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