/ fall through
case SB_LINEUP :
iColor[iIndex] = max (0, iColor[iIndex] - 1) ;
break ;
case SB_TOP :
iColor[iIndex] = 0 ;
break ;
case SB_BOTTOM :
iColor[iIndex] = 255 ;
break ;
case SB_THUMBPOSITION :
case SB_THUMBTRACK :
iColor[iIndex] = HIWORD (wParam) ;
break ;
default :
return FALSE ;
}
SetScrollPos (hCtrl, SB_CTL, iColor[iIndex], TRUE) ;
SetDlgItemInt (hDlg, iCtrlID + 3, iColor[iIndex], FALSE) ;
DeleteObject ((HGDIOBJ) SetClassLong (hwndParent, GCL_HBRBACKGROUND,
(LONG) CreateSolidBrush (
RGB (iColor[0], iColor[1], iColor[2])))) ;
InvalidateRect (hwndParent, NULL, TRUE) ;
return TRUE ;
}
return FALSE ;
}
COLORS2.RC （摘录）
//Microsoft Developer Studio generated resource script.
#include "resource.h"
#include "afxres.h"
/////////////////////////////////////////////////////////////////////////////
// Dialog
COLORSCRDLG DIALOG DISCARDABLE 16, 16, 120, 141
STYLE DS_MODALFRAME | WS_POPUP | WS_VISIBLE | WS_CAPTION
CAPTION "Color Scroll Scrollbars"
FONT 8, "MS Sans Serif"
BEGIN
CTEXT "&Red",IDC_STATIC,8,8,24,8,NOT WS_GROUP
S |