X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/7af3ca164537ce06c7df5f9923a53a0d82e21cd0..97ad053bffe0fe5d8862578bae4e7492592b5702:/docs/latex/wx/keyevent.tex

diff --git a/docs/latex/wx/keyevent.tex b/docs/latex/wx/keyevent.tex
index ebec275204..01a3ac89f2 100644
--- a/docs/latex/wx/keyevent.tex
+++ b/docs/latex/wx/keyevent.tex
@@ -2,7 +2,7 @@
 
 This event class contains information about keypress (character) events.
 
-Notice that there are three different kinds of keyboard events in wxWindows:
+Notice that there are three different kinds of keyboard events in wxWidgets:
 key down and up events and char events. The difference between the first two
 is clear - the first corresponds to a key press and the second to a key
 release - otherwise they are identical. Just note that if the key is
@@ -17,11 +17,6 @@ from the \helpref{keycodes table}{keycodes}. The translated key is, in
 general, the character the user expects to appear as the result of the key
 combination when typing the text into a text entry zone, for example.
 
-If the key up event is caught and the event handler does not call
-event.Skip() then the coresponding char event will not happen.  This
-is by design and enables the programs that handle both types of events
-to be a bit simpler.
-
 A few examples to clarify this (all assume that {\sc Caps Lock} is unpressed
 and the standard US keyboard): when the {\tt 'A'} key is pressed, the key down
 event key code is equal to {\tt ASCII A} $== 65$. But the char event key code
@@ -42,13 +37,19 @@ same key code {\tt 'a'} as usual but the char event will have key code of
 $1$, the ASCII value of this key combination.
 
 You may discover how the other keys on your system behave interactively by
-running the \helpref{text}{sampletext} wxWindows sample and pressing some keys
+running the \helpref{text}{sampletext} wxWidgets sample and pressing some keys
 in any of the text controls shown in it.
 
-{\bf Note for Windows programmers:} The key and char events in wxWindows are
+{\bf Note:} If a key down ({\tt EVT\_KEY\_DOWN}) event is caught and
+the event handler does not call {\tt event.Skip()} then the corresponding
+char event ({\tt EVT\_CHAR}) will not happen.  This is by design and
+enables the programs that handle both types of events to be a bit
+simpler.
+
+{\bf Note for Windows programmers:} The key and char events in wxWidgets are
 similar to but slightly different from Windows {\tt WM\_KEYDOWN} and
 {\tt WM\_CHAR} events. In particular, Alt-x combination will generate a char
-event in wxWindows (unless it is used as an acclerator).
+event in wxWidgets (unless it is used as an accelerator).
 
 {\bf Tip:} be sure to call {\tt event.Skip()} for events that you don't process in
 key event function, otherwise menu shortcuts may cease to work under Windows.
@@ -77,75 +78,170 @@ functions that take a wxKeyEvent argument.
 
 \latexignore{\rtfignore{\wxheading{Members}}}
 
-\membersection{wxKeyEvent::m\_altDown}
+
+\membersection{wxKeyEvent::m\_altDown}\label{wxkeyeventmaltdown}
 
 \member{bool}{m\_altDown}
 
-TRUE if the Alt key is pressed down.
+\textbf{Deprecated: } Please use \helpref{GetModifiers}{wxkeyeventgetmodifiers}
+instead!
+
+true if the Alt key is pressed down.
 
-\membersection{wxKeyEvent::m\_controlDown}
+
+\membersection{wxKeyEvent::m\_controlDown}\label{wxkeyeventmcontroldown}
 
 \member{bool}{m\_controlDown}
 
-TRUE if control is pressed down.
+\textbf{Deprecated: } Please use \helpref{GetModifiers}{wxkeyeventgetmodifiers}
+instead!
+
+true if control is pressed down.
 
-\membersection{wxKeyEvent::m\_keyCode}
+
+\membersection{wxKeyEvent::m\_keyCode}\label{wxkeyeventmkeycode}
 
 \member{long}{m\_keyCode}
 
+\textbf{Deprecated: } Please use \helpref{GetKeyCode}{wxkeyeventgetkeycode}
+instead!
+
 Virtual keycode. See \helpref{Keycodes}{keycodes} for a list of identifiers.
 
-\membersection{wxKeyEvent::m\_metaDown}
+
+\membersection{wxKeyEvent::m\_metaDown}\label{wxkeyeventmmetadown}
 
 \member{bool}{m\_metaDown}
 
-TRUE if the Meta key is pressed down.
+\textbf{Deprecated: } Please use \helpref{GetModifiers}{wxkeyeventgetmodifiers}
+instead!
+
+true if the Meta key is pressed down.
 
