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342 lines
10 KiB
Markdown
342 lines
10 KiB
Markdown
# Month Calendar Control
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- [Styles of Month Calendar](#styles-of-month-calendar)
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- [Messages of Month Calendar](#messages-of-month-calendar)
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+ [Getting Date](#getting-date)
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+ [Setting Date](#setting-date)
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+ [Adjusting Colors](#adjusting-colors)
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+ [Size of Control](#size-of-control)
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- [Notification Codes of Month Calendar](#notification-codes-of-month-calendar)
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- [Sample Program](#sample-program)
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The month calendar control provides a user interface similar to a calendar, and
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makes the user be able to select and set the date conveniently. The application
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can get or set the date by sending message to a month calendar control.
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You can create a month calendar control by calling `CreateWindow` function with
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`CTRL_MONTHCALENDAR` as the control class name.
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## Styles of Month Calendar
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A month calendar control can use several forms of Chinese or English and so on
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to display the date information such as week, month, etc. Specifying the
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control style to be `MCS_CHN`, `MCS_ENG_L`, or `MCS_ENG_S` can complete this.
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If a month calendar control has the style `MCS_CHN`, the control will display
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the date information in Chinese; if having the style `MCS_ENG_L`, the control
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will display the date information in English; and if having the style
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`MCS_ENG_S`, the control displays the date information in abbreviate English.
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If having the style `MCS_NOTIFY`, the month calendar control will generate
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corresponding notification messages in cases such as responding to the user’s
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operation.
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## Messages of Month Calendar
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### Getting Date
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`MCM_GETCURDAY` message is used to get the day of the month of the current
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selected date:
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```cpp
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int day;
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day = SendMessage (hwndMonthcal, MCM_GETCURDAY, 0, 0) ;
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```
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The return value of `SendMessage` is the current day of the month, in the range
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1 to 31.
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`MCM_GETCURMONTH` message is used to get the number of months of the current
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selected date:
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```cpp
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int month;
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month = SendMessage (hwndMonthcal, MCM_GETCURMONTH, 0, 0) ;
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```
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The return value of `SendMessage` is the number of months since January, in the
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range 0 to 11.
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`MCM_GETCURYEAR` message is used to get the number of years of the current
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selected date:
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```cpp
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int year;
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year = SendMessage (hwndMonthcal, MCM_GETCURYEAR, 0, 0) ;
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```
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```cpp
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The return value of SendMessage is the current number of years.
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MCM_GETCURMONLEN message is used to get the length (how many days in a month) of the current month:
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```
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```cpp
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int monthlen;
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monthlen = SendMessage (hwndMonthcal, MCM_GETCURMONLEN, 0, 0) ;
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```
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The return value of `SendMessage` is the length of the current month.
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`MCM_GETFIRSTWEEKDAY` message is used to determine which weekday is the first
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day in the current month:
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```cpp
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int weekday;
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weekday = SendMessage (hwndMonthcal, MCM_GETFIRSTWEEKDAY, 0, 0) ;
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```
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The return value of `SendMessage` is the weekday number of the first day in the
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current month. The weekday number is the number of days since Sunday, in the
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range 0 to 6.
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`MCM_GETCURDATE` message gets the current selected date in a month calendar
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control:
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```cpp
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SYSTEMTIME systime;
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SendMessage (hwndMonthcal, MCM_GETCURDATE, 0, (LPARAM)&systime) ;
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```
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Here `systime` is a structure of `SYSTEMTIME` type, which stores the gotten date
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information such as year, month, day, and week, etc. This structure is also
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used for messages such as `MCM_GETTODAY` and so on. The definition of
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`SYSTEMTIME` structure is as follows:
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```cpp
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typedef struct _SYSTEMTIME
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{
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/* Year */
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int year;
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/* Month */
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int month;
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/* Date */
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int day;
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/* Day */
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int weekday;
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} SYSTEMTIME;
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typedef SYSTEMTIME *PSYSTEMTIME;
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```
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`MCM_GETTODAY` message gets the date of "today".
