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1 | \section{\class{wxScrollEvent}}\label{wxscrollevent} | |
2 | ||
3 | A scroll event holds information about events sent from stand-alone | |
4 | scrollbars, spin-buttons and sliders. Note that starting from wxWindows 2.1, | |
5 | scrolled windows send the \helpref{wxScrollWinEvent}{wxscrollwinevent} which | |
6 | does not derive from wxCommandEvent, but from wxEvent directly - don't confuse | |
7 | these two kinds of events and use the event table macros mentioned below only | |
8 | for the scrollbar-like controls. | |
9 | ||
10 | \wxheading{Derived from} | |
11 | ||
12 | \helpref{wxCommandEvent}{wxcommandevent}\\ | |
13 | \helpref{wxEvent}{wxevent}\\ | |
14 | \helpref{wxObject}{wxobject} | |
15 | ||
16 | \wxheading{Include files} | |
17 | ||
18 | <wx/event.h> | |
19 | ||
20 | \wxheading{Event table macros} | |
21 | ||
22 | To process a scroll event, use these event handler macros to direct input to | |
23 | member functions that take a wxScrollEvent argument. You can use | |
24 | {\tt EVT\_COMMAND\_SCROLL...} macros with window IDs for when intercepting | |
25 | scroll events from controls, or {\tt EVT\_SCROLL...} macros without window IDs | |
26 | for intercepting scroll events from the receiving window - except for this, | |
27 | the macros behave exactly the same | |
28 | ||
29 | \twocolwidtha{7cm} | |
30 | \begin{twocollist}\itemsep=0pt | |
31 | \twocolitem{{\bf EVT\_SCROLL(func)}}{Process all scroll events.} | |
32 | \twocolitem{{\bf EVT\_SCROLL\_TOP(func)}}{Process wxEVT\_SCROLL\_TOP scroll-to-top events.} | |
33 | \twocolitem{{\bf EVT\_SCROLL\_BOTTOM(func)}}{Process wxEVT\_SCROLL\_TOP scroll-to-bottom events.} | |
34 | \twocolitem{{\bf EVT\_SCROLL\_LINEUP(func)}}{Process wxEVT\_SCROLL\_LINEUP line up events.} | |
35 | \twocolitem{{\bf EVT\_SCROLL\_LINEDOWN(func)}}{Process wxEVT\_SCROLL\_LINEDOWN line down events.} | |
36 | \twocolitem{{\bf EVT\_SCROLL\_PAGEUP(func)}}{Process wxEVT\_SCROLL\_PAGEUP page up events.} | |
37 | \twocolitem{{\bf EVT\_SCROLL\_PAGEDOWN(func)}}{Process wxEVT\_SCROLL\_PAGEDOWN page down events.} | |
38 | \twocolitem{{\bf EVT\_SCROLL\_THUMBTRACK(func)}}{Process wxEVT\_SCROLL\_THUMBTRACK thumbtrack events (frequent events | |
39 | sent as the user drags the thumbtrack).} | |
40 | \twocolitem{{\bf EVT\_SCROLL\_THUMBRELEASE(func)}}{Process wxEVT\_SCROLL\_THUMBRELEASE thumb release events.} | |
41 | \twocolitem{{\bf EVT\_COMMAND\_SCROLL(id, func)}}{Process all scroll events.} | |
42 | \twocolitem{{\bf EVT\_COMMAND\_SCROLL\_TOP(id, func)}}{Process wxEVT\_SCROLL\_TOP scroll-to-top events.} | |
43 | \twocolitem{{\bf EVT\_COMMAND\_SCROLL\_BOTTOM(id, func)}}{Process wxEVT\_SCROLL\_TOP scroll-to-bottom events.} | |
44 | \twocolitem{{\bf EVT\_COMMAND\_SCROLL\_LINEUP(id, func)}}{Process wxEVT\_SCROLL\_LINEUP line up events.} | |
45 | \twocolitem{{\bf EVT\_COMMAND\_SCROLL\_LINEDOWN(id, func)}}{Process wxEVT\_SCROLL\_LINEDOWN line down events.} | |
46 | \twocolitem{{\bf EVT\_COMMAND\_SCROLL\_PAGEUP(id, func)}}{Process wxEVT\_SCROLL\_PAGEUP page up events.} | |
47 | \twocolitem{{\bf EVT\_COMMAND\_SCROLL\_PAGEDOWN(id, func)}}{Process wxEVT\_SCROLL\_PAGEDOWN page down events.} | |
48 | \twocolitem{{\bf EVT\_COMMAND\_SCROLL\_THUMBTRACK(id, func)}}{Process wxEVT\_SCROLL\_THUMBTRACK thumbtrack events (frequent events | |
49 | sent as the user drags the thumbtrack).} | |
50 | \twocolitem{{\bf EVT\_COMMAND\_SCROLL\_THUMBRELEASE(func)}}{Process wxEVT\_SCROLL\_THUMBRELEASE thumb release events.} | |
51 | \end{twocollist}% | |
52 | ||
53 | \wxheading{Remarks} | |
54 | ||
55 | Note that unless specifying a scroll control identifier, you will need to test for scrollbar | |
56 | orientation with \helpref{wxScrollEvent::GetOrientation}{wxscrolleventgetorientation}, since | |
57 | horizontal and vertical scroll events are processed using the same event handler. | |
58 | ||
59 | \wxheading{See also} | |
60 | ||
61 | \helpref{wxScrollBar}{wxscrollbar}, \helpref{wxSlider}{wxslider}, \helpref{wxSpinButton}{wxspinbutton}, \\ | |
62 | \helpref{wxScrollWinEvent}{wxscrollwinevent}, \helpref{Event handling overview}{eventhandlingoverview} | |
63 | ||
64 | \latexignore{\rtfignore{\wxheading{Members}}} | |
65 | ||
66 | \membersection{wxScrollEvent::wxScrollEvent} | |
67 | ||
68 | \func{}{wxScrollEvent}{\param{WXTYPE }{commandType = 0}, \param{int }{id = 0}, \param{int}{ pos = 0}, | |
69 | \rtfsp\param{int}{ orientation = 0}} | |
70 | ||
71 | Constructor. | |
72 | ||
73 | \membersection{wxScrollEvent::GetOrientation}\label{wxscrolleventgetorientation} | |
74 | ||
75 | \constfunc{int}{GetOrientation}{\void} | |
76 | ||
77 | Returns wxHORIZONTAL or wxVERTICAL, depending on the orientation of the scrollbar. | |
78 | ||
79 | \membersection{wxScrollEvent::GetPosition}\label{wxscrolleventgetposition} | |
80 | ||
81 | \constfunc{int}{GetPosition}{\void} | |
82 | ||
83 | Returns the position of the scrollbar. | |
84 |