetLeft(source);
y_shape = Canvas.GetTop(source);
x_canvas = e.GetPosition(myCanvas).X;
y_canvas = e.GetPosition(myCanvas).Y;
}
private void shape_MoveMoving(object sender, MouseEventArgs e)
{
if (captured)
{
double x = e.GetPosition(myCanvas).X;
double y = e.GetPosition(myCanvas).Y;
x_shape += x - x_canvas;
Canvas.SetLeft(source, x_shape);
x_canvas = x;
y_shape += y - y_canvas;
Canvas.SetTop(source, y_shape);
y_canvas = y;
}
}
private void shape_MoveButtonUp(object sender, MouseButtonEventArgs e)
{
Mouse.Capture(null);
captured = false;
}
private void shape_MouseEnter(object sender, MouseEventArgs e)
{
if (!captured)
{
Border inner = (Border)sender;
Grid parentInner = (Grid)inner.Parent;
parentInner.Children[0].Visibility = Visibility.Visible;
parentInner.Children[2].Visibility = Visibility.Visible;
parentInner.Children[5].Visibility = Visibility.Visible;
parentInner.Children[6].Visibility = Visibility.Visible;
parentInner.Children[8].Visibility = Visibility.Visible;
parentInner.Background = new SolidColorBrush(Colors.Red);
}
}
private void shape_MouseLeave(object sender, MouseEventArgs e)
{
if (!captured)
{
Grid outer = (Grid)sender;
outer.Children[0].Visibility = Visibility.Hidden;
outer.Children[2].Visibility = Visibility.Hidden;
outer.Children[5].Visibility = Visibility.Hidden;
outer.Children[6].Visibility = Visibility.Hidden;
outer.Children[8].Visibility = Visibility.Hidden;
outer.Background = null;
}
}
Hope it will make sense for you
I had a complete sample for D&D with WPF and Silverlight. Here full code, hope it helps.
class MyWnd : Window
{
public MyWnd()
{
var c = new Canvas();
c.Background = new SolidColorBrush(Colors.White);
var rect = new Rectangle { Fill = new SolidColorBrush(Colors.Red), Width = 20, Height = 20 };
c.Children.Add(rect);
this.Content = c;
Canvas.SetLeft(rect, 0);
Canvas.SetTop(rect, 0);
rect.MouseLeftButtonDown+=Handle_MouseDown;
rect.MouseLeftButtonUp+=Handle_MouseUp;
rect.MouseMove+=Handle_MouseMove;
}
bool isMouseCaptured;
double mouseVerticalPosition;
double mouseHorizontalPosition;
public void Handle_MouseDown(object sender, MouseEventArgs args)
{
var item = sender as FrameworkElement;
mouseVerticalPosition = args.GetPosition(null).Y;
mouseHorizontalPosition = args.GetPosition(null).X;
isMouseCaptured = true;
item.CaptureMouse();
}
public void Handle_MouseMove(object sender, MouseEventArgs args)
{
var item = sender as FrameworkElement;
if (isMouseCaptured)
{
// Calculate the current position of the object.
double deltaV = args.GetPosition(null).Y - mouseVerticalPosition;
double deltaH = args.GetPosition(null).X - mouseHorizontalPosition;
double newTop = deltaV + (double)item.GetValue(Canvas.TopProperty);
double newLeft = deltaH + (double)item.GetValue(Canvas.LeftProperty);
// Set new position of object.
item.SetValue(Canvas.TopProperty, newTop);
item.SetValue(Canvas.LeftProperty, newLeft);
// Update position global variables.
mouseVerticalPosition = args.GetPosition(null).Y;
mouseHorizontalPosition = args.GetPosition(null).X;
}
}
public void Handle_MouseUp(object sender, MouseEventArgs args)
{
var item = sender as FrameworkElement;
isMouseCaptured = false;
item.ReleaseMouseCapture();
mouseVerticalPosition = -1;
mouseHorizontalPosition = -1;
}
}
void Main()
{
var wnd = new MyWnd();
wnd.ShowDialog();
}
Related
i am trying to make signature panel in c# windowsform application where input is from drawing tablet
my code as below this code working for line drawing not dot created.
So please suggest how dot and line both are create.
