public const int ERROR_DELETING_ICM_XFORM = 2019;

static extern bool GetWorldTransform(IntPtr hdc, out XFORM lpXform);

XFORM

static extern bool ModifyWorldTransform(IntPtr hdc, [In] ref XFORM lpXform,

XFORM

      ///   specified, the XFORM structure pointed to by lpXform is ignored.

      ///   Multiplies the current transformation by the data in the XFORM structure. (The data in the

      ///   XFORM structure becomes the left multiplicand, and the data for the current transformation

      ///   Multiplies the current transformation by the data in the XFORM structure. (The data in the

      ///   XFORM structure becomes the right multiplicand, and the data for the current transformation

static extern bool SetWorldTransform(IntPtr hdc, [In] ref XFORM lpXform);

XFORM

    ///   The XFORM structure specifies a world-space to page-space transformation.

    public struct XFORM {

      public XFORM(float eM11, float eM12, float eM21, float eM22, float eDx, float eDy) {

      public static implicit operator System.Drawing.Drawing2D.Matrix(XFORM xf) {

      public static implicit operator XFORM(System.Drawing.Drawing2D.Matrix m) {

        return new XFORM(elems[0], elems[1], elems[2], elems[3], elems[4], elems[5]);