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Fix a crash when doing sorted inserts at top level.

This commit is contained in:
Alex Priem 1999-07-03 15:42:33 +00:00 committed by Alexandre Julliard
parent 60c78f143b
commit 124b61904f
1 changed files with 19 additions and 12 deletions
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25
dlls/comctl32/treeview.c
View File

@ -1266,6 +1266,7 @@ TREEVIEW_GetCount (HWND hwnd, WPARAM wParam, LPARAM lParam)
/***************************************************************************
* This method does the chaining of the insertion of a treeview item
* before an item.
* If parent is NULL, we're inserting at the root of the list.
*/
static void TREEVIEW_InsertBefore(
TREEVIEW_INFO *infoPtr,
@ -1280,9 +1281,6 @@ static void TREEVIEW_InsertBefore(
if (newItem == NULL)
ERR("NULL newItem, impossible condition\n");
if (parent == NULL)
ERR("NULL parent, impossible condition\n");
if (sibling != NULL) /* Insert before this sibling for this parent */
{
/* Store the new item sibling up sibling and sibling tem handle */
@ -1304,15 +1302,20 @@ static void TREEVIEW_InsertBefore(
upSibling->sibling = newItem->hItem;
else
/* this item is the first child of this parent, adjust parent pointers */
if (parent)
parent->firstChild = newItem->hItem;
else
infoPtr->TopRootItem= newItem->hItem;
}
else /* Insert as first child of this parent */
if (parent)
parent->firstChild = newItem->hItem;
}
/***************************************************************************
* This method does the chaining of the insertion of a treeview item
* after an item.
* If parent is NULL, we're inserting at the root of the list.
*/
static void TREEVIEW_InsertAfter(
TREEVIEW_INFO *infoPtr,
@ -1324,12 +1327,10 @@ static void TREEVIEW_InsertAfter(
HTREEITEM siblingHandle = 0;
TREEVIEW_ITEM *sibling = NULL;
if (newItem == NULL)
ERR("NULL newItem, impossible condition\n");
if (parent == NULL)
ERR("NULL parent, impossible condition\n");
if (upSibling != NULL) /* Insert after this upsibling for this parent */
{
/* Store the new item up sibling and sibling item handle */
@ -1355,6 +1356,7 @@ static void TREEVIEW_InsertAfter(
*/
}
else /* Insert as first child of this parent */
if (parent)
parent->firstChild = newItem->hItem;
}
@ -1630,12 +1632,17 @@ TREEVIEW_InsertItemA (HWND hwnd, WPARAM wParam, LPARAM lParam)
break;
else
{
TREEVIEW_ITEM *aChild =
&infoPtr->items[(INT)parentItem->firstChild];
TREEVIEW_ITEM *aChild;
TREEVIEW_ITEM *previousChild = NULL;
BOOL bItemInserted = FALSE;
if (parentItem)
aChild = &infoPtr->items[(INT)parentItem->firstChild];
else
aChild = &infoPtr->items[(INT)infoPtr->TopRootItem];
/* Iterate the parent children to see where we fit in */
while ( aChild != NULL )
{
@ -3556,7 +3563,7 @@ TREEVIEW_WindowProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
return TREEVIEW_VScroll (hwnd, wParam, lParam);
case WM_DRAWITEM:
printf ("drawItem\n");
TRACE ("drawItem\n");
return DefWindowProcA (hwnd, uMsg, wParam, lParam);
default: