[PATCH 2/2] comctl32/treeview: Prevent default processing in TREEVIEW_SendSimpleNotify when window handle is invalid.

[Jacob Czekalla]

From: Jacob Czekalla

SendSimpleNotify should return TRUE when the window handle receiving the message is invalid (e.g. destroyed) to prevent further default message processing.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=58211
---
 dlls/comctl32/tests/treeview.c | 2 +-
 dlls/comctl32/treeview.c       | 6 +++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/dlls/comctl32/tests/treeview.c b/dlls/comctl32/tests/treeview.c
index e6f8ca648f4..2708bffb669 100644
--- a/dlls/comctl32/tests/treeview.c
+++ b/dlls/comctl32/tests/treeview.c
@@ -3184,7 +3184,7 @@ static void test_treeview_delete_midclick(void)
     }

flush_events();
-    ok_sequence(sequences, TREEVIEW_SEQ_INDEX, test_click_delete_seq, "treeview click and destroy sequence", TRUE);
+    ok_sequence(sequences, TREEVIEW_SEQ_INDEX, test_click_delete_seq, "treeview click and destroy sequence", FALSE);

SetCursorPos(orig_pos.x, orig_pos.y);
     g_click_delete_test = 0;
diff --git a/dlls/comctl32/treeview.c b/dlls/comctl32/treeview.c
index 073f62c66a2..5848c8c1932 100644
--- a/dlls/comctl32/treeview.c
+++ b/dlls/comctl32/treeview.c
@@ -526,7 +526,11 @@ static BOOL
 TREEVIEW_SendSimpleNotify(const TREEVIEW_INFO *infoPtr, UINT code)
 {
     NMHDR hdr;
-    return TREEVIEW_SendRealNotify(infoPtr, code, &hdr);
+    BOOL result = TREEVIEW_SendRealNotify(infoPtr, code, &hdr);
+
+    if(!IsWindow(infoPtr->hwnd))
+        result = TRUE;
+    return result;
 }

static VOID