extract toplevel window stuff into alfwindow.cpp

3 files changed, 439 insertions, 447 deletions

diff --git a/alf/alf.cpp b/alf/alf.cpp
index fc441bf..d40522f 100644
--- a/alf/alf.cpp
+++ b/alf/alf.cpp
@@ -5,37 +5,6 @@
 static LONG _alf_initLock = 0;
 static LONG _alf_initCounter = 0;
 
-/* ALF App and Window */
-
-static void
-ALF_InitializeWindowPriv(HWND hwnd, ALFWindowPriv *priv, void *closure)
-{
-    priv->vtbl = (ALFWindowVTable*)GetClassLongPtr(hwnd, 0);
-    priv->closure = closure;
-    priv->defid = (WORD)-1;
-    ALF_Layout_Init(&priv->layout);
-}
-
-static void
-ALF_DestroyWindowPriv(ALFWindowPriv *priv)
-{
-    if (priv->vtbl->postdestroy)
-        priv->vtbl->postdestroy(priv->closure);
-
-    ALF_Layout_Clear(&priv->layout);
-
-    if (priv->fonts.hMessageFont)
-        DeleteObject(priv->fonts.hMessageFont);
-
-    ALF_Free(priv);
-}
-
-int
-ALF_CentipointsToPxPriv(ALFWindowPriv *priv, int cptValue)
-{
-    return MulDiv(cptValue, (int)priv->fonts.dpi, 7200);
-}
-
 void
 ALF_UpdateFonts(HWND win)
 {
@@ -43,302 +12,11 @@ ALF_UpdateFonts(HWND win)
 }
 
 void
-ALF_UpdateFontsPriv(HWND win, ALFWindowPriv *priv)
-{
-    priv->fonts.dpi = ALF_Compat_GetDpiForWindow(win);
-
-    // XXX: SystemParametersInfoForDpi is Unicode-only and needs Vista+ NONCLIENTMETRICS,
-    ALF_NONCLIENTMETRICSW_VISTA ncm;
-    ZeroMemory(&ncm, sizeof(ncm));
-    ncm.cbSize = sizeof(ncm);
-
-    if (ALF_Compat_SystemParametersInfoForDpi(SPI_GETNONCLIENTMETRICS, ncm.cbSize, &ncm, 0, priv->fonts.dpi)) {
-#ifdef UNICODE
-        priv->fonts.lfMessageFont = ncm.lfMessageFont;
-#else
-        ALF_Compat_LogFontWtoA(&ncm.lfMessageFont, &priv->fonts.lfMessageFont);
-#endif
-    } else {
-        // FIXME! fallback to default font, 8pt MS Shell Dlg
-        ZeroMemory(&priv->fonts.lfMessageFont, sizeof(priv->fonts.lfMessageFont));
-
-        priv->fonts.lfMessageFont.lfHeight = -MulDiv(8, (int)priv->fonts.dpi, 72);
-        lstrcpy(priv->fonts.lfMessageFont.lfFaceName, TEXT("MS Shell Dlg"));
-    }
-
-    if (priv->fonts.hMessageFont) {
-        DeleteObject(priv->fonts.hMessageFont);
-    }
-    priv->fonts.hMessageFont = CreateFontIndirect(&priv->fonts.lfMessageFont);
-
-    SendMessage(win, WM_SETFONT, (WPARAM)priv->fonts.hMessageFont, (LPARAM)1);
-}
-
-void
 ALF_InvalidateLayout(HWND hwnd)
 {
     SendMessage(hwnd, ALF_WM_INVALIDATELAYOUT, 0, 0);
 }
 
-static void
-ALF_ApplyFocus(HWND hwnd, ALFWindowPriv *priv, BOOL restoringFocus)
-{
-    if (priv->hwndFocus) {
-        if (!restoringFocus && SendMessage(priv->hwndFocus, WM_GETDLGCODE, 0, 0) & DLGC_HASSETSEL)
-            SendMessage(priv->hwndFocus, EM_SETSEL, 0, -1);
-
-        if (GetForegroundWindow() == hwnd) {
-            HWND oldFocus = SetFocus(priv->hwndFocus);
-
-            // FIXME! restore default button state
-            if (oldFocus && SendMessage(oldFocus, WM_GETDLGCODE, 0, 0) & DLGC_DEFPUSHBUTTON) {
-                SendMessage(oldFocus, BM_SETSTYLE, BS_PUSHBUTTON, TRUE);
-            }
-
-            if (priv->defid != (WORD)-1) {
-                HWND hwndOld = ALF_WidgetHwndById(hwnd, priv->defid);
-                if (hwndOld && SendMessage(hwndOld, WM_GETDLGCODE, 0, 0) & DLGC_DEFPUSHBUTTON) {
-                    SendMessage(hwndOld, BM_SETSTYLE, BS_PUSHBUTTON, TRUE);
-                }
-            }
-
-            if (priv->hwndFocus && SendMessage(priv->hwndFocus, WM_GETDLGCODE, 0, 0) & DLGC_UNDEFPUSHBUTTON) {
-                SendMessage(priv->hwndFocus, BM_SETSTYLE, BS_DEFPUSHBUTTON, TRUE);
-            } else {
-                HWND hwndDef = ALF_WidgetHwndById(hwnd, priv->defid);
-                if (hwndDef && SendMessage(hwndDef, WM_GETDLGCODE, 0, 0) & DLGC_UNDEFPUSHBUTTON) {
-                    SendMessage(hwndDef, BM_SETSTYLE, BS_DEFPUSHBUTTON, TRUE);
-                }
