From 29393896e21cab201646352cce017992cf0b2ddb Mon Sep 17 00:00:00 2001
From: Jonas Kümmerlin <jonas@kuemmerlin.eu>
Date: Sun, 7 Jul 2019 18:59:26 +0200
Subject: first notebook implementation

---
 alf/alfpanel.cpp | 36 ++++++++++++++++++++++++++----------
 1 file changed, 26 insertions(+), 10 deletions(-)

(limited to 'alf/alfpanel.cpp')

diff --git a/alf/alfpanel.cpp b/alf/alfpanel.cpp
index 5a18976..8583d2e 100644
--- a/alf/alfpanel.cpp
+++ b/alf/alfpanel.cpp
@@ -37,6 +37,16 @@ ALF__PanelWindowProc(HWND window, UINT msg, WPARAM wparam, LPARAM lparam)
         SetWindowLongPtr(window, 0, 0);
     }
 
+    if (msg == WM_ERASEBKGND) {
+        HDC hdc = (HDC)wparam;
+
+        RECT r = { 0, 0, 0, 0 };
+        GetClientRect(window, &r);
+        ALF_Compat_DrawThemeParentBackground(window, hdc, &r);
+
+        return TRUE;
+    }
+
     if (ALF_ShouldMessageBubble(window, msg, wparam, lparam))
         return SendMessage(GetParent(window), msg, wparam, lparam);
 
@@ -74,23 +84,29 @@ ALF_RegisterPanelClass(void)
 
     ATOM classatom = RegisterClass(&cls);
     if (!classatom)
-        MessageBox(NULL, TEXT("FATAL: Could not register Combo class"), NULL, MB_OK);
+        MessageBox(NULL, TEXT("FATAL: Could not register panel class"), NULL, MB_OK);
 
     _alf_panelClass = MAKEINTATOM(classatom);
 }
 
+HWND
+ALF_CreatePanelWindow(HWND parent, WORD id)
+{
+    return CreateWindowEx(WS_EX_CONTROLPARENT,
+                          _alf_panelClass,
+                          TEXT(""),
+                          WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN,
+                          0, 0, 0, 0,
+                          parent,
+                          (HMENU)(int)id,
+                          ALF_HINSTANCE,
+                          NULL);
+}
+
 HWND
 ALF_AddPanel(HWND parent, WORD id, UINT x, UINT y)
 {
-    HWND hwndPanel = CreateWindowEx(WS_EX_CONTROLPARENT,
-                                    _alf_panelClass,
-                                    TEXT(""),
-                                    WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN,
-                                    0, 0, 0, 0,
-                                    parent,
-                                    (HMENU)(int)id,
-                                    ALF_HINSTANCE,
-                                    NULL);
+    HWND hwndPanel = ALF_CreatePanelWindow(parent, id);
 
     ALFWidgetLayoutParams p;
     ZeroMemory(&p, sizeof(p));
-- 
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