don't always erase the background ourselves as this is incompatible with XP themed...

[wxWidgets.git] / docs / latex / wx / calctrl.tex

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Name:        calctrl.tex
%% Purpose:     wxCalendarCtrl documentation
%% Author:      Vadim Zeitlin
%% Modified by:
%% Created:     03.01.00
%% RCS-ID:      $Id$
%% Copyright:   (c) Vadim Zeitlin
%% License:     wxWidgets license
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\section{\class{wxCalendarCtrl}}\label{wxcalendarctrl}

The calendar control allows the user to pick a date interactively. For this,
it displays a window containing several parts: the control to pick the month
and the year at the top (either or both of them may be disabled) and a month
area below them which shows all the days in the month. The user can move the
current selection using the keyboard and select the date (generating 
{\tt EVT\_CALENDAR} event) by pressing {\tt <Return>} or double clicking it.

It has advanced possibilities for the customization of its display. All global
settings (such as colours and fonts used) can, of course, be changed. But
also, the display style for each day in the month can be set independently
using \helpref{wxCalendarDateAttr}{wxcalendardateattr} class.

An item without custom attributes is drawn with the default colours and
font and without border, but setting custom attributes with 
\helpref{SetAttr}{wxcalendarctrlsetattr} allows to modify its appearance. Just
create a custom attribute object and set it for the day you want to be
displayed specially (note that the control will take ownership of the pointer,
i.e. it will delete it itself). A day may be marked as being a holiday, even
if it is not recognized as one by \helpref{wxDateTime}{tdateholidays} using 
\helpref{SetHoliday}{wxcalendardateattrsetholiday} method.

As the attributes are specified for each day, they may change when the month
is changed, so you will often want to update them in 
{\tt EVT\_CALENDAR\_MONTH} event handler.

\wxheading{Derived from}

\helpref{wxControl}{wxcontrol}\\
\helpref{wxWindow}{wxwindow}\\
\helpref{wxEvtHandler}{wxevthandler}\\
\helpref{wxObject}{wxobject}

\wxheading{Include files}

<wx/calctrl.h>

\wxheading{Window styles}

\twocolwidtha{5cm}
\begin{twocollist}\itemsep=4pt
\twocolitem{\windowstyle{wxCAL\_SUNDAY\_FIRST}}{Show Sunday as the first day in the week}
\twocolitem{\windowstyle{wxCAL\_MONDAY\_FIRST}}{Show Monday as the first day in the week}
\twocolitem{\windowstyle{wxCAL\_SHOW\_HOLIDAYS}}{Highlight holidays in the calendar}
\twocolitem{\windowstyle{wxCAL\_NO\_YEAR\_CHANGE}}{Disable the year changing}
\twocolitem{\windowstyle{wxCAL\_NO\_MONTH\_CHANGE}}{Disable the month (and, implicitly, the year) changing}
\twocolitem{\windowstyle{wxCAL\_SHOW\_SURROUNDING\_WEEKS}}{Show the neighbouring weeks in the previous and next months}
\twocolitem{\windowstyle{wxCAL\_SEQUENTIAL\_MONTH\_SELECTION}}{Use alternative, more compact, style for the month and year selection controls.}
\end{twocollist}

The default calendar style is {\tt wxCAL\_SHOW\_HOLIDAYS}.

\wxheading{Event table macros}

To process input from a calendar control, use these event handler macros to
direct input to member functions that take a 
\helpref{wxCalendarEvent}{wxcalendarevent} argument.

\twocolwidtha{7cm}
\begin{twocollist}\itemsep=7pt
\twocolitem{{\bf EVT\_CALENDAR(id, func)}}{A day was double clicked in the calendar.}
\twocolitem{{\bf EVT\_CALENDAR\_SEL\_CHANGED(id, func)}}{The selected date changed.}
\twocolitem{{\bf EVT\_CALENDAR\_DAY(id, func)}}{The selected day changed.}
\twocolitem{{\bf EVT\_CALENDAR\_MONTH(id, func)}}{The selected month changed.}
\twocolitem{{\bf EVT\_CALENDAR\_YEAR(id, func)}}{The selected year changed.}
\twocolitem{{\bf EVT\_CALENDAR\_WEEKDAY\_CLICKED(id, func)}}{User clicked on the week day header}
\end{twocollist}%

Note that changing the selected date will result in either of 
{\tt EVT\_CALENDAR\_DAY}, {\tt MONTH} or {\tt YEAR} events and 
{\tt EVT\_CALENDAR\_SEL\_CHANGED} one.