-            }
-        }
-    } else {
-        priv->hwndFocus = GetNextDlgTabItem(hwnd, NULL, FALSE);
-        if (priv->hwndFocus)
-            ALF_ApplyFocus(hwnd, priv, FALSE);
-    }
-}
-
-LRESULT
-ALF_DefWindowProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
-{
-    ALFWindowPriv *priv = (ALFWindowPriv*)GetWindowLongPtr(hwnd, 0);
-
-    if (msg == ALF_WM_GETMODALRESULT) {
-        return (LRESULT)priv->modalResult;
-    }
-    if (msg == ALF_WM_SETMODALRESULT) {
-        priv->modalResult = (int)wparam;
-        return 0;
-    }
-
-    if (msg == ALF_WM_CENTIPOINTTOPX) {
-        return (LRESULT)ALF_CentipointsToPxPriv(priv, (int)wparam);
-    }
-
-    if (msg == ALF_WM_SETFOCUS) {
-        priv->hwndFocus = (HWND)lparam;
-        ALF_ApplyFocus(hwnd, priv, FALSE);
-        return 0;
-    }
-
-    if (msg == ALF_WM_UPDATEFONTS) {
-        ALF_UpdateFontsPriv(hwnd, priv);
-        return 0;
-    }
-
-    if (msg == WM_SETFONT) {
-        priv->font = (HFONT)wparam;
-        if (LOWORD(lparam) != 0)
-            InvalidateRect(hwnd, NULL, TRUE);
-
-        // fallthrough to layout, will propagate font to children
-    }
-
-    if (msg == WM_GETFONT) {
-        return (LRESULT)priv->font;
-    }
-
-    if (msg == ALF_WM_PRETRANSLATEMSG) {
-        return (LRESULT)ALF_PreTranslateMessagePriv(hwnd, priv, (MSG *)lparam);
-    }
-
-    if (msg == WM_COMMAND) {
-        HWND source = (HWND)lparam;
-        WORD code   = HIWORD(wparam);
-        WORD id     = LOWORD(wparam);
-        LRESULT ret = 0;
-        if (source != 0)
-            ret = SendMessage(source, 0x2000 + WM_COMMAND, wparam, lparam);
-
-        if (ret == 0 && priv->vtbl->command)
-            ret = priv->vtbl->command(priv->closure, hwnd, code, id, source);
-
-        return ret;
-    }
-
-    if (msg == WM_NOTIFY) {
-        NMHDR *nmhdr = (NMHDR *)lparam;
-        LRESULT ret = 0;
-
-        if (nmhdr->hwndFrom)
-            ret = SendMessage(nmhdr->hwndFrom, 0x2000 + WM_NOTIFY, wparam, lparam);
-
-        if (ret == 0 && priv->vtbl->notify)
-            ret = priv->vtbl->notify(priv->closure, hwnd, wparam, nmhdr);
-
-        return ret;
-    }
-
-    if (msg == WM_DRAWITEM) {
-        LPDRAWITEMSTRUCT dis = (DRAWITEMSTRUCT *)lparam;
-        LRESULT ret = 0;
-        if (wparam && dis->hwndItem) {
-            ret = SendMessage(dis->hwndItem, 0x2000 + WM_DRAWITEM, wparam, lparam);
-        }
-
-        if (ret)
-            return ret;
-    }
-
-    if (msg == WM_ACTIVATE) {
-        if (!HIWORD(wparam)) { // if !minimized
-            if (LOWORD(wparam)) {
-                ALF_ApplyFocus(hwnd, priv, TRUE);
-            } else {
-                priv->hwndFocus = GetFocus();
-
-                // FIXME! remove default button state
-                // there has to be a better way to do this
-                if (priv->defid != (WORD)-1) {
-                    HWND hwndDefBtn = ALF_WidgetHwndById(hwnd, priv->defid);
-                    if (hwndDefBtn && SendMessage(hwndDefBtn, WM_GETDLGCODE, 0, 0) & DLGC_DEFPUSHBUTTON) {
-                        SendMessage(hwndDefBtn, BM_SETSTYLE, BS_PUSHBUTTON, TRUE);
-                    }
-                }
-
-                if (priv->hwndFocus && SendMessage(priv->hwndFocus, WM_GETDLGCODE, 0, 0) & DLGC_DEFPUSHBUTTON) {
-                    SendMessage(priv->hwndFocus, BM_SETSTYLE, BS_PUSHBUTTON, TRUE);
-                }
-            }
-        }
-        return 0;
-    }
-
-    if (msg == WM_SIZE) {
-        ALF_Layout_Apply(&priv->layout, hwnd);
-    }
-
-    if (msg == WM_SHOWWINDOW) {
-        if (wparam)
-            ALF_Layout_Validate(&priv->layout, hwnd);
-    }
-
-    if (msg == WM_GETMINMAXINFO) {
-        RECT tmp;
-        ZeroMemory(&tmp, sizeof(tmp));
-
-        SIZE s;
-        ZeroMemory(&s, sizeof(s));
