Hi,
I need to Save an Image to a Stream using GDI+
Rick Strahl suggested me to try using ADODB.Stream
To make it work, I need to obtain the Handle, the memory pointer that ADO
reserver for my Stream
This handle will be passed to GDI+ further
I've searched all over the web, but did not find any tip on that... Maybe I
didn't look at the right places...
Any tips ?
Below is the code that I want to use for that
LOCAL loADOSTream as "ADODB.Stream"
loADOStream = CREATEOBJECT("ADODB.Stream")
*!* Set Stream Object properties.
loADOStream.TYPE = 1 && 1=Binary Data, 2=Text Data.
loADOStream.OPEN
Here I need to get the Handle, the memory pointer that ADO reserver for my
Stream
This handle will be passed to GDI+ further
m.lhStream = ?????????????????????
*!* Save the picture to the stream
loBmp.Save(m.lhStream, .Imaging.ImageFormat.Bmp) && Pass the stream handle
to Save method
lcPicture = ""
lcPicture = loADOStream.Read()
*!* Close connections.
loADOStream.CLOSE
My goal is to create an Image with GDI+ on the fly, and instead of saving it
to a file, to save it to a stream. Then I can retrieve the binaries from
that stream directly to the PictureVal property of an Image control.
Streams use some memory portions, and must have a handle, a pointer that can
be passed to the API GdipSaveImageToStream. That's what I want, the memory
pointer from the ADOdb.Stream object.
Any suggestion is very welcome
Cesar Chalom
My Blog
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