\wxheading{Constants}

The following are the possible return values for 
\helpref{HitTest}{wxcalendarctrlhittest} method:

{\small
\begin{verbatim}
enum wxCalendarHitTestResult
{
    wxCAL_HITTEST_NOWHERE,      // outside of anything
    wxCAL_HITTEST_HEADER,       // on the header (weekdays)
    wxCAL_HITTEST_DAY           // on a day in the calendar
}
\end{verbatim}
}

\wxheading{See also}

\helpref{Calendar sample}{samplecalendar}\\
\helpref{wxCalendarDateAttr}{wxcalendardateattr}\\
\helpref{wxCalendarEvent}{wxcalendarevent}

\latexignore{\rtfignore{\wxheading{Members}}}

\membersection{wxCalendarCtrl::wxCalendarCtrl}\label{wxcalendarctrlwxcalendarctrldef}

\func{}{wxCalendarCtrl}{\void}

Default constructor, use \helpref{Create}{wxcalendarctrlcreate} after it.

\membersection{wxCalendarCtrl::wxCalendarCtrl}\label{wxcalendarctrlwxcalendarctrl}

\func{}{wxCalendarCtrl}{\param{wxWindow* }{parent}, \param{wxWindowID }{id}, \param{const wxDateTime\& }{date = wxDefaultDateTime}, \param{const wxPoint\& }{pos = wxDefaultPosition}, \param{const wxSize\& }{size = wxDefaultSize}, \param{long }{style = wxCAL\_SHOW\_HOLIDAYS}, \param{const wxString\& }{name = wxCalendarNameStr}}

Does the same as \helpref{Create}{wxcalendarctrlcreate} method.

\membersection{wxCalendarCtrl::Create}\label{wxcalendarctrlcreate}

\func{bool}{Create}{\param{wxWindow* }{parent}, \param{wxWindowID }{id}, \param{const wxDateTime\& }{date = wxDefaultDateTime}, \param{const wxPoint\& }{pos = wxDefaultPosition}, \param{const wxSize\& }{size = wxDefaultSize}, \param{long }{style = wxCAL\_SHOW\_HOLIDAYS}, \param{const wxString\& }{name = wxCalendarNameStr}}

Creates the control. See \helpref{wxWindow}{wxwindowctor} for the meaning of
the parameters and the control overview for the possible styles.

\membersection{wxCalendarCtrl::\destruct{wxCalendarCtrl}}\label{wxcalendarctrldtor}

\func{}{\destruct{wxCalendarCtrl}}{\void}

Destroys the control.

\membersection{wxCalendarCtrl::SetDate}\label{wxcalendarctrlsetdate}

\func{void}{SetDate}{\param{const wxDateTime\& }{date}}

Sets the current date.

\membersection{wxCalendarCtrl::GetDate}\label{wxcalendarctrlgetdate}

\constfunc{const wxDateTime\&}{GetDate}{\void}

Gets the currently selected date.

\membersection{wxCalendarCtrl::EnableYearChange}\label{wxcalendarctrlenableyearchange}

\func{void}{EnableYearChange}{\param{bool }{enable = true}}

This function should be used instead of changing {\tt wxCAL\_NO\_YEAR\_CHANGE}
style bit directly. It allows or disallows the user to change the year
interactively.

\membersection{wxCalendarCtrl::EnableMonthChange}\label{wxcalendarctrlenablemonthchange}

\func{void}{EnableMonthChange}{\param{bool }{enable = true}}

This function should be used instead of changing 
{\tt wxCAL\_NO\_MONTH\_CHANGE} style bit. It allows or disallows the user to
change the month interactively. Note that if the month can not be changed, the
year can not be changed neither.

