src/msw/tglbtn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/tglbtn.cpp
   3 // Purpose:     Definition of the wxToggleButton class, which implements a
   4 //              toggle button under wxMSW.
   5 // Author:      John Norris, minor changes by Axel Schlueter
   6 //              and William Gallafent.
   7 // Modified by:
   8 // Created:     08.02.01
   9 // RCS-ID:      $Id$
  10 // Copyright:   (c) 2000 Johnny C. Norris II
  11 // License:     wxWindows licence
  12 /////////////////////////////////////////////////////////////////////////////
  13
  14 // ============================================================================
  15 // declarations
  16 // ============================================================================
  17
  18 // ----------------------------------------------------------------------------
  19 // headers
  20 // ----------------------------------------------------------------------------
  21
  22 #include "wx/wxprec.h"
  23
  24 #ifdef __BORLANDC__
  25     #pragma hdrstop
  26 #endif
  27
  28 #if wxUSE_TOGGLEBTN
  29
  30 #include "wx/tglbtn.h"
  31
  32 #ifndef WX_PRECOMP
  33     #include "wx/button.h"
  34     #include "wx/brush.h"
  35     #include "wx/dcscreen.h"
  36     #include "wx/settings.h"
  37
  38     #include "wx/log.h"
  39 #endif // WX_PRECOMP
  40
  41 #include "wx/msw/private.h"
  42 #include "wx/msw/private/button.h"
  43
  44 // ----------------------------------------------------------------------------
  45 // macros
  46 // ----------------------------------------------------------------------------
  47
  48 IMPLEMENT_DYNAMIC_CLASS(wxToggleButton, wxControl)
  49 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOGGLEBUTTON_CLICKED)
  50
  51 // ============================================================================
  52 // implementation
  53 // ============================================================================
  54
  55 // ----------------------------------------------------------------------------
  56 // wxToggleButton
  57 // ----------------------------------------------------------------------------
  58
  59 // Single check box item
  60 bool wxToggleButton::Create(wxWindow *parent,
  61                             wxWindowID id,
  62                             const wxString& label,
  63                             const wxPoint& pos,
  64                             const wxSize& size, long style,
  65                             const wxValidator& validator,
  66                             const wxString& name)
  67 {
  68     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
  69         return false;
  70
  71     // if the label contains several lines we must explicitly tell the button
  72     // about it or it wouldn't draw it correctly ("\n"s would just appear as
  73     // black boxes)
  74     //
  75     // NB: we do it here and not in MSWGetStyle() because we need the label
  76     //     value and the label is not set yet when MSWGetStyle() is called
  77     WXDWORD exstyle;
  78     WXDWORD msStyle = MSWGetStyle(style, &exstyle);
  79     msStyle |= wxMSWButton::GetMultilineStyle(label);
  80
  81     return MSWCreateControl(_T("BUTTON"), msStyle, pos, size, label, exstyle);
  82 }
  83
  84 WXDWORD wxToggleButton::MSWGetStyle(long style, WXDWORD *exstyle) const
  85 {
  86     WXDWORD msStyle = wxControl::MSWGetStyle(style, exstyle);
  87
  88     msStyle |= BS_AUTOCHECKBOX | BS_PUSHLIKE | WS_TABSTOP;
  89
  90     if ( style & wxBU_LEFT )
  91       msStyle |= BS_LEFT;
  92     if ( style & wxBU_RIGHT )
  93       msStyle |= BS_RIGHT;
  94     if ( style & wxBU_TOP )
  95       msStyle |= BS_TOP;
  96     if ( style & wxBU_BOTTOM )
  97       msStyle |= BS_BOTTOM;
  98
  99     return msStyle;
 100 }
 101
 102 wxSize wxToggleButton::DoGetBestSize() const
 103 {
 104     return wxMSWButton::ComputeBestSize(const_cast<wxToggleButton *>(this));
 105 }
 106
 107 void wxToggleButton::SetLabel(const wxString& label)
 108 {
 109     wxMSWButton::UpdateMultilineStyle(GetHwnd(), label);
 110
 111     wxToggleButtonBase::SetLabel(label);
 112 }
 113
 114 void wxToggleButton::SetValue(bool val)
 115 {
 116    ::SendMessage(GetHwnd(), BM_SETCHECK, val, 0);
 117 }
 118
 119 bool wxToggleButton::GetValue() const
 120 {
 121     return ::SendMessage(GetHwnd(), BM_GETCHECK, 0, 0) == BST_CHECKED;
 122 }
 123
 124 void wxToggleButton::Command(wxCommandEvent& event)
 125 {
 126     SetValue(event.GetInt() != 0);
 127     ProcessCommand(event);
 128 }
 129
 130 bool wxToggleButton::MSWCommand(WXUINT WXUNUSED(param), WXWORD WXUNUSED(id))
 131 {
 132     wxCommandEvent event(wxEVT_COMMAND_TOGGLEBUTTON_CLICKED, m_windowId);
 133     event.SetInt(GetValue());
 134     event.SetEventObject(this);
 135     ProcessCommand(event);
 136     return true;
 137 }
 138
 139 #endif // wxUSE_TOGGLEBTN