return (HTREEITEM)TreeView_HitTest(hwndTV, &tvht);
}
+// wrappers for TreeView_GetItem/TreeView_SetItem
+static bool IsItemSelected(HWND hwndTV, HTREEITEM hItem)
+{
+
+ TV_ITEM tvi;
+ tvi.mask = TVIF_STATE | TVIF_HANDLE;
+ tvi.stateMask = TVIS_SELECTED;
+ tvi.hItem = hItem;
+
+ if ( !TreeView_GetItem(hwndTV, &tvi) )
+ {
+ wxLogLastError(wxT("TreeView_GetItem"));
+ }
+
+ return (tvi.state & TVIS_SELECTED) != 0;
+}
+
+static bool SelectItem(HWND hwndTV, HTREEITEM hItem, bool select = true)
+{
+ TV_ITEM tvi;
+ tvi.mask = TVIF_STATE | TVIF_HANDLE;
+ tvi.stateMask = TVIS_SELECTED;
+ tvi.state = select ? TVIS_SELECTED : 0;
+ tvi.hItem = hItem;
+
+ if ( TreeView_SetItem(hwndTV, &tvi) == -1 )
+ {
+ wxLogLastError(wxT("TreeView_SetItem"));
+ return false;
+ }
+
+ return true;
+}
+
+static inline void UnselectItem(HWND hwndTV, HTREEITEM htItem)
+{
+ SelectItem(hwndTV, htItem, false);
+}
+
+static inline void ToggleItemSelection(HWND hwndTV, HTREEITEM htItem)
+{
+ SelectItem(hwndTV, htItem, !IsItemSelected(hwndTV, htItem));
+}
+
+// helper function which selects all items in a range and, optionally,
+// unselects all others
+static void SelectRange(HWND hwndTV,
+ HTREEITEM htFirst,
+ HTREEITEM htLast,
+ bool unselectOthers = true)
+{
+ // find the first (or last) item and select it
+ bool cont = true;
+ HTREEITEM htItem = (HTREEITEM)TreeView_GetRoot(hwndTV);
+ while ( htItem && cont )
+ {
+ if ( (htItem == htFirst) || (htItem == htLast) )
+ {
+ if ( !IsItemSelected(hwndTV, htItem) )
+ {
+ SelectItem(hwndTV, htItem);
+ }
+
+ cont = false;
+ }
+ else
+ {
+ if ( unselectOthers && IsItemSelected(hwndTV, htItem) )
+ {
+ UnselectItem(hwndTV, htItem);
+ }
+ }
+
+ htItem = (HTREEITEM)TreeView_GetNextVisible(hwndTV, htItem);
+ }
+
+ // select the items in range
+ cont = htFirst != htLast;
+ while ( htItem && cont )
+ {
+ if ( !IsItemSelected(hwndTV, htItem) )
+ {
+ SelectItem(hwndTV, htItem);
+ }
+
+ cont = (htItem != htFirst) && (htItem != htLast);
+
+ htItem = (HTREEITEM)TreeView_GetNextVisible(hwndTV, htItem);
+ }
+
+ // unselect the rest
+ if ( unselectOthers )
+ {
+ while ( htItem )
+ {
+ if ( IsItemSelected(hwndTV, htItem) )
+ {
+ UnselectItem(hwndTV, htItem);
+ }
+
+ htItem = (HTREEITEM)TreeView_GetNextVisible(hwndTV, htItem);
+ }
+ }
+
+ // seems to be necessary - otherwise the just selected items don't always
+ // appear as selected
+ UpdateWindow(hwndTV);
+}
+
+// helper function which tricks the standard control into changing the focused
+// item without changing anything else (if someone knows why Microsoft doesn't
+// allow to do it by just setting TVIS_FOCUSED flag, please tell me!)
