Peter Urbanec : comctl32: Add a check for setting number of parts in the statusbar to zero.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 93b5bcc6eb50ac31509865c3c0ab77ee4e4e222a
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=93b5bcc6eb50ac31509865c3c0ab77ee4e4e222a

Author: Peter Urbanec <winehq.org at urbanec.net>
Date:   Tue Mar  1 12:01:42 2011 +1100

comctl32: Add a check for setting number of parts in the statusbar to zero.

---

 dlls/comctl32/status.c       |    2 ++
 dlls/comctl32/tests/status.c |    6 ++++++
 2 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/dlls/comctl32/status.c b/dlls/comctl32/status.c
index d670370..427fb76 100644
--- a/dlls/comctl32/status.c
+++ b/dlls/comctl32/status.c
@@ -665,6 +665,8 @@ STATUSBAR_SetParts (STATUS_INFO *infoPtr, INT count, LPINT parts)
 
     TRACE("(%d,%p)\n", count, parts);
 
+    if(!count) return FALSE;
+
     oldNumParts = infoPtr->numParts;
     infoPtr->numParts = count;
     if (oldNumParts > infoPtr->numParts) {
diff --git a/dlls/comctl32/tests/status.c b/dlls/comctl32/tests/status.c
index c46b614..8509674 100644
--- a/dlls/comctl32/tests/status.c
+++ b/dlls/comctl32/tests/status.c
@@ -382,6 +382,12 @@ static void test_status_control(void)
     /* Reset number of parts */
     r = SendMessage(hWndStatus, SB_SETPARTS, 2, (LPARAM)nParts);
     expect(TRUE,r);
+    r = SendMessage(hWndStatus, SB_GETPARTS, 0, 0);
+    ok(r == 2, "Expected 2, got %d\n", r);
+    r = SendMessage(hWndStatus, SB_SETPARTS, 0, 0);
+    expect(FALSE,r);
+    r = SendMessage(hWndStatus, SB_GETPARTS, 0, 0);
+    ok(r == 2, "Expected 2, got %d\n", r);
 
     /* Set the minimum height and get rectangle information again */
     SendMessage(hWndStatus, SB_SETMINHEIGHT, 50, 0);