HOW TO DELETE AN IMAGE FROM SOURCE?

[kucey]

I use Native translate mode to Download Image From Source.When the Image had been downloaded I need to delete this image .How can I do?
Which information do I send to the source???
Thank you very much!!!

[TheCrow99]

you mean native transFER mode right?
Do you save the image or do you just transfer it and display it?
once the image has been send, the source doesn’t really have anything to do with the image anymore, so I don’t think there is anything you should/could send to the source.
what source are we talking about? scanner?

[kucey]

Yes I save the image in the Disk.
The sourse is Digital Camera
I want to delete image form Camera.What can I do?

[TheCrow99]

aha ok now I get it;
hmm…I think DAT_FILESYSTEM MSG_DELETE should do the job, but I am not sure because I have never had anything to do with a digi cam.
Just check on it: twain spec 1.9 page A-519 has quite a few functions for dealing with files and folders

[kucey]

Thank you!
I use Version 1.8
I will try it.

[kucey]

When could I use the DAT_FILESYSTEM MSG_DELETE ?in which state?
Because I can’t find the DAT_FILESYSTEM in UserInterface.
The vsersion is 1.8

[TheCrow99]

have you checked if your source supports this capability?

[kucey]

I suprised why the userinterface allow me to delete the picture which I selected,but I can’t delete in my app.

[TheCrow99]

what return and condition code do you get when you try to delete a picture?

[kucey]

I can’t find the information of DAT_FILESYSTEM
There is not this chioce in the DG_Control when I open the source.

[TheCrow99]

can’t you check the return and condition code in your app?

[kucey]

I found that my twain doesn’t support the DATA of DAT_FILESYSTEM.
I need a new version higher than 1.8 but where can I download it?

[TheCrow99]

what do you actually mean with “MY TWAIN”? if you mean the twain driver for your camera -> look at the website of the company that made your camera if you mean your twain.h file is too old-> check http://www.twain.org

[kucey]

I use the version of twain.h is 1.8 but the version of twain_32.dll is 1.7.1,I don’t know which the version is actually?

[TheCrow99]

the version of the twain_32.dll should be ok, but get twain.h 1.9 from http://www.twain.org, that’s the latest version

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