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Simple Reminder Application

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22 Sep 2006CPOL6 min read 143.7K   13.2K   33  
The article presents a simple Reminder application, using registry to store the reminders.
 
#include "Reminder_APP.h"
#include "Dialog_Date.h"
#include "Status_List_Reg.h"
#include "resource.h"


extern struct CLICKEDITEMDATA ClickedItemData;


//convert a date string to integer values of day,month and year
//used for filling data in dialog box
void DateStringtoDateComponents(TCHAR *szDate,short *day, short *month, short *year)
{
	TCHAR *a=szDate;
	TCHAR szDay[3],szMonth[3],szYear[5];
	TCHAR temp[10]=L"";
	short i=0,j=0;
	short dm=0;
	
	while('\0'!=a[i])
	{
	if('-'==a[i])
	{
		if(0==dm)
		{
			lstrcpy(szDay,temp);
			ZeroMemory(temp,sizeof(temp));
			dm=1;
			i++;
			j=0;
			continue;
		}
		else
		{
			lstrcpy(szMonth,temp);
			ZeroMemory(temp,sizeof(temp));
			dm=0;
			i++;
			j=0;
			continue;
		}

	}
	temp[j]=a[i];
	j++;
	i++;
	}
	lstrcpy(szYear,temp);

	*day=(short)_wtoi(szDay);
	*month=(short)_wtoi(szMonth);
	*year=(short)_wtoi(szYear);


}


//to convert day,month and year in date string which can be stored in 
//registry and displayed in listview control
void DateComponentstoDateString(const short day,const short month,const short year,TCHAR *szDateString)
{
	TCHAR temp[10]=L"";
	ZeroMemory(szDateString,lstrlen(szDateString));

	_itow(day,temp,10);
	if(day>9)
	{
		lstrcpy(szDateString,temp);	
	}
	else
	{
		lstrcpy(szDateString,L"0");
		lstrcpy(szDateString,temp);
	}

	lstrcat(szDateString,L"-");

	ZeroMemory(temp,sizeof(temp));
	
	_itow(month,temp,10);

	if(month>9)
	{
		lstrcat(szDateString,temp);
	}
	else
	{
		lstrcat(szDateString,L"0");
		lstrcat(szDateString,temp);
	}
	
	lstrcat(szDateString,L"-");

	ZeroMemory(temp,sizeof(temp));
	_itow(year,temp,10);

	lstrcat(szDateString,temp);
}

//convert a time string to integer values of hour,minute and AM/PM
//used for filling data in dialog box
void TimeStringtoTimeComponents(TCHAR *szTime,short *hour, short *minute, short *AMP)
{
	TCHAR *a=szTime;
	TCHAR szHour[3],szMinute[3],szAMP[3]=L"AM";
	TCHAR temp[10]=L"";
	short i=0,j=0;
	short hm=0;
	

	while('\0'!=a[i])
	{
	if(':'==a[i])
	{
		if(0==hm)
		{
			lstrcpy(szHour,temp);
			ZeroMemory(temp,sizeof(temp));
			hm=1;
			i++;
			j=0;
			continue;
		}
		else
		{
			lstrcpy(szMinute,temp);
			ZeroMemory(temp,sizeof(temp));
			hm=0;
			i++;
			j=0;
			continue;
		}

	}
	temp[j]=a[i];
	j++;
	i++;
	}
	
	if(!lstrcmpi (szAMP,temp))
		*AMP=0;
	else
		*AMP=1;


	*hour=(short)_wtoi(szHour);
	*minute=(short)_wtoi(szMinute);
	
}

//to convert hour,minute and AM/PM in time string which can be stored in 
//registry and displayed in listview control
void TimeComponentstoTimeString(const short hour,const short minute,const short AMP,TCHAR *szTimeString)
{
	
	TCHAR temp[10]=L"";
	//TCHAR szTimeString[15]=L"";
	ZeroMemory(szTimeString,lstrlen(szTimeString));

