I am unaware of any changes starting with v17 (I presume R4) but in general, the way to process drag and drop over a picture is:
On After Edit: accept native drop or paste. On Drop: accept custom drag and drop. $0 must be assigned 0 in On Drag Over. On Drag Over: check if Pasteboard data size is not negative On Begin Drag Over: append custom data to pasteboard (start custom drag and drop) --- I recall there were some special refactoring in 17 R4 to support the 10.12 to 10.14 range on Mac. but the implementation should be transparent to the 4D language. > 2019/06/14 6:06、David Ringsmuth via 4D_Tech <[email protected]>のメール: > > I know some things have changed with v17.4 drag and drop. > > When I enable a form picture object to accept drop, and I trace the “on drop” > database method, nothing happens in the form, object method or on-drop > database method. ********************************************************************** 4D Internet Users Group (4D iNUG) Archive: http://lists.4d.com/archives.html Options: https://lists.4d.com/mailman/options/4d_tech Unsub: mailto:[email protected] **********************************************************************
