CDateTimeCtrl - background color

[Smirnove]

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

[JensC]

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:

COLORREF SetBackgroundColor(BOOL bSysColor, COLORREF cr);

COLORREF m_bkgd_color;
CBrush* m_bkgd_brush;

Add this to the .cpp file:

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:

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.

[JensC]

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.

[JensC]

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

Live long and prosper

JensC

[andwan0]

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

[JensC]

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

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

[andwan0]

Manually derived from CDateTimeCtrl with no wizard....

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

[VictorN]

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

[krmed]

Not bad for an eight year old thread!

[VictorN]

Not bad for an eight year old thread!

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

[JensC]

Some things never die.....

[VictorN]

Some things never die.....

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

[ovidiucucu]

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

[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?

[ovidiucucu]

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

Anybody know a solution under Windows 7?

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 ]