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 // wxCheckBox
  54 // ----------------------------------------------------------------------------
  55
  56 bool wxCheckBox::MSWCommand(WXUINT WXUNUSED(param), WXWORD WXUNUSED(id))
  57 {
  58     wxCommandEvent event(wxEVT_COMMAND_CHECKBOX_CLICKED, m_windowId);
  59     event.SetInt(GetValue());
  60     event.SetEventObject(this);
  61     ProcessCommand(event);
  62     return TRUE;
  63 }
  64
  65 bool wxCheckBox::Create(wxWindow *parent,
  66                         wxWindowID id,
  67                         const wxString& label,
  68                         const wxPoint& pos,
  69                         const wxSize& size, long style,
  70                         const wxValidator& validator,
  71                         const wxString& name)
  72 {
  73     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
  74         return FALSE;
  75
  76     long msStyle = BS_AUTOCHECKBOX | WS_TABSTOP;
  77     if ( style & wxALIGN_RIGHT )
  78         msStyle |= BS_LEFTTEXT;
  79
  80     return MSWCreateControl(wxT("BUTTON"), msStyle, pos, size, label, 0);
  81 }
  82
  83 void wxCheckBox::SetLabel(const wxString& label)
  84 {
  85     SetWindowText(GetHwnd(), label);
  86 }
  87
  88 wxSize wxCheckBox::DoGetBestSize() const
  89 {
  90     static int s_checkSize = 0;
  91
  92     if ( !s_checkSize )
  93     {
  94         wxScreenDC dc;
  95         dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
  96
  97         s_checkSize = dc.GetCharHeight();
  98     }
  99
 100     wxString str = wxGetWindowText(GetHWND());
 101
 102     int wCheckbox, hCheckbox;
 103     if ( !str.IsEmpty() )
 104     {
 105         GetTextExtent(str, &wCheckbox, &hCheckbox);
 106         wCheckbox += s_checkSize + GetCharWidth();
 107
 108         if ( hCheckbox < s_checkSize )
 109             hCheckbox = s_checkSize;
 110     }
 111     else
 112     {
 113         wCheckbox = s_checkSize;
 114         hCheckbox = s_checkSize;
 115     }
 116
 117     return wxSize(wCheckbox, hCheckbox);
 118 }
 119
 120 void wxCheckBox::SetValue(bool val)
 121 {
 122     SendMessage(GetHwnd(), BM_SETCHECK, val, 0);
 123 }
 124
 125 bool wxCheckBox::GetValue() const
 126 {
 127     return (SendMessage(GetHwnd(), BM_GETCHECK, 0, 0) & BST_CHECKED) != 0;
 128 }
 129
 130 void wxCheckBox::Command(wxCommandEvent& event)
 131 {
 132     SetValue(event.GetInt() != 0);
 133     ProcessCommand(event);
 134 }
 135
 136 #endif // wxUSE_CHECKBOX