CMonthCalCtrl

[HalD]

Is there a way to disable the left click date selection in the CMonthCalCtrl? I want to display a one month calendar but do not need to be able to select days.

Thanks in advance,
Hal

[Emi]

Hi,

Create your own MonthCal class derived from CMonthCalCtrl and handle the WM_LBUTTONDOWN/UP message. See this// header
class CMyMonthCal : public CMonthCalCtrl
{
// Construction
public:
CMyMonthCal();

// Attributes
public:

// Operations
public:

// Overrides
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CMyMonthCal)
protected:
virtual LRESULT WindowProc(UINT message, WPARAM wParam, LPARAM lParam);
//}}AFX_VIRTUAL

// Implementation
public:
virtual ~CMyMonthCal();

// Generated message map functions
protected:
//{{AFX_MSG(CMyMonthCal)
//}}AFX_MSG

DECLARE_MESSAGE_MAP()
};
// cpp file
#include "MyMonthCal.h"

CMyMonthCal::CMyMonthCal()
{
}

CMyMonthCal::~CMyMonthCal()
{
}


BEGIN_MESSAGE_MAP(CMyMonthCal, CMonthCalCtrl)
//{{AFX_MSG_MAP(CMyMonthCal)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMyMonthCal message handlers

LRESULT CMyMonthCal::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
{
if ((message == WM_LBUTTONDOWN) || (message == WM_LBUTTONUP))
return 1;

return CMonthCalCtrl::WindowProc(message, wParam, lParam);
}

Now put a MonthCal resource on your dialog (for example) and add a member variable of Control type. Instead using the default CMonthCalCtrl class put CMyMonthCal. Then left button message are disabled.

Regards,

Emi

[HalD]

Thanks for the reply. It does disable the day selection as I want, but I can no longer select another month. Can the WPARAM or LPARAM be used to determine if the click was in the calendar or in the title bar?

Regards,
Hal

[Emi]

Sure. See this sampleLRESULT CMyMonthCal::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
{
if ((message == WM_LBUTTONDOWN) || (message == WM_LBUTTONUP))
{
int xPos = LOWORD(lParam);
int yPos = HIWORD(lParam);

TRACE("xPos = %d, yPos = %d\n", xPos, yPos);
if (yPos > 25)
return 1;
}

return CMonthCalCtrl::WindowProc(message, wParam, lParam);
}


But you have to know the size of title bar.

Regards,

Emi

[Emi]

if (yPos > GetSystemMetrics(SM_CYSIZE))
return 1;
// change to this




Regards,

Emi

[HalD]

Perfect.

Thanks,
Hal

[Emi]

You're welcome.

Regards,

Emi

[HalD]

Two more questions if you don't mind. Now that we have disabled the date selection I would like to know if there is a way to get the control to not display the current date highlighted (not the today circle but the blue oval around the current day). When I change months the same day is highlighed on the new month.

The second question is how can I intercept key presses so I can make the HOME and CTRL-HOME keys return the calendar to the current month. I added a check for the WM_KEYDOWN message in the WindowProc but that did not work.

Thanks again for the help with the previous problem,
Hal

[Emi]

Hi,

For 'not the today circle but the blue oval around the current day' turn off the No Today Circle property from resource or usebRet = m_MyMonthCal.ModifyStyle(0, MCS_NOTODAYCIRCLE);
TRACE("bRet = %d\n", bRet);




Regards,

Emi

[Emi]

Now regarding catching the WM_KEYDOWN message all you have to do is to set the focus on your month calendarm_MyMonthCal.SetFocus();
//
LRESULT CMyMonthCal::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
{
if (message == WM_KEYDOWN)
TRACE("WM_KEYDOWN in CMyMonthCal::WindowProc\n");

return CMonthCalCtrl::WindowProc(message, wParam, lParam);
}




Regards,

Emi

[HalD]

I added the SetFocus() to the OnInitDialog function of the dialog that owns the calendar and added the test for WM_KEYDOWN in the calendar's WindowProc and set a breakpoint on the if statement but it never gets control. Here's the function:

LRESULT CCalendar::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
{
if ((message == WM_LBUTTONDOWN) || (message == WM_LBUTTONUP))
{
int xPos = LOWORD(lParam);
int yPos = HIWORD(lParam);
TRACE("xPos = %d, yPos = %d\n", xPos, yPos);
if (yPos > GetSystemMetrics(SM_CYSIZE))
return 1;
}
if (message == WM_KEYDOWN)
TRACE("WM_KEYDOWN in CCalendar:::WindowProc\n");
return CMonthCalCtrl::WindowProc(message, wParam, lParam);




I also clicked in the calendar to make sure it had the focus.

-----

Regarding the blue oval around the current date, I guess my explanation of what I want to do was confussing. I was afraid that you might think I was referring to the red today circle. What I am trying to do is to remove the blue oval that initially highlights the current day and moves when a new date is selected (not the red today circle). Being that I have disabled the ability to select dates, I thought it would be nice if I could get rid of the highlight.

Sorry for the confusion. Regards,
Hal

[Emi]

That's strange. If you want I'll send you a zip files with a small example.

Regards,

Emi

[HalD]

Please send me a sample. My email address is hal@haldeemar.com

Thanks again,
Hal

[p.udayakishore]

Hi I am Uday,

I need information on cmonth calender control.
can i have any coding for removing default selected date on that control...????