	_itow(hour,temp,10);
	if(hour>9)
	{
		lstrcpy(szTimeString,temp);	
	}
	else
	{
		lstrcpy(szTimeString,L"0");
		lstrcat(szTimeString,temp);
	}
	
	lstrcat(szTimeString,L":");

	ZeroMemory(temp,sizeof(temp));
	_itow(minute,temp,10);
	if(minute>9)
	{
		lstrcat(szTimeString,temp);
	}
	else
	{
		lstrcat(szTimeString,L"0");
		lstrcat(szTimeString,temp);
	}
	
	lstrcat(szTimeString,L":");

	ZeroMemory(temp,sizeof(temp));
	if(0==AMP)
	lstrcat(szTimeString,L"AM");
	else 
	lstrcat(szTimeString,L"PM");
		
}

//initialise the drop down values in various input parameters in dialog box
int FillDefaultDatainDialogBox(const HWND hDlg)
{
	SYSTEMTIME SystemTime={sizeof(SYSTEMTIME)};
	int i=0;
	TCHAR szTemp[5]=L"";
	//set limit of edit box
	SendDlgItemMessage(hDlg,IDC_REMINDER,EM_LIMITTEXT ,(WPARAM)MAX_REMINDER_IN_EDIT_BOX,0);
	//set selection to current time
	GetLocalTime(&SystemTime);
	//fill day for date combo box
	for(i=1;i<=31;i++)
	{
		ZeroMemory(szTemp,sizeof(szTemp));
		_itow(i,szTemp,10);
		SendDlgItemMessage(hDlg,IDC_DATE_DAY,CB_ADDSTRING,0,(LPARAM)szTemp);
	}
	//fill month for date combo box
	for(i=1;i<=12;i++)
	{
		ZeroMemory(szTemp,sizeof(szTemp));
		_itow(i,szTemp,10);
		SendDlgItemMessage(hDlg,IDC_DATE_MONTH,CB_ADDSTRING,0,(LPARAM)szTemp);
	}
	//fill year(from current) for date combo box
	for(i=SystemTime.wYear;i<=(SystemTime.wYear+10);i++)
	{
		ZeroMemory(szTemp,sizeof(szTemp));
		_itow(i,szTemp,10);
		SendDlgItemMessage(hDlg,IDC_DATE_YEAR,CB_ADDSTRING,0,(LPARAM)szTemp);
	}
	//fill hour for time combo box
	for(i=1;i<=12;i++)
	{
		ZeroMemory(szTemp,sizeof(szTemp));
		_itow(i,szTemp,10);
		SendDlgItemMessage(hDlg,IDC_TIME_HOURS,CB_ADDSTRING,0,(LPARAM)szTemp);
	}
	//fill minutes for time combo box
	for(i=0;i<=59;i++)
	{
		ZeroMemory(szTemp,sizeof(szTemp));
		_itow(i,szTemp,10);
		SendDlgItemMessage(hDlg,IDC_TIME_MINUTES,CB_ADDSTRING,0,(LPARAM)szTemp);
	}
	//fill am/pm for time combo box
	SendDlgItemMessage(hDlg,IDC_TIME_AMP,CB_ADDSTRING,0,(LPARAM)L"A.M.");
	SendDlgItemMessage(hDlg,IDC_TIME_AMP,CB_ADDSTRING,0,(LPARAM)L"P.M.");