-\membersection{wxKeyEvent::m\_shiftDown}
+
+\membersection{wxKeyEvent::m\_shiftDown}\label{wxkeyeventmshiftdown}
 
 \member{bool}{m\_shiftDown}
 
-TRUE if shift is pressed down.
+\textbf{Deprecated: } Please use \helpref{GetModifiers}{wxkeyeventgetmodifiers}
+instead!
+
+true if shift is pressed down.
 
-\membersection{wxKeyEvent::m\_x}
+
+\membersection{wxKeyEvent::m\_x}\label{wxkeyeventmx}
 
 \member{int}{m\_x}
 
+\textbf{Deprecated: } Please use \helpref{GetX}{wxkeyeventgetx} instead!
+
 X position of the event.
 
-\membersection{wxKeyEvent::m\_y}
+
+\membersection{wxKeyEvent::m\_y}\label{wxkeyeventmy}
 
 \member{int}{m\_y}
 
+\textbf{Deprecated: } Please use \helpref{GetY}{wxkeyeventgety} instead!
+
 Y position of the event.
 
-\membersection{wxKeyEvent::wxKeyEvent}
+
+\membersection{wxKeyEvent::wxKeyEvent}\label{wxkeyeventctor}
 
 \func{}{wxKeyEvent}{\param{WXTYPE}{ keyEventType}}
 
 Constructor. Currently, the only valid event types are wxEVT\_CHAR and wxEVT\_CHAR\_HOOK.
 
-\membersection{wxKeyEvent::AltDown}
+
+\membersection{wxKeyEvent::AltDown}\label{wxkeyeventaltdown}
 
 \constfunc{bool}{AltDown}{\void}
 
-Returns TRUE if the Alt key was down at the time of the key event.
+Returns true if the Alt key was down at the time of the key event.
+
+Notice that \helpref{GetModifiers}{wxkeyeventgetmodifiers} is easier to use
+correctly than this function so you should consider using it in new code.
+
+
+\membersection{wxKeyEvent::CmdDown}\label{wxkeyeventcmddown}
+
+\constfunc{bool}{CmdDown}{\void}
+
+\textsc{Cmd} is a pseudo key which is the same as Control for PC and Unix
+platforms but the special \textsc{Apple} (a.k.a as \textsc{Command}) key under
+Macs: it makes often sense to use it instead of, say, ControlDown() because Cmd
+key is used for the same thing under Mac as Ctrl elsewhere (but Ctrl still
+exists, just not used for this purpose under Mac). So for non-Mac platforms
+this is the same as \helpref{ControlDown()}{wxkeyeventcontroldown} and under
+Mac this is the same as \helpref{MetaDown()}{wxkeyeventmetadown}.
+
 
-\membersection{wxKeyEvent::ControlDown}
+\membersection{wxKeyEvent::ControlDown}\label{wxkeyeventcontroldown}
 
 \constfunc{bool}{ControlDown}{\void}
 
-Returns TRUE if the control key was down at the time of the key event.
+Returns true if the control key was down at the time of the key event.
 
-\membersection{wxKeyEvent::GetKeyCode}
+Notice that \helpref{GetModifiers}{wxkeyeventgetmodifiers} is easier to use
+correctly than this function so you should consider using it in new code.
+
+
+\membersection{wxKeyEvent::GetKeyCode}\label{wxkeyeventgetkeycode}
 
 \constfunc{int}{GetKeyCode}{\void}
 
 Returns the virtual key code. ASCII events return normal ASCII values,
 while non-ASCII events return values such as {\bf WXK\_LEFT} for the
-left cursor key. See \helpref{Keycodes}{keycodes} for a full list of the virtual key codes.
+left cursor key. See \helpref{Keycodes}{keycodes} for a full list of
+the virtual key codes.
+
+Note that in Unicode build, the returned value is meaningful only if the
+user entered a character that can be represented in current locale's default
+charset. You can obtain the corresponding Unicode character using
+\helpref{GetUnicodeKey}{wxkeyeventgetunicodekey}.
+
+
+\membersection{wxKeyEvent::GetModifiers}\label{wxkeyeventgetmodifiers}
+
+\constfunc{int}{GetModifiers}{\void}
+
+Return the bitmask of modifier keys which were pressed when this event
+happened. See \helpref{key modifier constants}{keymodifiers} for the full list
+of modifiers.
 
