Drag and drop inside a container
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
public class Form1 : System.Windows.Forms.Form
{
internal System.Windows.Forms.Label lblDragger;
public Form1()
{
InitializeComponent();
}
private void InitializeComponent()
{
this.lblDragger = new System.Windows.Forms.Label();
this.SuspendLayout();
//
// lblDragger
//
this.lblDragger.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
this.lblDragger.Image = new Bitmap("winter.jpg");
this.lblDragger.Location = new System.Drawing.Point(110, 105);
this.lblDragger.Name = "lblDragger";
this.lblDragger.Size = new System.Drawing.Size(72, 56);
this.lblDragger.TabIndex = 2;
this.lblDragger.MouseUp += new System.Windows.Forms.MouseEventHandler(this.lblDragger_MouseUp);
this.lblDragger.MouseMove += new System.Windows.Forms.MouseEventHandler(this.lblDragger_MouseMove);
this.lblDragger.MouseDown += new System.Windows.Forms.MouseEventHandler(this.lblDragger_MouseDown);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 266);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.lblDragger});
this.Name = "Form1";
this.Text = "Fake Drag And Drop";
this.ResumeLayout(false);
}
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
private bool isDragging = false;
private int clickOffsetX, clickOffsetY;
private void lblDragger_MouseDown(System.Object sender, System.Windows.Forms.MouseEventArgs e)
{
isDragging = true;
clickOffsetX = e.X;
clickOffsetY = e.Y;
}
private void lblDragger_MouseUp(System.Object sender, System.Windows.Forms.MouseEventArgs e)
{
isDragging = false;
}
private void lblDragger_MouseMove(System.Object sender,
System.Windows.Forms.MouseEventArgs e)
{
if (isDragging == true)
{
lblDragger.Left = e.X + lblDragger.Left - clickOffsetX;
lblDragger.Top = e.Y + lblDragger.Top - clickOffsetY;
}
}
}
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