Sizable Panel Csharp
//
//Add a new class to your project and paste the code shown below.
//Compile.
//Drop the new control from the top of the toolbox onto your form.
//by Hans Passant.
// http://social.msdn.microsoft.com/Forums/en-US/Vsexpressvcs/thread/a184f136-0e54-4b56-86be-9a1c57212344/
using System;
using System.Drawing;
using System.Windows.Forms;
public class SizeablePanel : Panel {
private const int cGripSize = 20;
private bool mDragging;
private Point mDragPos;
public SizeablePanel() {
this.DoubleBuffered = true;
this.SetStyle(ControlStyles.ResizeRedraw, true);
this.BackColor = Color.White;
}
protected override void OnPaint(PaintEventArgs e) {
ControlPaint.DrawSizeGrip(e.Graphics, this.BackColor,
new Rectangle(this.ClientSize.Width - cGripSize, this.ClientSize.Height - cGripSize, cGripSize, cGripSize));
base.OnPaint(e);
}
private bool IsOnGrip(Point pos) {
return pos.X >= this.ClientSize.Width - cGripSize &&
pos.Y >= this.ClientSize.Height - cGripSize;
}
protected override void OnMouseDown(MouseEventArgs e) {
mDragging = IsOnGrip(e.Location);
mDragPos = e.Location;
base.OnMouseDown(e);
}
protected override void OnMouseUp(MouseEventArgs e) {
mDragging = false;
base.OnMouseUp(e);
}
protected override void OnMouseMove(MouseEventArgs e) {
if (mDragging) {
this.Size = new Size(this.Width + e.X - mDragPos.X,
this.Height + e.Y - mDragPos.Y);
mDragPos = e.Location;
}
else if (IsOnGrip(e.Location)) this.Cursor = Cursors.SizeNWSE;
else this.Cursor = Cursors.Default;
base.OnMouseMove(e);
}
}
누구나 수정하실 수 있습니다. 위키 사용법 참고하세요. |