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Imports System
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Imports System.Collections
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Imports System.Reflection
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Imports System.IO
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Imports System.Runtime.InteropServices
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Imports System.Drawing
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Imports System.Drawing.Imaging
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Namespace MAGIC
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Public Class BitmapHandler
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Implements IDisposable
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'The list of bitmap files that have been created in the Temp folder
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Dim files As New ArrayList
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Sub Dispose() Implements IDisposable.Dispose
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CleanFiles()
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End Sub
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'Creates a file on disk from the specified bitmap resource
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Function CreateFileFromResourceBitmap(ByVal bitmapName As String) As String
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Dim thisAssembly As [Assembly]
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Dim byteStream As Stream
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Dim image As Bitmap
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Dim filePath As String
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'Initial Values
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filePath = System.IO.Path.GetTempFileName()
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'Obtain the bitmap
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thisAssembly = System.Reflection.Assembly.GetAssembly(Me.GetType())
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byteStream = thisAssembly.GetManifestResourceStream(bitmapName)
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image = New Bitmap(byteStream)
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Try
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'Try to save the image to disk
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image.Save(filePath)
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CreateFileFromResourceBitmap = filePath
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files.Add(filePath)
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Catch e As Exception
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'If it failed to save, return an empy path string
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CreateFileFromResourceBitmap = ""
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Return ""
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Finally
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'Clean things up
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image.Dispose()
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thisAssembly = Nothing
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byteStream.Close()
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byteStream = Nothing
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End Try
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End Function
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'Removes the image files from your temp folder
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Function CleanFiles() As Boolean
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Dim curFile As String
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While files.Count > 0
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Try
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'Try to delete the file
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curFile = files.Item(0)
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File.Delete(curFile)
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files.RemoveAt(0)
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Catch e As Exception
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files.RemoveAt(0)
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End Try
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End While
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End Function
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End Class
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End Namespace |
