Re: Set the desktop back ground color

From:
"AliR \(VC++ MVP\)" <AliR@online.nospam>
Newsgroups:
microsoft.public.vc.mfc
Date:
Thu, 12 Apr 2007 19:07:41 GMT
Message-ID:
<1svTh.14412$JZ3.8714@newssvr13.news.prodigy.net>
Are you talking about the gray color for the frame window of an MDI
application?

If so then you have to do a couple of things:
In your CMainFrame class

declare m_Client
private:
    CClientWnd m_Client;

then:
BOOL CMainFrame::OnCreateClient(LPCREATESTRUCT lpcs, CCreateContext*
pContext)
{
   if (CMDIFrameWnd::OnCreateClient(lpcs, pContext))
   {
      m_Client.SubclassWindow(m_hWndMDIClient);
      return TRUE;
   }
   return FALSE;
}

And here is the implementation of CClientWnd

////////////////header file
#pragma once
// CClientWnd

class CClientWnd : public CWnd
{
 DECLARE_DYNAMIC(CClientWnd)

public:
 CClientWnd();
 virtual ~CClientWnd();

protected:
 afx_msg BOOL OnEraseBkgnd(CDC* pDC);
 DECLARE_MESSAGE_MAP()
};

///////////////cpp file
// ClientWnd.cpp : implementation file
//

#include "stdafx.h"
#include "MDIEditView.h"
#include "ClientWnd.h"
#include ".\clientwnd.h"

// CClientWnd

IMPLEMENT_DYNAMIC(CClientWnd, CWnd)
CClientWnd::CClientWnd()
{
}

CClientWnd::~CClientWnd()
{
}

BEGIN_MESSAGE_MAP(CClientWnd, CWnd)
   ON_WM_ERASEBKGND()
END_MESSAGE_MAP()

// CClientWnd message handlers

BOOL CClientWnd::OnEraseBkgnd(CDC* pDC)
{
   CRect Rect;
   GetClientRect(&Rect);
   pDC->FillSolidRect(&Rect,RGB(255,0,0));

   return TRUE;
}

AliR.

"Michael Nielsen" <not@likely.dk> wrote in message
news:op.tqopk7dkx6hlge@vulture.vrml.aau.dk...

Hi, I want to change the desktop backgrouind color from my MFC program. I
tried doing it by setting the registry key, but then it requires reboot.
How do I tell windows to look up the new color after I changed it?

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