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 // ============================================================================
  49 // implementation
  50 // ============================================================================
  51
  52 // ----------------------------------------------------------------------------
  53 // wxStaticBox
  54 // ----------------------------------------------------------------------------
  55
  56 bool wxStaticBox::Create(wxWindow *parent,
  57                          wxWindowID id,
  58                          const wxString& label,
  59                          const wxPoint& pos,
  60                          const wxSize& size,
  61                          long style,
  62                          const wxString& name)
  63 {
  64     if ( !CreateControl(parent, id, pos, size, style, wxDefaultValidator, name) )
  65         return FALSE;
  66
  67     // as wxStaticBox doesn't draw its own background, we make it transparent
  68     // to force redrawing its background which could have been overwritten by
  69     // the other controls inside it
  70     //
  71     // FIXME: I still think that it isn't the right solution because the static
  72     //        boxes shouldn't have to be transparent if the redrawing was done
  73     //        right elsewhere - who ever had to make them transparent in non
  74     //        wxWindows programs, after all? But for now it does fix a serious
  75     //        problem (try resizing the sizers test screen in the layout sample
  76     //        after removing WS_EX_TRANSPARENT bit) and so let's use it until
  77     //        we fix the real underlying problem
  78     if ( !MSWCreateControl(wxT("BUTTON"), BS_GROUPBOX, pos, size, label,
  79                            WS_EX_TRANSPARENT) )
  80         return FALSE;
  81
  82     // to be transparent we should have the same colour as the parent as well
  83     SetBackgroundColour(GetParent()->GetBackgroundColour());
  84
  85     return TRUE;
  86 }
  87
  88 wxSize wxStaticBox::DoGetBestSize() const
  89 {
  90     int cx, cy;
  91     wxGetCharSize(GetHWND(), &cx, &cy, &GetFont());
  92
  93     int wBox;
  94     GetTextExtent(wxGetWindowText(m_hWnd), &wBox, &cy);
  95
  96     wBox += 3*cx;
  97     int hBox = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy);
  98
  99     return wxSize(wBox, hBox);
 100 }
 101
 102 long wxStaticBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
 103 {
 104     switch ( nMsg )
 105     {
 106         case WM_NCHITTEST:
 107             // FIXME: this hack is specific to dialog ed, shouldn't it be
 108             //        somehow disabled during normal operation?
 109             {
 110                 int xPos = LOWORD(lParam);  // horizontal position of cursor
 111                 int yPos = HIWORD(lParam);  // vertical position of cursor
 112
 113                 ScreenToClient(&xPos, &yPos);
 114
 115                 // Make sure you can drag by the top of the groupbox, but let
 116                 // other (enclosed) controls get mouse events also
 117                 if ( yPos < 10 )
 118                     return (long)HTCLIENT;
 119             }
 120             break;
 121
 122         case WM_ERASEBKGND:
 123             // prevent wxControl from processing this message because it will
 124             // erase the background incorrectly and there is no way for us to
 125             // override this at wxWin event level (if we do process the event,
 126             // we don't know how to do it properly - paint the background
 127             // without painting over other controls - and if we don't,
 128             // wxControl still gets it)
 129             return MSWDefWindowProc(nMsg, wParam, lParam);
 130     }
 131
 132     return wxControl::MSWWindowProc(nMsg, wParam, lParam);
 133 }
 134
 135 #endif // wxUSE_STATBOX