Problem converting a BMP to a JPG on the fly

[tedsmith]

I have been having problems trying to convert a BMP to a JPG without going through the step of saving it to disk.
I tried the example in thread222-1335999: How do I convert a BMP to JPG stream (that is now closed) but get errors depending on what version of the GDI library I used.

In the example,
GDI+ Type Library 1.31 (6/2/2003) gives "Sub or function not found" on the statement
Set myStream = CreateStreamOnHGlobal(b(0), True)
whereas,
GDI+ Type Library 1.05 (11/9/2003) gives "Cant find project or library" on the line
Private Function GetEncoderCLSID(ByVal strMimeType As String, outCLSID As CLSID) As Long
What did I do wrong?
I tried various manipulations of the CreateStreamOnHGlobal without success.
Maybe I have the wrong or conflicting references entered?
Any help would be greatly appreciated.

 

[strongm]

Ted,

I think I've found the problem. You need to go here

http://www.mvps.org/emorcillo/en/code/vb6/index.shtml

to download OLELIB.TLB - OLE interfaces & functions v1.7

Register both the included libraries, then add a reference in your project to Edanmo's OLE interfaces and functions v1.81[\b].


Basically I originally used the API's CreateStreamOnHGlobal, but couldn't get it working reliably so started testing with the Edanmo type library which worked fine - but forgot to update my documentation ...

Note that a tlb does not need to be redistributed with your application

 

[tedsmith]

Thanks