Re: CDateTimeCtrl - C / C++ / MFC Discussion Boards

sschilachi16-Jun-04 9:08

16-Jun-04 9:08

I am responding to an DTN_DROPDOWN message from a CDateTimeCtrl in order to set the day states for the Month Calendar Control that appears when you click the dropdown button. I am using the following code to set the day states, where pCalCtrl is a pointer to the Calender Control that I obtained using CDateTimeCtrl::GetMonthCalCtrl():
pCalCtrl->SetDayState(nMonths,pStates);

The problem is that I get the following line asserts from the SetDayState Function:
ASSERT(GetStyle()&MCS_DAYSTATE);

Why is this happening and how can I resolve it?

Thanks

Re: CDateTimeCtrl

David Crow16-Jun-04 9:21

David Crow

16-Jun-04 9:21

sschilachi wrote:
Why is this happening and how can I resolve it?

The control does not have the MCS_DAYSTATE style, therefore setting the day states makes no sense.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: CDateTimeCtrl

sschilachi16-Jun-04 9:37

sschilachi

16-Jun-04 9:37

How can I set the MCS_DAYSTATE flag, i have tried but i have had no luck?

Re: CDateTimeCtrl

David Crow16-Jun-04 9:45

David Crow

16-Jun-04 9:45

void CMyDialog::OnClick( UINT uId, LPNMHDR, LRESULT * )
{
    CDateTimeCtrl *pDateTimeCtrl;
    CMonthCalCtrl *pMonthCalCtrl;
 
    pDateTimeCtrl = (CDateTimeCtrl *) GetDlgItem(uId);
 
    pMonthCalCtrl = pDateTimeCtrl->GetMonthCalCtrl();
    pMonthCalCtrl->ModifyStyle(0, MCS_DAYSTATE);
    ...
}

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: CDateTimeCtrl

sschilachi16-Jun-04 10:53

sschilachi

16-Jun-04 10:53

The Modify style returned true, but it did not work as the line still asserted.

Can anyone find the code that creates the CMonthCalCtrl object when the dropdown button is clicked, because then I will create my own instance of CMonthCalCtrl, it is just I cannot find the code to mimic its behaviour?

Thanks

Re: CDateTimeCtrl

David Crow16-Jun-04 11:07

David Crow

16-Jun-04 11:07

sschilachi wrote:
Can anyone find the code that creates the CMonthCalCtrl object when the dropdown button is clicked...

The code I provided was from a working project that does just that, except that it adds the MCS_NOTODAY style. Remember that GetMonthCalCtrl() will only return a pointer to the month calendar control while the control actually exists--that is, while it has been dropped-down by the user. Once it has been dismissed (e.g., selecting a date), the control does not actually exist.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: CDateTimeCtrl

sschilachi16-Jun-04 11:16

sschilachi

16-Jun-04 11:16

I know that, I am using the following code in an OnDtnDropdown() message handler for my own wrapper of the CTimeDateCtrl object that is an object in my own custom Toolbar:

CMonthCalCtrl* pCtrl = (CMonthCalCtrl*) GetMonthCalCtrl();<br />
ASSERT(pCtrl != NULL);<br />
pCtrl->ModifyStyle(0, MCS_DAYSTATE);<br />
SYSTEMTIME timeFrom;<br />
SYSTEMTIME timeUntil;<br />
int nCount = pCtrl->GetMonthRange(&timeFrom, &timeUntil, GMR_DAYSTATE);<br />
LPMONTHDAYSTATE pDayState;<br />
pDayState = new MONTHDAYSTATE[nCount];<br />
memset(pDayState, 0, sizeof(MONTHDAYSTATE) * nCount);<br />
int nIndex = (timeFrom.wDay == 1) ? 0 : 1;<br />
pDayState[nIndex] |= BIT4;<br />
pDayState[nIndex] |= BIT19;<br />
pDayState[nIndex] |= BIT25; <br />
pCtrl->SetDayState(nCount, pDayState);<br />
delete [] pDayState;

However when I call pCtrl->SetDayState(), it is there that the problem occurs and it directs me to the line that asserts that i previously mentioned.