-        ALF_Layout_GetMinSize(&priv->layout, hwnd, &s);
-
-        tmp.right = s.cx;
-        tmp.bottom = s.cy;
-
-        if (ALF_Compat_AdjustWindowRectExForDpi(
-                               &tmp,
-                               (DWORD)GetWindowLong(hwnd, GWL_STYLE),
-                               GetMenu(hwnd) != NULL,
-                               (DWORD)GetWindowLong(hwnd, GWL_EXSTYLE),
-                               priv->fonts.dpi)) {
-            MINMAXINFO *i = (MINMAXINFO *)lparam;
-            i->ptMinTrackSize.x = tmp.right - tmp.left;
-            i->ptMinTrackSize.y = tmp.bottom - tmp.top;
-            return 0;
-        }
-    }
-
-    if (msg == WM_CREATE) {
-        ALF_UpdateFontsPriv(hwnd, priv);
-        if (priv->vtbl->create) {
-            priv->vtbl->create(priv->closure, hwnd);
-        }
-        BOOL alwaysUnderline = FALSE;
-        SystemParametersInfo(SPI_GETKEYBOARDCUES, 0, &alwaysUnderline, 0);
-        if (!alwaysUnderline) {
-            SendMessage(hwnd, WM_UPDATEUISTATE, MAKEWPARAM(UIS_INITIALIZE, 0), 0);
-        }
-        ALF_Layout_Apply(&priv->layout, hwnd);
-    }
-
-    if (msg == WM_DESTROY && priv->vtbl->destroy) {
-        priv->vtbl->destroy(priv->closure, hwnd);
-    }
-
-    if (msg == WM_CLOSE) {
-        if (!priv->vtbl->close || !priv->vtbl->close(priv->closure, hwnd)) {
-            priv->modalResult = 2;
-            ShowWindow(hwnd, FALSE);
-        }
-        return TRUE;
-    }
-
-    if (msg == WM_NCDESTROY) {
-        SetWindowLongPtr(hwnd, 0, 0);
-        ALF_DestroyWindowPriv(priv);
-    }
-
-    if (msg == WM_DPICHANGED) {
-        ALF_UpdateFontsPriv(hwnd, priv);
-        ALF_Layout_Invalidate(&priv->layout, hwnd);
-        RECT *r = (RECT*)lparam;
-        SetWindowPos(hwnd, NULL, r->left, r->top, r->right-r->left, r->bottom-r->top, SWP_NOACTIVATE|SWP_NOZORDER);
-    }
-
-    if (msg == WM_THEMECHANGED || msg == WM_SETTINGCHANGE) {
-        ALF_UpdateFontsPriv(hwnd, priv);
-        ALF_Layout_Invalidate(&priv->layout, hwnd);
-    }
-
-    if (msg == DM_GETDEFID) {
-        if (priv->defid == (WORD)-1) {
-            return 0;
-        } else {
-            return MAKELONG(priv->defid, DC_HASDEFID);
-        }
-    }
-    if (msg == DM_SETDEFID) {
-        if (priv->defid != (WORD)-1) {
-            HWND hwndOld = ALF_WidgetHwndById(hwnd, priv->defid);
-            if (hwndOld && SendMessage(hwndOld, WM_GETDLGCODE, 0, 0) & DLGC_DEFPUSHBUTTON) {
-                SendMessage(hwndOld, BM_SETSTYLE, BS_PUSHBUTTON, TRUE);
-            }
-        }
-
-        priv->defid = (WORD)wparam;
-        HWND hwndNew = ALF_WidgetHwndById(hwnd, priv->defid);
-        if (hwndNew && SendMessage(hwndNew, WM_GETDLGCODE, 0, 0) & DLGC_UNDEFPUSHBUTTON) {
-            SendMessage(hwndNew, BM_SETSTYLE, BS_DEFPUSHBUTTON, TRUE);
-        }
-        return TRUE;
-    }
-
-    LRESULT ret = 0;
-    if (ALF_Layout_HandleMessage(&priv->layout, hwnd, msg, wparam, lparam, &ret)) {
-        // if the layout was changed, our current size might be too small
-        // windows will call WM_GETMINMAXINFO and fix it
-        if (msg == ALF_WM_VALIDATELAYOUT) {
-            RECT r;
-            if (GetWindowRect(hwnd, &r)) {
-                SetWindowPos(hwnd, NULL, r.left, r.top, r.right - r.left, r.bottom - r.top, SWP_NOACTIVATE|SWP_NOMOVE|SWP_NOOWNERZORDER|SWP_NOZORDER);
-            }
-        }
-
-        return ret;
-    }
-
-    return DefWindowProc(hwnd, msg, wparam, lparam);
-}
-
 void
 ALF_AddWidget(HWND win, int x, int y, HWND widget, int minWidth, int minHeight, DWORD flags)
 {
@@ -353,30 +31,6 @@ ALF_AddWidget(HWND win, int x, int y, HWND widget, int minWidth, int minHeight,
     SendMessage(win, ALF_WM_ADDWIDGET, 0, (LPARAM)&params);
 }
 
-static LRESULT CALLBACK