{
Graphics graphics;
Boolean cusorMoving = false;
Pen cursorPen;
int cursorX = -1;
int cursorY = -1;
public SignPad()
{
InitializeComponent();
graphics = panel2.CreateGraphics();
cursorPen = new Pen(Color.Black, 2);
graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
cursorPen.StartCap = System.Drawing.Drawing2D.LineCap.Round;
cursorPen.EndCap = System.Drawing.Drawing2D.LineCap.Round;
}
Mouse Down event
private void panel2_MouseDown(object sender, MouseEventArgs e)
{
cusorMoving = true;
cursorX = e.X;
cursorY = e.Y;
}
private void panel2_MouseUp(object sender, MouseEventArgs e)
{
cusorMoving = false;
cursorX = -1;
cursorY = -1;
}
Mouse Move event
private void panel2_MouseMove(object sender, MouseEventArgs e)
{
if (cursorX != -1 && cursorY != -1 && cusorMoving == true)
{
graphics.DrawLine(cursorPen, new Point(cursorX, cursorY), e.Location);
cursorX = e.X;
cursorY = e.Y;
}
}
You need to store individual points in a collection and draw them separately in the Paint handler. Every time you add a point to the collection, you also need to tell the panel to draw the area where the new segment was added. Something like this:
using System.Collections.Generic;
using System.Drawing;
namespace Lines
{
public partial class SignPad : Form
{
Pen cursorPen = SystemPens.ControlText;
List<Point> points = new List<Point>();
bool cursorMoving = false;
public SignPad()
{
InitializeComponent();
cursorPen = new Pen(Color.Black, 2);
cursorPen.StartCap = System.Drawing.Drawing2D.LineCap.Round;
cursorPen.EndCap = System.Drawing.Drawing2D.LineCap.Round;
}
private void panel2_Paint(object? sender, PaintEventArgs e)
{
var g = e.Graphics;
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
for (int i = 1; i < points.Count; ++i)
g.DrawLine(cursorPen, points[i - 1], points[i]);
}
private void panel2_MouseDown(object? sender, MouseEventArgs e)
{
if (!cursorMoving)
{
cursorMoving = true;
points.Clear();
points.Add(e.Location);
panel2.Invalidate();
}
}
private void panel2_MouseMove(object? sender, MouseEventArgs e)
{
if (cursorMoving && points.Count > 0)
{
var p = e.Location;
var q = points[points.Count - 1];
var r = Rectangle.FromLTRB(Math.Min(p.X, q.X), Math.Min(p.Y, q.Y), Math.Max(p.X, q.X), Math.Max(p.Y, q.Y));
r = Rectangle.Inflate(r, (int)cursorPen.Width, (int)cursorPen.Width);
points.Add(p);
panel2.Invalidate(r);
}
}
private void panel2_MouseUp(object? sender, MouseEventArgs e)
{
cursorMoving = false;
}
}
}
Don't forget to add the Paint handler the same way you added MouseMove, MouseDown and MouseUp handlers - in the Designer.
I'm having a weird behavior with a class I created inheriting from PictureBox.
It's a class made to behave like a button (basically what I care about is the mouse enter, mouse leave, mouse down, mouse up events).
Everything works perfectly until I add the TextLabel (code below) to the control of my customized class. It shows the label, centered and everything as I wanted, but the events I mentioned before (and every other event in that matter) becomes disabled, for some reason it won't fire them.
I would like to know what is the reason for that behavior and if there is any fix for it.
