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Documentation: add details about handling of FL_DND_RELEASE event

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see also STR #3399.
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ManoloFLTK 2024-05-13 14:58:14 +02:00
parent 5b3dd72e4e
commit a28a7c381d
1 changed files with 8 additions and 2 deletions
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documentation/src/events.dox
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@ -342,8 +342,14 @@ The mouse has moved out of the widget.
\subsection events_fl_dnd_release FL_DND_RELEASE
The user has released the mouse button dropping data into
the widget. If the widget returns 1, it will receive the data in
the immediately following \p FL_PASTE event.
the widget. When the receiving widget's handle() method gets the FL_DND_RELEASE
event, it should return 1 to accept the dragged data. Processing of this event must not
use code that would make unrelated events be sent to the application
(opening a dialog window for example) or that
would communicate with the dragging process. The next
event received by the handle() method will then be an FL_PASTE event.
The handle() method should process this FL_PASTE event rapidly to prevent the dragging
process from failing with a timeout error.
\section events_fl_misc Other events