-ALF_WindowProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
-{
-    if (msg == WM_NCCREATE) {
-        CREATESTRUCT *cs = (CREATESTRUCT*)(void*)lparam;
-        if (cs->lpCreateParams) {
-            ALFWindowPriv *priv = ALF_New(ALFWindowPriv, 1);
-            SetWindowLongPtr(hwnd, 0, (LONG_PTR)priv);
-            ALF_InitializeWindowPriv(hwnd, priv, *((void**)cs->lpCreateParams));
-        }
-    }
-
-    ALFWindowPriv *priv = (ALFWindowPriv*)(void*)GetWindowLongPtr(hwnd, 0);
-    if (priv != NULL) {
-        if (priv->vtbl->message) {
-            return priv->vtbl->message(priv->closure, hwnd, msg, wparam, lparam);
-        } else {
-            return ALF_DefWindowProc(hwnd, msg, wparam, lparam);
-        }
-    } else {
-        return DefWindowProc(hwnd, msg, wparam, lparam);
-    }
-}
-
 void
 ALF_Initialize(void)
 {
@@ -467,73 +121,6 @@ ALF_BuildUniqueName(TCHAR *buf, const TCHAR *prefix, ULONG_PTR uniquifier)
     buf[prefixlen + numlen] = 0;
 }
 
-LPTSTR
-ALF_RegisterWindowClass(HINSTANCE hInstance, const ALFWindowClassParams *params)
-{
-    WNDCLASS cls;
-    ZeroMemory(&cls, sizeof(cls));
-
-    ALFWindowVTable *pvtbl = ALF_New(ALFWindowVTable, 1);
-    *pvtbl = params->vtbl;
-
-    const TCHAR *classNamePtr = params->className;
-    TCHAR  classNameBuf[256];
-    if (!classNamePtr) {
-        ZeroMemory(classNameBuf, sizeof(classNameBuf));
-        classNamePtr = classNameBuf;
-
-        ALF_BuildUniqueName(classNameBuf, TEXT("ALFWindow."), (ULONG_PTR)pvtbl);
-    }
-
-    cls.style = params->classStyle;
-    cls.hInstance = hInstance;
-    cls.hCursor = LoadCursor(NULL, (LPTSTR)IDC_ARROW);
-    cls.hbrBackground = (HBRUSH)(COLOR_BTNFACE+1);
-    cls.lpszClassName = classNamePtr;
-    cls.cbWndExtra = sizeof(void*);
-    cls.cbClsExtra = sizeof(void*);
-    cls.lpfnWndProc = ALF_WindowProc;
-
-    ATOM classatom = RegisterClass(&cls);
-    if (!classatom) {
-        ALF_Free(pvtbl);
-        return NULL;
-    }
-
-    // XXX: This could have been a HWND_MESSAGE window, but Win95 doesn't support these
-    HWND tmp = CreateWindowEx(0, MAKEINTATOM(classatom), TEXT("dummy"), 0, 0, 0, 0, 0, NULL, 0, hInstance, 0);
-    SetClassLongPtr(tmp, 0, (LONG_PTR)pvtbl);
-    DestroyWindow(tmp);
-
-    return MAKEINTATOM(classatom);
-}
-
-void
-ALF_UnregisterWindowClass(HINSTANCE hinstance, LPCTSTR className)
-{
-    HWND tmp = CreateWindowEx(0, className, TEXT("dummy"), 0, 0, 0, 0, 0, NULL, 0, hinstance, 0);
-    ALFWindowVTable *pvtbl = (ALFWindowVTable*)GetClassLongPtr(tmp, 0);
-    DestroyWindow(tmp);
-
-    ALF_Free(pvtbl);
-
-    UnregisterClass(className, hinstance);
-}
-
-HWND ALF_InstantiateWindow(HINSTANCE hinstance, LPCTSTR className, HWND hwndParent, void *closure)
-{
-    return CreateWindowEx(0,
-                          className,
-                          TEXT("Window"),
-                          WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN,
-                          CW_USEDEFAULT, CW_USEDEFAULT,
-                          300, 100, //FIXME
-                          hwndParent,
-                          NULL,
-                          hinstance,
-                          &closure);
-}
-
 void
 ALF_DestroyWindow(HWND win)
 {
@@ -546,20 +133,6 @@ ALF_PreTranslateMessage(HWND hwnd, MSG *message)
     return (BOOL)SendMessage(hwnd, ALF_WM_PRETRANSLATEMSG, 0, (LPARAM)message);
 }
 
-BOOL
-ALF_PreTranslateMessagePriv(HWND win, ALFWindowPriv *priv, MSG *message)
-{
-    BOOL ret = FALSE;
-
-    if (priv->vtbl->pretranslatemessage)
-        ret = priv->vtbl->pretranslatemessage(priv->closure, win, message);
-
-    if (!ret)
-        ret = IsDialogMessage(win, message);
-
-    return ret;
-}
-
 int
 ALF_ShowModal(HWND win)
 {
diff --git a/alf/alfpriv.h b/alf/alfpriv.h
index a145f8f..d539baf 100644
--- a/alf/alfpriv.h
