So you need efficiency too. Ok, calculate the bounding rectangles of both polygons. If the bounding rectangles don't overlap, neither polygon contains the other, so you can skip the more expensive test. If they do overlap, check if each polygon contains points of the other in the overlap region. If polygon B contains some points of polygon A, but not others, then B doesn't contain A.

It looks, feels and smells like a string containing RTF codes; why wouldn't you just get it like any other string field and either assign it to a RichTextBox.Rtf, or write it to a file (preferably with extension .rtf)? :) Luc Pattyn Have a look at my entry for the lean-and-mean competition; please provide comments, feedback, discussion, and don’t forget to vote for it! Thank you. Local announcement (Antwerp region): Lange Wapper? Neen!

Image img = Image.FromFile("FileAddress"); System.Io.MemoryStream mem=new System.Io.MemoryStream(); img.Save(mem, System.Drawing.Imaging.ImageFormat.Bmp); byte[] b = mem.GetBuffer();

The only thing I can think of is to get a handle to the file without actually loading the file into memory (OpenFile [^] may do this - if not, there may be other functions that will). Once you have that, you can read the data in the file in sections and do what you wish with them, carefully disposing of each section from memory as you go. You'll need to understand the image format so you can interpret the headers and the image data itself. I have no idea with regards to the implementation of this - just an idea that may work. Dave BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn) Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia) Why are you using VB6? Do you hate yourself? (Christian Graus)

Hi, here is some code I've been using for that purpose, it was aiming at JPEG though: FileStream stream=new FileStream(fileSpec, FileMode.Open, FileAccess.Read); //File.OpenRead(fileSpec); Image localImage2=Image.FromStream(stream); #if true int[] piList=localImage2.PropertyIdList; Dictionary<int, string> propNames=new Dictionary<int,string>(); propNames.Add(0x010E, "ImageDescription"); propNames.Add(0x010F, "EquipMake"); propNames.Add(0x0110, "EquipModel"); propNames.Add(0x0112, "Orientation"); propNames.Add(0x011A, "XResolution"); propNames.Add(0x011B, "YResolution"); propNames.Add(0x0132, "DateTime"); propNames.Add(0x0128, "ResolutionUnit"); propNames.Add(0x0131, "SoftwareUsed"); propNames.Add(0x0201, "JPEGInterFormat"); propNames.Add(0x0202, "JPEGInterLength"); propNames.Add(0x0213, "YCbCrPositioning"); propNames.Add(0x501B, "ThumbnailData"); propNames.Add(0x502D, "ThumbnailResolutionX"); propNames.Add(0x502E, "ThumbnailResolutionY"); propNames.Add(0x5090, "LuminanceTable"); propNames.Add(0x5091, "ChrominanceTable"); propNames.Add(0x829A, "ExifExposureTime"); propNames.Add(0x9003, "ExifDTOrig"); propNames.Add(0x9004, "ExifDTDigitized"); propNames.Add(0x9204, "ExifExposureBias"); propNames.Add(0x9209, "ExifFlash"); propNames.Add(0x927C, "ExifMakerNote"); propNames.Add(0x9286, "ExifUserComment"); propNames.Add(0xA002, "ExifPixXDim"); propNames.Add(0xA003, "ExifPixYDim"); foreach (int ID in piList) { //if (propNames[ID]==null) getPropertyItem(localImage2, ID, propNames); if (propNames.ContainsKey(ID)) getPropertyItem(localImage2, ID, propNames); } #endif // we now create a copy, so we can close the filestream // MSDN says: You must keep the stream open for the lifetime of the Image object. // see also the article "PRB: Image File Is Locked When You Set the PictureBox // Image Property to a File" localImage=new Bitmap(localImage2); stream.Close(); localImage2.Dispose(); and protected void getPropertyItem(Image image, int ID, Dictionary<int, string> propNames) { string s=(string)propNames[ID]; if (s==null) s=""; s+=new string(' ', 20); s=s.Substring(0, 20); string name="Prop"+LP_Format.Hex4(ID)+" "+s; string type=null; try { PropertyItem pi=image.GetPropertyItem(ID); s=""; byte[] bb=pi.Value; switch ((PropertyTagType)pi.Type) { case PropertyTagType.Byte: type="(byte)"; for (int i=0; i<bb.Length; i++) { byte us=bb[i]; s+=" "+us