src/msw/checkbox.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/checkbox.cpp
   3 // Purpose:     wxCheckBox
   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 "checkbox.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_CHECKBOX
  32
  33 #ifndef WX_PRECOMP
  34     #include "wx/checkbox.h"
  35     #include "wx/brush.h"
  36     #include "wx/dcscreen.h"
  37     #include "wx/settings.h"
  38 #endif
  39
  40 #include "wx/msw/private.h"
  41
  42 #ifndef BST_CHECKED
  43     #define BST_CHECKED 0x0001
  44 #endif
  45
  46 // ============================================================================
  47 // implementation
  48 // ============================================================================
  49
  50 IMPLEMENT_DYNAMIC_CLASS(wxCheckBox, wxControl)
  51
  52 /*
  53 TODO PROPERTIES :
  54
  55 bool "checked" , 0
  56 */
  57
  58 // ----------------------------------------------------------------------------
  59 // wxCheckBox
  60 // ----------------------------------------------------------------------------
  61
  62 bool wxCheckBox::MSWCommand(WXUINT WXUNUSED(param), WXWORD WXUNUSED(id))
  63 {
  64     wxCommandEvent event(wxEVT_COMMAND_CHECKBOX_CLICKED, m_windowId);
  65     event.SetInt(GetValue());
  66     event.SetEventObject(this);
  67     ProcessCommand(event);
  68     return TRUE;
  69 }
  70
  71 bool wxCheckBox::Create(wxWindow *parent,
  72                         wxWindowID id,
  73                         const wxString& label,
  74                         const wxPoint& pos,
  75                         const wxSize& size, long style,
  76                         const wxValidator& validator,
  77                         const wxString& name)
  78 {
  79     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
  80         return FALSE;
  81
  82     long msStyle = BS_AUTOCHECKBOX | WS_TABSTOP;
  83     if ( style & wxALIGN_RIGHT )
  84         msStyle |= BS_LEFTTEXT;
  85
  86     return MSWCreateControl(wxT("BUTTON"), msStyle, pos, size, label, 0);
  87 }
  88
  89 void wxCheckBox::SetLabel(const wxString& label)
  90 {
  91     SetWindowText(GetHwnd(), label);
  92 }
  93
  94 wxSize wxCheckBox::DoGetBestSize() const
  95 {
  96     static int s_checkSize = 0;
  97
  98     if ( !s_checkSize )
  99     {
 100         wxScreenDC dc;
 101         dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
 102
 103         s_checkSize = dc.GetCharHeight();
 104     }
 105
 106     wxString str = wxGetWindowText(GetHWND());
 107
 108     int wCheckbox, hCheckbox;
 109     if ( !str.IsEmpty() )
 110     {
 111         GetTextExtent(str, &wCheckbox, &hCheckbox);
 112         wCheckbox += s_checkSize + GetCharWidth();
 113
 114         if ( hCheckbox < s_checkSize )
 115             hCheckbox = s_checkSize;
 116     }
 117     else
 118     {
 119         wCheckbox = s_checkSize;
 120         hCheckbox = s_checkSize;
 121     }
 122
 123     return wxSize(wCheckbox, hCheckbox);
 124 }
 125
 126 void wxCheckBox::SetValue(bool val)
 127 {
 128     SendMessage(GetHwnd(), BM_SETCHECK, val, 0);
 129 }
 130
 131 bool wxCheckBox::GetValue() const
 132 {
 133     return (SendMessage(GetHwnd(), BM_GETCHECK, 0, 0) & BST_CHECKED) != 0;
 134 }
 135
 136 void wxCheckBox::Command(wxCommandEvent& event)
 137 {
 138     SetValue(event.GetInt() != 0);
 139     ProcessCommand(event);
 140 }
 141
 142 #endif // wxUSE_CHECKBOX