C#

<br />
private void KeyerForm_MouseMove(object sender, MouseEventArgs e)<br />
{<br />
SetCursor(e);<br />
if (this.bMDown)<br />
{<br />
int delta_x = e.X - this.StartX;<br />
int delta_y = e.Y - this.StartY;<br />
<br />
//Out of border check<br />
if ((this.Left + delta_x) < 0 || (this.Top + delta_y) < 0 || (this.Left + delta_x) > (this.Parent.Width - this.Width) || (this.Top + delta_y) > (this.Parent.Height - this.Height))<br />
{<br />
return;<br />
}<br />
<br />
if ((e.X < WidthOfRand || ((this.Size.Width - e.X) < WidthOfRand)) && (e.X != this.StartX))<br />
{<br />
//on the left y border<br />
if (e.X < WidthOfRand)<br />
{<br />
this.Width += delta_x * (-1);<br />
this.Left += delta_x;<br />
this.Refresh();<br />
this.Parent.Refresh();<br />
return;<br />
}<br />
//on the right y border<br />
if ((this.Size.Width - e.X) < WidthOfRand)<br />
{<br />
this.Width += delta_x; //* (-1);<br />
this.catchMouse(new Point(Cursor.Position.X + delta_x, Cursor.Position.Y));<br />
this.PointToClient(Control.MousePosition);<br />
Cursor.Position = new Point(Cursor.Position.X + delta_x, Cursor.Position.Y);<br />
//this.Left += delta_x;<br />
this.Refresh();<br />
this.Parent.Refresh();<br />
return;<br />
}<br />
return;<br />
}<br />
<br />
<br />
if ((e.Y < WidthOfRand || ((this.Size.Width - e.Y) < WidthOfRand)) && (e.Y != this.StartY))<br />
{<br />
//on the top x border<br />
if (e.Y < WidthOfRand)<br />
{<br />
this.Height += delta_y * (-1);<br />
this.Top += delta_y;<br />
this.Refresh();<br />
this.Parent.Refresh();<br />
}<br />
return;<br />
} <br />
//move<br />
if (((e.X != this.StartX) || (e.Y != this.StartY)) && (this.Cursor == Cursors.Hand))<br />
{<br />
this.Left += e.X - this.StartX;<br />
this.Top += e.Y - this.StartY;<br />
this.Refresh();<br />
this.Parent.Refresh();<br />
}<br />
}<br />
}<br />
<br />
void KeyerForm_MouseUp(object sender, MouseEventArgs e)<br />
{<br />
this.bMDown = false;<br />
}<br />
<br />
void KeyerForm_MouseDown(object sender, MouseEventArgs e)<br />
{<br />
this.StartX = e.X;<br />
this.StartY = e.Y;<br />
this.bMDown = true;<br />
}<br />
<br />
private void SetCursor(MouseEventArgs e)<br />
{<br />
if (e.Y < WidthOfRand || ((this.Size.Height - e.Y) < WidthOfRand))<br />
this.Cursor = Cursors.HSplit;<br />
else<br />
if (e.X < WidthOfRand || ((this.Size.Width - e.X) < WidthOfRand))<br />
this.Cursor = Cursors.VSplit;<br />
else<br />
this.Cursor = Cursors.Hand;<br />
}<br />
<br />