+// ----------------------------------------------------------------------------
+// private helper classes
+// ----------------------------------------------------------------------------
+
+// We have to handle both fooW and fooA notifications in several cases
+// because of broken comctl32.dll and/or unicows.dll. This class is used to
+// convert LV_ITEMA and LV_ITEMW to LV_ITEM (which is either LV_ITEMA or
+// LV_ITEMW depending on wxUSE_UNICODE setting), so that it can be processed
+// by wxConvertToMSWListItem().
+#if wxUSE_UNICODE
+ #define LV_ITEM_NATIVE LV_ITEMW
+ #define LV_ITEM_OTHER LV_ITEMA
+
+ #define LV_CONV_TO_WX cMB2WX
+ #define LV_CONV_BUF wxMB2WXbuf
+#else // ANSI
+ #define LV_ITEM_NATIVE LV_ITEMA
+ #define LV_ITEM_OTHER LV_ITEMW
+
+ #define LV_CONV_TO_WX cWC2WX
+ #define LV_CONV_BUF wxWC2WXbuf
+#endif // Unicode/ANSI
+
+class wxLV_ITEM
+{
+public:
+ // default ctor, use Init() later
+ wxLV_ITEM() { m_buf = NULL; m_pItem = NULL; }
+
+ // init without conversion
+ void Init(LV_ITEM_NATIVE& item)
+ {
+ wxASSERT_MSG( !m_pItem, _T("Init() called twice?") );
+
+ m_pItem = &item;
+ }
+
+ // init with conversion
+ void Init(LV_ITEM_OTHER& item)
+ {
+ // avoid unnecessary dynamic memory allocation, jjust make m_pItem
+ // point to our own m_item
+
+ // memcpy() can't work if the struct sizes are different
+ wxCOMPILE_TIME_ASSERT( sizeof(LV_ITEM_OTHER) == sizeof(LV_ITEM_NATIVE),
+ CodeCantWorkIfDiffSizes);
+
+ memcpy(&m_item, &item, sizeof(LV_ITEM_NATIVE));
+
+ // convert text from ANSI to Unicod if necessary
+ if ( (item.mask & LVIF_TEXT) && item.pszText )
+ {
+ m_buf = new LV_CONV_BUF(wxConvLocal.LV_CONV_TO_WX(item.pszText));
+ m_item.pszText = (wxChar *)m_buf->data();
+ }
+ }
+
+ // ctor without conversion
+ wxLV_ITEM(LV_ITEM_NATIVE& item) : m_buf(NULL), m_pItem(&item) { }
+
+ // ctor with conversion
+ wxLV_ITEM(LV_ITEM_OTHER& item) : m_buf(NULL)
+ {
+ Init(item);
+ }
+
+ ~wxLV_ITEM() { delete m_buf; }
+
+ // conversion to the real LV_ITEM
+ operator LV_ITEM_NATIVE&() const { return *m_pItem; }
+
+private:
+ LV_CONV_BUF *m_buf;
+
+ LV_ITEM_NATIVE *m_pItem;
+ LV_ITEM_NATIVE m_item;
+
+ DECLARE_NO_COPY_CLASS(wxLV_ITEM)
+};
+
+///////////////////////////////////////////////////////
+// Problem:
+// The MSW version had problems with SetTextColour() et
+// al as the wxListItemAttr's were stored keyed on the
+// item index. If a item was inserted anywhere but the end
+// of the list the the text attributes (colour etc) for
+// the following items were out of sync.
+//
+// Solution:
+// Under MSW the only way to associate data with a List
+// item independant of its position in the list is to
+// store a pointer to it in its lParam attribute. However
+// user programs are already using this (via the
+// SetItemData() GetItemData() calls).
+//
+// However what we can do is store a pointer to a
+// structure which contains the attributes we want *and*
+// a lParam for the users data, e.g.
+//
+// class wxListItemInternalData
+// {
+// public:
+// wxListItemAttr *attr;
+// long lParam; // user data
+// };
+//
+// To conserve memory, a wxListItemInternalData is
+// only allocated for a LV_ITEM if text attributes or
+// user data(lparam) are being set.
+
+
+// class wxListItemInternalData
+class wxListItemInternalData
+{
+public:
+ wxListItemAttr *attr;
+ LPARAM lParam; // user data
+
+ wxListItemInternalData() : attr(NULL), lParam(0) {}
+ ~wxListItemInternalData()
+ {
+ if (attr)
+ delete attr;
+ };
+
+ DECLARE_NO_COPY_CLASS(wxListItemInternalData)
+};
+
+// Get the internal data structure
+static wxListItemInternalData *wxGetInternalData(HWND hwnd, long itemId);
+static wxListItemInternalData *wxGetInternalData(const wxListCtrl *ctl, long itemId);
+static wxListItemAttr *wxGetInternalDataAttr(wxListCtrl *ctl, long itemId);
+static void wxDeleteInternalData(wxListCtrl* ctl, long itemId);
+
+
projects / wxWidgets.git / blobdiff