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// ==========================================================================
// Class Specification : COXDateTimeCtrl
// ==========================================================================
// Version: 9.3
// This software along with its related components, documentation and files ("The Libraries")
// is © 1994-2007 The Code Project (1612916 Ontario Limited) and use of The Libraries is
// governed by a software license agreement ("Agreement"). Copies of the Agreement are
// available at The Code Project (www.codeproject.com), as part of the package you downloaded
// to obtain this file, or directly from our office. For a copy of the license governing
// this software, you may contact us at legalaffairs@codeproject.com, or by calling 416-849-8900.
// //////////////////////////////////////////////////////////////////////////
// Properties:
// NO Abstract class (does not have any objects)
// YES Derived from CWnd
// YES Is a Cwnd.
// YES Two stage creation (constructor & Create())
// NO Has a message map
// NO Needs a resource (template)
// NO Persistent objects (saveable on disk)
// NO Uses exceptions
// //////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////
// Desciption :
/*
A COXDateTimeCtrl object encapsulates the functionality of a date and time picker control.
The date and time picker control (DTP control) provides a simple interface to exchange
date and time information with a user. This interface contains fields, each of which
displays a part of the date and time information stored in the control. The user can
change the information stored in the control by changing the content of the string in a
given field. The user can move from field to field using the mouse or the keyboard.
You can customize the date and time picker control by applying a variety of styles to the
object when you create it. The following window styles are specific to date and time
picker (DTP) controls:
DTS_APPCANPARSE - Allows the owner to parse user input and take
necessary action. It enables users to edit within
the client area of the control when they press the
F2 key. The control sends DTN_USERSTRING notification
messages when users are finished.
DTS_LONGDATEFORMAT - Displays the date in long format. The default format
string for this style is defined by
LOCALE_SLONGDATEFORMAT, which produces output like
"Friday, April 19, 1996".
DTS_RIGHTALIGN - The drop-down month calendar will be right-aligned
with the control instead of left-aligned, which is
the default.
DTS_SHOWNONE - It is possible to have no date currently selected in
the control. With this style, the control displays a
check box that users can check once they have entered
or selected a date. Until this check box is checked,
the application will not be able to retrieve the date
from the control because, in essence, the control has
no date. This state can be set with the SetTime
function or verified with the GetTime function.
DTS_SHORTDATEFORMAT - Displays the date in short format. The default format
string for this style is defined by LOCALE_SSHORTDATE,
which produces output like "4/19/96".
DTS_TIMEFORMAT - Displays the time. The default format string for this
style is defined by LOCALE_STIMEFORMAT, which produces
output like "5:31:42 PM".
DTS_UPDOWN - Appears to the right of the DTP control to modify date
values. This style can be used instead of the drop-down
month calendar, which is the default style.
You can set the display format of the DTP control using format styles.
Date and time picker (DTP) controls support the following format characters.
"d" The one- or two-digit day.
"dd" The two-digit day. Single-digit day values are preceded by a zero.
"ddd" The three-character weekday abbreviation.
"dddd" The full weekday name.
"h" The one- or two-digit hour in 12-hour format.
"hh" The two-digit hour in 12-hour format. Single-digit values are preceded
by a zero.
"H" The one- or two-digit hour in 24-hour format.
"HH" The two-digit hour in 24-hour format. Single-digit values are preceded
by a zero.
"m" The one- or two-digit minute.
"mm" The two-digit minute. Single-digit values are preceded by a zero.
"M" The one- or two-digit month number.
"MM" The two-digit month number. Single-digit values are preceded by a zero.
"MMM" The three-character month abbreviation.
"MMMM" The full month name.
"t" The one-letter AM/PM abbreviation (that is, AM is displayed as "A").
"tt" The two-letter AM/PM abbreviation (that is, AM is displayed as "AM").
"X" The callback field. The control still uses the other valid format
characters and queries the owner to fill in the "X" portion. So the owner
must be prepared to handle the DTN_WMKEYDOWN, DTN_FORMAT, and
DTN_FORMATQUERY notification messages. Multiple "X" characters can be used
in series to signify unique callback fields.
"y" The one-digit year (that is, 1996 would be displayed as "6").
"yy" The last two digits of the year (that is, 1996 would be displayed as "96").
"yyy" The full year (that is, 1996 would be displayed as "1996").
Callback fields
In addition to the standard format characters that define date and time picker (DTP)
fields, you can customize your output by specifying certain parts of a format string
as callback fields. To declare a callback field, include one or more "X" characters
(ASCII Code 88) anywhere in the body of the format string. Like other DTP control
fields, callback fields are displayed in left-to-right order based on their location
in the format string. You can create callback fields that are unique to each other
by repeating the "X" character. Thus, the format string "XXddddMMMdd', 'yyyXXX"
contains two unique callback fields, "XX" and "XXX". Remember, callback fields are
treated as valid fields, so your application must be prepared to handle DTN_WMKEYDOWN
notification messages. When the DTP control parses the format string and encounters
a callback field, it sends DTN_FORMAT and DTN_FORMATQUERY notification messages.
