CDateTimeCtrl - background color

Hi!
Who know how change background color of CDateTimeCtrl (in edit-part of control)?
Thanks!

Create a new class CMyDateTimeCtrl deriving it from CDateTimeCtrl using class wizard and add a handler for the WM_ERASEBKGND message

Add the following to the .h file:

Code:

---

COLORREF SetBackgroundColor(BOOL bSysColor, COLORREF cr);

COLORREF m_bkgd_color;
CBrush* m_bkgd_brush;

---

Add this to the .cpp file:

Code:

---

COLORREF CMyDateTimeCtrl::SetBackgroundColor(BOOL bSysColor, COLORREF cr)
{
        COLORREF ret_color = m_bkgd_color; // return old color
        m_bkgd_color = bSysColor ? ::GetSysColor(COLOR_WINDOW) : cr;
        if (ret_color != m_bkgd_color) // color changed?
        {
            delete m_bkgd_brush; // throw away old brush
            m_bkgd_brush = new CBrush(m_bkgd_color); // buy a new one ;-)               
            Invalidate(); // repaint
        }
        return ret_color;
}

BOOL CMyDateTimeCtrl::OnEraseBkgnd(CDC* pDC)
{
        CBrush * old_brush = pDC->SelectObject(m_bkgd_brush);
        CRect rect;
        pDC->GetClipBox(&rect);
        pDC->PatBlt(rect.left, rect.top, rect.Width(), rect.Height(), PATCOPY);
        pDC->SelectObject(old_brush);
        return TRUE;
}

---

Your constructor and destructor should be changed to this:

Code:

---

CMyDateTimeCtrl::CMyDateTimeCtrl()
        : CDateTimeCtrl(), m_bkgd_color(::GetSysColor(COLOR_WINDOW))
{
        m_bkgd_brush = new CBrush(::GetSysColor(COLOR_WINDOW));
}

CMyDateTimeCtrl::~CMyDateTimeCtrl()
{
        delete m_bkgd_brush;
}

---

HTH

Jens C.

Oops, I did it again!! The call to Invalidate() does not belong to the comment. Please insert CR/LF in front of it. Sorry for the GBF (General Brain Failure).

Jens C.

And another one... Please replace COLOR_BACKGROUND by COLOR_WINDOW. Sorry again.

Live long and prosper

JensC

And also add BOOL OnEraseBkgnd(CDC* pDC); to the header file too ;)

And replace those HTML > codes with > symbol ;)


error C2084: function '__thiscall CMyDateTimeCtrl::~ CMyDateTimeCtrl(void)' already has a body

Quote:

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Originally Posted by andwan0

And also add BOOL OnEraseBkgnd(CDC* pDC); to the header file too ;)

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This is done by the wizard. Maybe you didn't follow the instructions above!?

Manually derived from CDateTimeCtrl with no wizard....

btw, does this paint the box (of the drop down bit)?

No, this box is not belong to the *background*.

Not bad for an eight year old thread!

Quote:

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Originally Posted by krmed

Not bad for an eight year old thread!

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Good point! :D :D
And I only looked at the last post date! :D:rolleyes:

Some things never die..... ;)

Quote:

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Originally Posted by JensC

Some things never die..... ;)

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Well "some thins" is the "Old love":
Old love never dies! :D

I truly hope, at least the OP is still alive. :D

This is a very nice solution, but it unfortunately doesn't appear to work on Windows 7.

Anybody know a solution under Windows 7?

Quote:

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Originally Posted by wbrouhaha

This is a very nice solution, but it unfortunately doesn't appear to work on Windows 7.

Anybody know a solution under Windows 7?

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And probably it doesn't appear to work under Windows 8 and further Windows...
Please, if you have a new problem, open a new thread and don't wake up very old ones!

[ Thread closed ]