The ModifyStyle function used in the third line seems to have no effect, as I checked the return value from pCtrl->GetStyle() before and after the call to ModifyStyle and the result was the same.

By the code to create the CMonthCalCtrl I meant the code that is prewritten in the source code provided with Visual C++, not the code the user writes.

Thanks

Re: CDateTimeCtrl

palbano16-Jun-04 11:31

palbano

16-Jun-04 11:31

from MSDN

After creating the control, you can change all of the styles except for MCS_DAYSTATE and MCS_MULTISELECT. To change these styles, you will need to destroy the existing control and create a new one that has the desired styles. To retrieve or change any other window styles, use the GetWindowLong and SetWindowLong functions.

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/commctls/monthcal/monthcal.asp[^]

"No matter where you go, there your are." - Buckaroo Banzai

-pete

Re: CDateTimeCtrl

sschilachi16-Jun-04 11:34

sschilachi

16-Jun-04 11:34

Thanks, I haven't got time to try that tonight but I will look at it tomorrow

Re: CDateTimeCtrl

sschilachi17-Jun-04 0:38

sschilachi

17-Jun-04 0:38

I have tried to destroy the control using pMonthCalCtrl->DestroyWindow() in response to the user clicking the dropdown button, however, I get an access violation when i run it, how do you destroy the MonthCalCtrl?

Thanks

Re: CDateTimeCtrl

DRHuff25-Aug-04 11:25

DRHuff

25-Aug-04 11:25

Did you ever fix this problem? I am having the same problem in getting bold dates up. If you managed to destroy and recreate the window and get the dates bold I would love to know how.

Hope your still reading.

Thanks

Dave

Re: CDateTimeCtrl

sschilachi25-Aug-04 11:51

sschilachi

25-Aug-04 11:51

No, I looked absolutely everywhere and tried just about everything but I eventually gave up as I couldn't find a solution anywhere. If I do have any success I will let you know, and could you do the same if you find a solution.

Thanks

Re: CDateTimeCtrl

DRHuff25-Aug-04 16:45

DRHuff

25-Aug-04 16:45

Thanks

I will let you know if I solve it as well. Unsure | :~

Dave

Re: CDateTimeCtrl

DRHuff25-Aug-04 18:47

DRHuff

25-Aug-04 18:47

Well I worked around it so that I can use it the way I want! Big Grin | :-D

Basically I added an invisible Month Calendar control which I then set to the same space as the DateTimePickers rect in the DropDown handler. I also set a flag for bMonthShowing.

In the OnPaint method I use the bMonthShowing flag to let me know to reposition the windows

m_pMonth->SetWindowPos(&wndNoTopMost, 0, 0, 1, 1, SWP_NOMOVE | SWP_SHOWWINDOW);
m_ctlMonth.SetWindowPos(&wndTopMost, 0, 0, 1, 1, SWP_NOMOVE | SWP_SHOWWINDOW);

In the CloseUp handler I set the MonthCalendar invisible.

For the month calendar I handle the GetDayStates to set which days I want bold.
In the OnSelect for the month calendar I do the following:

COleDateTime t;
SYSTEMTIME tt;
BOOL ret = m_ctlMonth.GetCurSel(&tt);
t.SetDate(tt.wYear, tt.wMonth, tt.wDay);
m_ctlDatePicker.SetTime(t);

(If I did the GetCurSel directly into a COleDateTime it comes back with an invalid status Confused | :confused:

)

And everything works! <edit> All right I missed one or two (or more) things. oops
What a kludge!

If you want I can send you the whole dialog project. Let me know.

Dave

Re: CDateTimeCtrl

sschilachi16-Jun-04 10:58

sschilachi

16-Jun-04 10:58

I just checked the result of pMonthCalCtrl->GetStyle() before and after the use of the ModifyStyle function and the result is the same. (The ModifyStyle seems to be affecting the wrong style?)