The callback field string is included with the notifications so the receiving
application can determine which callback field is being queried. The owner of the
control must respond to these notifications to ensure that the custom information
is properly displayed.
//////////////////////////
Using COXDateTimeCtrl
The date and time picker control (COXDateTimeCtrl) implements an intuitive and recognizable
method of entering or selecting a specific date. The main interface of the control is
similar in functionality to a combo box. However, if the user expands the control,
a month calendar control appears (by default), allowing the user to specify a particular
date. When a date is chosen, the month calendar control automatically disappears.
!!!
Note To use both the CDateTimePicker and COXMonthCalCtrl classes in your project,
you must include OXDateTimeCtrl.h
!!!
//////////////////////////
Creating the Date and Time Picker Control
How the date and time picker control is created depends on whether you are using the
control in a dialog box or creating it in a nondialog window.
To use COXDateTimeCtrl directly in a dialog box
Visual C++ v6.0:
In the dialog editor, add a Date and Time Picker Control to your dialog template resource.
Specify its control ID. Specify any styles required, using the Properties dialog box of the
date and time picker control. Use ClassWizard to map handler functions in the dialog class
for any date time picker control notification messages you need to handle. In OnInitDialog,
set any additional styles for the COXDateTimeCtrl object.
Visual C++ v5.0:
In the dialog editor, add a Static Control to your dialog template resource (it will be
a placeholder for the DTP control). Specify its control ID. In OnInitDialog, you can use
next code to replace Static Control on our DTP control:
CWnd *pFrame=GetDlgItem(IDC_DATETIMEPICKER);
CRect rcWnd;
pFrame->GetWindowRect(rcWnd);
pFrame->DestroyWindow(); //pFrame was just a placeholder anyway.
ScreenToClient(rcWnd);
m_ctlDateTimePicker.Create(WS_CHILD|WS_VISIBLE|WS_TABSTOP,rcWnd,this,
IDC_DATETIMEPICKER);
To use COXDateTimeCtrl in a nondialog window
Declare the control in the view or window class. Call the control's Create member function,
possibly in OnInitialUpdate, possibly as early as the parent window's OnCreate handler
function (if you're subclassing the control). Set the styles for the control.
//////////////////////////
Accessing the Embedded Month Calendar Control
The embedded month calendar control object can be accessed from the COXDateTimeCtrl object
with a call to the GetMonthCalCtrl member function.
!!!
Note The embedded month calendar control is used only when the date and time picker
control does not have the DTS_UPDOWN style set.
!!!
This is useful if you want to modify certain attributes before the embedded control is
displayed. To accomplish this, handle the DTN_DROPDOWN notification, retrieve the month
calendar control (using COXDateTimeCtrl::GetMonthCalCtrl), and make your modifications.
Unfortunately, the month calendar control is not persistent.
In other words, when the user requests the display of the month calendar control, a new
month calendar control is created (before the DTN_DROPDOWN notification). The control is
destroyed (after the DTN_CLOSEUP notification) when dismissed by the user. This means that
any attributes you modify, before the embedded control is displayed, are lost when the
embedded control is dismissed.
The following example demonstrates this procedure, using a handler for the DTN_DROPDOWN
notification. The code changes the background color of the month calendar control,
with a call to SetMonthCalColor, to gray. The code is as follows:
void CMyDlg::OnDropdown(NMHDR* pNMHDR, LRESULT* pResult)
{
//set the background color of the month to gray
COLORREF clr= RGB(100, 100, 100);
SetMonthCalColor(MCSC_MONTHBK, clr);
*pResult = 0;
}
As stated previously, all modifications to properties of the month calendar control are
lost, with two exceptions, when the embedded control is dismissed. The first exception,
the colors of the month calendar control, has already been discussed. The second exception
is the font used by the month calendar control. You can modify the default font by making
a call to COXDateTimeCtrl::SetMonthCalFont, passing the handle of an existing font.