\membersection{wxCalendarCtrl::EnableHolidayDisplay}\label{wxcalendarctrlenableholidaydisplay}

\func{void}{EnableHolidayDisplay}{\param{bool }{display = true}}

This function should be used instead of changing {\tt wxCAL\_SHOW\_HOLIDAYS}
style bit directly. It enables or disables the special highlighting of the
holidays.

\membersection{wxCalendarCtrl::SetHeaderColours}\label{wxcalendarctrlsetheadercolours}

\func{void}{SetHeaderColours}{\param{const wxColour\& }{colFg}, \param{const wxColour\& }{colBg}}

Set the colours used for painting the weekdays at the top of the control.

\membersection{wxCalendarCtrl::GetHeaderColourFg}\label{wxcalendarctrlgetheadercolourfg}

\constfunc{const wxColour\&}{GetHeaderColourFg}{\void}

Gets the foreground colour of the header part of the calendar window.

\wxheading{See also}

\helpref{SetHeaderColours}{wxcalendarctrlsetheadercolours}

\membersection{wxCalendarCtrl::GetHeaderColourBg}\label{wxcalendarctrlgetheadercolourbg}

\constfunc{const wxColour\&}{GetHeaderColourBg}{\void}

Gets the background colour of the header part of the calendar window.

\wxheading{See also}

\helpref{SetHeaderColours}{wxcalendarctrlsetheadercolours}

\membersection{wxCalendarCtrl::SetHighlightColours}\label{wxcalendarctrlsethighlightcolours}

\func{void}{SetHighlightColours}{\param{const wxColour\& }{colFg}, \param{const wxColour\& }{colBg}}

Set the colours to be used for highlighting the currently selected date.

\membersection{wxCalendarCtrl::GetHighlightColourFg}\label{wxcalendarctrlgethighlightcolourfg}

\constfunc{const wxColour\&}{GetHighlightColourFg}{\void}

Gets the foreground highlight colour.

\wxheading{See also}

\helpref{SetHighlightColours}{wxcalendarctrlsethighlightcolours}

\membersection{wxCalendarCtrl::GetHighlightColourBg}\label{wxcalendarctrlgethighlightcolourbg}

\constfunc{const wxColour\&}{GetHighlightColourBg}{\void}

Gets the background highlight colour.

\wxheading{See also}

\helpref{SetHighlightColours}{wxcalendarctrlsethighlightcolours}

\membersection{wxCalendarCtrl::SetHolidayColours}\label{wxcalendarctrlsetholidaycolours}

\func{void}{SetHolidayColours}{\param{const wxColour\& }{colFg}, \param{const wxColour\& }{colBg}}

Sets the colours to be used for the holidays highlighting (only used if the
window style includes {\tt wxCAL\_SHOW\_HOLIDAYS} flag).

\membersection{wxCalendarCtrl::GetHolidayColourFg}\label{wxcalendarctrlgetholidaycolourfg}

\constfunc{const wxColour\&}{GetHolidayColourFg}{\void}

Return the foreground colour currently used for holiday highlighting.

\wxheading{See also}

\helpref{SetHolidayColours}{wxcalendarctrlsetholidaycolours}

\membersection{wxCalendarCtrl::GetHolidayColourBg}\label{wxcalendarctrlgetholidaycolourbg}

\constfunc{const wxColour\&}{GetHolidayColourBg}{\void}

Return the background colour currently used for holiday highlighting.

\wxheading{See also}

\helpref{SetHolidayColours}{wxcalendarctrlsetholidaycolours}

\membersection{wxCalendarCtrl::GetAttr}\label{wxcalendarctrlgetattr}

\constfunc{wxCalendarDateAttr *}{GetAttr}{\param{size\_t }{day}}

Returns the attribute for the given date (should be in the range $1\ldots31$).

The returned pointer may be {\tt NULL}.