	//setting time in 12-hr format
	short SystemHour=0,SystemAMP=0;

	if(SystemTime.wHour<12)
	{
		if(SystemTime.wHour==0)
			SystemHour=12;
		else
			SystemHour=SystemTime.wHour;
		SystemAMP=0;
	}
	else
	{
		if(SystemTime.wHour==12)
			SystemHour=12;
		else
			SystemHour=SystemTime.wHour-12;
		SystemAMP=1;
	}
	//setting focus to current time
	SendDlgItemMessage(hDlg,IDC_DATE_DAY,CB_SETCURSEL,SystemTime.wDay-1,0);
	SendDlgItemMessage(hDlg,IDC_DATE_MONTH,CB_SETCURSEL,SystemTime.wMonth-1,0);
    SendDlgItemMessage(hDlg,IDC_DATE_YEAR,CB_SETCURSEL,0,0);
	SendDlgItemMessage(hDlg,IDC_TIME_HOURS,CB_SETCURSEL,SystemHour-1,0);
	SendDlgItemMessage(hDlg,IDC_TIME_MINUTES,CB_SETCURSEL,SystemTime.wMinute,0);
	SendDlgItemMessage(hDlg,IDC_TIME_AMP,CB_SETCURSEL,SystemAMP,0);
	return 0;
}



//once save button clicked on dialog
int SaveDialogButton(const HWND hDlg,const HKEY hKey)
{
	short hour=0,minute=0,AMP=0;
	TCHAR szTimeString[15]=L"";
	short day=0,month=0,year=0;
	TCHAR szDateString[15]=L"";
	TCHAR szBuffer[10]=L"";
	TCHAR szReminder[MAX_REMINDER_IN_EDIT_BOX+1]=L"";
	SYSTEMTIME SystemTime={sizeof(SYSTEMTIME)};
	LRESULT lResult=-1;
	short SystemHour=0,SystemMinute=0,SystemAMP=0;
	//Add one for zero based selection index.So adding 1 to get relevant integer value
	day = (short)SendDlgItemMessage(hDlg,IDC_DATE_DAY,CB_GETCURSEL,0,0)+1;
	month = (short)SendDlgItemMessage(hDlg,IDC_DATE_MONTH,CB_GETCURSEL,0,0)+1;
	//here we require to get year in string and then convert it to int
	lResult = SendDlgItemMessage(hDlg,IDC_DATE_YEAR,CB_GETCURSEL,0,0);
	SendDlgItemMessage(hDlg,IDC_DATE_YEAR,CB_GETLBTEXT,lResult,(LPARAM)szBuffer);
	year=(short)_wtoi(szBuffer);
	//check if data fed is correct
	GetLocalTime(&SystemTime);
	
	//Add one for zero based selection index.
	hour = (short)SendDlgItemMessage(hDlg,IDC_TIME_HOURS,CB_GETCURSEL,0,0)+1;
	minute = (short)SendDlgItemMessage(hDlg,IDC_TIME_MINUTES,CB_GETCURSEL,0,0);
	AMP = (short)SendDlgItemMessage(hDlg,IDC_TIME_AMP,CB_GETCURSEL,0,0);
	//setting time in 12-hr format
	if(SystemTime.wHour<12)
	{
		if(SystemTime.wHour==0)
			SystemHour=12;
		else
			SystemHour=SystemTime.wHour;
		SystemAMP=0;
	}
	else
	{
		if(SystemTime.wHour==12)
			SystemHour=12;
		else
			SystemHour=SystemTime.wHour-12;
		SystemAMP=1;
	}
	SystemMinute=SystemTime.wMinute;


	//check past date
	//for year we need not check as the year drop down will have no previous year in it
	if((month < SystemTime.wMonth)||((day < SystemTime.wDay)&&(month <= SystemTime.wMonth)))
	{
		MessageBox(hDlg,L"Incorrect Date Parameters",L"Date/Time Error",0);
		return FALSE;
	}

	//check for current date if same then see if time is past 
	if((day==SystemTime.wDay)&&(month==SystemTime.wMonth)&&(year==SystemTime.wYear))
	{
		//see past time, should be done after date check
		if(SystemAMP>AMP)
		{	
			MessageBox(hDlg,L"Incorrect Time Parameters",L"Date/Time Error",0);
			return FALSE;
		}
		if((SystemAMP==AMP)&&((hour<SystemHour)||((hour==SystemHour)&&(minute<=SystemMinute))))
		{
			MessageBox(hDlg,L"Incorrect Time Parameters",L"Date/Time Error",0);
			return FALSE;
		}
	}