The following example (where m_dtPicker is the date and time control object) demonstrates
one possible method:
COXMonthCalCtrl* pMCCtrl= NULL;
pMCCtrl= m_dtPicker.GetMonthCalCtrl();
//create and initialize the font to be used
LOGFONT logFont;
logFont.lfHeight = -12;
logFont.lfWidth = 0;
logFont.lfWeight = FW_NORMAL;
logFont.lfItalic = FALSE;
logFont.lfUnderline = FALSE;
logFont.lfStrikeOut = FALSE;
logFont.lfEscapement = 0;
logFont.lfOrientation = 0;
lstrcpy(logFont.lfFaceName, _T("Verdana"));
m_MCFont.CreateFontIndirect(&logFont);
m_dtPicker.SetMonthCalFont((HFONT)m_MCFont);
Once the font has been changed, with a call to COXDateTimeCtrl::SetMonthCalFont, the new font
is stored and used the next time a month calendar is to be displayed.
//////////////////////////
Using Callback Fields in a Date and Time Picker Control
In addition to the standard format characters that define date and time picker fields,
you can customize your output by specifying certain parts of a custom format string as
callback fields. To declare a callback field, include one or more "X" characters
(ASCII Code 88) anywhere in the body of the format string. For example, the following
string "'Today is: 'yy'/'MM'/'dd' (Day 'X')'"causes the date and time picker control
to display the current value as the year followed by the month, date, and finally the
day of the year.
!!!
Note The number of X's in a callback field does not correspond to the number of
characters that will be displayed.
!!!
You can distinguish between multiple callback fields in a custom string by repeating
the "X" character. Thus, the format string "XXddddMMMdd', 'yyyXXX" contains two unique
callback fields, "XX" and "XXX".
!!!
Note Callback fields are treated as valid fields, so your application must be
prepared to handle DTN_WMKEYDOWN notification messages.
!!!
Implementing callback fields in your date and time picker control consists of three parts:
1) Initializing the custom format string
Initialize the custom string with a call to COXDateTimeCtrl::SetFormat. A common
place to set the custom format string is in the OnInitDialog function of your
containing dialog class or OnInitalUpdate function of your containing view class.
2) Handling the DTN_FORMATQUERY notification
When the control parses the format string and encounters a callback field, the
application sends DTN_FORMAT and DTN_FORMATQUERY notification messages. The
callback field string is included with the notifications so you can determine
which callback field is being queried.
The DTN_FORMATQUERY notification is sent to retrieve the maximum allowable size
in pixels of the string that will be displayed in the current callback field.
To properly calculate this value, you must calculate the height and width of
the string, to be substituted for the field, using the control's display font.
The actual calculation of the string is easily achieved with a call to the
::GetTextExtentPoint32 Win32 function. Once the size is determined, pass the
value back to the application and exit the handler function.
The following example is one method of supplying the size of the callback string:
NMDATETIMEFORMATQUERY* pDTFormatQuery= (NMDATETIMEFORMATQUERY *)pNMHDR;
CDC* pDC;
CFont* pFont;
CFont* pOrigFont;
// Prepare the device context for the GetTextExtentPoint32 call.
pDC= GetDC();
pFont= GetFont();
if(!pFont)
pFont->CreateStockObject(DEFAULT_GUI_FONT);
pOrigFont = pDC->SelectObject(pFont);
// Check to see if this is the callback segment desired. If so,
// use the longest text segment to determine the maximum
* // width of the callback field, and then place the information into
// the NMDATETIMEFORMATQUERY structure.
if(!lstrcmp("X",pDTFormatQuery->pszFormat))
::GetTextExtentPoint32 (pDC->m_hDC, "366", 3, &pDTFormatQuery->szMax);
// Reset the font in the device context then release the context.
pDC->SelectObject(pOrigFont);
ReleaseDC(pDC);
*pResult = 0;
Once the size of the current callback field has been calculated, you must supply
a value for the field. This is done in the handler for the DTN_FORMAT notification.
3) Handling the DTN_FORMAT notification
The DTN_FORMAT notification is used by the application to request the character
string that will be substituted. The following example demonstrates one possible
method:
NMDATETIMEFORMAT* pDTFormat= (NMDATETIMEFORMAT *)pNMHDR;
COleDateTime oCurTime;
m_dtPicker.GetTime(oCurTime);
wsprintf(pDTFormat->pszDisplay,"%d",oCurTime.GetDayOfYear());
*pResult = 0;
Note The pointer to the NMDATETIMEFORMAT structure is found by casting the first
parameter of the notification handler to the proper type.
//////////////////////////
Using Custom Format Strings in a Date and Time Picker Control
By default, date and time picker controls provide three format types (each format
corresponding to a unique style) for displaying the current date or time:
DTS_LONGDATEFORMAT - Displays the date in long format, producing output
like "Wednesday, January 3, 1998".
DTS_SHORTDATEFORMAT - Displays the date in short format, producing output
like "1/3/98".
DTS_TIMEFORMAT - Displays the time in long format, producing output
like "5:31:42 PM".