public class RoundedButton : PictureBox
{
private readonly Image r_BasicImage = RoundedButtonCheck2.Properties.Resources.basicRoundedButtonIcon as Image;
private readonly Image r_HoverImage = RoundedButtonCheck2.Properties.Resources.hoverRoundedButtonIcon as Image;
private readonly Image r_ClickImage = RoundedButtonCheck2.Properties.Resources.clickRoundedButtonIcon as Image;
private string m_Text;
private Font m_Font;
public Color m_TextColor;
private Label LabelText = new Label();
public RoundedButton()
{
this.Width = 130;
this.Height = 40;
this.Image = r_BasicImage;
this.BackColor = Color.Transparent;
this.SizeMode = PictureBoxSizeMode.StretchImage;
this.MouseDown += RoundedButton_MouseDown;
this.MouseUp += RoundedButton_MouseUp;
this.MouseEnter += RoundedButton_MouseEnter;
this.MouseLeave += RoundedButton_MouseLeave;
LabelText.Font = ButtonFont;
ButtonTextColor = Color.Black;
//PROBLEMATIC CODE HERE:
***********this.Controls.Add(LabelText);***************
}
public Color ButtonTextColor
{
get
{
return m_TextColor;
}
set
{
m_TextColor = value;
LabelText.ForeColor = m_TextColor;
}
}
public Font ButtonFont
{
get
{
if (m_Font == null)
{
m_Font = new Font("Calibri Light", 12);
}
return m_Font;
}
set
{
m_Font = value;
LabelText.Font = ButtonFont;
adjustLabel();
}
}
public string ButtonText
{
get
{
return m_Text;
}
set
{
m_Text = value;
LabelText.Text = m_Text;
adjustLabel();
}
}
private void adjustLabel()
{
const int MARGIN = 10;
LabelText.AutoSize = true;//needed for autosize calculation of the label;
Size newSize = new Size(LabelText.Size.Width, LabelText.Size.Height); ;
LabelText.AutoSize = false;//after auto-calculated size of the label, set to false in order for centering label works well.
this.MinimumSize = newSize;
this.Size = new Size(newSize.Width + MARGIN, newSize.Height + MARGIN);
LabelText.TextAlign = ContentAlignment.MiddleCenter;
LabelText.Dock = DockStyle.Fill;
}
private void RoundedButton_MouseLeave(object sender, EventArgs e)
{
RoundedButton hoveredButton = sender as RoundedButton;
if (hoveredButton != null)
{
hoveredButton.Image = r_BasicImage;
hoveredButton.SizeMode = PictureBoxSizeMode.StretchImage;
}
}
private void RoundedButton_MouseEnter(object sender, EventArgs e)
{
RoundedButton hoveredButton = sender as RoundedButton;
if (hoveredButton != null)
{
hoveredButton.Image = r_HoverImage;
hoveredButton.SizeMode = PictureBoxSizeMode.StretchImage;
}
}
private void RoundedButton_MouseUp(object sender, MouseEventArgs e)
{
RoundedButton clickedButton = sender as RoundedButton;
if (clickedButton != null)
{
clickedButton.Image = r_BasicImage;
clickedButton.SizeMode = PictureBoxSizeMode.StretchImage;
}
}
private void RoundedButton_MouseDown(object sender, MouseEventArgs e)
{
RoundedButton clickedButton = sender as RoundedButton;
if (clickedButton != null)
{
clickedButton.Image = r_ClickImage;
clickedButton.SizeMode = PictureBoxSizeMode.StretchImage;
}
}
}
I have an application where you can draw on a Canvas (like Paint). The C# code looks basically like this:
private void startDrawing(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
_drawingStart = e.GetPosition((UIElement)sender);
_isDrawing = true;
}
private void stopDrawing(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
_isDrawing = false;
}
private void doDrawing(object sender, System.Windows.Input.MouseEventArgs e)
{
if (_isDrawing)
{
Point current = e.GetPosition((UIElement)sender);
Line line = new Line() { X1 = _drawingStart.X, Y1 = _drawingStart.Y, X2 = current.X, Y2 = current.Y };
line.Stroke = Color;
line.StrokeThickness = StrokeThickness;
DrawingCanvas.Children.Add(line);
_drawingStart = current;
}
}
And the Canvas:
<Canvas x:Name="DrawingCanvas"
Grid.Row="1"
Grid.Column="1"
Background="Transparent"
MouseLeftButtonDown="startDrawing"
MouseLeftButtonUp="stopDrawing"
MouseMove="doDrawing" />
When the StrokeThickness is small, everything works normal. But if I set the StrokeThickness to a bigger number (for example 100), the line is drawn in a "zig-zag"-style and isn't "solid". Any ideas, how to avoid this? Or maybe how to achieve e rounded line (rounded ends of the line)? I think this would solve the problem.
