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MTP (Media transfer protocol) in Delphi

Posted on 2014-03-19
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Last Modified: 2014-11-23
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All is working fine, except I now find one thing is missing - I need to be able to  create folders on the device.

So I need to the code that would do this, or preferably just update the demo project to include an example (via another button)
mtp10.zip
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Question by:Clyde24
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Expert Comment

by:Sinisa Vuk
ID: 39940824
So... added create folder functionality and fix some stuff.
this is done as recursive function (again) - so you can add full path with few sub-folders which doesn't exists at all.

It is very similar to copy file to specific folder on device....
mtp11.zip
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Author Comment

by:Clyde24
ID: 39941062
Unfortunately the new code in V11 won't compile for me (V10 is still OK).

error1
error2error2.png
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Expert Comment

by:Sinisa Vuk
ID: 39941111
And if you declare function like
function TForm12.GetDeviceId: WideString;
...

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Author Comment

by:Clyde24
ID: 39941415
OK, it compiles but I can't create any folders. For example in the "create spec. folder" box I have:

s10001\Pictures\test

But I get the error "cannot create destination folder"

attached is the log
log.txt
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Accepted Solution

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Sinisa Vuk earned 1500 total points
ID: 39942220
Try this new one. Fixed few things... and Pos compile error too.
mtp12.zip
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Author Comment

by:Clyde24
ID: 39943980
Strange - it works when creating a folder in the root "s10001", but not anywhere deeper

For example entering the following works:

s10001\test

However, the following does not:

s10001\pictures\test

Log is attached
log.txt
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LVL 28

Expert Comment

by:Sinisa Vuk
ID: 39944016
Strange indeed. Works on my android phone, sd card, usb ...
But I have exposed drive letter, folders/files are with a real names....
Will look....
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Author Comment

by:Clyde24
ID: 39944691
... also another issue I noticed - I Need to know the exact name of the device as shown in Windows explorer. For example, I have a "Garmin Oregon 650" GPSr unit connected:

gpsr
However, when I interrogate the mtp_demo log I can't see this exact reference (the 650 is missing, which is very important as that is the model number):

FriendlyName len=7
FriendlyName=GARMIN
DeviceDescription len=13
DeviceDescription=Oregon Flash

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How can we get the exact name as shown by Windows explorer
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LVL 28

Expert Comment

by:Sinisa Vuk
ID: 39945155
Can you post log for this Garmin issue....
using this newer example...
mtp13.zip
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Author Comment

by:Clyde24
ID: 39946653
log attached
log.txt
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LVL 101

Expert Comment

by:mlmcc
ID: 40461049
I've requested that this question be deleted for the following reason:

The question has either no comments or not enough useful information to be called an "answer".
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Author Closing Comment

by:Clyde24
ID: 40461050
I changed the code to just delete a single folder and it worked
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