However, you can customize the appearance of the date or time by using a custom format
string. This custom string is comprised of either existing format characters, nonformat
characters, or a combination of both. Once the custom string is built, make a call to
COXDateTimeCtrl::SetFormat passing in your custom string. The date and time picker control
will then display the current value using your custom format string.
The following example code (where m_dtPicker is the COXDateTimeCtrl object) demonstrates
one possible solution:
CString formatStr= _T("'Today is: 'yy'/'MM'/'dd");
m_dtPicker.SetFormat(formatStr);
In addition to custom format strings, date and time picker controls also support callback
fields.
//////////////////////////
Processing Notification Messages in Date and Time Picker Controls
As users interact with the date and time picker control, the control (COXDateTimeCtrl)
sends notification messages to its parent window, usually a view or dialog object.
Handle these messages if you want to do something in response. For example, when the
user opens the date and time picker to display the embedded month calendar control,
the DTN_DROPDOWN notification is sent.
The following list describes the various notifications sent by the date and time picker
control.
DTN_DROPDOWN - Notifies the parent that the embedded month calendar control
is about to be displayed. This notification is only sent
when the DTS_UPDOWN style has not been set. For more
information on this notification, see Accessing the
Embedded Month Calendar Control.
DTN_CLOSEUP - Notifies the parent that the embedded month calendar control
is about to be closed. This notification is only sent when
the DTS_UPDOWN style has not been set.
DTN_DATETIMECHANGE - Notifies the parent that a change has occurred in the control.
lpChange = (LPNMDATETIMECHANGE) lParam;
The owner of the control must return zero.
lpChange - Address of an NMDATETIMECHANGE structure
containing information about the change that
took place in the control.
NMDATETIMECHANGE
typedef struct tagNMDATETIMECHANGE {
NMHDR nmhdr;
DWORD dwFlags;
SYSTEMTIME st;
} NMDATETIMECHANGE, FAR * LPNMDATETIMECHANGE;
Contains information about a change that has taken place
in a date and time picker (DTP) control. This structure is
used with the DTN_DATETIMECHANGE notification message.
nmhdr - NMHDR structure that contains information about
the notification message.
dwFlags - Value that indicates if the control was set to
"no date" status (for DTS_SHOWNONE only). This
flag also specifies whether the contents of the
st member are valid and contain current time
information. This value can be one of the
following:
GDT_NONE - The control is set to "no date"
status. The "no date" status
applies only to controls that are
set to the DTS_SHOWNONE style.
GDT_VALID - The control is not set to the
"no date" status. The st member
contains the current date and time.
st - SYSTEMTIME structure that contains information
about the current system date and time.
DTN_FORMAT - Notifies the parent that text is needed to be displayed in a
callback field. For more information on this notification and
callback fields, see Using Callback Fields in a Date and Time
Picker Control.
lpNMFormat = (LPNMDATETIMEFORMAT) lParam;
The owner of the control must return zero.
lpNMFormat - Address of an NMDATETIMEFORMAT structure
containing information regarding this instance
of the notification message. The structure
contains the substring that defines the
callback field and receives the formatted
string that the control will display.
NMDATETIMEFORMAT
typedef struct tagNMDATETIMEFORMAT{
NMHDR nmhdr;
LPCTSTR pszFormat;
SYSTEMTIME st;
LPCTSTR pszDisplay;
TCHAR szDisplay[64];
} NMDATETIMEFORMAT, FAR * LPNMDATETIMEFORMAT;
Contains information about a portion of the format string that
defines a callback field within a date and time picker (DTP)
control. It carries the substring that defines the callback
field and contains a buffer to receive the string that will be
displayed in the callback field. This structure is used with
the DTN_FORMAT notification message.
nmhdr - NMHDR structure that contains information
about the notification message.
pszFormat - Address of the substring that defines a DTP
control callback field The substring comprises
one or more "X" characters, followed by a NULL
character.
st - SYSTEMTIME structure that contains information
about the current system date and time.
pszDisplay - Address of a null-terminated string that
contains the display text of the control.
By default, this is the address of the
szDisplay member of this structure. It is legal
to set this member to point to an existing
string. If so, the application is not required
to place a string into the szDisplay member.
szDisplay - 64-character buffer that is to receive the
zero-terminated string that the DTP control
will display. It is not necessary to fill the
entire buffer.
Handling this message allows the owner of the control to
provide a custom string that the control will display.
DTN_FORMATQUERY - Requests the parent to supply the maximum allowable size of
the string that will be displayed in a callback field.
