controls: subclass generic "ALFControl" window

The idea is that the compiler can strip unused controls when linking
statically, but the window class initialization functions blocked that.

1 files changed, 9 insertions, 35 deletions

diff --git a/alf/alfcombobox.cpp b/alf/alfcombobox.cpp
index 3ce7326..2b24fa7 100644
--- a/alf/alfcombobox.cpp
+++ b/alf/alfcombobox.cpp
@@ -11,8 +11,6 @@
 #define ALF_CB_GETSTYLE         (ALF_WM__BASE + 207)
 #define ALF_CB_FINDSTRINGEXACT  (ALF_WM__BASE + 208)
 
-TCHAR *_alf_comboClass = NULL;
-
 typedef struct {
     DWORD  comboStyle;
 } ALFComboCreateParams;
@@ -83,7 +81,7 @@ ALF__ComboWindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
     ALFComboPriv *priv = (ALFComboPriv *)GetWindowLongPtr(hwnd, 0);
 
     if (uMsg == WM_CREATE) {
-        ALFComboCreateParams *params = (ALFComboCreateParams*)((CREATESTRUCT*)lParam)->lpCreateParams;
+        ALFComboCreateParams *params = (ALFComboCreateParams*)((ALFControlCreateParams *)((CREATESTRUCT*)lParam)->lpCreateParams)->param;
 
         priv = ALF_Combo_InitializePriv(hwnd, params);
         SetWindowLongPtr(hwnd, 0, (LONG_PTR)priv);
@@ -300,44 +298,20 @@ ALF__ComboWindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 }
 
 
-void
-ALF_RegisterComboClass(void)
-{
-    WNDCLASS cls;
-    ZeroMemory(&cls, sizeof(cls));
-
-    TCHAR  classNameBuf[256];
-    ALF_BuildUniqueName(classNameBuf, TEXT("ALFComboBox."), (ULONG_PTR)&_alf_comboClass);
-
-    cls.hInstance = ALF_HINSTANCE;
-    cls.hCursor = LoadCursor(NULL, (LPTSTR)IDC_ARROW);
-    cls.hbrBackground = (HBRUSH)(COLOR_BTNFACE+1);
-    cls.lpszClassName = classNameBuf;
-    cls.cbWndExtra = sizeof(void*);
-    cls.lpfnWndProc = ALF__ComboWindowProc;
-
-    ATOM classatom = RegisterClass(&cls);
-    if (!classatom)
-        MessageBox(NULL, TEXT("FATAL: Could not register Combo class"), NULL, MB_OK);
-
-    _alf_comboClass = MAKEINTATOM(classatom);
-}
-
 static HWND
 ALF_InternalAddComboBox(HWND win, WORD id, int x, int y, DWORD style, const TCHAR *defaultText)
 {
     ALFComboCreateParams cp;
     cp.comboStyle = style;
 
-    HWND hwndCombo = CreateWindowEx(WS_EX_CONTROLPARENT,
-                                    _alf_comboClass,
-                                    TEXT(""),
-                                    WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN,
-                                    0, 0, 0, 0,
-                                    win,
-                                    (HMENU)(ULONG_PTR)id,
-                                    ALF_HINSTANCE,
-                                    &cp);
+    HWND hwndCombo = ALF_CreateControlWindow(WS_EX_CONTROLPARENT,
+                                             TEXT(""),
+                                             WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN,
+                                             0, 0, 0, 0,
+                                             win,
+                                             (HMENU)(ULONG_PTR)id,
+                                             ALF__ComboWindowProc,
+                                             &cp);
 
     if (defaultText)
         SetWindowText(hwndCombo, defaultText);