[PATCH 6/6] comctl32/trackbar: Update control parts when style changed.

[Zhiyi Zhang]

Fix trackbar draws incorrectly after changing style. For example, adding TBS_BOTH should cause a
total repaint.

Signed-off-by: Zhiyi Zhang 
---
 dlls/comctl32/trackbar.c | 25 ++++++++++++++++---------
 1 file changed, 16 insertions(+), 9 deletions(-)

diff --git a/dlls/comctl32/trackbar.c b/dlls/comctl32/trackbar.c
index 1859cf0f516..ce6a20c6c63 100644
--- a/dlls/comctl32/trackbar.c
+++ b/dlls/comctl32/trackbar.c
@@ -1502,6 +1502,19 @@ TRACKBAR_InitializeThumb (TRACKBAR_INFO *infoPtr)
     return 0;
 }

+static void TRACKBAR_RecalculateAll (TRACKBAR_INFO *infoPtr)
+{
+    if (infoPtr->dwStyle & TBS_FIXEDLENGTH)
+    {
+        TRACKBAR_CalcChannel(infoPtr);
+        TRACKBAR_UpdateThumb(infoPtr);
+    }
+    else
+    {
+        TRACKBAR_InitializeThumb(infoPtr);
+    }
+    TRACKBAR_AlignBuddies(infoPtr);
+}

static LRESULT
 TRACKBAR_Create (HWND hwnd, const CREATESTRUCTW *lpcs)
@@ -1677,14 +1690,7 @@ TRACKBAR_SetFocus (TRACKBAR_INFO *infoPtr)
 static LRESULT
 TRACKBAR_Size (TRACKBAR_INFO *infoPtr)
 {
-    if (infoPtr->dwStyle & TBS_FIXEDLENGTH)
-    {
-        TRACKBAR_CalcChannel(infoPtr);
-        TRACKBAR_UpdateThumb(infoPtr);
-    }
-    else
-        TRACKBAR_InitializeThumb(infoPtr);
-    TRACKBAR_AlignBuddies (infoPtr);
+    TRACKBAR_RecalculateAll(infoPtr);
     TRACKBAR_InvalidateAll(infoPtr);

return 0;
@@ -1697,7 +1703,8 @@ TRACKBAR_StyleChanged (TRACKBAR_INFO *infoPtr, WPARAM wStyleType,
     if (wStyleType != GWL_STYLE) return 0;

infoPtr->dwStyle = lpss->styleNew;
-
+    TRACKBAR_RecalculateAll(infoPtr);
+    TRACKBAR_InvalidateAll(infoPtr);
     return 0;
 }