Handling this notification allows the control to properly
display output at all times, reducing flicker within the
control's display. For more information on this notification,
see Using Callback Fields in a Date and Time Picker Control.
lpDTFormatQuery = (LPNMDATETIMEFORMATQUERY) lParam;
The owner of the control must calculate the maximum possible
width of the text that will be displayed in the callback field,
set the szMax member of the NMDATETIMEFORMATQUERY structure,
and return zero.
lpDTFormatQuery - Address of an NMDATETIMEFORMATQUERY
structure containing information about
the callback field. The structure
contains a substring that defines a
callback field and receives the maximum
allowable size of the string that will
be displayed in the callback field.
NMDATETIMEFORMATQUERY
typedef struct tagNMDATETIMEFORMATQUERY{
NMHDR nmhdr;
LPCTSTR pszFormat;
SIZE szMax;
} NMDATETIMEFORMATQUERY, FAR * LPNMDATETIMEFORMATQUERY;
Contains information about a date and time picker (DTP) control
callback field. It contains a substring (taken from the
control's format string) that defines a callback field.
The structure receives the maximum allowable size of the text
that will be displayed in the callback field. This structure
is used with the DTN_FORMATQUERY notification message.
nmhdr - NMHDR structure that contains information
about this notification message.
pszFormat - Address of a substring that defines a DTP
control callback field. The substring is one
or more "X" characters followed by a NULL.
szMax - SIZE structure that must be filled with the
maximum size of the text that will be displayed
in the callback field.
Handling this message prepares the control to adjust for the
maximum size of the string that will be displayed in a
particular callback field. This enables the control to properly
display output at all times, reducing flicker within the
control's display.
DTN_USERSTRING - Notifies the parent that the user has finished editing the
contents of the date and time picker control. This notification
is only sent when the DTS_APPCANPARSE style has been set.
lpDTstring = (LPNMDATETIMESTRING) lParam;
The owner of the control must return zero.
lpDTstring - Address of an NMDATETIMESTRING structure
that contains information about the instance
of the notification message.
NMDATETIMESTRING
typedef struct tagNMDATETIMESTRING{
NMHDR nmhdr;
LPCTSTR pszUserString;
SYSTEMTIME st;
DWORD dwFlags;
} NMDATETIMESTRING, FAR * LPNMDATETIMESTRING;
Contains information specific to an edit operation that has
taken place in a date and time picker (DTP) control. This
message is used with the DTN_USERSTRING notification message.
nmhdr - NMHDR structure that contains information
about this notification message.
pszUserString - Address of the zero-terminated string that
the user entered.
st - SYSTEMTIME structure that must be filled in
by the owner when handling the
DTN_USERSTRING notification message.
dwFlags - Return field. Set this member to GDT_VALID
to indicate that the st member is valid or
to GDT_NONE to set the control to "no date"
status (DTS_SHOWNONE style only).
Handling this message allows the owner to provide custom
responses to strings entered into the control by the user.
The owner must be prepared to parse the input string and take
action if necessary.
DTN_WMKEYDOWN - Notifies the parent when the user types in a callback field.
Handle this notification to emulate the same keyboard response
supported for non-callback fields in a date and time picker
control.
lpDTKeystroke = (LPNMDATETIMEWMKEYDOWN)lParam;
The owner of the control must return zero.
lpDTKeystroke - Address of an NMDATETIMEWMKEYDOWN structure
containing information about this instance
of the notification. The structure includes
information about the key that the user
typed, the substring that defines the
callback field, and the current system
date and time.
NMDATETIMEWMKEYDOWN
typedef struct tagNMDATETIMEWMKEYDOWN{
NMHDR nmhdr;
int nVirtKey;
LPCTSTR pszFormat;
SYSTEMTIME st;
} NMDATETIMEWMKEYDOWN, FAR * LPNMDATETIMEWMKEYDOWN;
Carries information used to describe and handle a DTN_WMKEYDOWN
notification message.
nmhdr - NMHDR structure that contains information
about the notification message.
nVirtKey - Virtual key code that represents the key that
the user pressed.
pszFormat - Zero-terminated substring, taken from the
format string, that defines the callback field.
The substring is one or more "X" characters,
followed by a NULL.
st - SYSTEMTIME structure containing the current
date and time from the DTP control. The owner
of the control must modify the time information
based on the user's keystroke.
Handling this message allows the owner of the control to
provide specific responses to keystrokes within the callback
fields of the control.