I think you are going to be charmed with my answer:
Point _drawingStart;
bool _isDrawing;
private void startDrawing(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
_drawingStart = e.GetPosition((UIElement)sender);
InitializePath();
_isDrawing = true;
}
private void stopDrawing(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
_isDrawing = false;
}
private void doDrawing(object sender, System.Windows.Input.MouseEventArgs e)
{
if (_isDrawing)
{
AddPoint(e.GetPosition((UIElement)sender));
}
}
private void AddPoint(Point newpoint)
{
LineSegment l = new LineSegment() { Point = newpoint };
pathFigure.Segments.Add(l);
pathFigure.StartPoint = (pathFigure.Segments.First() as LineSegment).Point;
}
PathFigure pathFigure;
Path path;
private void InitializePath()
{
path = new Path()
{
StrokeLineJoin = PenLineJoin.Bevel,
StrokeDashCap = PenLineCap.Round,
StrokeEndLineCap = PenLineCap.Round,
StrokeStartLineCap = PenLineCap.Round,
StrokeThickness = 100.0,
Stroke = new SolidColorBrush(Colors.Red)
};
pathFigure = new PathFigure();
PathGeometry pathGeometry = new PathGeometry();
pathGeometry.Figures = new PathFigureCollection();
pathGeometry.Figures.Add(pathFigure);
path.Data = pathGeometry;
DrawingCanvas.Children.Add(path);
}
Is smoother because creates a real path instead of many lines, I hope you find it useful
You should set the Line's StrokeLineJoin property to either Bevel or Round.
var line = new Line
{
X1 = _drawingStart.X,
Y1 = _drawingStart.Y,
X2 = current.X,
Y2 = current.Y,
Stroke = Color,
StrokeThickness = StrokeThickness,
StrokeLineJoin = PenLineJoin.Round
};
See the PenLineJoin Enumeration page on MSDN for details.
Alternatively you may set the StrokeMiterLimit to a suitable value.
That said, a more elegant solution would be to add points to the Points collection of a Polyline:
private Polyline currentPolyline;
private void startDrawing(object sender, MouseButtonEventArgs e)
{
var canvas = (Canvas)sender;
currentPolyline = new Polyline
{
Stroke = Color,
StrokeThickness = StrokeThickness,
StrokeStartLineCap = PenLineCap.Round,
StrokeEndLineCap = PenLineCap.Round,
StrokeLineJoin = PenLineJoin.Round
};
currentPolyline.Points.Add(e.GetPosition(canvas));
canvas.Children.Add(currentPolyline);
}
private void stopDrawing(object sender, MouseButtonEventArgs e)
{
currentPolyline = null;
}
private void doDrawing(object sender, MouseEventArgs e)
{
if (currentPolyline != null)
{
currentPolyline.Points.Add(e.GetPosition((UIElement)sender));
}
}
I've 4 panels, having same Y and different X, that are created at the program start on a picturebox. When I click on a panel, it sets the focus and is ready to get a keysDown event so i.e. if I click on up arrow key the panel moves up.
This is the code:
public partial class FormView : Form
{
List<CircleButton> myPanels = new List<CircleButton>(); // array of panels CircleButton
Point[] arrayPoints_milestones; // array of X,Y
int index;
public FormView()
{
InitializeComponent();
arrayPoints_milestones = new Point[4];
for (int i = 0; i < 4; i++ )
{
arrayPoints_milestones[i] = new Point { X = 20, Y = 20 };
}
test();
}
protected void panel_Click(object sender, EventArgs e)
{
myPanels[index].PreviewKeyDown -= new PreviewKeyDownEventHandler(panel_KeyDown);
CircleButton panel = sender as CircleButton;
index = (int)panel.Tag;
myPanels[index].Focus(); //panel.Focus();
myPanels[index].PreviewKeyDown += new PreviewKeyDownEventHandler(panel_KeyDown);
}
private void panel_KeyDown(object sender, PreviewKeyDownEventArgs e)
{
if (e.KeyCode == Keys.Up)
{
