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 "wx/msw/private.h"
  44
  45 // ---------------------------------------------------------------------------
  46 // convenience macro
  47 // ---------------------------------------------------------------------------
  48
  49 #define GetHMenuOf(menu)    ((HMENU)menu->GetHMenu())
  50
  51 // ============================================================================
  52 // implementation
  53 // ============================================================================
  54
  55 // ----------------------------------------------------------------------------
  56 // dynamic classes implementation
  57 // ----------------------------------------------------------------------------
  58
  59 #if     !defined(USE_SHARED_LIBRARY) || !USE_SHARED_LIBRARY
  60 #if wxUSE_OWNER_DRAWN
  61   IMPLEMENT_DYNAMIC_CLASS2(wxMenuItem, wxObject, wxOwnerDrawn)
  62 #else   //!USE_OWNER_DRAWN
  63   IMPLEMENT_DYNAMIC_CLASS(wxMenuItem, wxObject)
  64 #endif  //USE_OWNER_DRAWN
  65
  66 #endif  //USE_SHARED_LIBRARY
  67
  68 // ----------------------------------------------------------------------------
  69 // wxMenuItem
  70 // ----------------------------------------------------------------------------
  71
  72 // ctor & dtor
  73 // -----------
  74
  75 wxMenuItem::wxMenuItem(wxMenu *pParentMenu, int id,
  76                        const wxString& strName, const wxString& strHelp,
  77                        bool bCheckable,
  78                        wxMenu *pSubMenu) :
  79 #if wxUSE_OWNER_DRAWN
  80                         wxOwnerDrawn(strName, bCheckable),
  81 #else   //no owner drawn support
  82                         m_bCheckable(bCheckable),
  83                         m_strName(strName),
  84 #endif  //owner drawn
  85                         m_strHelp(strHelp)
  86 {
  87     wxASSERT_MSG( pParentMenu != NULL, "a menu item should have a parent" );
  88
  89 #if  wxUSE_OWNER_DRAWN
  90     // set default menu colors
  91     #define SYS_COLOR(c) (wxSystemSettings::GetSystemColour(wxSYS_COLOUR_##c))
  92
  93     SetTextColour(SYS_COLOR(MENUTEXT));
  94     SetBackgroundColour(SYS_COLOR(MENU));
  95
  96     // we don't want normal items be owner-drawn
  97     ResetOwnerDrawn();
  98
  99     #undef  SYS_COLOR
 100 #endif
 101
 102     m_pParentMenu = pParentMenu;
 103     m_pSubMenu    = pSubMenu;
 104     m_bEnabled    = TRUE;
 105     m_idItem      = id;
 106 }
 107
 108 wxMenuItem::~wxMenuItem()
 109 {
 110 }
 111
 112 // misc
 113 // ----
 114
 115 // return the id for calling Win32 API functions
 116 int wxMenuItem::GetRealId() const
 117 {
 118     return m_pSubMenu ? (int)m_pSubMenu->GetHMenu() : GetId();
 119 }
 120
 121 // delete the sub menu
 122 // -------------------
 123 void wxMenuItem::DeleteSubMenu()
 124 {
 125     delete m_pSubMenu;
 126     m_pSubMenu = NULL;
 127 }
 128
 129 // change item state
 130 // -----------------
 131
 132 void wxMenuItem::Enable(bool bDoEnable)
 133 {
 134     if ( m_bEnabled != bDoEnable ) {
 135         long rc = EnableMenuItem(GetHMenuOf(m_pParentMenu),
 136                                  GetRealId(),
 137                                  MF_BYCOMMAND |
 138                                  (bDoEnable ? MF_ENABLED : MF_GRAYED));
 139
 140         if ( rc == -1 ) {
 141             wxLogLastError("EnableMenuItem");
 142         }
 143
 144         m_bEnabled = bDoEnable;
 145     }
 146 }
 147
 148 void wxMenuItem::Check(bool bDoCheck)
 149 {
 150     wxCHECK_RET( IsCheckable(), "only checkable items may be checked" );
 151
 152     if ( m_bChecked != bDoCheck ) {
 153         long rc = CheckMenuItem(GetHMenuOf(m_pParentMenu),
 154                                 GetId(),
 155                                 MF_BYCOMMAND |
 156                                 (bDoCheck ? MF_CHECKED : MF_UNCHECKED));
 157
 158         if ( rc == -1 ) {
 159             wxLogLastError("CheckMenuItem");
 160         }
 161
 162         m_bChecked = bDoCheck;
 163     }
 164 }
 165
 166 void wxMenuItem::SetName(const wxString& strName)
 167 {
 168     // don't do anything if label didn't change
 169     if ( m_strName == strName )
 170         return;
 171
 172     m_strName = strName;
 173
 174     HMENU hMenu = GetHMenuOf(m_pParentMenu);
 175
 176     UINT id = GetRealId();
 177     UINT flagsOld = ::GetMenuState(hMenu, id, MF_BYCOMMAND);
 178     if ( flagsOld == 0xFFFFFFFF )
 179     {
 180         wxLogLastError("GetMenuState");
 181     }
 182     else
 183     {
 184         if ( IsSubMenu() )
 185         {
 186             // high byte contains the number of items in a submenu for submenus
 187             flagsOld &= 0xFF;
 188             flagsOld |= MF_POPUP;
 189         }
 190
 191         LPCSTR data;
 192 #if wxUSE_OWNER_DRAWN
 193         if ( IsOwnerDrawn() )
 194         {
 195             flagsOld |= MF_OWNERDRAW;
 196             data = (LPCSTR)this;
 197         }
 198         else
 199 #endif  //owner drawn
 200         {
 201             flagsOld |= MF_STRING;
 202             data = strName;
 203         }
 204
 205         if ( ::ModifyMenu(hMenu, id,
 206                           MF_BYCOMMAND | flagsOld,
 207                           id, data) == 0xFFFFFFFF )
 208         {
 209             wxLogLastError("ModifyMenu");
 210         }
 211     }
 212 }
 213