+++ b/alf/alfpriv.h
@@ -17,31 +17,11 @@
 #include "alfcompat.h"
 #include "alflayout.h"
 
-typedef struct {
-    ALFWindowVTable    *vtbl;
-    void               *closure;
-    ALFWindowFonts      fonts;
-    int                 modalResult;
-    ALFLayout           layout;
-    WORD                defid;
-    HWND                hwndFocus;
-    HFONT               font;
-} ALFWindowPriv;
-
 extern TCHAR *_alf_comboClass;
 extern TCHAR *_alf_panelClass;
 extern TCHAR *_alf_labelClass;
 extern TCHAR *_alf_notebookClass;
 
-int
-ALF_CentipointsToPxPriv(ALFWindowPriv *priv, int cptValue);
-
-void
-ALF_UpdateFontsPriv(HWND hwnd, ALFWindowPriv *priv);
-
-BOOL
-ALF_PreTranslateMessagePriv(HWND win, ALFWindowPriv *priv, MSG *message);
-
 void
 ALF_RegisterComboClass(void);
 
diff --git a/alf/alfwindow.cpp b/alf/alfwindow.cpp
new file mode 100644
index 0000000..0b395b6
--- /dev/null
+++ b/alf/alfwindow.cpp
@@ -0,0 +1,439 @@
+#include "alfpriv.h"
+
+typedef struct {
+    ALFWindowVTable    *vtbl;
+    void               *closure;
+    ALFWindowFonts      fonts;
+    int                 modalResult;
+    ALFLayout           layout;
+    WORD                defid;
+    HWND                hwndFocus;
+    HFONT               font;
+} ALFWindowPriv;
+
+static void
+ALF_InitializeWindowPriv(HWND hwnd, ALFWindowPriv *priv, void *closure)
+{
+    priv->vtbl = (ALFWindowVTable*)GetClassLongPtr(hwnd, 0);
+    priv->closure = closure;
+    priv->defid = (WORD)-1;
+    ALF_Layout_Init(&priv->layout);
+}
+
+static void
+ALF_DestroyWindowPriv(ALFWindowPriv *priv)
+{
+    if (priv->vtbl->postdestroy)
+        priv->vtbl->postdestroy(priv->closure);
+
+    ALF_Layout_Clear(&priv->layout);
+
+    if (priv->fonts.hMessageFont)
+        DeleteObject(priv->fonts.hMessageFont);
+
+    ALF_Free(priv);
+}
+
+static void
+ALF_UpdateFontsPriv(HWND win, ALFWindowPriv *priv)
+{
+    priv->fonts.dpi = ALF_Compat_GetDpiForWindow(win);
+
+    // XXX: SystemParametersInfoForDpi is Unicode-only and needs Vista+ NONCLIENTMETRICS,
+    ALF_NONCLIENTMETRICSW_VISTA ncm;
+    ZeroMemory(&ncm, sizeof(ncm));
+    ncm.cbSize = sizeof(ncm);
+
+    if (ALF_Compat_SystemParametersInfoForDpi(SPI_GETNONCLIENTMETRICS, ncm.cbSize, &ncm, 0, priv->fonts.dpi)) {
+#ifdef UNICODE
+        priv->fonts.lfMessageFont = ncm.lfMessageFont;
+#else
+        ALF_Compat_LogFontWtoA(&ncm.lfMessageFont, &priv->fonts.lfMessageFont);
+#endif
+    } else {
+        // FIXME! fallback to default font, 8pt MS Shell Dlg
+        ZeroMemory(&priv->fonts.lfMessageFont, sizeof(priv->fonts.lfMessageFont));
+
+        priv->fonts.lfMessageFont.lfHeight = -MulDiv(8, (int)priv->fonts.dpi, 72);
+        lstrcpy(priv->fonts.lfMessageFont.lfFaceName, TEXT("MS Shell Dlg"));
+    }
+
+    if (priv->fonts.hMessageFont) {
+        DeleteObject(priv->fonts.hMessageFont);
+    }
+    priv->fonts.hMessageFont = CreateFontIndirect(&priv->fonts.lfMessageFont);
+
+    SendMessage(win, WM_SETFONT, (WPARAM)priv->fonts.hMessageFont, (LPARAM)1);
+}
+
+static int
+ALF_CentipointsToPxPriv(ALFWindowPriv *priv, int cptValue)
+{
+    return MulDiv(cptValue, (int)priv->fonts.dpi, 7200);
+}
+
+static void
+ALF_ApplyFocus(HWND hwnd, ALFWindowPriv *priv, BOOL restoringFocus)
+{
+    if (priv->hwndFocus) {
+        if (!restoringFocus && SendMessage(priv->hwndFocus, WM_GETDLGCODE, 0, 0) & DLGC_HASSETSEL)
+            SendMessage(priv->hwndFocus, EM_SETSEL, 0, -1);
+
+        if (GetForegroundWindow() == hwnd) {
+            HWND oldFocus = SetFocus(priv->hwndFocus);
+
+            // FIXME! restore default button state
+            if (oldFocus && SendMessage(oldFocus, WM_GETDLGCODE, 0, 0) & DLGC_DEFPUSHBUTTON) {
+                SendMessage(oldFocus, BM_SETSTYLE, BS_PUSHBUTTON, TRUE);
+            }
+
+            if (priv->defid != (WORD)-1) {