-\membersection{wxKeyEvent::GetRawKeyCode}
+Notice that this function is easier to use correctly than, for example, 
+\helpref{ControlDown}{wxkeyeventcontroldown} because when using the latter you
+also have to remember to test that none of the other modifiers is pressed:
+
+\begin{verbatim}
+    if ( ControlDown() && !AltDown() && !ShiftDown() && !MetaDown() )
+        ... handle Ctrl-XXX ...
+\end{verbatim}
+
+and forgetting to do it can result in serious program bugs (e.g. program not
+working with European keyboard layout where \textsc{AltGr} key which is seen by
+the program as combination of \textsc{Ctrl} and \textsc{Alt} is used). On the
+other hand, you can simply write
+
+\begin{verbatim}
+    if ( GetModifiers() == wxMOD_CONTROL )
+        ... handle Ctrl-XXX ...
+\end{verbatim}
+
+with this function.
+
+
+\membersection{wxKeyEvent::GetPosition}\label{wxkeyeventgetposition}
+
+\constfunc{wxPoint}{GetPosition}{\void}
+
+\constfunc{void}{GetPosition}{\param{long *}{x}, \param{long *}{y}}
+
+Obtains the position (in client coordinates) at which the key was pressed.
+
+
+\membersection{wxKeyEvent::GetRawKeyCode}\label{wxkeyeventgetrawkeycode}
 
 \constfunc{wxUint32}{GetRawKeyCode}{\void}
 
@@ -155,7 +251,8 @@ which should only be used in advanced applications.
 {\bf NB:} Currently the raw key codes are not supported by all ports, use
 {\tt\#ifdef wxHAS\_RAW\_KEY\_CODES} to determine if this feature is available.
 
-\membersection{wxKeyEvent::GetRawKeyFlags}
+
+\membersection{wxKeyEvent::GetRawKeyFlags}\label{wxkeyeventgetrawkeyflags}
 
 \constfunc{wxUint32}{GetRawKeyFlags}{\void}
 
@@ -165,46 +262,59 @@ platform-dependent and should only be used in advanced applications.
 {\bf NB:} Currently the raw key flags are not supported by all ports, use
 {\tt \#ifdef wxHAS\_RAW\_KEY\_CODES} to determine if this feature is available.
 
-\membersection{wxKeyEvent::GetX}
 
-\constfunc{long}{GetX}{\void}
+\membersection{wxKeyEvent::GetUnicodeKey}\label{wxkeyeventgetunicodekey}
 
-Returns the X position of the event.
+\constfunc{wxChar}{GetUnicodeKey}{\void}
 
-\membersection{wxKeyEvent::GetY}
+Returns the Unicode character corresponding to this key event.
 
-\constfunc{long}{GetY}{\void}
+This function is only available in Unicode build, i.e. when
+\texttt{wxUSE\_UNICODE} is $1$.
 
-Returns the Y position of the event.
 
-\membersection{wxKeyEvent::MetaDown}
+\membersection{wxKeyEvent::GetX}\label{wxkeyeventgetx}
 
-\constfunc{bool}{MetaDown}{\void}
+\constfunc{long}{GetX}{\void}
 
-Returns TRUE if the Meta key was down at the time of the key event.
+Returns the X position (in client coordinates) of the event.
 
-\membersection{wxKeyEvent::GetPosition}
 
-\constfunc{wxPoint}{GetPosition}{\void}
+\membersection{wxKeyEvent::GetY}\label{wxkeyeventgety}
 
-\constfunc{void}{GetPosition}{\param{long *}{x}, \param{long *}{y}}
+\constfunc{long}{GetY}{\void}
 
-Obtains the position at which the key was pressed.
+Returns the Y (in client coordinates) position of the event.
 
-\membersection{wxKeyEvent::HasModifiers}
+
+\membersection{wxKeyEvent::HasModifiers}\label{wxkeyeventhasmodifiers}
 
 \constfunc{bool}{HasModifiers}{\void}
 
-Returns TRUE if either {\sc Ctrl} or {\sc Alt} keys was down
+Returns true if either {\sc Ctrl} or {\sc Alt} keys was down
 at the time of the key event. Note that this function does not take into
 account neither {\sc Shift} nor {\sc Meta} key states (the reason for ignoring
 the latter is that it is common for {\sc NumLock} key to be configured as
 {\sc Meta} under X but the key presses even while {\sc NumLock} is on should
 be still processed normally).
 
+
+\membersection{wxKeyEvent::MetaDown}\label{wxkeyeventmetadown}
+
+\constfunc{bool}{MetaDown}{\void}
+
+Returns true if the Meta key was down at the time of the key event.
+
+Notice that \helpref{GetModifiers}{wxkeyeventgetmodifiers} is easier to use
+correctly than this function so you should consider using it in new code.
+
+
 \membersection{wxKeyEvent::ShiftDown}\label{wxkeyeventshiftdown}
 
 \constfunc{bool}{ShiftDown}{\void}
 
-Returns TRUE if the shift key was down at the time of the key event.
+Returns true if the shift key was down at the time of the key event.
+
+Notice that \helpref{GetModifiers}{wxkeyeventgetmodifiers} is easier to use
+correctly than this function so you should consider using it in new code.