C / C++ / MFC

BOOL CMyDialog::OnEraseBkgnd(CDC* pDC)
{
	pDC->FillSolidRect(0, 0, 32000, 32000, RGB(0, 0, 255)); // blue
	return TRUE;
}

BOOL CMyCoolApp::InitInstance()
{
   WNDCLASS wc;
   // Get the info for this class.
   // #32770 is the default class name for dialogs boxes.
   ::GetClassInfo(m_hInstance, _T("#32770"), &wc);
   // Change the name of the class.
   wc.lpszClassName = _T("My cool Blue Dialog class");

   // change the class background color
   CBrush brush(RGB(0,0,255));
   wc.hbrBackground = brush;
   brush.Detach();
   // chage also the class window procedure 
   wc.lpfnWndProc   = DefWindowProc; 
   // Register this class.
   AfxRegisterClass(&wc);
   // ...and finally...
   /* --------------------------------------------------------
      Add CLASS statement in DIALOG resource like for example
   -----------------------------------------------------------
      IDD_ABOUTBOX DIALOG DISCARDABLE  0, 0, 235, 55
      STYLE DS_MODALFRAME | WS_POPUP | WS_CAPTION | WS_SYSMENU
      CAPTION "About My Cool App"
      CLASS "My cool Blue Dialog class"
   */
// ...
}

	POSITION currPos;


	char strFilter[] = { "Mp3 files (*.mp3)|*.mp3|All Files (*.*)|*.*||" };

	CFileDialog avi(TRUE, ".mp3",NULL,OFN_ALLOWMULTISELECT | OFN_HIDEREADONLY, strFilter);

    char drive[_MAX_DRIVE], middle[_MAX_PATH], filename[_MAX_FNAME], ext[_MAX_EXT];


     if(avi.DoModal() == IDOK)
	 { 

   currPos = avi.GetStartPosition();

     while(currPos != NULL)            
					
	 {
  m_SongName = avi.GetNextPathName(currPos);
_splitpath (m_SongName, drive, middle, filename, ext);
m_list7.AddString(m_SongName);