+                HWND hwndOld = ALF_WidgetHwndById(hwnd, priv->defid);
+                if (hwndOld && SendMessage(hwndOld, WM_GETDLGCODE, 0, 0) & DLGC_DEFPUSHBUTTON) {
+                    SendMessage(hwndOld, BM_SETSTYLE, BS_PUSHBUTTON, TRUE);
+                }
+            }
+
+            if (priv->hwndFocus && SendMessage(priv->hwndFocus, WM_GETDLGCODE, 0, 0) & DLGC_UNDEFPUSHBUTTON) {
+                SendMessage(priv->hwndFocus, BM_SETSTYLE, BS_DEFPUSHBUTTON, TRUE);
+            } else {
+                HWND hwndDef = ALF_WidgetHwndById(hwnd, priv->defid);
+                if (hwndDef && SendMessage(hwndDef, WM_GETDLGCODE, 0, 0) & DLGC_UNDEFPUSHBUTTON) {
+                    SendMessage(hwndDef, BM_SETSTYLE, BS_DEFPUSHBUTTON, TRUE);
+                }
+            }
+        }
+    } else {
+        priv->hwndFocus = GetNextDlgTabItem(hwnd, NULL, FALSE);
+        if (priv->hwndFocus)
+            ALF_ApplyFocus(hwnd, priv, FALSE);
+    }
+}
+
+static BOOL
+ALF_PreTranslateMessagePriv(HWND win, ALFWindowPriv *priv, MSG *message)
+{
+    BOOL ret = FALSE;
+
+    if (priv->vtbl->pretranslatemessage)
+        ret = priv->vtbl->pretranslatemessage(priv->closure, win, message);
+
+    if (!ret)
+        ret = IsDialogMessage(win, message);
+
+    return ret;
+}
+
+static LRESULT CALLBACK
+ALF_WindowProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
+{
+    if (msg == WM_NCCREATE) {
+        CREATESTRUCT *cs = (CREATESTRUCT*)(void*)lparam;
+        if (cs->lpCreateParams) {
+            ALFWindowPriv *priv = ALF_New(ALFWindowPriv, 1);
+            SetWindowLongPtr(hwnd, 0, (LONG_PTR)priv);
+            ALF_InitializeWindowPriv(hwnd, priv, *((void**)cs->lpCreateParams));
+        }
+    }
+
+    ALFWindowPriv *priv = (ALFWindowPriv*)(void*)GetWindowLongPtr(hwnd, 0);
+    if (priv != NULL) {
+        if (priv->vtbl->message) {
+            return priv->vtbl->message(priv->closure, hwnd, msg, wparam, lparam);
+        } else {
+            return ALF_DefWindowProc(hwnd, msg, wparam, lparam);
+        }
+    } else {
+        return DefWindowProc(hwnd, msg, wparam, lparam);
+    }
+}
+
+LRESULT
+ALF_DefWindowProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
+{
+    ALFWindowPriv *priv = (ALFWindowPriv*)GetWindowLongPtr(hwnd, 0);
+
+    if (msg == ALF_WM_GETMODALRESULT) {
+        return (LRESULT)priv->modalResult;
+    }
+    if (msg == ALF_WM_SETMODALRESULT) {
+        priv->modalResult = (int)wparam;
+        return 0;
+    }
+
+    if (msg == ALF_WM_CENTIPOINTTOPX) {
+        return (LRESULT)ALF_CentipointsToPxPriv(priv, (int)wparam);
+    }
+
+    if (msg == ALF_WM_SETFOCUS) {
+        priv->hwndFocus = (HWND)lparam;
+        ALF_ApplyFocus(hwnd, priv, FALSE);
+        return 0;
+    }
+
+    if (msg == ALF_WM_UPDATEFONTS) {
+        ALF_UpdateFontsPriv(hwnd, priv);
+        return 0;
+    }
+
+    if (msg == WM_SETFONT) {
+        priv->font = (HFONT)wparam;
+        if (LOWORD(lparam) != 0)
+            InvalidateRect(hwnd, NULL, TRUE);
+
+        // fallthrough to layout, will propagate font to children
+    }
+
+    if (msg == WM_GETFONT) {
+        return (LRESULT)priv->font;
+    }
+
+    if (msg == ALF_WM_PRETRANSLATEMSG) {
+        return (LRESULT)ALF_PreTranslateMessagePriv(hwnd, priv, (MSG *)lparam);
+    }
+
+    if (msg == WM_COMMAND) {
+        HWND source = (HWND)lparam;
+        WORD code   = HIWORD(wparam);
+        WORD id     = LOWORD(wparam);
+        LRESULT ret = 0;
+        if (source != 0)
+            ret = SendMessage(source, 0x2000 + WM_COMMAND, wparam, lparam);
+
+        if (ret == 0 && priv->vtbl->command)
+            ret = priv->vtbl->command(priv->closure, hwnd, code, id, source);
+
+        return ret;
+    }
+
+    if (msg == WM_NOTIFY) {
+        NMHDR *nmhdr = (NMHDR *)lparam;
+        LRESULT ret = 0;
