2f4ed3b275
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_4_BRANCH@17586 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
56 lines
3.7 KiB
PHP
56 lines
3.7 KiB
PHP
\wxheading{Event table macros}
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To process a scroll event, use these event handler macros to direct input to
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member functions that take a wxScrollEvent argument. You can use
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{\tt EVT\_COMMAND\_SCROLL...} macros with window IDs for when intercepting
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scroll events from controls, or {\tt EVT\_SCROLL...} macros without window IDs
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for intercepting scroll events from the receiving window - except for this,
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the macros behave exactly the same.
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\twocolwidtha{9cm}
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\begin{twocollist}\itemsep=0pt
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\twocolitem{{\bf EVT\_SCROLL(func)}}{Process all scroll events.}
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\twocolitem{{\bf EVT\_SCROLL\_TOP(func)}}{Process wxEVT\_SCROLL\_TOP scroll-to-top events (minium position).}
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\twocolitem{{\bf EVT\_SCROLL\_BOTTOM(func)}}{Process wxEVT\_SCROLL\_TOP scroll-to-bottom events (maximum position).}
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\twocolitem{{\bf EVT\_SCROLL\_LINEUP(func)}}{Process wxEVT\_SCROLL\_LINEUP line up events.}
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\twocolitem{{\bf EVT\_SCROLL\_LINEDOWN(func)}}{Process wxEVT\_SCROLL\_LINEDOWN line down events.}
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\twocolitem{{\bf EVT\_SCROLL\_PAGEUP(func)}}{Process wxEVT\_SCROLL\_PAGEUP page up events.}
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\twocolitem{{\bf EVT\_SCROLL\_PAGEDOWN(func)}}{Process wxEVT\_SCROLL\_PAGEDOWN page down events.}
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\twocolitem{{\bf EVT\_SCROLL\_THUMBTRACK(func)}}{Process wxEVT\_SCROLL\_THUMBTRACK thumbtrack events (frequent events
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sent as the user drags the thumbtrack).}
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\twocolitem{{\bf EVT\_SCROLL\_THUMBRELEASE(func)}}{Process wxEVT\_SCROLL\_THUMBRELEASE thumb release events.}
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\twocolitem{{\bf EVT\_SCROLL\_ENDSCROLL(func)}}{Process wxEVT\_SCROLL\_ENDSCROLL end of scrolling events (MSW only).}
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\twocolitem{{\bf EVT\_COMMAND\_SCROLL(id, func)}}{Process all scroll events.}
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\twocolitem{{\bf EVT\_COMMAND\_SCROLL\_TOP(id, func)}}{Process wxEVT\_SCROLL\_TOP scroll-to-top events (minimum position).}
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\twocolitem{{\bf EVT\_COMMAND\_SCROLL\_BOTTOM(id, func)}}{Process wxEVT\_SCROLL\_TOP scroll-to-bottom events (maximum position).}
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\twocolitem{{\bf EVT\_COMMAND\_SCROLL\_LINEUP(id, func)}}{Process wxEVT\_SCROLL\_LINEUP line up events.}
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\twocolitem{{\bf EVT\_COMMAND\_SCROLL\_LINEDOWN(id, func)}}{Process wxEVT\_SCROLL\_LINEDOWN line down events.}
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\twocolitem{{\bf EVT\_COMMAND\_SCROLL\_PAGEUP(id, func)}}{Process wxEVT\_SCROLL\_PAGEUP page up events.}
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\twocolitem{{\bf EVT\_COMMAND\_SCROLL\_PAGEDOWN(id, func)}}{Process wxEVT\_SCROLL\_PAGEDOWN page down events.}
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\twocolitem{{\bf EVT\_COMMAND\_SCROLL\_THUMBTRACK(id, func)}}{Process wxEVT\_SCROLL\_THUMBTRACK thumbtrack events (frequent events
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sent as the user drags the thumbtrack).}
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\twocolitem{{\bf EVT\_COMMAND\_SCROLL\_THUMBRELEASE(func)}}{Process wxEVT\_SCROLL\_THUMBRELEASE thumb release events.}
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\twocolitem{{\bf EVT\_COMMAND\_SCROLL\_ENDSCROLL(func)}}{Process wxEVT\_SCROLL\_ENDSCROLL end of scrolling events (MSW only).}
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\end{twocollist}%
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\wxheading{The difference between {\tt EVT\_SCROLL\_THUMBRELEASE} and {\tt EVT\_SCROLL\_ENDSCROLL}}
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The {\tt EVT\_SCROLL\_THUMBRELEASE} event is only emitted when actually dragging
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the thumb using the mouse and releasing it (This {\tt EVT\_SCROLL\_THUMBRELEASE}
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event is also followed by an {\tt EVT\_SCROLL\_ENDSCROLL} event).
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The {\tt EVT\_SCROLL\_ENDSCROLL} event also occurs when using the keyboard to
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change the thumb position, and when clicking next to the thumb (In all these
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cases the {\tt EVT\_SCROLL\_THUMBRELEASE} event does not happen).
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In short, the {\tt EVT\_SCROLL\_ENDSCROLL} event is triggered when scrolling/
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moving has finished. The only exception (unfortunately) is that changing the
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thumb position using the mousewheel does give a {\tt EVT\_SCROLL\_THUMBRELEASE}
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event but NOT an {\tt EVT\_SCROLL\_ENDSCROLL} event.
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Please see the widgets sample ("Slider" page) to see the difference
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between {\tt EVT\_SCROLL\_THUMBRELEASE} and {\tt EVT\_SCROLL\_ENDSCROLL} in action.
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