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```cpp
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SYSTEMTIME systime;
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SendMessage (hwndMonthcal, MCM_GETTODAY, 0, (LPARAM)&systime) ;
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```
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Here `systime` is also a structure of `SYSTEMTIME` type.
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### Setting Date
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It should be noted that special user right (such as root) may needed to set the
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date in Linux/UNIX system.
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`MCM_SETCURDAY` message sets the current day, `MCM_SETCURMONTH` message sets
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the current month, and `MCM_SETCURYEAR` sets the current year:
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```cpp
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int day;
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int month;
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int year;
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SendMessage (hwndMonthcal, MCM_SETCURDAY, day, 0) ;
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SendMessage (hwndMonthcal, MCM_SETCURMONTH, month, 0) ;
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SendMessage (hwndMonthcal, MCM_SETCURYEAR, year, 0) ;
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```
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Here, day, month, and year specify the new day, month and year respectively,
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and if these values exceed the rational values, the control will adopt the most
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approached day, month, or year.
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`MCM_SETCURDATE` message sets a specified date as the current selected data:
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```cpp
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SYSTEMTIME systime;
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SendMessage (hwndMonthcal, MCM_SETCURDATE, 0, (LPARAM)&systime) ;
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```
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`MCM_SETTODAY` sets today as the current selected date:
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```cpp
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SendMessage (hwndMonthcal, MCM_SETTODAY, 0, 0) ;
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```
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### Adjusting Colors
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An application can set or get the color of each element in a month calendar
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control by `MCM_GETCOLOR` and `MCM_SETCOLOR` messages:
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```cpp
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MCCOLORINFO color;
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SendMessage (hwndMonthcal, MCM_GETCOLOR, 0, (LPARAM)&color) ;
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SendMessage (hwndMonthcal, MCM_SETCOLOR, 0, (LPARAM)&color) ;
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```
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Here color is a structure of `MCCOLORINFO`, and is used to store color
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information:
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```cpp
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typedef struct _MCCOLORINFO
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{
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/* background color of the title */
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int clr_titlebk;
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/* text color of the title */
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int clr_titletext;
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/* color of the arrows */
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int clr_arrow;
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/* background color of the highlighted arrows */
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int clr_arrowHibk;
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/* background color of the weekday */
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int clr_weekcaptbk;
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/* text color of the weekday */
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int clr_weekcapttext;
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/* backgroud color of the day */
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int clr_daybk;
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/* background color of the highlighted day */
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int clr_dayHibk;
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/* text color of the current day */
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int clr_daytext;
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/* text color of the other day */
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int clr_trailingtext;
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/* text color of the hilighted day */
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int clr_dayHitext;
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} MCCOLORINFO;
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```
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### Size of Control
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A month calendar has a minimum limit for the window to display content in it
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normally. `MCM_GETMINREQRECTW` and `MCM_GETMINREQRECTH` messages are used to
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get the minimum width and the minimum height respectively:
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```cpp
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int minw, minh;
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minw = SendMessage (hwndMonthcal, MCM_GETMINREQRECTW, 0, 0) ;
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minh = SendMessage (hwndMonthcal, MCM_GETMINREQRECTH, 0, 0) ;
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```
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The return values of `SendMessage` functions are the minimum width and height.
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## Notification Codes of Month Calendar
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When user clicked month calendar and the currently selected date is changed,
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the control will generate `MCN_DATECHANGE` notification code.
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## Sample Program
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Program in List 1 illustrates the use of month calendar control. Please refer
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to `monthcal.c` file of the demo program package of this guide for the complete
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source code.