myPanels[index].Centre = new Point(myPanels[index].Centre.X, myPanels[index].Centre.Y - 10);
MessageBox.Show("" + myPanels[index].Centre.Y);
Invalidate();
}
if (e.KeyCode == Keys.Down)
{
myPanels[index].Centre = new Point(myPanels[index].Centre.X, myPanels[index].Centre.Y + 10);
MessageBox.Show("" + myPanels[index].Centre.Y);
Invalidate();
}
}
private void test()
{
//for (int i = 0; i < 4; i++)
int i=0;
foreach(var value in arrayPoints_milestones)
{
CircleButton panel = new CircleButton();
panel.Tag = i;
panel.Centre = new Point(arrayPoints_milestones[i].X + i * 10, arrayPoints_milestones[i].Y);
panel.Radius = 10;
panel.BackColor = Color.Red;
panel.Message = "Index: " + panel.Tag.ToString();
myPanels.Add(panel); // qui aggiungo il pannello alla lista di pannelli myPanels
pictureBox1.Controls.Add(myPanels[i]);
myPanels[i].Click += new EventHandler(panel_Click);
i++;
}
}
}
and this is the custom panel class:
public class CircleButton : Panel
{
//Properties to draw circle
float radius;
public float Radius
{
get { return radius; }
set
{
radius = value;
this.Size = new Size((int)Radius, (int)Radius);
}
}
public string Name
{
get;
set;
}
Point centre;
public Point Centre
{
get { return centre; }
set
{
centre = value;
this.Location = Centre;
}
}
public string Message { get; set; }
public CircleButton()
{
//Default Values
Name = "panel_base";
this.BackColor = Color.Black;
Radius = 1;
Centre = new Point(0, 0);
this.DoubleBuffered = true;
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
//Defines a graphic path and set it as the panel's region
//For custom region use different path's
if (centre != null)
{
GraphicsPath path = new GraphicsPath();
path.AddEllipse(0, 0, radius, radius);
this.Region = new Region(path);
path.Dispose();
}
}
}
Each time you click a panel, a PreviewKeyDownEventHandler is added - so 3 clicks will trigger 3 (different) eventhandlers with the same invocation target, and each will move your panel for 10 pixels up/down:
protected void panel_Click(object sender, EventArgs e) {
CircleButton panel = sender as CircleButton;
index = (int)panel.Tag;
myPanels[index].Focus(); //panel.Focus();
myPanels[index].PreviewKeyDown += new PreviewKeyDownEventHandler(panel_KeyDown);
}
Updated code for FormView:
public partial class FormView : Form {
List<CircleButton> myPanels = new List<CircleButton>(); // local use only in my example
Point[] arrayPoints_milestones; //not needed anymore
int index; //not needed anymore
public FormView() {
InitializeComponent();
this.Load += FormView_Load;
}
void FormView_Load(object sender, EventArgs args) {
Point panelOffset = new Point(20, 20);
for (int i = 0; i < 4; i++) {
var panel = new CircleButton() {
Name = "panel" + i, //Attention! You have hidden the property "Name" in "Control" with a re-declaration in "CircleButton"
Tag = i, //not needed anymore, right?
Centre = new Point(panelOffset.X + i * 10, panelOffset.Y),
Radius = 10,
BackColor = Color.Red,
Message = "Index: " + i.ToString(),
};
panel.Click += (s, e) => {
panel.Focus();
};
panel.PreviewKeyDown += (s, e) => {
if(e.KeyCode == Keys.Up) {
Point centre = panel.Centre; //copy value
centre.Y -= 10;
panel.Centre = centre; //assign modified copy
Invalidate();
}
if(e.KeyCode == Keys.Down) {
Point centre = panel.Centre; //copy value
centre.Y += 10;
panel.Centre = centre; //assign modified copy
Invalidate();
}
};
myPanels.Add(panel);
pictureBox1.Controls.Add(panel);
}
}
}
i am developing a system which allow user to drag objects around within a same panel, i went through some research and founds that i should use mouse events like mouse_up, mouse_down and mouse_move.
