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