• You are here:  
  • Home
  • Q&A
  • Q&A
  • PowerBuilder
  • How to get the ListView Index from a Drag/Drop File Operation?

Subscribe via RSS
Toggle Submenu
  1. Categories
  2. Recent
  3. Tags
View Replies (3)

Resolved How to get the ListView Index from a Drag/Drop File Operation?

  1. How-to
0
Votes
Undo
  1. Christopher Craft
    Christopher Craft
  2. PowerBuilder
  3. Wednesday, 4 January 2023 01:05 AM UTC

PB 2019 R3 2728

I am implementing a drag/drop file feature using DragAcceptFiles() but have run into a problem.  I am using a ListView to display a list of document types for the user to drop files onto.  This will then auto associate those files to the document type they dropped it on.  What I am running into is I cannot get the ListView Index once the file has been dropped.  I thought there would be a GetObjectAtPointer() call but that is only valid for the DW.  The pbm_lButtonUp event has the X/Y position but I am unable to figure out how to get the ListView index from that. It seems all the ListView events that deal with drag/drop are only fired if starting in that control – not when coming from the outside.  Has anyone done anything like this?

 

I know I can use a DataWindow control which has the GetObjectAtPointer() but I need this list to auto expand/collapse depending on the size of the window so it rules that out (unless I have no other option).

Thank you,

Chris Craft

Powerbuilder 2019 Email issue with Application Exe...
XML Runtime path cloud deployment
Responses (3)
Roland Smith
Roland Smith Accepted Answer Pending Moderation
  1. Wednesday, 4 January 2023 16:26 PM UTC
  2. PowerBuilder
  3. # 1

What 'view' are you using? The values are: ListViewReport!, ListViewList!, ListViewLargeIcon!, ListViewSmallIcon!.

 

The dragdrop event gives you the item index. I'm actually working on a window right now that has drag drop between two listview controls.

Comment
Christopher Craft
  1. Christopher Craft
  2. Wednesday, 4 January 2023 16:41 PM UTC
I am using ListViewLargeIcon!



If you are dragging between 2 controls within your application then I can get the Index using the DragWithin event. The issue is I am dragging from File Explorer into the ListView which does not trigger that event. If I could get that event to fire then I would be good!
  1. Helpful
mike S
  1. mike S
  2. Wednesday, 4 January 2023 16:50 PM UTC
it triggers pbm_dropfiles (custom event) not dragdrop
  1. Helpful
mike S
  1. mike S
  2. Wednesday, 4 January 2023 17:00 PM UTC
Chris basically needs to know what index the pointer is on in the listview. The fact that this is occurring in a pbm_dropfiles event is irrelevant.
  1. Helpful
There are no comments made yet.
Christopher Craft
Christopher Craft Accepted Answer Pending Moderation
  1. Wednesday, 4 January 2023 01:40 AM UTC
  2. PowerBuilder
  3. # 2

I attached an example.  The ListView will auto adjust from 2 rows with 2 items on a row to 1 row with 3 items on the row when the window expands.  The DW does not do this.

Attachments (1)
ListView.pdf
Comment
Chris Pollach @Appeon
  1. Chris Pollach @Appeon
  2. Wednesday, 4 January 2023 03:13 AM UTC
FWIW: I would just change the DWO (and thus it's type / display ) as the DC's resized and space dictates. Food for thought. ;-)
  1. Helpful
Christopher Craft
  1. Christopher Craft
  2. Wednesday, 4 January 2023 15:56 PM UTC
So you are telling me it is impossible to determine the Index in the ListView from a drag/drop situation. I will log an Enhancement request for this.

  1. Helpful
Chris Pollach @Appeon
  1. Chris Pollach @Appeon
  2. Wednesday, 4 January 2023 16:13 PM UTC
No, just that the DWO (IMHO) is normally easier & more flexible to use.

For the ListView you have... .

1) Clicked Event

2) ColumnClick Event

3) ITEM[] array property

4) GetItem() / SetItem() methods, etc..

5) GetColumn(), SetColumn(), methods, etc.

So with the above, you should be able to introspect the LV Control entries. Just my W$0.02

Regards ... Chris



  1. Helpful
There are no comments made yet.
Chris Pollach @Appeon
Chris Pollach @Appeon Accepted Answer Pending Moderation
  1. Wednesday, 4 January 2023 01:18 AM UTC
  2. PowerBuilder
  3. # 3

Hi Chris;

  I don't understand why the DC/DWO approach would not work! Especially, on the auto expand/collapse feature aspect which the ListView does not have. Are you talking about a TreeView control instead?

    Can you expand on the overall design aspects (look & feel) that your after? Maybe that would clarify your question better. Thanks!

Regards .... Chris 

Comment
There are no comments made yet.
  • Page :
  • 1


There are no replies made for this question yet.
However, you are not allowed to reply to this question.