The the program will generate 3 picturebox and allow the user to drag around the every picturebox within the panel, but the program i code did not work perfectly as when i drag over a picturebox, the picturebox will move, but not according to my mouse cursor location, it is somewhere else, besides, when dragging, there is picturebox shadows in the panel, i've tried those update(),refresh(), and invalidate() but it seems not useful for me. Below are my codes, thanks for helping
public partial class Form1 : Form
{
List<PictureBox> pictureBoxList = new List<PictureBox>();
private bool isDragging = false;
public Form1()
{
InitializeComponent();
for (int i = 0; i < 3; i++)
{
PictureBox picture = new PictureBox
{
Name = "pictureBox" + i,
Size = new Size(20, 20),
Location = new Point(i * 40, i * 40),
BorderStyle = BorderStyle.FixedSingle,
SizeMode = PictureBoxSizeMode.Zoom,
ImageLocation = "A.jpg"
};
pictureBoxList.Add(picture);
foreach (PictureBox p in pictureBoxList)
{
p.MouseDown += new MouseEventHandler(c_MouseDown);
p.MouseMove += new MouseEventHandler(c_MouseMove);
p.MouseUp += new MouseEventHandler(c_MouseUp);
pnlDisplayImage.Controls.Add(p);
pnlDisplayImage.Refresh();
}
}
}
void c_MouseDown(object sender, MouseEventArgs e)
{
isDragging = true;
}
void c_MouseMove(object sender, MouseEventArgs e)
{
if (isDragging == true) {
Control c = sender as Control;
for (int i = 0; i < pictureBoxList.Count(); i++)
{
if (c.Equals(pictureBoxList[i]))
{
pictureBoxList[i].Location = new Point(e.X, e.Y);
}
}
}
}
void c_MouseUp(object sender, MouseEventArgs e)
{
PictureBox c = sender as PictureBox;
isDragging = false;
for (int i = 0; i < pictureBoxList.Count(); i++) {
if (c.Equals(pictureBoxList[i])){
pictureBoxList[i].Location = new Point(e.X, e.Y);
}
}
}
private void pnlDisplayImage_Paint(object sender, PaintEventArgs e)
{
foreach (PictureBox p in pictureBoxList)
{
pnlDisplayImage.Controls.Add(p);
}
}
}
Finally I've found what are the problems that caused my program not running as my expectations. The main problem is that I accidentally put the foreach loop inside the for loop which I used to create pictureBox, this problem caused the pictureBox comes out some shadows effect while dragging during run time due to there are few same pictureBox. Also, I have change a little bit of the codes and it now run as what I expected. Below are the code that I want for answer.
public partial class Form1 : Form
{
List<PictureBox> pictureBoxList = new List<PictureBox>();
private bool isDragging = false;
Point move;
public Form1()
{
InitializeComponent();
for (int i = 0; i < 3; i++)
{
PictureBox picture = new PictureBox
{
Name = "pictureBox" + i,
Size = new Size(20, 20),
Location = new Point(i * 40, i * 40),
BorderStyle = BorderStyle.FixedSingle,
SizeMode = PictureBoxSizeMode.Zoom,
ImageLocation = "A.jpg"
};
pictureBoxList.Add(picture);
}
foreach (PictureBox p in pictureBoxList)
{
p.MouseDown += new MouseEventHandler(c_MouseDown);
p.MouseMove += new MouseEventHandler(c_MouseMove);
p.MouseUp += new MouseEventHandler(c_MouseUp);
pnlDisplayImage.Controls.Add(p);
pnlDisplayImage.Refresh();
}
}
void c_MouseDown(object sender, MouseEventArgs e)
{
Control c = sender as Control;
isDragging = true;
move = e.Location;
}
void c_MouseMove(object sender, MouseEventArgs e)
{
if (isDragging == true) {
Control c = sender as Control;
for (int i = 0; i < pictureBoxList.Count(); i++)
{
if (c.Equals(pictureBoxList[i]))
{
pictureBoxList[i].Left += e.X - move.X;
pictureBoxList[i].Top += e.Y - move.Y;
}
}
}
}
void c_MouseUp(object sender, MouseEventArgs e)
{
isDragging = false;
}
}
Try something like (it's custom control with overrides, but should be easy to convert to events):
private bool _isMoved = false; // true if move mode on
private Point _pointMove = new Point(0); // for moving
protected override void OnMouseDown(MouseEventArgs e)
{
// if left button pressed
if(e.Button == MouseButtons.Left)
{
_pointMove.X = e.X;
_pointMove.Y = e.Y;
_isMoved = true;
Cursor = Cursors.SizeAll;
Capture = true;
}
base.OnMouseDown (e);
}
protected override void OnMouseUp(MouseEventArgs e)
{
// if move mode on
if(_isMoved)
{
_isMoved = false;
Cursor = Cursors.Default;
Capture = false;
}
base.OnMouseUp (e);
}
protected override void OnMouseMove(MouseEventArgs e)
{
// if move mode on
if (_isMoved)
{
Left += e.X - _pointMove.X;
Top += e.Y - _pointMove.Y;
}
base.OnMouseMove (e);
}