Xojo Documentation Xojo Documentation

Class (inherits from Object)

The BinaryStream class is an input/output mechanism for reading and writing arbitrary binary data. It can be used with MemoryBlocks and FolderItems.

Properties

IsClosed LittleEndian Length Position

Methods

Close ReadInt8 WriteInt16 EOF ReadSingle WriteInt32 Flush ReadText WriteInt64 Handle ReadUInt16 WriteInt8 Read ReadUInt32 WriteSingle ReadBoolean ReadUInt64 WriteText ReadCurrency ReadUInt8 WriteUInt16 ReadDouble Write WriteUInt32 ReadInt16 WriteBoolean WriteUInt64 ReadInt32 WriteCurrency WriteUInt8 ReadInt64 WriteDouble

Enumerations

LockModes

Constructors

Constructor(mb As MemoryBlock)

Shared Methods

Create FromHandle Open

Notes

The Read/Write methods raise an exception when reading or writing past the end of the stream. File IO prevents thread switching.

Sample Code

Load an image that is copied to an iOS app using a Copy Files Build Step:

Var f As FolderItem = SpecialFolder.GetResource("MyImage.JPG")

Var b As BinaryStream
b = BinaryStream.Open(f, BinaryStream.LockModes.Read)

Var mb As New MemoryBlock(b.Read(b.Length))

b.Close

Var image As iOSImage
image = Image.FromData(mb)

ImageView1.Image = image

See Also

Xojo.IO.FolderItem, Xojo.Core.MemoryBlock classes