src/msw/menuitem.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        menuitem.cpp
   3 // Purpose:     wxMenuItem implementation
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     11.11.97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "menuitem.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 #ifndef WX_PRECOMP
  32     #include "wx/menu.h"
  33     #include "wx/font.h"
  34     #include "wx/bitmap.h"
  35     #include "wx/settings.h"
  36     #include "wx/font.h"
  37 #endif
  38
  39 #include "wx/ownerdrw.h"
  40 #include "wx/menuitem.h"
  41 #include "wx/log.h"
  42
  43 #include <windows.h>
  44
  45 #ifdef GetClassInfo
  46     #undef GetClassInfo
  47 #endif
  48
  49 #ifdef GetClassName
  50     #undef GetClassName
  51 #endif
  52
  53 // ---------------------------------------------------------------------------
  54 // convenience macro
  55 // ---------------------------------------------------------------------------
  56
  57 #define GetHMenuOf(menu)    ((HMENU)menu->GetHMenu())
  58
  59 // ============================================================================
  60 // implementation
  61 // ============================================================================
  62
  63 // ----------------------------------------------------------------------------
  64 // dynamic classes implementation
  65 // ----------------------------------------------------------------------------
  66
  67 #if     !defined(USE_SHARED_LIBRARY) || !USE_SHARED_LIBRARY
  68 #if wxUSE_OWNER_DRAWN
  69   IMPLEMENT_DYNAMIC_CLASS2(wxMenuItem, wxObject, wxOwnerDrawn)
  70 #else   //!USE_OWNER_DRAWN
  71   IMPLEMENT_DYNAMIC_CLASS(wxMenuItem, wxObject)
  72 #endif  //USE_OWNER_DRAWN
  73
  74 #endif  //USE_SHARED_LIBRARY
  75
  76 // ----------------------------------------------------------------------------
  77 // wxMenuItem
  78 // ----------------------------------------------------------------------------
  79
  80 // ctor & dtor
  81 // -----------
  82
  83 wxMenuItem::wxMenuItem(wxMenu *pParentMenu, int id,
  84                        const wxString& strName, const wxString& strHelp,
  85                        bool bCheckable,
  86                        wxMenu *pSubMenu) :
  87 #if wxUSE_OWNER_DRAWN
  88                         wxOwnerDrawn(strName, bCheckable),
  89 #else   //no owner drawn support
  90                         m_bCheckable(bCheckable),
  91                         m_strName(strName),
  92 #endif  //owner drawn
  93                         m_strHelp(strHelp)
  94 {
  95     wxASSERT_MSG( pParentMenu != NULL, "a menu item should have a parent" );
  96
  97 #if  wxUSE_OWNER_DRAWN
  98     // set default menu colors
  99     #define SYS_COLOR(c) (wxSystemSettings::GetSystemColour(wxSYS_COLOUR_##c))
 100
 101     SetTextColour(SYS_COLOR(MENUTEXT));
 102     SetBackgroundColour(SYS_COLOR(MENU));
 103
 104     // we don't want normal items be owner-drawn
 105     ResetOwnerDrawn();
 106
 107     #undef  SYS_COLOR
 108 #endif
 109
 110     m_pParentMenu = pParentMenu;
 111     m_pSubMenu    = pSubMenu;
 112     m_bEnabled    = TRUE;
 113     m_idItem      = id;
 114 }
 115
 116 wxMenuItem::~wxMenuItem()
 117 {
 118 }
 119
 120 // misc
 121 // ----
 122
 123 // return the id for calling Win32 API functions
 124 int wxMenuItem::GetRealId() const
 125 {
 126     return m_pSubMenu ? (int)m_pSubMenu->GetHMenu() : GetId();
 127 }
 128
 129 // delete the sub menu
 130 // -------------------
 131 void wxMenuItem::DeleteSubMenu()
 132 {
 133     delete m_pSubMenu;
 134     m_pSubMenu = NULL;
 135 }
 136
 137 // change item state
 138 // -----------------
 139
 140 void wxMenuItem::Enable(bool bDoEnable)
 141 {
 142     if ( m_bEnabled != bDoEnable ) {
 143         long rc = EnableMenuItem(GetHMenuOf(m_pParentMenu),
 144                                  GetRealId(),
 145                                  MF_BYCOMMAND |
 146                                  (bDoEnable ? MF_ENABLED : MF_GRAYED));
 147
 148         if ( rc == -1 ) {
 149             wxLogLastError("EnableMenuItem");
 150         }
 151
 152         m_bEnabled = bDoEnable;
 153     }
 154 }
 155
 156 void wxMenuItem::Check(bool bDoCheck)
 157 {
 158     wxCHECK_RET( IsCheckable(), "only checkable items may be checked" );
 159
 160     if ( m_bChecked != bDoCheck ) {
 161         long rc = CheckMenuItem(GetHMenuOf(m_pParentMenu),
 162                                 GetId(),
 163                                 MF_BYCOMMAND |
 164                                 (bDoCheck ? MF_CHECKED : MF_UNCHECKED));
 165
 166         if ( rc == -1 ) {
 167             wxLogLastError("CheckMenuItem");
 168         }
 169
 170         m_bChecked = bDoCheck;
 171     }
 172 }
 173
 174 void wxMenuItem::SetName(const wxString& strName)
 175 {
 176     // don't do anything if label didn't change
 177     if ( m_strName == strName )
 178         return;
 179
 180     m_strName = strName;
 181
 182     HMENU hMenu = GetHMenuOf(m_pParentMenu);
 183
 184     UINT id = GetRealId();
 185     UINT flagsOld = ::GetMenuState(hMenu, id, MF_BYCOMMAND);
 186     if ( flagsOld == 0xFFFFFFFF )
 187     {
 188         wxLogLastError("GetMenuState");
 189     }
 190     else
 191     {
 192         if ( IsSubMenu() )
 193         {
 194             // high byte contains the number of items in a submenu for submenus
 195             flagsOld &= 0xFF;
 196             flagsOld |= MF_POPUP;
 197         }
 198
 199         LPCSTR data;
 200 #if wxUSE_OWNER_DRAWN
 201         if ( IsOwnerDrawn() )
 202         {
 203             flagsOld |= MF_OWNERDRAW;
 204             data = (LPCSTR)this;
 205         }
 206         else
 207 #endif  //owner drawn
 208         {
 209             flagsOld |= MF_STRING;
 210             data = strName;
 211         }
 212
 213         if ( ::ModifyMenu(hMenu, id,
 214                           MF_BYCOMMAND | flagsOld,
 215                           id, data) == 0xFFFFFFFF )
 216         {
 217             wxLogLastError("ModifyMenu");
 218         }
 219     }
 220 }
 221