+
+        if (nmhdr->hwndFrom)
+            ret = SendMessage(nmhdr->hwndFrom, 0x2000 + WM_NOTIFY, wparam, lparam);
+
+        if (ret == 0 && priv->vtbl->notify)
+            ret = priv->vtbl->notify(priv->closure, hwnd, wparam, nmhdr);
+
+        return ret;
+    }
+
+    if (msg == WM_DRAWITEM) {
+        LPDRAWITEMSTRUCT dis = (DRAWITEMSTRUCT *)lparam;
+        LRESULT ret = 0;
+        if (wparam && dis->hwndItem) {
+            ret = SendMessage(dis->hwndItem, 0x2000 + WM_DRAWITEM, wparam, lparam);
+        }
+
+        if (ret)
+            return ret;
+    }
+
+    if (msg == WM_ACTIVATE) {
+        if (!HIWORD(wparam)) { // if !minimized
+            if (LOWORD(wparam)) {
+                ALF_ApplyFocus(hwnd, priv, TRUE);
+            } else {
+                priv->hwndFocus = GetFocus();
+
+                // FIXME! remove default button state
+                // there has to be a better way to do this
+                if (priv->defid != (WORD)-1) {
+                    HWND hwndDefBtn = ALF_WidgetHwndById(hwnd, priv->defid);
+                    if (hwndDefBtn && SendMessage(hwndDefBtn, WM_GETDLGCODE, 0, 0) & DLGC_DEFPUSHBUTTON) {
+                        SendMessage(hwndDefBtn, BM_SETSTYLE, BS_PUSHBUTTON, TRUE);
+                    }
+                }
+
+                if (priv->hwndFocus && SendMessage(priv->hwndFocus, WM_GETDLGCODE, 0, 0) & DLGC_DEFPUSHBUTTON) {
+                    SendMessage(priv->hwndFocus, BM_SETSTYLE, BS_PUSHBUTTON, TRUE);
+                }
+            }
+        }
+        return 0;
+    }
+
+    if (msg == WM_SIZE) {
+        ALF_Layout_Apply(&priv->layout, hwnd);
+    }
+
+    if (msg == WM_SHOWWINDOW) {
+        if (wparam)
+            ALF_Layout_Validate(&priv->layout, hwnd);
+    }
+
+    if (msg == WM_GETMINMAXINFO) {
+        RECT tmp;
+        ZeroMemory(&tmp, sizeof(tmp));
+
+        SIZE s;
+        ZeroMemory(&s, sizeof(s));
+        ALF_Layout_GetMinSize(&priv->layout, hwnd, &s);
+
+        tmp.right = s.cx;
+        tmp.bottom = s.cy;
+
+        if (ALF_Compat_AdjustWindowRectExForDpi(
+                               &tmp,
+                               (DWORD)GetWindowLong(hwnd, GWL_STYLE),
+                               GetMenu(hwnd) != NULL,
+                               (DWORD)GetWindowLong(hwnd, GWL_EXSTYLE),
+                               priv->fonts.dpi)) {
+            MINMAXINFO *i = (MINMAXINFO *)lparam;
+            i->ptMinTrackSize.x = tmp.right - tmp.left;
+            i->ptMinTrackSize.y = tmp.bottom - tmp.top;
+            return 0;
+        }
+    }
+
+    if (msg == WM_CREATE) {
+        ALF_UpdateFontsPriv(hwnd, priv);
+        if (priv->vtbl->create) {
+            priv->vtbl->create(priv->closure, hwnd);
+        }
+        BOOL alwaysUnderline = FALSE;
+        SystemParametersInfo(SPI_GETKEYBOARDCUES, 0, &alwaysUnderline, 0);
+        if (!alwaysUnderline) {
+            SendMessage(hwnd, WM_UPDATEUISTATE, MAKEWPARAM(UIS_INITIALIZE, 0), 0);
+        }
+        ALF_Layout_Apply(&priv->layout, hwnd);
+    }
+
+    if (msg == WM_DESTROY && priv->vtbl->destroy) {
+        priv->vtbl->destroy(priv->closure, hwnd);
+    }
+
+    if (msg == WM_CLOSE) {
+        if (!priv->vtbl->close || !priv->vtbl->close(priv->closure, hwnd)) {
+            priv->modalResult = 2;
+            ShowWindow(hwnd, FALSE);
+        }
+        return TRUE;
+    }
+
+    if (msg == WM_NCDESTROY) {
+        SetWindowLongPtr(hwnd, 0, 0);
+        ALF_DestroyWindowPriv(priv);
+    }
+
+    if (msg == WM_DPICHANGED) {
+        ALF_UpdateFontsPriv(hwnd, priv);
+        ALF_Layout_Invalidate(&priv->layout, hwnd);
+        RECT *r = (RECT*)lparam;
+        SetWindowPos(hwnd, NULL, r->left, r->top, r->right-r->left, r->bottom-r->top, SWP_NOACTIVATE|SWP_NOZORDER);
+    }
+