*/
/////////////////////////////////////////////////////////////////////////////
#if !defined(_OXDATETIMECTRL_H_)
#define _OXDATETIMECTRL_H_
#if _MSC_VER >= 1000
#pragma once
#endif // _MSC_VER >= 1000
#include "OXDllExt.h"
#include "OXMonthCalCtrl.h"
#ifndef MCS_NOTODAYCIRCLE
#undef MCS_NOTODAY
#if (_WIN32_IE >= 0x0400)
#define MCS_NOTODAYCIRCLE 0x0008
#define MCS_NOTODAY 0x0010
#else
#define MCS_NOTODAY 0x0008
#endif // (_WIN32_IE >= 0x0400)
#endif // MCS_NOTODAYCIRCLE
///////////////////////////////////////////////////////////////////////////////////////
// OXDateTimeCtrl.h : header file
//
/////////////////////////////////////////////////////////////////////////////
// COXDateTimeCtrl window
#if _MFC_VER<=0x0421
class OX_CLASS_DECL COXDateTimeCtrl : public CWnd
#else
class OX_CLASS_DECL COXDateTimeCtrl : public CDateTimeCtrl
#endif // _MFC_VER>0x0421
{
//#if _MFC_VER<=0x0421
DECLARE_DYNCREATE(COXDateTimeCtrl)
//#endif // _MFC_VER>0x0421
protected:
static BOOL bComCtlInitialized;
COXMonthCalCtrl m_ctlMonthCal;
public:
// --- In :
// --- Out :
// --- Returns:
// --- Effect : Initializes Date Time Picker class in the comctl32.dll
static void InitializeDTPCtrl();
// --- In :
// --- Out :
// --- Returns:
// --- Effect : Construct the object
COXDateTimeCtrl();
// --- In : dwStyle - Specifies the combination of date time control
// styles. The following window styles are specific
// to date and time picker (DTP) controls:
//
// DTS_APPCANPARSE - Allows the owner to parse user input
// and take necessary action. It enables
// users to edit within the client area
// of the control when they press the F2
// key. The control sends DTN_USERSTRING
// notification messages when users are
// finished.
// DTS_LONGDATEFORMAT - Displays the date in long format. The
// default format string for this style is
// defined by LOCALE_SLONGDATEFORMAT, which
// produces output like
// "Friday, April 19, 1996".
// DTS_RIGHTALIGN - The drop-down month calendar will be
// right-aligned with the control instead
// of left-aligned, which is the default.
// DTS_SHOWNONE - It is possible to have no date currently
// selected in the control. With this style,
// the control displays a check box that
// users can check once they have entered
// or selected a date. Until this check
// box is checked, the application will not
// be able to retrieve the date from the
// control because, in essence, the control
// has no date. This state can be set with
// the SetTime function or verified with
// the GetTime function.
// DTS_SHORTDATEFORMAT - Displays the date in short format. The
// default format string for this style is
// defined by LOCALE_SSHORTDATE, which
// produces output like "4/19/96".
// DTS_TIMEFORMAT - Displays the time. The default format
// string for this style is defined by
// LOCALE_STIMEFORMAT, which produces
// output like "5:31:42 PM".
// DTS_UPDOWN - Appears to the right of the DTP control
// to modify date values. This style can
// be used instead of the drop-down month
// calendar, which is the default style.
//
// rect - A reference to a RECT structure, which is the
// position and size of the date and time picker
// control.
// pParentWnd - A pointer to a CWnd object that is the parent
// window of the date and time picker control. It must
// not be NULL.
// nID - Specifies the date and time picker control's
// control ID.
// --- Out :
// --- Returns: Nonzero if creation was successful; otherwise 0.
// --- Effect : Create a date and time picker control in two steps:
// 1) Call COXDateTimeCtrl to construct a COXDateTimeCtrl object.
// 2) Call this member function, which creates the Windows date and
// time picker control and attaches it to the COXDateTimeCtrl object.
// When you call Create, the common controls are initialized
BOOL Create(DWORD dwStyle, const RECT& rect, CWnd* pParentWnd, UINT nID);
#if _MFC_VER<=0x0421
// Attributes
// --- In : iColor - An int value specifying which color area of the
// month calendar to retrieve. For a list of values,
// see the iColor parameter for SetMonthCalColor.
// --- Out :
// --- Returns: A COLORREF value that represents the color setting for the specified
// portion of the month calendar control if successful. The function
// returns -1 if unsuccessful
// --- Effect : Retrieves the color for a given portion of the month calendar within
// a date and time picker (DTP) control.
inline COLORREF GetMonthCalColor(int iColor) const {
ASSERT(::IsWindow(m_hWnd));
return (COLORREF)::SendMessage(m_hWnd,DTM_GETMCCOLOR,(WPARAM)iColor,0);
}
// --- In : iColor - An int value specifying which color area of the
// month calendar to change. This value can be one
// of the following.
//
// MCSC_BACKGROUND - Set the background color displayed
// between months.
// MCSC_MONTHBK - Set the background color displayed
// within a month.
// MCSC_TEXT - Set the color used to display text
// within a month.
// MCSC_TITLEBK - Set the background color displayed
// in the calendar's title.