Thanks for all your help so far

Re: CDateTimeCtrl

sschilachi16-Jun-04 10:59

sschilachi

16-Jun-04 10:59

I also tried ModifyStyleEx and that had no effect either.

Re: CDateTimeCtrl

Ravi Bhavnani16-Jun-04 9:55

Ravi Bhavnani

16-Jun-04 9:55

I think this should work:

// Get handle to MonthCalendar control
HWND hwndDP = pCalCtrl->GetSafeHwnd();
ASSERT (hwndDP != NULL);
HWND hwndMC = DateTime_GetMonthCal (hwndDP);
ASSERT (hwndMC != NULL);
CWnd* pMCCtrl = CWnd::FromHandle (hwndMC);
ASSERT (pMCCtrl != NULL);

// Set its style
DWORD dwStyle = pMCCtrl->GetStyle();
dwStyle |= MCS_DAYSTATE;
pMCCtrl->SetStyle (dwStyle);

/ravi

My new year's resolution: 2048 x 1536
Home | Articles | Freeware | Music
ravib@ravib.com

Re: CDateTimeCtrl

palbano16-Jun-04 10:02

palbano

16-Jun-04 10:02

"No matter where you go, there your are." - Buckaroo Banzai

-pete

Re: CDateTimeCtrl

Ravi Bhavnani16-Jun-04 10:05

Ravi Bhavnani

16-Jun-04 10:05

The intent was to show every step in detail.

/ravi

My new year's resolution: 2048 x 1536
Home | Articles | Freeware | Music
ravib@ravib.com

Re: CDateTimeCtrl

palbano16-Jun-04 10:22

palbano

16-Jun-04 10:22

pMCCtrl->SetStyle (dwStyle);

No such function as CWnd::SetStyle()

"No matter where you go, there your are." - Buckaroo Banzai

-pete

Re: CDateTimeCtrl

Ravi Bhavnani16-Jun-04 10:33

Ravi Bhavnani

16-Jun-04 10:33

Gak! What was I thinking!? Blush | :O

Thank you!

/ravi

My new year's resolution: 2048 x 1536
Home | Articles | Freeware | Music
ravib@ravib.com

Bitmap Background for CDialog

DanYELL16-Jun-04 9:02

DanYELL

16-Jun-04 9:02

There is cool code here:

http://www.codeproject.com/dialog/bmpdlg01.asp

that shows how to make a bitmap a background for a
CDialog. I have a rather large bitmap, its about 1600x
600 pixels and when I use that bitmap, it looks great
but if I scroll up or down, the images flickers or doubles
up or drags with the scrolling and looks really bad.

Any chance any one has experienced this and has a
resolution? I tried just laying the bitmap in a CDialog
and laying edit boxes on top of the bitmap. But the
edit boxes disappear under the bitmap and Im just perplexed.

Please, any response any one can give me will be greatly
appreciated.

Sincerely,
Danielle (an overworked graduate student)

Re: Bitmap Background for CDialog

palbano16-Jun-04 10:47

palbano

16-Jun-04 10:47

Just poking around here, this probably won't work... but if your image covers the entire dialog surface try NOT calling the base class CDialog::OnEraseBackground().

"No matter where you go, there your are." - Buckaroo Banzai

-pete

begginner needing help

bmatty16-Jun-04 9:01

bmatty

16-Jun-04 9:01

hi all
i am just starting to try and learn c++. i am finding this site very helpfull. does any1 else out there have ny other tips,web sites or just genral help for me? i would be really greatfull if you do!

thanks a lot

Matthew Burns

P.S you can also email me should you want to for any reason on amattburns178@hotmail.com

matty b

Re: begginner needing help

toxcct16-Jun-04 9:57

toxcct

16-Jun-04 9:57

hey, the forum is for asking specific programming questions... we cannot guess what you need and what you don't.

ask for something, you'll get an answer (we'll try to...)

for C++, you can have a look at The C++ Language (but it's a book, not a site) from Bjarne Stroustrup, even if it is not for beginners (say Maxwell chen... Big Grin | :-D

hello maxwell Poke tongue | ;-P

)

TOXCCT >>> GEII power

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.