1 files changed, 13 insertions, 0 deletions
diff --git a/alf/alflabel.cpp b/alf/alflabel.cpp
index 59c92fa..f424486 100644
--- a/alf/alflabel.cpp
+++ b/alf/alflabel.cpp
@@ -203,6 +203,19 @@ ALF__LabelWindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 
             ReleaseDC(hwnd, hdcLabel);
         }
+    } else if (uMsg == WM_WINDOWPOSCHANGED) {
+        WINDOWPOS *p = (WINDOWPOS *)lParam;
+        if (!(p->flags & SWP_NOSIZE)) {
+            // for left-top aligned labels, no redraw is necessary
+            // right/bottom/center alignment basically needs to redraw the whole thing
+            DWORD halign = priv->style & ALF_LABEL_HALIGN_MASK;
+            DWORD valign = priv->style & ALF_LABEL_VALIGN_MASK;
+
+            if ((halign != ALF_LABEL_ALIGN_LEFT && halign != ALF_LABEL_ALIGN_LEFT_LIKE_EDIT)
+                    || (valign != ALF_LABEL_ALIGN_TOP && valign != ALF_LABEL_ALIGN_TOP_LIKE_EDIT)) {
+                InvalidateRect(hwnd, NULL, TRUE);
+            }
+        }
     } else if (uMsg == WM_DESTROY) {
         ALF_Free(priv);
         SetWindowLongPtr(hwnd, 0, 0);