-\section{Drag'n'Drop overview}\label{wxdndoverview}
+\section{Drag and drop overview}\label{wxdndoverview}
Classes: \helpref{wxDataObject}{wxdataobject},
\helpref{wxTextDataObject}{wxtextdataobject},
\helpref{wxFileDropTarget}{wxfiledroptarget}
Note that wxUSE\_DRAG\_AND\_DROP must be defined in setup.h in order
-to use Drag'n'Drop in wxWindows.
+to use drag and drop in wxWidgets.
See also: \helpref{wxDataObject overview}{wxdataobjectoverview} and \helpref{DnD sample}{samplednd}
It may be noted that data transfer to and from the clipboard is quite
-similar to data transfer with Drag'n'Drop and the code to implement
+similar to data transfer with drag and drop and the code to implement
these two types is almost the same. In particular, both data transfer
mechanisms store data in some kind of \helpref{wxDataObject}{wxdataobject}
and identify its format(s) using the \helpref{wxDataFormat}{wxdataformat}
class.
To be a {\it drag source}, i.e. to provide the data which may be dragged by
-user elsewhere, you should implement the following steps:
+the user elsewhere, you should implement the following steps:
\begin{itemize}\itemsep=0pt
\item {\bf Preparation:} First of all, a data object must be created and
\begin{verbatim}
wxTextDataObject my_data("This text will be dragged.");
\end{verbatim}
-\item{\bf Drag start:} To start dragging process (typically in response to a
+\item{\bf Drag start:} To start the dragging process (typically in response to a
mouse click) you must call \helpref{wxDropSource::DoDragDrop}{wxdropsourcedodragdrop}
like this:
dragSource.SetData( my_data );
wxDragResult result = dragSource.DoDragDrop( TRUE );
\end{verbatim}
-\item {\bf Dragging:} The call to DoDragDrop() blocks the program until the user release the
-mouse button (unless you override \helpref{GiveFeedback}{wxdropsourcegivefeedback} function
+\item {\bf Dragging:} The call to DoDragDrop() blocks the program until the user releases the
+mouse button (unless you override the \helpref{GiveFeedback}{wxdropsourcegivefeedback} function
to do something special). When the mouse moves in a window of a program which understands the
same drag-and-drop protocol (any program under Windows or any program supporting the
XDnD protocol under X Windows), the corresponding \helpref{wxDropTarget}{wxdroptarget} methods
case wxDragMove: /* move the data */ break;
default: /* do nothing */ break;
}
-\end{verbatim}
+\end{verbatim}%
\end{itemize}
-To be a {\it drop target}, i.e. to receive the data dropped by user you should
+To be a {\it drop target}, i.e. to receive the data dropped by the user you should
follow the instructions below:
\begin{itemize}\itemsep=0pt
-\item {\bf Initialization:} For a window to be drop target, it needs to have
+\item {\bf Initialization:} For a window to be a drop target, it needs to have
an associated \helpref{wxDropTarget}{wxdroptarget} object. Normally, you will
call \helpref{wxWindow::SetDropTarget}{wxwindowsetdroptarget} during window
-creation associating you drop target with it. You must derive a class from
+creation associating your drop target with it. You must derive a class from
wxDropTarget and override its pure virtual methods. Alternatively, you may
derive from \helpref{wxTextDropTarget}{wxtextdroptarget} or
\helpref{wxFileDropTarget}{wxfiledroptarget} and override their OnDropText()
or OnDropFiles() method.
-\item {\bf Drop:} When the user releases the mouse over a window, wxWindows
-queries the associated wxDropTarget object if it accepts the data. For this,
+\item {\bf Drop:} When the user releases the mouse over a window, wxWidgets
+asks the associated wxDropTarget object if it accepts the data. For this,
a \helpref{wxDataObject}{wxdataobject} must be associated with the drop target
and this data object will be responsible for the format negotiation between
the drag source and the drop target. If all goes well, then \helpref{OnData}{wxdroptargetondata}
will get called and the wxDataObject belonging to the drop target can get
filled with data.
\item {\bf The end:} After processing the data, DoDragDrop() returns either
-wxDragCopy or wxDragMove depending on the state of the keys (<Ctrl>, <Shift>
-and <Alt>) at the moment of drop. There is currently no way for the drop
+wxDragCopy or wxDragMove depending on the state of the keys <Ctrl>, <Shift>
+and <Alt> at the moment of the drop. There is currently no way for the drop
target to change this return code.
\end{itemize}