+    if (msg == WM_THEMECHANGED || msg == WM_SETTINGCHANGE) {
+        ALF_UpdateFontsPriv(hwnd, priv);
+        ALF_Layout_Invalidate(&priv->layout, hwnd);
+    }
+
+    if (msg == DM_GETDEFID) {
+        if (priv->defid == (WORD)-1) {
+            return 0;
+        } else {
+            return MAKELONG(priv->defid, DC_HASDEFID);
+        }
+    }
+    if (msg == DM_SETDEFID) {
+        if (priv->defid != (WORD)-1) {
+            HWND hwndOld = ALF_WidgetHwndById(hwnd, priv->defid);
+            if (hwndOld && SendMessage(hwndOld, WM_GETDLGCODE, 0, 0) & DLGC_DEFPUSHBUTTON) {
+                SendMessage(hwndOld, BM_SETSTYLE, BS_PUSHBUTTON, TRUE);
+            }
+        }
+
+        priv->defid = (WORD)wparam;
+        HWND hwndNew = ALF_WidgetHwndById(hwnd, priv->defid);
+        if (hwndNew && SendMessage(hwndNew, WM_GETDLGCODE, 0, 0) & DLGC_UNDEFPUSHBUTTON) {
+            SendMessage(hwndNew, BM_SETSTYLE, BS_DEFPUSHBUTTON, TRUE);
+        }
+        return TRUE;
+    }
+
+    LRESULT ret = 0;
+    if (ALF_Layout_HandleMessage(&priv->layout, hwnd, msg, wparam, lparam, &ret)) {
+        // if the layout was changed, our current size might be too small
+        // windows will call WM_GETMINMAXINFO and fix it
+        if (msg == ALF_WM_VALIDATELAYOUT) {
+            RECT r;
+            if (GetWindowRect(hwnd, &r)) {
+                SetWindowPos(hwnd, NULL, r.left, r.top, r.right - r.left, r.bottom - r.top, SWP_NOACTIVATE|SWP_NOMOVE|SWP_NOOWNERZORDER|SWP_NOZORDER);
+            }
+        }
+
+        return ret;
+    }
+
+    return DefWindowProc(hwnd, msg, wparam, lparam);
+}
+
+LPTSTR
+ALF_RegisterWindowClass(HINSTANCE hInstance, const ALFWindowClassParams *params)
+{
+    WNDCLASS cls;
+    ZeroMemory(&cls, sizeof(cls));
+
+    ALFWindowVTable *pvtbl = ALF_New(ALFWindowVTable, 1);
+    *pvtbl = params->vtbl;
+
+    const TCHAR *classNamePtr = params->className;
+    TCHAR  classNameBuf[256];
+    if (!classNamePtr) {
+        ZeroMemory(classNameBuf, sizeof(classNameBuf));
+        classNamePtr = classNameBuf;
+
+        ALF_BuildUniqueName(classNameBuf, TEXT("ALFWindow."), (ULONG_PTR)pvtbl);
+    }
+
+    cls.style = params->classStyle;
+    cls.hInstance = hInstance;
+    cls.hCursor = LoadCursor(NULL, (LPTSTR)IDC_ARROW);
+    cls.hbrBackground = (HBRUSH)(COLOR_BTNFACE+1);
+    cls.lpszClassName = classNamePtr;
+    cls.cbWndExtra = sizeof(void*);
+    cls.cbClsExtra = sizeof(void*);
+    cls.lpfnWndProc = ALF_WindowProc;
+
+    ATOM classatom = RegisterClass(&cls);
+    if (!classatom) {
+        ALF_Free(pvtbl);
+        return NULL;
+    }
+
+    // XXX: This could have been a HWND_MESSAGE window, but Win95 doesn't support these
+    HWND tmp = CreateWindowEx(0, MAKEINTATOM(classatom), TEXT("dummy"), 0, 0, 0, 0, 0, NULL, 0, hInstance, 0);
+    SetClassLongPtr(tmp, 0, (LONG_PTR)pvtbl);
+    DestroyWindow(tmp);
+
+    return MAKEINTATOM(classatom);
+}
+
+void
+ALF_UnregisterWindowClass(HINSTANCE hinstance, LPCTSTR className)
+{
+    HWND tmp = CreateWindowEx(0, className, TEXT("dummy"), 0, 0, 0, 0, 0, NULL, 0, hinstance, 0);
+    ALFWindowVTable *pvtbl = (ALFWindowVTable*)GetClassLongPtr(tmp, 0);
+    DestroyWindow(tmp);
+
+    ALF_Free(pvtbl);
+
+    UnregisterClass(className, hinstance);
+}
+
+HWND ALF_InstantiateWindow(HINSTANCE hinstance, LPCTSTR className, HWND hwndParent, void *closure)
+{
+    return CreateWindowEx(0,
+                          className,
+                          TEXT("Window"),
+                          WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN,
+                          CW_USEDEFAULT, CW_USEDEFAULT,
+                          300, 100, //FIXME
+                          hwndParent,
+                          NULL,
+                          hinstance,
+                          &closure);
+}
+
+