控件调整大小.doc

usingSystem;
usingSystem.Collections.Generic;
usingSystem.ComponentModel;
usingSystem.Data;
usingSystem.Drawing;
usingSystem.Text;
usingSystem.Windows.Forms;

namespaceWindowsApplication11
{
publicpartialclassForm1:Form
{
privateintoldx;
privateintoldy;

enummPosition
{
left,
right,
top,
bottom
}
privatemPositionadjust;
publicForm1()
{
InitializeComponent();
}

privatevoidbutton1_MouseDown(objectsender,MouseEventArgse)
{
oldx=e.X;
oldy=e.Y;
}

privatevoidbutton1_MouseMove(objectsender,MouseEventArgse)
{
RectanglerectLeft=newRectangle(0,2,2,button1.Height-4);
RectanglerectRight=newRectangle(button1.Width-2,2,2,button1.Width);
RectanglerectTop=newRectangle(2,0,button1.Width-4,2);
RectanglerectBottom=newRectangle(2,button1.Height-2,button1.Width-4,2);

if(rectLeft.Contains(e.X,e.Y))
{
adjust=mPosition.left;
button1.Cursor=Cursors.SizeWE;

}
elseif(rectRight.Contains(e.X,e.Y))
{
adjust=mPosition.right;
button1.Cursor=Cursors.SizeWE;
}
elseif(rectTop.Contains(e.X,e.Y))
{
adjust=mPosition.top;
button1.Cursor=Cursors.SizeNS;
}
elseif(rectBottom.Contains(e.X,e.Y))
{
adjust=mPosition.bottom;
button1.Cursor=Cursors.SizeNS;
}
else
{
button1.Cursor=Cursors.Default;
}
}

privatevoidbutton1_MouseUp(objectsender,MouseEventArgse)
{
if(e.Button==System.Windows.Forms.MouseButtons.Left)
{
intdx=e.X-oldx;
intdy=e.Y-oldy;
switch(adjust)
{
casemPosition.left:
button1.Left+=dx;
button1.Width-=dy;
break;
casemPosition.right:
button1.Width+=dx;
break;
casemPosition.top:
button1.Top+=dy;
button1.Height-=dy;
break;
casemPosition.bottom:
button1.Height+=dy;
break;

}
}

}

}
}

另外一种比较好的
privatevoidbutton1_MouseMove(objectsender,MouseEventArgse)
{
intright=((Button)sender).Width;
intbottom=((Button)sender).Height;
if(e.X>(right-10)&&e.Y>(bottom-10))
{
((Button)sender).Cursor=Cursors.SizeNWSE;
}
elseif(e.X>(right-10))
{
((Button)sender).Cursor=Cursors.VSplit;
}
elseif(e.Y>(bottom-10))
{
((Button)sender).Cursor=Cursors.HSplit;
}
else
{
((Button)sender).Cursor=Cursors.Default;
}
if(e.Button==