Re: Faulty Drag Data under QT?

[Bruce Steers <bsteers4@xxxxxxxxx>]

On Thu, 12 Feb 2026 at 13:15, Claus Dietrich <claus.dietrich@xxxxxxxxxx>
wrote:

> Am 12.02.26 um 12:35 schrieb Bruce Steers:
>
>
> On Thu, 12 Feb 2026, 10:52 Claus Dietrich, <claus.dietrich@xxxxxxxxxx>
> wrote:
>
>> When I drag a file from Nemo and drop it into my app (gb.gui.qt), the
>> following 3 lines ....
>>
>> Public Sub Form_Drop()
>>      Print "Drag.Type:"; Drag.Type
>>      Print Drag.Data
>> End
>>
>> deliver following strange output in the IDE console:
>> Drag.Type: 1
>> 0:-8:436:20e/claus/Bilder/Bildschirmfoto%20vom%202026-02-08%2016-09-59.png
>>
>> When I switch from gb.gui.qt to GTK+3 the IDE console output is
>> Drag.Type: 1
>> file:///home/claus/Bilder/Bildschirmfoto%20vom%202026-02-08%2016-09-59.png
>>
>> Do we have a bug here?
>> Best regards
>> Claus
>>
>
> No.
> Drag.Data is the raw data and it's format can vary depending on toolkit.
>
> You should avoid Drag.Data and use Drag.Paste
>
> Then you should get better results.
>
> Also remember Drag.Type is used mostly only to define between drag.image
> or some kind of text format.
>
> The format to use for drag.paste (the mime format) will be in either
> Drag.Format or one of Drag.Formats[]
>
> Drag.Type equaling Drag.Text does not mean you're going to get text/plain
> mime type.
>
> Respects
> BruceS
>
> Thanks! This helped me further, however ...
>
> The property Drag.Formats of dropped file paths from Nemo provides:
>
> index 0:      x-special/gnome-icon-list
> index 1:      text/uri-list
> index 2:      text/plain
> index 3:      text/plain;charset=utf-8
>
> Only when I use
>
>        Print Drag.Paste("text/plain;charset=utf-8")
>
> or
>
>        Print Drag.Paste("text/plain")
>
> I get usable plain file paths, which will do the job and I will go ahead
> with this in my app.
>
> However, what made me wondering was, that
>
>        Print Drag.Paste("text/uri-list")
>
> provided the same strange output like from the Data-Property. The context
> help to Drag.Paste says:
>
> "Since 3.18
>
> If *Format* is "text/uri-list", then the method returns a string array of
> file paths corresponding to the decoded URIs."
>
> This statement seems to be wrong because it returns a single string with
> all file paths delimited by a LF and the paths returned have the same
> strange format as provided by the Data property. So either this context
> help is wrong or this function is buggy.
>
> Do we really have to live with a difference between QT and GTK+3 in this
> context?
>
>
> Best regards
>
> Claus
>

No the wiki is correct.

   Print Drag.Paste("text/uri-list")

That will print a String[]

If i use that code I get this...

(String[] 0x63a0af63bd88)


Something like this should work better..

  If Drag.Formats.Exist("text/uri-list") Then Print
Drag.Paste("text/uri-list").Join("\n")    ' see what i did there


My last post explaining how to handle text/uri-list should help clear
things up for you.

By using code like this..

Dim aFiles As String[] = Drag.Paste("text/uri-list")

aFiles is like the wiki says. An Array of file paths, no file:// prefix. on
both toolkits.

Respects

BruceS