C#

<br />
public void DrawImage(Image image, Point[] destPoints, Rectangle srcRect, GraphicsUnit srcUnit, ImageAttributes imageAttr, DrawImageAbort callback, int callbackData)<br />
{<br />
    if (destPoints == null)<br />
    {<br />
        throw new ArgumentNullException("destPoints");<br />
    }<br />
    if (image == null)<br />
    {<br />
        throw new ArgumentNullException("image");<br />
    }<br />
    int length = destPoints.Length;<br />
    if ((length != 3) && (length != 4))<br />
    {<br />
        throw new ArgumentException(SR.GetString("GdiplusDestPointsInvalidLength"));<br />
    }<br />
    IntPtr handle = SafeNativeMethods.Gdip.ConvertPointToMemory(destPoints);<br />
    int errorStatus = SafeNativeMethods.Gdip.GdipDrawImagePointsRectI(new HandleRef(this, this.NativeGraphics), new HandleRef(image, image.nativeImage), new HandleRef(this, handle), destPoints.Length, srcRect.X, srcRect.Y, srcRect.Width, srcRect.Height, (int) srcUnit, new HandleRef(imageAttr, (imageAttr != null) ? imageAttr.nativeImageAttributes : IntPtr.Zero), callback, new HandleRef(null, (IntPtr) callbackData));<br />
    Marshal.FreeHGlobal(handle);<br />
    this.IgnoreMetafileErrors(image, ref errorStatus);<br />
    this.CheckErrorStatus(errorStatus);<br />
}<br />

public bool cmpEqu(int a, int b)
{
    return (a == b);
}
private bool cmpGrtEqu(int a, int b)
{
    return (a >= b);
}
private bool cmpLessEqu(int a, int b)
{
    return (a <= b);
}

public delegate bool MyCompare(int a, int b);
MyCompare cmpLess = new MyCompare(cmpLess);
MyCompare cmpLessEqu = new MyCompare(cmpLessEqu);
MyCompare cmpEqu = new MyCompare(cmpEqu);
MyCompare cmpGrtEqu = new MyCompare(cmpGrtEqu);