#include "wx/imaglist.h"
#include "wx/msw/dragimag.h"
+#include "wx/msw/uxtheme.h"
// macros to hide the cast ugliness
// --------------------------------
// The vista tree control includes some new code that originally broke the
// multi-selection tree, causing seemingly spurious item selection state changes
// during Shift or Ctrl-click item selection. (To witness the original broken
-// behavior, simply make IsLocked() below always return false). This problem was
+// behaviour, simply make IsLocked() below always return false). This problem was
// solved by using the following class to 'unlock' an item's selection state.
class TreeItemUnlocker
// private functions
// ----------------------------------------------------------------------------
+namespace
+{
+
+// Work around a problem with TreeView_GetItemRect() when using MinGW/Cygwin:
+// it results in warnings about breaking strict aliasing rules because HITEM is
+// passed via a RECT pointer, so use a union to avoid them and define our own
+// version of the standard macro using it.
+union TVGetItemRectParam
+{
+ RECT rect;
+ HTREEITEM hItem;
+};
+
+inline bool
+wxTreeView_GetItemRect(HWND hwnd,
+ HTREEITEM hItem,
+ TVGetItemRectParam& param,
+ BOOL fItemRect)
+{
+ param.hItem = hItem;
+ return ::SendMessage(hwnd, TVM_GETITEMRECT, fItemRect,
+ (LPARAM)¶m) == TRUE;
+}
+
+} // anonymous namespace
+
// wrappers for TreeView_GetItem/TreeView_SetItem
static bool IsItemSelected(HWND hwndTV, HTREEITEM hItem)
{
wxSetCCUnicodeFormat(GetHwnd());
+ if ( m_windowStyle & wxTR_TWIST_BUTTONS )
+ {
+ // Under Vista and later Explorer uses rotating ("twist") buttons
+ // instead of the default "+/-" ones so apply its theme to the tree
+ // control to implement this style.
+ if ( wxGetWinVersion() >= wxWinVersion_Vista )
+ {
+ if ( wxUxThemeEngine *theme = wxUxThemeEngine::GetIfActive() )
+ {
+ theme->SetWindowTheme(GetHwnd(), L"EXPLORER", NULL);
+ }
+ }
+ }
+
return true;
}
}
// Bug in Gnu-Win32 headers, so don't use the macro TreeView_GetItemRect
- RECT rect;
-
- // this ugliness comes directly from MSDN - it *is* the correct way to pass
- // the HTREEITEM with TVM_GETITEMRECT
- *(HTREEITEM *)&rect = HITEM(item);
+ TVGetItemRectParam param;
// true means to get rect for just the text, not the whole line
- if ( !::SendMessage(GetHwnd(), TVM_GETITEMRECT, true, (LPARAM)&rect) )
+ if ( !wxTreeView_GetItemRect(GetHwnd(), HITEM(item), param, TRUE) )
{
// if TVM_GETITEMRECT returned false, then the item is definitely not
// visible (because its parent is not expanded)
// however if it returned true, the item might still be outside the
// currently visible part of the tree, test for it (notice that partly
// visible means visible here)
- return rect.bottom > 0 && rect.top < GetClientSize().y;
+ return param.rect.bottom > 0 && param.rect.top < GetClientSize().y;
}
bool wxTreeCtrl::ItemHasChildren(const wxTreeItemId& item) const
// need this to make the "[+]" appear
if ( firstChild )
{
- RECT rect;
- TreeView_GetItemRect(GetHwnd(), HITEM(parent), &rect, FALSE);
- ::InvalidateRect(GetHwnd(), &rect, FALSE);
+ TVGetItemRectParam param;
+
+ wxTreeView_GetItemRect(GetHwnd(), HITEM(parent), param, FALSE);
+ ::InvalidateRect(GetHwnd(), ¶m.rect, FALSE);
}
// associate the application tree item with Win32 tree item handle
wxRect& rect,
bool textOnly) const
{
- RECT rc;
-
// Virtual root items have no bounding rectangle
if ( IS_VIRTUAL_ROOT(item) )
{
return false;
}
- if ( TreeView_GetItemRect(GetHwnd(), HITEM(item),
- &rc, textOnly) )
+ TVGetItemRectParam param;
+
+ if ( wxTreeView_GetItemRect(GetHwnd(), HITEM(item), param, textOnly) )
{
- rect = wxRect(wxPoint(rc.left, rc.top), wxPoint(rc.right, rc.bottom));
+ rect = wxRect(wxPoint(param.rect.left, param.rect.top),
+ wxPoint(param.rect.right, param.rect.bottom));
return true;
}
// do it for the other items itself - help it
wxArrayTreeItemIds selections;
size_t count = GetSelections(selections);
- RECT rect;
+ TVGetItemRectParam param;
for ( size_t n = 0; n < count; n++ )
{
// TreeView_GetItemRect() will return false if item is not
// visible, which may happen perfectly well
- if ( TreeView_GetItemRect(GetHwnd(), HITEM(selections[n]),
- &rect, TRUE) )
+ if ( wxTreeView_GetItemRect(GetHwnd(), HITEM(selections[n]),
+ param, TRUE) )
{
- ::InvalidateRect(GetHwnd(), &rect, FALSE);
+ ::InvalidateRect(GetHwnd(), ¶m.rect, FALSE);
}
}
}
// the wrong items are deselected.
// Fortunately, Vista provides a new notification, TVN_ITEMCHANGING
- // that can be used to regulate this incorrect behavior. The
+ // that can be used to regulate this incorrect behaviour. The
// following messages will allow only the unlocked item's selection
// state to change