\membersection{wxCalendarCtrl::SetAttr}\label{wxcalendarctrlsetattr}

\func{void}{SetAttr}{\param{size\_t }{day}, \param{wxCalendarDateAttr* }{attr}}

Associates the attribute with the specified date (in the range $1\ldots31$).

If the pointer is {\tt NULL}, the items attribute is cleared.

\membersection{wxCalendarCtrl::SetHoliday}\label{wxcalendarctrlsetholiday}

\func{void}{SetHoliday}{\param{size\_t }{day}}

Marks the specified day as being a holiday in the current month.

\membersection{wxCalendarCtrl::ResetAttr}\label{wxcalendarctrlresetattr}

\func{void}{ResetAttr}{\param{size\_t }{day}}

Clears any attributes associated with the given day (in the range
$1\ldots31$).

\membersection{wxCalendarCtrl::HitTest}\label{wxcalendarctrlhittest}

\func{wxCalendarHitTestResult}{HitTest}{\param{const wxPoint\& }{pos}, \param{wxDateTime* }{date = NULL}, \param{wxDateTime::WeekDay* }{wd = NULL}}

Returns one of {\tt wxCAL\_HITTEST\_XXX} 
\helpref{constants}{wxcalendarctrl} and fills either {\it date} or 
{\it wd} pointer with the corresponding value depending on the hit test code.

\section{\class{wxCalendarDateAttr}}\label{wxcalendardateattr}

wxCalendarDateAttr is a custom attributes for a calendar date. The objects of
this class are used with \helpref{wxCalendarCtrl}{wxcalendarctrl}.

\wxheading{Derived from}

No base class

\wxheading{Constants}

Here are the possible kinds of borders which may be used to decorate a date:

\begin{verbatim}
enum wxCalendarDateBorder
{
    wxCAL_BORDER_NONE,          // no border (default)
    wxCAL_BORDER_SQUARE,        // a rectangular border
    wxCAL_BORDER_ROUND          // a round border
}
\end{verbatim}

\wxheading{See also}

\helpref{wxCalendarCtrl}{wxcalendarctrl}

\latexignore{\rtfignore{\wxheading{Members}}}

\membersection{wxCalendarDateAttr::wxCalendarDateAttr}\label{wxcalendardateattrwxcalendardateattr}

\func{}{wxCalendarDateAttr}{\void}

\func{}{wxCalendarDateAttr}{\param{const wxColour\& }{colText}, \param{const wxColour\& }{colBack = wxNullColour}, \param{const wxColour\& }{colBorder = wxNullColour}, \param{const wxFont\& }{font = wxNullFont}, \param{wxCalendarDateBorder }{border = wxCAL\_BORDER\_NONE}}

\func{}{wxCalendarDateAttr}{\param{wxCalendarDateBorder }{border}, \param{const wxColour\& }{colBorder = wxNullColour}}

The constructors.

\membersection{wxCalendarDateAttr::SetTextColour}\label{wxcalendardateattrsettextcolour}

\func{void}{SetTextColour}{\param{const wxColour\& }{colText}}

Sets the text (foreground) colour to use.

\membersection{wxCalendarDateAttr::SetBackgroundColour}\label{wxcalendardateattrsetbackgroundcolour}

\func{void}{SetBackgroundColour}{\param{const wxColour\& }{colBack}}

Sets the text background colour to use.

\membersection{wxCalendarDateAttr::SetBorderColour}\label{wxcalendardateattrsetbordercolour}

\func{void}{SetBorderColour}{\param{const wxColour\& }{col}}

Sets the border colour to use.

\membersection{wxCalendarDateAttr::SetFont}\label{wxcalendardateattrsetfont}

\func{void}{SetFont}{\param{const wxFont\& }{font}}

Sets the font to use.

\membersection{wxCalendarDateAttr::SetBorder}\label{wxcalendardateattrsetborder}

\func{void}{SetBorder}{\param{wxCalendarDateBorder }{border}}

Sets the \helpref{border kind}{wxcalendardateattr}

\membersection{wxCalendarDateAttr::SetHoliday}\label{wxcalendardateattrsetholiday}

\func{void}{SetHoliday}{\param{bool }{holiday}}

Display the date with this attribute as a holiday.