	//february month
	if(day>28&&month==2)
	{
		MessageBox(hDlg,L"Incorrect Date Parameters",L"Date/Time Error",0);
		return FALSE;
	}
	//for checking 31 days for months
	if(day==31&&(!(month==1||month==3||month==5||month==7||month==8||month==10||month==12)))
	{
		MessageBox(hDlg,L"Incorrect Date Parameters",L"Date/Time Error",0);
		return FALSE;
	}
	
	//convert into time and date string
	TimeComponentstoTimeString(hour,minute,AMP,szTimeString);
	DateComponentstoDateString(day,month,year,szDateString);
	SendDlgItemMessage(hDlg,IDC_REMINDER,WM_GETTEXT,(WPARAM)sizeof(szReminder),(LPARAM)szReminder);
	//see if data is put in reminder section
	if(!lstrlen(szReminder))
	{
		MessageBox(hDlg,L"Invalid Reminder input",L"Reminder input error",0);
		return FALSE;
	}
	//check if data has been edited or new reminder is added
	if((!lstrcmpi(szTimeString,ClickedItemData.szTime))&&(!lstrcmpi(szDateString,ClickedItemData.szDate)))
		AddDatatoRegistry(hKey,szDateString,szTimeString,szReminder);//new data is added
	else
	{	
		//data is modified
		AddDatatoRegistry(hKey,szDateString,szTimeString,szReminder);
		if(ClickedItemData.DatainsideListBox)
			DeleteDatafromRegistry(hKey,ClickedItemData.szDate,ClickedItemData.szTime);
	}
	SendMessage(hDlg,WM_CLOSE,0,0);
	return TRUE;
}


//for delete button on dialog box
int DeleteDialogButton(const HWND hDlg,const HKEY hKey)
{
	short hour=0,minute=0,AMP=0;
	TCHAR szTimeString[15]=L"";
	short day=0,month=0,year=0;
	TCHAR szDateString[15]=L"";
	TCHAR szBuffer[10]=L"";
	LRESULT lResult=-1;

	//Add one for zero based selection index.So adding 1 to get relevant integer value
	day = (short)SendDlgItemMessage(hDlg,IDC_DATE_DAY,CB_GETCURSEL,0,0)+1;
	month = (short)SendDlgItemMessage(hDlg,IDC_DATE_MONTH,CB_GETCURSEL,0,0)+1;
	//here we require to get year in string and then convert it to int
	lResult = SendDlgItemMessage(hDlg,IDC_DATE_YEAR,CB_GETCURSEL,0,0);
	SendDlgItemMessage(hDlg,IDC_DATE_YEAR,CB_GETLBTEXT,lResult,(LPARAM)szBuffer);
	year=(short)_wtoi(szBuffer);
	DateComponentstoDateString(day,month,year,szDateString);
	//Add one for zero based selection index.
	hour = (short)SendDlgItemMessage(hDlg,IDC_TIME_HOURS,CB_GETCURSEL,0,0)+1;
	minute = (short)SendDlgItemMessage(hDlg,IDC_TIME_MINUTES,CB_GETCURSEL,0,0);
	AMP = (short)SendDlgItemMessage(hDlg,IDC_TIME_AMP,CB_GETCURSEL,0,0);
	TimeComponentstoTimeString(hour,minute,AMP,szTimeString);
	DeleteDatafromRegistry(hKey,szDateString,szTimeString);
	SendMessage(hDlg,WM_CLOSE,0,0);
	return 0;
}

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
kaviteshsingh
Software Developer (Senior)
United States United States
This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.

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Posted 22 Sep 2006

Article Copyright 2006 by kaviteshsingh
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