using System . Runtime . InteropServices;
[ DllImport ( "user32.dll" )]
public static extern IntPtr GetDC( IntPtr hwnd);
[ DllImport ( "user32.dll" )]
public static extern Int32 ReleaseDC( IntPtr hwnd, IntPtr hdc);
[ DllImport ( "gdi32.dll" )]
public static extern uint GetPixel( IntPtr hdc, int nXPos, int nYPos);
private void button1_Click( object sender , EventArgs e)
{
IntPtr vDC = GetDC( IntPtr . Zero);
int vPixel = ( int )GetPixel(vDC, Cursor . Position . X, Cursor . Position . Y);
Color vColor = Color . FromArgb(
(vPixel & 0x000000FF ) >> 0 ,
(vPixel & 0x0000FF00 ) >> 8 ,
(vPixel & 0x00FF0000 ) >> 16 );
ReleaseDC( IntPtr . Zero, vDC);
button1 . ForeColor = vColor;
}