\membersection{wxCalendarDateAttr::HasTextColour}\label{wxcalendardateattrhastextcolour}

\constfunc{bool}{HasTextColour}{\void}

Returns {\tt true} if this item has a non default text foreground colour.

\membersection{wxCalendarDateAttr::HasBackgroundColour}\label{wxcalendardateattrhasbackgroundcolour}

\constfunc{bool}{HasBackgroundColour}{\void}

Returns {\tt true} if this attribute specifies a non default text background colour.

\membersection{wxCalendarDateAttr::HasBorderColour}\label{wxcalendardateattrhasbordercolour}

\constfunc{bool}{HasBorderColour}{\void}

Returns {\tt true} if this attribute specifies a non default border colour.

\membersection{wxCalendarDateAttr::HasFont}\label{wxcalendardateattrhasfont}

\constfunc{bool}{HasFont}{\void}

Returns {\tt true} if this attribute specifies a non default font.

\membersection{wxCalendarDateAttr::HasBorder}\label{wxcalendardateattrhasborder}

\constfunc{bool}{HasBorder}{\void}

Returns {\tt true} if this attribute specifies a non default (i.e. any) border.

\membersection{wxCalendarDateAttr::IsHoliday}\label{wxcalendardateattrisholiday}

\constfunc{bool}{IsHoliday}{\void}

Returns {\tt true} if this attribute specifies that this item should be
displayed as a holiday.

\membersection{wxCalendarDateAttr::GetTextColour}\label{wxcalendardateattrgettextcolour}

\constfunc{const wxColour\&}{GetTextColour}{\void}

Returns the text colour to use for the item with this attribute.

\membersection{wxCalendarDateAttr::GetBackgroundColour}\label{wxcalendardateattrgetbackgroundcolour}

\constfunc{const wxColour\&}{GetBackgroundColour}{\void}

Returns the background colour to use for the item with this attribute.

\membersection{wxCalendarDateAttr::GetBorderColour}\label{wxcalendardateattrgetbordercolour}

\constfunc{const wxColour\&}{GetBorderColour}{\void}

Returns the border colour to use for the item with this attribute.

\membersection{wxCalendarDateAttr::GetFont}\label{wxcalendardateattrgetfont}

\constfunc{const wxFont\&}{GetFont}{\void}

Returns the font to use for the item with this attribute.

\membersection{wxCalendarDateAttr::GetBorder}\label{wxcalendardateattrgetborder}

\constfunc{wxCalendarDateBorder}{GetBorder}{\void}

Returns the \helpref{border}{wxcalendardateattr} to use for the item with this attribute.

\section{\class{wxCalendarEvent}}\label{wxcalendarevent}

The wxCalendarEvent class is used together with 
\helpref{wxCalendarCtrl}{wxcalendarctrl}.

\wxheading{See also}

\helpref{wxCalendarCtrl}{wxcalendarctrl}

\latexignore{\rtfignore{\wxheading{Members}}}

\membersection{wxCalendarEvent::GetDate}\label{wxcalendareventgetdate}

\constfunc{const wxDateTime\&}{GetDate}{\void}

Returns the date. This function may be called for all event types except 
{\tt EVT\_CALENDAR\_WEEKDAY\_CLICKED} one for which it doesn't make sense.

\membersection{wxCalendarEvent::GetWeekDay}\label{wxcalendareventgetweekday}

\constfunc{wxDateTime::WeekDay}{GetWeekDay}{\void}

Returns the week day on which the user clicked in 
{\tt EVT\_CALENDAR\_WEEKDAY\_CLICKED} handler. It doesn't make sense to call
this function in other handlers.

\membersection{wxCalendarEvent::SetDate}\label{wxcalendareventsetdate}

\func{void}{SetDate}{\param{const wxDateTime\&}{ date}}

Sets the date.

\membersection{wxCalendarEvent::SetWeekDay}\label{wxcalendareventsetweekday}

\func{void}{SetWeekDay}{\param{wxDateTime::WeekDay}{ day}}

Sets the week day.