Search Issue Tracker

Fixed in 2019.3.X

Votes

1

Found in

2018.1.2f1

Issue ID

1045195

Regression

No

[Windows] TreeView.HandleDragAndDrop(DragAndDropArgs args) is not called when the Cursor is dragging a Row

Windows

-

To reproduce:
1. Download attached project "TreeView Drag Bug.zip" and open in Unity
2. Open "scene_main" scene
3. Press Window > Open TreeView Test Window
4. Try Drag and Drop for example "Red" on "Blue"

Expected results: TreeView.HandleDragAndDrop(DragAndDropArgs args) would be called with 'args.dragAndDropPosition' equaling the correct DragAndDropPosition value (BetweenItems, OntoItem, etc)
Actual results: TreeView.HandleDragAndDrop(DragAndDropArgs args) is not called when the cursor is dragging a row. Instead, TreeView.HandleDragAndDrop(DragAndDropArgs args) is not called at all, and TreeView.SetupDragAndDrop(SetupDragAndDropArgs args) is called on MouseRelease instead of MouseDrag

Notes:
- This issue reproduces only on Windows
- Could not reproduce this issue on OSX because of this bug:
https://issuetracker.unity3d.com/issues/osx-no-drag-and-drop-has-been-setup-please-error-when-dragging-any-item-in-unity

Reproduced on Unity 2017.1.4f1, 2017.2.3p1, 2017.3.2f1, 2017.4.5f1, 2018.1.4f1, 2018.2.0b7 and 2018.3.0a1
Log in to vote on this issue

Comments (3)

  1. Firadzo

    Dec 14, 2018 11:37

    I am was able to receive TreeView.HandleDragAndDrop callback after calling DragAndDrop.StartDrag("Dragging") inside of SetupDragAndDrop.

  2. DrPhilippe

    Aug 29, 2018 12:08

    do it inside SetupDragAndDrop :)

  3. DrPhilippe

    Aug 29, 2018 12:08

    try this:

    DragAndDrop.activeControlID = args.draggedItemIDs[0];

Add comment

Log in to post comment

All about bugs

View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.

Latest issues

See all new issues