// MCSC_TITLETEXT - Set the color used to display text
// within the calendar's title.
// MCSC_TRAILINGTEXT - Set the color used to display header
// and trailing-day text. Header and
// trailing days are the days from the
// previous and following months that
// appear on the current calendar.
//
// ref - A COLORREF value representing the color that will
// be set for the specified area of the month calendar.
//
// --- Out :
// --- Returns: A COLORREF value that represents the previous color setting for the
// specified portion of the month calendar control if successful.
// Otherwise, the message returns -1.
// --- Effect : Sets the color for a given portion of the month calendar within a date
// and time picker (DTP) control.
inline COLORREF SetMonthCalColor(int iColor, COLORREF ref) {
ASSERT(::IsWindow(m_hWnd));
return (COLORREF)::SendMessage(m_hWnd,DTM_SETMCCOLOR,(WPARAM)iColor,(LPARAM)ref);
}
// --- In : pstrFormat - A pointer to a zero-terminated format string that
// defines the desired display. Setting this parameter
// to NULL will reset the control to the default
// format string for the current style.
// --- Out :
// --- Returns: Nonzero if successful; otherwise 0.
// --- Effect : Sets the display of a date and time picker (DTP) control based on a
// given format string. Refer to "Custom format strings" section in
// the documentation for description of available format characters.
inline BOOL SetFormat(LPCTSTR pstrFormat) {
ASSERT(::IsWindow(m_hWnd));
return (BOOL)::SendMessage(m_hWnd,DTM_SETFORMAT,0,(LPARAM)pstrFormat);
}
// --- In :
// --- Out :
// --- Returns: A pointer to a CFont object, or NULL if unsuccessful.
// --- Effect : Call this member function to get the font currently used by the
// date and time picker control's month calendar control. The CFont
// object pointed to by the return value is a temporary object and
// is destroyed during the next idle processing time.
inline CFont* GetMonthCalFont() const {
ASSERT(::IsWindow(m_hWnd));
return CFont::FromHandle((HFONT) ::SendMessage(m_hWnd, DTM_GETMCFONT, 0, 0));
}
// --- In : hFont - Handle to the font that will be set.
// bRedraw - Specifies whether the control should be redrawn
// immediately upon setting the font. Setting this
// parameter to TRUE causes the control to redraw
// itself.
// --- Out :
// --- Returns:
// --- Effect : Sets the font to be used by the date and time picker (DTP) control's
// child month calendar control.
inline void SetMonthCalFont(HFONT hFont, BOOL bRedraw = TRUE) {
ASSERT(::IsWindow(m_hWnd));
::SendMessage(m_hWnd, DTM_SETMCFONT, (WPARAM) hFont, MAKELONG(bRedraw, 0));
}
// Operations
// --- In : timeNew - A reference to a COleDateTime object containing
// the to which the control will be set.
// pTimeNew - In the second version above, a pointer to a CTime
// object containing the time to which the control
// will be set. In the third version above, a pointer
// to a SYSTEMTIME structure containing the time to
// which the control will be set.
// --- Out :
// --- Returns: Nonzero if successful; otherwise 0.
// --- Effect : Sets the time in a date and time picker (DTP) control.
BOOL SetTime(const COleDateTime& timeNew);
BOOL SetTime(const CTime* pTimeNew);
BOOL SetTime(LPSYSTEMTIME pTimeNew = NULL);
// --- In :
// --- Out : timeDest - In the first version, a reference to a COleDateTime
// object that will receive the system time information.
// In the second version, a reference to a CTime object
// that will receive the system time information.
// pTimeDest - A pointer to the SYSTEMTIME structure to receive
// the system time information. Must not be NULL.
// --- Returns: In the first version, nonzero if the time is successfully written to
// the COleDateTime object; otherwise 0. In the second and third versions,
// a DWORD value equal to the dwFlag member set in the NMDATETIMECHANGE
// structure.
// --- Effect : Retrieves the currently selected time from a date and time picker (DTP)
// control. The return value DWORD in the second and third versions,
// above, indicates whether or not the date and time picker control is set
// to the "no date" status, as indicated in the NMDATETIMECHANGE structure
// member dwFlags. If the value returned equals GDT_NONE, the control is
// set to "no date" status, and uses the DTS_SHOWNONE style. If the value
// returned equals GDT_VALID, the system time is successfully stored in
// the destination location.
BOOL GetTime(COleDateTime& timeDest) const;
DWORD GetTime(CTime& timeDest) const;
inline DWORD GetTime(LPSYSTEMTIME pTimeDest) const
{
ASSERT(::IsWindow(m_hWnd));
ASSERT(pTimeDest != NULL);
return (DWORD)::SendMessage(m_hWnd,DTM_GETSYSTEMTIME,0,(LPARAM)pTimeDest);
}
#endif // _MFC_VER>0x0421
// --- In : pMinRange - A pointer to a COleDateTime object or a CTime
// object or a pointer to a SYSTEMTIME structure
// containing the earliest time allowed in
// the COXDateTimeCtrl object.