+static void SetFocus(HWND hwndTV, HTREEITEM htItem)
+{
+ // the current focus
+ HTREEITEM htFocus = (HTREEITEM)TreeView_GetSelection(hwndTV);
+
+ if ( htItem )
+ {
+ // set the focus
+ if ( htItem != htFocus )
+ {
+ // remember the selection state of the item
+ bool wasSelected = IsItemSelected(hwndTV, htItem);
+
+ if ( htFocus && IsItemSelected(hwndTV, htFocus) )
+ {
+ // prevent the tree from unselecting the old focus which it
+ // would do by default (TreeView_SelectItem unselects the
+ // focused item)
+ TreeView_SelectItem(hwndTV, 0);
+ SelectItem(hwndTV, htFocus);
+ }
+
+ TreeView_SelectItem(hwndTV, htItem);
+
+ if ( !wasSelected )
+ {
+ // need to clear the selection which TreeView_SelectItem() gave
+ // us
+ UnselectItem(hwndTV, htItem);
+ }
+ //else: was selected, still selected - ok
+ }
+ //else: nothing to do, focus already there
+ }
+ else
+ {
+ if ( htFocus )
+ {
+ bool wasFocusSelected = IsItemSelected(hwndTV, htFocus);
+
+ // just clear the focus
+ TreeView_SelectItem(hwndTV, 0);
+
+ if ( wasFocusSelected )
+ {
+ // restore the selection state
+ SelectItem(hwndTV, htFocus);
+ }
+ }
+ //else: nothing to do, no focus already
+ }
+}
+
// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------
if ( !CreateControl(parent, id, pos, size, style, validator, name) )
return false;
- DWORD exStyle = 0;
+ WXDWORD exStyle = 0;
DWORD wstyle = MSWGetStyle(m_windowStyle, & exStyle);
wstyle |= WS_TABSTOP | TVS_SHOWSELALWAYS;
m_htSelStart.Unset();
}
- else // single selection
+ else
{
// just remove the selection
Unselect();
{
::SelectItem(GetHwnd(), HITEM(item), select);
}
- else // single selection
+ else
{
wxASSERT_MSG( select,
_T("SelectItem(false) works only for multiselect") );
switch ( nMsg )
{
- case WM_RBUTTONDOWN:
- // if the item we are about to right click on is not already
- // selected or if we click outside of any item, remove the
- // entire previous selection
- if ( !htItem || !::IsItemSelected(GetHwnd(), htItem) )
- {
- UnselectAll();
- }
-
- // select item and set the focus to the
- // newly selected item
- ::SelectItem(GetHwnd(), htItem);
- ::SetFocus(GetHwnd(), htItem);
- break;
-
case WM_LBUTTONDOWN:
if ( htItem && isMultiple && (tvht.flags & TVHT_ONITEM) != 0 )
{
WXLRESULT
wxTreeCtrl::MSWDefWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
{
- // default WM_RBUTTONDOWN handler enters modal loop inside DefWindowProc()
- // waiting for WM_RBUTTONUP and then sends the resulting WM_CONTEXTMENU to
- // the parent window, not us, which completely breaks everything so simply
- // don't let it see this message at all
- if ( nMsg == WM_RBUTTONDOWN )
- return 0;
-
- // but because of the above we don't get NM_RCLICK which is normally
- // generated by tree window proc when the modal loop mentioned above ends
- // because the mouse is released -- synthesize it ourselves instead
- if ( nMsg == WM_RBUTTONUP )
- {
- NMHDR hdr;
- hdr.hwndFrom = GetHwnd();
- hdr.idFrom = GetId();
- hdr.code = NM_RCLICK;
-
- WXLPARAM rc;
- MSWOnNotify(GetId(), (LPARAM)&hdr, &rc);
-
- // continue as usual
- }
-
if ( nMsg == WM_CHAR )
{
- // also don't let the control process Space and Return keys because it
+ // don't let the control process Space and Return keys because it
// doesn't do anything useful with them anyhow but always beeps
// annoyingly when it receives them and there is no way to turn it off
// simply if you just process TREEITEM_ACTIVATED event to which Space
break;
}
-#endif
-#endif
+#endif // TVN_GETINFOTIP
+#endif // !__WXWINCE__
case TVN_GETDISPINFO:
eventType = wxEVT_COMMAND_TREE_GET_INFO;
*result = false;
break;
+ case NM_RCLICK:
+ // prevent tree control from sending WM_CONTEXTMENU to our parent
+ // (which it does if NM_RCLICK is not handled) because we want to
+ // send it to the control itself
+ *result =
+ processed = true;
+
+ ::SendMessage(GetHwnd(), WM_CONTEXTMENU,
+ (WPARAM)GetHwnd(), ::GetMessagePos());
+ break;
+
case TVN_BEGINDRAG:
case TVN_BEGINRDRAG:
if ( event.IsAllowed() )
projects / wxWidgets.git / blobdiff