fixup transparent background work and add test in widgetfactory

Win32s bites once again with its 16bit WPARAM

1 files changed, 14 insertions, 4 deletions

diff --git a/alf/alfnotebook.cpp b/alf/alfnotebook.cpp
index 898c601..1db4011 100644
--- a/alf/alfnotebook.cpp
+++ b/alf/alfnotebook.cpp
@@ -96,9 +96,9 @@ ALF_Notebook_InternalHandleThemeChange(HWND hwndNotebook, ALFNotebookPriv *priv)
         HWND panel = ALF_Notebook_InternalTabPanel(hwndNotebook, priv->hwndTabCtrl, i);
 
         if (priv->hTheme) {
-            SendMessage(panel, ALF_WM_SETBGCOLOR, (WPARAM)ALF_COLOR_TRANSPARENT, 0);
+            ALF_SetBackgroundColor(panel, ALF_COLOR_TRANSPARENT);
         } else {
-            SendMessage(panel, ALF_WM_SETBGCOLOR, (WPARAM)ALF_COLOR_SYS(COLOR_BTNFACE), 0);
+            ALF_SetBackgroundColor(panel, ALF_COLOR_SYS(COLOR_BTNFACE));
         }
     }
 }
@@ -118,9 +118,9 @@ ALF_Notebook_InternalAddTab(HWND notebook, ALFNotebookPriv *priv, const TCHAR *t
     SendMessage(hwndPanel, WM_SETFONT, (WPARAM)SendMessage(priv->hwndTabCtrl, WM_GETFONT, 0, 0), 0);
 
     if (priv->hTheme) {
-        SendMessage(hwndPanel, ALF_WM_SETBGCOLOR, (WPARAM)ALF_COLOR_TRANSPARENT, 0);
+        ALF_SetBackgroundColor(hwndPanel, ALF_COLOR_TRANSPARENT);
     } else {
-        SendMessage(hwndPanel, ALF_WM_SETBGCOLOR, (WPARAM)ALF_COLOR_SYS(COLOR_BTNFACE), 0);
+        ALF_SetBackgroundColor(hwndPanel, ALF_COLOR_SYS(COLOR_BTNFACE));
     }
 
     TCITEM tie;
@@ -282,6 +282,9 @@ ALF__NotebookWindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
             GetClientRect(hwnd, &r);
             int n = ALF_Notebook_InternalTabCount(hwnd, priv->hwndTabCtrl);
 
+            RECT oldR;
+            GetWindowRect(priv->hwndTabCtrl, &oldR);
+
             HDWP hdwp = BeginDeferWindowPos(n+1);
 
             // SWP_COPYBITS: NT 3.51 sadness, will not invalidate bottom edge properly on resize
@@ -302,6 +305,13 @@ ALF__NotebookWindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
             }
 
             EndDeferWindowPos(hdwp);
+
+            if (priv->hTheme && ((oldR.bottom - oldR.top) != (r.bottom - r.top))) {
+                // only needed when height changes, since bg is tiled horizontally
+                HWND panel = ALF_NotebookSelectedPanel(hwnd);
+                if (panel != NULL)
+                    ALF_InvalidateBackground(panel);
+            }
         }
     } else if (uMsg == ALF_NB_ADDTAB) {
         return (LRESULT)ALF_Notebook_InternalAddTab(hwnd, priv, (TCHAR *)lParam);