// pMaxRange - A pointer to a COleDateTime object or a CTime
// object or a pointer to a SYSTEMTIME structure
// containing the latest time allowed in the
// COXDateTimeCtrl object.
// --- Out :
// --- Returns: Nonzero if successful; otherwise 0.
// --- Effect : Sets the minimum and maximum allowable system times for a date and
// time picker (DTP) control.
BOOL SetRange(const COleDateTime* pMinRange, const COleDateTime* pMaxRange);
BOOL SetRange(const CTime* pMinRange, const CTime* pMaxRange);
BOOL SetRange(const LPSYSTEMTIME pMinRange, const LPSYSTEMTIME pMaxRange);
// --- In :
// --- Out : pMinRange - A pointer to a COleDateTime object or a CTime
// object or a pointer to a SYSTEMTIME structure
// containing the earliest time allowed in
// the COXDateTimeCtrl object.
// pMaxRange - A pointer to a COleDateTime object or a CTime
// object or a pointer to a SYSTEMTIME structure
// containing the latest time allowed in the
// COXDateTimeCtrl object.
// --- Returns: A DWORD value containing flags that indicate which ranges are set.
// --- Effect : Retrieves the current minimum and maximum allowable system times for
// a date and time picker (DTP) control.
DWORD GetRange(COleDateTime* pMinRange, COleDateTime* pMaxRange) const;
DWORD GetRange(CTime* pMinRange, CTime* pMaxRange) const;
DWORD GetRange(LPSYSTEMTIME pMinRange, LPSYSTEMTIME pMaxRange) const;
// --- In :
// --- Out :
// --- Returns: A pointer to a COXMonthCalCtrl object, or NULL if unsuccessful or
// if the window is not visible
// --- Effect : Call this member function to retrieve the COXMonthCalCtrl object
// associated with the date and time picker control. Date and time picker
// controls create a child month calendar control when the user clicks
// the drop-down arrow. When the COXMonthCalCtrl object is no longer needed,
// it is destroyed, so your application must not rely on storing the
// object representing the date time picker control's child month calendar.
inline COXMonthCalCtrl* GetMonthCalCtrl() const
{
ASSERT(::IsWindow(m_hWnd));
HWND hwndMonthCal=(HWND)::SendMessage(m_hWnd,DTM_GETMONTHCAL,0,0);
if(hwndMonthCal!=NULL)
{
ASSERT(::IsWindow(m_ctlMonthCal.GetSafeHwnd()));
ASSERT(m_ctlMonthCal.GetSafeHwnd()==hwndMonthCal);
COXMonthCalCtrl* pMonthCal=(COXMonthCalCtrl*)&m_ctlMonthCal;
return pMonthCal;
}
else
return NULL;
}
// --- In : hFont - Handle to the font that will be set.
// bRedraw - Specifies whether the control should be redrawn
// immediately upon setting the font. Setting this
// parameter to TRUE causes the control to redraw
// itself.
// --- Out :
// --- Returns:
// --- Effect : Sets the font to be used by the date and time picker (DTP) control's
// child month calendar control.
inline void SetMonthCalFont(CFont* pFont, BOOL bRedraw = TRUE)
{
ASSERT(::IsWindow(m_hWnd));
ASSERT(pFont!=NULL);
#if _MFC_VER<=0x0421
SetMonthCalFont((HFONT)*pFont,bRedraw);
#else
CDateTimeCtrl::SetMonthCalFont((HFONT)*pFont,bRedraw);
#endif // _MFC_VER>0x0421
}
// Overrides
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(COXSHBListCtrl)
protected:
virtual void PreSubclassWindow();
//}}AFX_VIRTUAL
public:
// Overridables
// --- In :
// --- Out :
// --- Returns:
// --- Effect : destructor
virtual ~COXDateTimeCtrl();
protected:
// Generated message map functions
//{{AFX_MSG(COXDateTimeCtrl)
//}}AFX_MSG
afx_msg BOOL OnDropDown(NMHDR *pHdr, LRESULT *pRes);
DECLARE_MESSAGE_MAP()
protected:
// initialize calendar control
virtual BOOL InitDateTimeCtrl();
};
/////////////////////////////////////////////////////////////////////////////
//{{AFX_INSERT_LOCATION}}
// Microsoft Developer Studio will insert additional declarations immediately before the previous line.
#endif // !defined(_OXDATETIMECTRL_H_)
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