901223 - how to change background color of a dialog?

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hi for changing the default background color of a dialog, i tried overriding it PreCreateWindow function:

C++

BOOL CMyDialog::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Add your specialized code here and/or call the base class
	if (CDialog::PreCreateWindow(cs) == FALSE)
		return FALSE;

	CBrush br;
	VERIFY(br.CreateSolidBrush(RGB(251, 235, 202)));
	cs.lpszClass = AfxRegisterWndClass(0, ::LoadCursor(NULL, IDC_ARROW), br, NULL);

	return TRUE;
}

but it seems that DoModal doesn't cause it to be called.
what's ur suggestion?

Posted 13-Mar-12 2:53am

ilostmyid2

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3 solutions

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Maximilien · Answer 1 · 2012-03-13T08:25:00

Solution 3

spoon feeding the answer.

C++

CngfhnDlg::CngfhnDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CngfhnDlg::IDD, pParent)
{
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	m_brush.CreateSolidBrush(RGB(0, 255, 0));
}


HBRUSH CngfhnDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
 HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);

 // Return handle to our CBrush object
 hbr = m_brush;

 return hbr;
}

Posted 13-Mar-12 8:25am

Maximilien

Comments

DrBones69 13-Mar-12 22:48pm

This works for the initial color, but what about dynamically changing the color?

Maximilien 14-Mar-12 9:04am

how about recreating the brush with a new color ?

Maximilien · Answer 2 · 2012-03-13T02:58:00

Solution 1

(other than saying that it will never look good and is probably contrary to Microsoft's UX guideline )

Have a look at CWnd::OnCtlColor[^].

Posted 13-Mar-12 2:58am

Maximilien

Comments

ilostmyid2 13-Mar-12 9:08am

thank u :)
1. what's the problem with the code i wrote?!
2. it worked, but is it possible to setup a handler for WM_ERASEBKGND and call FillSolidRect there? if so, which one of the two ways is better?
thx

Maximilien 13-Mar-12 14:25pm

have you looked at CWnd::OnCtlColor ? this is what is used to change the background of a dialog...

Richard MacCutchan · Answer 3 · 2012-03-13T06:44:00

Solution 2

Dialog Box with gradient background and Color changing progress bar[^] is a useful article.

Posted 13-Mar-12 6:44am

Richard MacCutchan

Comments

ilostmyid2 13-Mar-12 13:18pm

thx