Convert PDF to TIFF in VB6

What's the best way to convert a PDF to TIFF in Visual Basic 6? (Yes, I know VB6 is obsolete!) Free is preferred, of course, but I am willing to pay a nominal fee for a conversion DLL or OCX.

An actual VB6 code sample would be most appreciated!

Is GhostScript the way to go? That's Open Source Software, correct?
morganc1Asked:
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mohan_sekarCommented:
You got it right :) Ghostscript can do the job

Just download and install Ghostscript. Then use ShellExecute to call the below command

"C:\Program Files\gs\gs8.64\bin\gswin32c.exe" -dNOPAUSE -dBATCH -r550x450 -sDEVICE=tiffg4 -sPAPERSIZE=letter -dCOLORSCREEN=0 -dDITHERPPI=204 -dQUIET -sOutputFile="c:\test-%03d.tif" "c:\test.pdf"

NOTE: Change the location of gswin32c.exe to wherever you install GS and change the name of pdf and tif files. You can play around with other parameters. Ghost script manual online is a good start.
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morganc1Author Commented:
Thanks for the info!

 Is the invocation syntax example you provide the preferred interface, as opposed to some kind of DLL call (as seen in the GS documentation)?

Also, I am not familiar with ShellExecute, but have used Shell. Is there a compelling reason to use the former over the latter?
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mohan_sekarCommented:
This link will outline the differences between Shell and ShellExecute - http://www.bigresource.com/Tracker/Track-vb-nabuCpTwIN/ 

You'll have to call the said "exe" from your VB6 program.
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morganc1Author Commented:
Thanks for the link.

I understand ShellExecute by default invokes the default app associated with the file extension, but in this case we're running an *.exe. So here there's really no advantage to using ShellExecute over Shell, is there? And with ShellExecute (as with Shell), you still have to code a timeout if you need to wait for the task (pid) to complete, right?

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