src/msw/statbox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/statbox.cpp
   3 // Purpose:     wxStaticBox
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "statbox.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_STATBOX
  32
  33 #ifndef WX_PRECOMP
  34     #include "wx/app.h"
  35     #include "wx/dcclient.h"
  36 #endif
  37
  38 #include "wx/statbox.h"
  39
  40 #include "wx/msw/private.h"
  41
  42 // ----------------------------------------------------------------------------
  43 // wxWin macros
  44 // ----------------------------------------------------------------------------
  45
  46 IMPLEMENT_DYNAMIC_CLASS(wxStaticBox, wxControl)
  47 /*
  48         TODO PROPERTIES :
  49                 label
  50 */
  51
  52 // ============================================================================
  53 // implementation
  54 // ============================================================================
  55
  56 // ----------------------------------------------------------------------------
  57 // wxStaticBox
  58 // ----------------------------------------------------------------------------
  59
  60 bool wxStaticBox::Create(wxWindow *parent,
  61                          wxWindowID id,
  62                          const wxString& label,
  63                          const wxPoint& pos,
  64                          const wxSize& size,
  65                          long style,
  66                          const wxString& name)
  67 {
  68     if ( !CreateControl(parent, id, pos, size, style, wxDefaultValidator, name) )
  69         return FALSE;
  70
  71     // as wxStaticBox doesn't draw its own background, we make it transparent
  72     // to force redrawing its background which could have been overwritten by
  73     // the other controls inside it
  74     //
  75     // FIXME: I still think that it isn't the right solution because the static
  76     //        boxes shouldn't have to be transparent if the redrawing was done
  77     //        right elsewhere - who ever had to make them transparent in non
  78     //        wxWindows programs, after all? But for now it does fix a serious
  79     //        problem (try resizing the sizers test screen in the layout sample
  80     //        after removing WS_EX_TRANSPARENT bit) and so let's use it until
  81     //        we fix the real underlying problem
  82     if ( !MSWCreateControl(wxT("BUTTON"), BS_GROUPBOX, pos, size, label,
  83 #ifdef __WXWINCE__
  84         0
  85 #else
  86         WS_EX_TRANSPARENT
  87 #endif
  88                            ) )
  89         return FALSE;
  90
  91     // to be transparent we should have the same colour as the parent as well
  92     SetBackgroundColour(GetParent()->GetBackgroundColour());
  93
  94     return TRUE;
  95 }
  96
  97 wxSize wxStaticBox::DoGetBestSize() const
  98 {
  99     int cx, cy;
 100     wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
 101
 102     int wBox;
 103     GetTextExtent(wxGetWindowText(m_hWnd), &wBox, &cy);
 104
 105     wBox += 3*cx;
 106     int hBox = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
 107
 108     return wxSize(wBox, hBox);
 109 }
 110
 111 long wxStaticBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 112 {
 113     switch ( nMsg )
 114     {
 115 #ifndef __WXWINCE__
 116         case WM_NCHITTEST:
 117             // FIXME: this hack is specific to dialog ed, shouldn't it be
 118             //        somehow disabled during normal operation?
 119             {
 120                 int xPos = LOWORD(lParam);  // horizontal position of cursor
 121                 int yPos = HIWORD(lParam);  // vertical position of cursor
 122
 123                 ScreenToClient(&xPos, &yPos);
 124
 125                 // Make sure you can drag by the top of the groupbox, but let
 126                 // other (enclosed) controls get mouse events also
 127                 if ( yPos < 10 )
 128                     return (long)HTCLIENT;
 129             }
 130             break;
 131 #endif
 132         case WM_ERASEBKGND:
 133             // prevent wxControl from processing this message because it will
 134             // erase the background incorrectly and there is no way for us to
 135             // override this at wxWin event level (if we do process the event,
 136             // we don't know how to do it properly - paint the background
 137             // without painting over other controls - and if we don't,
 138             // wxControl still gets it)
 139             return MSWDefWindowProc(nMsg, wParam, lParam);
 140     }
 141
 142     return wxControl::MSWWindowProc(nMsg, wParam, lParam);
 143 }
 144
 145 #endif // wxUSE_STATBOX