wxWidgets/docs/latex/wx/scrolevt.tex
Robert Roebling 530a7383f2 Many plot window gooddies.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6023 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2000-02-15 09:37:39 +00:00

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\section{\class{wxScrollEvent}}\label{wxscrollevent}
A scroll event holds information about events sent from stand-alone scrollbars,
spin-buttons and sliders - starting from wxWindows 2.1, scrolled windows send the
\helpref{wxScrollWinEvent}{wxscrollwinevent} which does not derive from
wxCommandEvent, but from wxEvent directly.
\wxheading{Derived from}
\helpref{wxCommandEvent}{wxcommandevent}\\
\helpref{wxEvent}{wxevent}\\
\helpref{wxObject}{wxobject}
\wxheading{Include files}
<wx/event.h>
\wxheading{Event table macros}
To process a scroll event, use these event handler macros to direct input to member
functions that take a wxScrollEvent argument. You can use EVT\_COMMAND\_SCROLL... macros
with window IDs for when intercepting scroll events from controls, or EVT\_SCROLL... macros
without window IDs for intercepting scroll events from the receiving window.
\twocolwidtha{7cm}
\begin{twocollist}\itemsep=0pt
\twocolitem{{\bf EVT\_SCROLL(func)}}{Process all scroll events.}
\twocolitem{{\bf EVT\_SCROLL\_TOP(func)}}{Process wxEVT\_SCROLL\_TOP scroll-to-top events.}
\twocolitem{{\bf EVT\_SCROLL\_BOTTOM(func)}}{Process wxEVT\_SCROLL\_TOP scroll-to-bottom events.}
\twocolitem{{\bf EVT\_SCROLL\_LINEUP(func)}}{Process wxEVT\_SCROLL\_LINEUP line up events.}
\twocolitem{{\bf EVT\_SCROLL\_LINEDOWN(func)}}{Process wxEVT\_SCROLL\_LINEDOWN line down events.}
\twocolitem{{\bf EVT\_SCROLL\_PAGEUP(func)}}{Process wxEVT\_SCROLL\_PAGEUP page up events.}
\twocolitem{{\bf EVT\_SCROLL\_PAGEDOWN(func)}}{Process wxEVT\_SCROLL\_PAGEDOWN page down events.}
\twocolitem{{\bf EVT\_SCROLL\_THUMBTRACK(func)}}{Process wxEVT\_SCROLL\_THUMBTRACK thumbtrack events (frequent events
sent as the user drags the thumtrack).}
\twocolitem{{\bf EVT\_SCROLL\_THUMBRELEASE(func)}}{Process wxEVT\_SCROLL\_THUMBRELEASE thumb release events.}
\twocolitem{{\bf EVT\_COMMAND\_SCROLL(id, func)}}{Process all scroll events.}
\twocolitem{{\bf EVT\_COMMAND\_SCROLL\_TOP(id, func)}}{Process wxEVT\_SCROLL\_TOP scroll-to-top events.}
\twocolitem{{\bf EVT\_COMMAND\_SCROLL\_BOTTOM(id, func)}}{Process wxEVT\_SCROLL\_TOP scroll-to-bottom events.}
\twocolitem{{\bf EVT\_COMMAND\_SCROLL\_LINEUP(id, func)}}{Process wxEVT\_SCROLL\_LINEUP line up events.}
\twocolitem{{\bf EVT\_COMMAND\_SCROLL\_LINEDOWN(id, func)}}{Process wxEVT\_SCROLL\_LINEDOWN line down events.}
\twocolitem{{\bf EVT\_COMMAND\_SCROLL\_PAGEUP(id, func)}}{Process wxEVT\_SCROLL\_PAGEUP page up events.}
\twocolitem{{\bf EVT\_COMMAND\_SCROLL\_PAGEDOWN(id, func)}}{Process wxEVT\_SCROLL\_PAGEDOWN page down events.}
\twocolitem{{\bf EVT\_COMMAND\_SCROLL\_THUMBTRACK(id, func)}}{Process wxEVT\_SCROLL\_THUMBTRACK thumbtrack events (frequent events
sent as the user drags the thumtrack).}
\end{twocollist}%
\wxheading{Remarks}
Note that unless specifying a scroll control identifier, you will need to test for scrollbar
orientation with \helpref{wxScrollEvent::GetOrientation}{wxscrolleventgetorientation}, since
horizontal and vertical scroll events are processed using the same event handler.
\wxheading{See also}
\helpref{wxScrollBar}{wxscrollbar}, \helpref{wxSlider}{wxslider}, \helpref{wxSpinButton}{wxspinbutton}, \\
\helpref{wxScrollWinEvent}{wxscrollwinevent}, \helpref{Event handling overview}{eventhandlingoverview}
\latexignore{\rtfignore{\wxheading{Members}}}
\membersection{wxScrollEvent::wxScrollEvent}
\func{}{wxScrollEvent}{\param{WXTYPE }{commandType = 0}, \param{int }{id = 0}, \param{int}{ pos = 0},
\rtfsp\param{int}{ orientation = 0}}
Constructor.
\membersection{wxScrollEvent::GetOrientation}\label{wxscrolleventgetorientation}
\constfunc{int}{GetOrientation}{\void}
Returns wxHORIZONTAL or wxVERTICAL, depending on the orientation of the scrollbar.
\membersection{wxScrollEvent::GetPosition}\label{wxscrolleventgetposition}
\constfunc{int}{GetPosition}{\void}
Returns the position of the scrollbar.