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__List 1__ Sample Program of month calendar control
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```cpp
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#define IDC_MC 100
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#define IDC_OK 200
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/* Dialog box template: only two controls: month calendar control and “OK” button */
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static CTRLDATA CtrlTime[]=
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{
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{
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"monthcalendar",
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WS_CHILD | WS_VISIBLE | MCS_NOTIFY | MCS_ENG_L,
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10, 10, 240, 180,
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IDC_MC,
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"",
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0
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},
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{
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"button",
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WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON,
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260, 180, 50, 22,
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IDC_OK,
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"OK",
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0
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}
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};
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static DLGTEMPLATE DlgTime =
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{
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WS_VISIBLE | WS_CAPTION | WS_BORDER,
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WS_EX_NONE,
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0, 0, 320, 240,
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"Date time",
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0, 0,
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2, CtrlTime,
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0
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};
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static int TimeWinProc(HWND hDlg, int message, WPARAM wParam, LPARAM lParam)
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{
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switch (message) {
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case MSG_INITDIALOG:
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break;
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case MSG_COMMAND:
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{
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int id = LOWORD(wParam);
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if (id == IDC_OK) {
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char info[100];
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SYSTEMTIME date;
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/* Get the current date of month calendar */
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SendMessage (GetDlgItem(hDlg, IDC_MC), MCM_GETCURDATE, 0, (LPARAM)&date);
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sprintf (info, "You will meet Bush president on %d.%d.%d",
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date.year, date.month, date.day);
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MessageBox (hDlg, info, "Date", MB_OK);
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EndDialog (hDlg, 0);
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}
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}
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break;
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case MSG_CLOSE:
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{
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EndDialog (hDlg, 0);
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}
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return 0;
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}
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return DefaultDialogProc (hDlg, message, wParam, lParam);
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}
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```
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__Figure 1__ Use of month calendar
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----
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[<< List View Control](MiniGUIProgGuidePart6Chapter14.md) |
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[Table of Contents](README.md) |
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[Spin Box Control >>](MiniGUIProgGuidePart6Chapter16.md)
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[Release Notes for MiniGUI 3.2]: /supplementary-docs/Release-Notes-for-MiniGUI-3.2.md
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[Release Notes for MiniGUI 4.0]: /supplementary-docs/Release-Notes-for-MiniGUI-4.0.md
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[Showing Text in Complex or Mixed Scripts]: /supplementary-docs/Showing-Text-in-Complex-or-Mixed-Scripts.md
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[Supporting and Using Extra Input Messages]: /supplementary-docs/Supporting-and-Using-Extra-Input-Messages.md
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[Using CommLCD NEWGAL Engine and Comm IAL Engine]: /supplementary-docs/Using-CommLCD-NEWGAL-Engine-and-Comm-IAL-Engine.md
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[Using Enhanced Font Interfaces]: /supplementary-docs/Using-Enhanced-Font-Interfaces.md
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[Using Images and Fonts on System without File System]: /supplementary-docs/Using-Images-and-Fonts-on-System-without-File-System.md
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[Using SyncUpdateDC to Reduce Screen Flicker]: /supplementary-docs/Using-SyncUpdateDC-to-Reduce-Screen-Flicker.md
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[Writing DRM Engine Driver for Your GPU]: /supplementary-docs/Writing-DRM-Engine-Driver-for-Your-GPU.md
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[Writing MiniGUI Apps for 64-bit Platforms]: /supplementary-docs/Writing-MiniGUI-Apps-for-64-bit-Platforms.md
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[Quick Start]: /user-manual/MiniGUIUserManualQuickStart.md
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[Building MiniGUI]: /user-manual/MiniGUIUserManualBuildingMiniGUI.md
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[Compile-time Configuration]: /user-manual/MiniGUIUserManualCompiletimeConfiguration.md
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[Runtime Configuration]: /user-manual/MiniGUIUserManualRuntimeConfiguration.md
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[Tools]: /user-manual/MiniGUIUserManualTools.md
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[Feature List]: /user-manual/MiniGUIUserManualFeatureList.md
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[MiniGUI Overview]: /MiniGUI-Overview.md
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[MiniGUI User Manual]: /user-manual/README.md
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[MiniGUI Programming Guide]: /programming-guide/README.md
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[MiniGUI Porting Guide]: /porting-guide/README.md
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[MiniGUI Supplementary Documents]: /supplementary-docs/README.md
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[MiniGUI API Reference Manuals]: /api-reference/README.md
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[MiniGUI Official Website]: http://www.minigui.com
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[Beijing FMSoft Technologies Co., Ltd.]: https://www.fmsoft.cn
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[FMSoft Technologies]: https://www.fmsoft.cn
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[HarfBuzz]: https://www.freedesktop.org/wiki/Software/HarfBuzz/
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