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*.TIFF again

I have to handle the bitmaps for thousands of *.TIFF file, which meant this must be done automatically by my VB codes. But VB does not support opening *.TIFF and I don't wanna mess up with decoding it myself.
How can I use any OCX that opens TIFF file and save it as other image file format automatically?
Or Can I use the imagebox/picturebox to somehow point at the image which be opened by the OCX application? So that I can make it appear on the imagebox/picturebox.
1 Solution
neuralAuthor Commented:
Edited text of question
neuralAuthor Commented:
Edited text of question
Do you need to open the *.TIFF files for view-only or do you need to save or even manipulate them, as well?
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there are some image processing OCXs, as PhotoProGold (at http://www.pegasustools.com).

BUT you will have to license TIFF (as well as GIF) at UNISYS.
This is the main link for more information: http://www.unisys.com/LeadStory/lzwfaq.html.

If you write a request to Cheryl Tartler (Unisys, cheryldtartler@unn.unisys.com), you will get further information.

It was the quite the same question than the previous.

Here is a web site where you can find sources written in C
to read Tiff files :

neural, waty,

I was wrong: There are different file formats of TIFF (= different algorithms).
Only TIFF (LZW) has to be licensed:

From PhotoPro's Help:
TIF (Tag Image File Format)

Reads 1,  4, 8, 16, 24 and 32-bit uncompressed TIF.
Writes 1, 4, 8 and 24-bit uncompressed TIF.
Reads and writes CCITT RLE, Group 3, and Group 4 compressed TIF.
Reads and writes 1, 4, 8 and 24-bit Pack Bits TIF.
Reads and writes 1, 4, 8 and 24-bit LZW TIF ***1***
Reads 24-bit JPEG TIF.
Reads and writes 1, 4, 8 and 24-bit deflate TIF.
16 and 32-bit TIF files are converted to 24-bit.
Reads multiple page TIF.

1 LZW licensing required from Unisys for GIF and LZW TIF formats.

In http://nic.zcu.cz/ftp/pub/simtelnet/msdos/tiff/dtiff.zip an EXE is included, which opens a TIFF file in the DOS screen. If the DOS screen had a device context, one could copy the contents to a Windows picture, but I think it hasn't.
Another possibility would be to capture the screen, but there's the same problem with the device context, and you've got the wrong dimensions.

After downloading a little Scanner/Print program, I detected:
If you installed a TWAIN compatible scanner (and its software), you DID install some OCXs, which DO have the ability to read TIFF files and save it in TIFF or other formats.
So I hope, you have a scanner :-)
Of course you cannot redistribute the OCXs.

I may send you the VB app, I've downloaded.

If you do not want to distribute your app, you may try some batch converting software, i.e. Jasc Image Robot (Shareware).

Another, poor, possibility is to open a TIFF file in the default image processing program (with ShellExecute), and then SendKeys.
I did it with some 100s of pictures before some times.
neuralAuthor Commented:
Seoding, thanks for replying my questions. I am trying to do that by the poor way-Sendkeys. And I am using the "Imaging" ocx to do that. But I will still have to do the "Open-->*.tif" and "save As *.bmp" by mouse clicking and there are thousands of *.Tiff files. Is there any way that I can specify the file name in the codes so that it will open and save from/into the filenames automatically? I believed that you didn't do that 100 files by mouse clicking.
hi there,

if you want to read all files from one directory (did I understand?), here is the code:

Private Declare Function ShellExecute Lib "shell32.dll" Alias _
"ShellExecuteA" (ByVal hWnd As Long, ByVal lpOperation As _
String, ByVal lpFile As String, ByVal lpParameters As String, _
ByVal lpDirectory As String, ByVal nShowCmd As Long) As Long

Dim x$
x = Dir(app.Path & "\" & "*.tif")
Do While x <> ""
  ShellExecute Me.Hwnd,"Open", x, "", app.Path, 1
  SendKeys "%f" & "a"
  ' % = ALT
  ' Try to simulate "File Save As"
  Sendkeys "{ENTER}"
 ' Do not forget to simulate "File close"
  DoEvents ' If there us any error, you can stop by "Ctrl+Alt+Del"

Good luck,
and if it does not work right now, post a comment again!
Any more questions? - You will reach your goal.
Thank you.
neuralAuthor Commented:
Dear Soeding: I am trying to figure out your code, and running a couple of experiments on that. Thank you for all the mails you sent me for helping out.

neuralAuthor Commented:
Dear Soeding, it worked. Thank you for everything.
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