Converted the WM_NOTIFY and WM_HSCROLL handlers to use the new windows/events.c system.

redo/windows/control.c

@@ -4,8 +4,6 @@
 struct singleHWND {
 	uiControl *c;
 	HWND hwnd;
-	BOOL (*onWM_NOTIFY)(uiControl *, NMHDR *, LRESULT *);
-	BOOL (*onWM_HSCROLL)(uiControl *, WORD, LRESULT *);
 	void (*onDestroy)(void *);
 	void *onDestroyData;
 };
@@ -16,6 +14,8 @@ void osSingleDestroy(void *internal)
 
 	(*(s->onDestroy))(s->onDestroyData);
 	uiWindowsUnregisterWM_COMMANDHandler(s->hwnd);
+	uiWindowsUnregisterWM_NOTIFYHandler(s->hwnd);
+	uiWindowsUnregisterWM_HSCROLLHandler(s->hwnd);
 	if (DestroyWindow(s->hwnd) == 0)
 		logLastError("error destroying control in singleDestroy()");
 	uiFree(s);
@@ -104,28 +104,6 @@ static int singleStartZOrder(uiControl *c, uiControlSysFuncParams *p)
 	return 0;
 }
 
-static LRESULT CALLBACK singleSubclassProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam, UINT_PTR uIdSubclass, DWORD_PTR dwRefData)
-{
-	struct singleHWND *s = (struct singleHWND *) dwRefData;
-	LRESULT lResult;
-
-	switch (uMsg) {
-	case msgNOTIFY:
-		if ((*(s->onWM_NOTIFY))(s->c, (NMHDR *) lParam, &lResult) != FALSE)
-			return lResult;
-		break;
-	case msgHSCROLL:
-		if ((*(s->onWM_HSCROLL))(s->c, LOWORD(wParam), &lResult) != FALSE)
-			return lResult;
-		break;
-	case WM_NCDESTROY:
-		if (RemoveWindowSubclass(hwnd, singleSubclassProc, uIdSubclass) == FALSE)
-			logLastError("error removing Windows control subclass in singleSubclassProc()");
-		break;
-	}
-	return DefSubclassProc(hwnd, uMsg, wParam, lParam);
-}
-
 void uiWindowsMakeControl(uiControl *c, uiWindowsMakeControlParams *p)
 {
 	struct singleHWND *s;
@@ -143,8 +121,8 @@ void uiWindowsMakeControl(uiControl *c, uiWindowsMakeControlParams *p)
 		logLastError("error creating control in uiWindowsMakeControl()");
 
 	uiWindowsRegisterWM_COMMANDHandler(s->hwnd, p->onWM_COMMAND, uiControl(c));
-	s->onWM_NOTIFY = p->onWM_NOTIFY;
-	s->onWM_HSCROLL = p->onWM_HSCROLL;
+	uiWindowsRegisterWM_NOTIFYHandler(s->hwnd, p->onWM_NOTIFY, uiControl(c));
+	uiWindowsRegisterWM_HSCROLLHandler(s->hwnd, p->onWM_HSCROLL, uiControl(c));
 
 	s->onDestroy = p->onDestroy;
 	s->onDestroyData = p->onDestroyData;
@@ -152,10 +130,6 @@ void uiWindowsMakeControl(uiControl *c, uiWindowsMakeControlParams *p)
 	if (p->useStandardControlFont)
 		SendMessageW(s->hwnd, WM_SETFONT, (WPARAM) hMessageFont, (LPARAM) TRUE);
 
-	// this handles redirected notification messages
-	if (SetWindowSubclass(s->hwnd, singleSubclassProc, 0, (DWORD_PTR) s) == FALSE)
-		logLastError("error subclassing Windows control in uiWindowsMakeControl()");
-
 	makeControl(uiControl(c), s);
 
 	// PreferredSize() implemented by the individual controls

redo/windows/events.c

@@ -28,44 +28,59 @@ struct commandHandler *commandHandlers = NULL;
 struct notifyHandler *notifyHandlers = NULL;
 struct hscrollHandler *hscrollHandlers = NULL;
 
-void uiWindowsRegisterWM_COMMANDHandler(HWND hwnd, BOOL (*handler)(uiControl *, WORD, LRESULT *), uiControl *c)
-{
-	struct commandHandler *ch;
-
-	HASH_FIND_PTR(commandHandlers, &hwnd, ch);
-	if (ch != NULL)
-		complain("window handle %p already subscribed to receive WM_COMMANDs in uiWindowsRegisterWM_COMMANDHandler()", hwnd);
-	ch = uiNew(struct commandHandler);
-	ch->hwnd = hwnd;
-	ch->handler = handler;
-	ch->c = c;
-	HASH_ADD_PTR(commandHandlers, hwnd, ch);
+#define REGFN(WM_MESSAGE, message, params) \
+	void uiWindowsRegister ## WM_MESSAGE ## Handler(HWND hwnd, BOOL (*handler)params, uiControl *c) \
+	{ \
+		struct message ## Handler *ch; \
+		HASH_FIND_PTR(message ## Handlers, &hwnd, ch); \
+		if (ch != NULL) \
+			complain("window handle %p already subscribed with a %s handler in uiWindowsRegister%sHandler()", hwnd, #WM_MESSAGE, #WM_MESSAGE); \
+		ch = uiNew(struct message ## Handler); \
+		ch->hwnd = hwnd; \
+		ch->handler = handler; \
+		ch->c = c; \
+		HASH_ADD_PTR(message ## Handlers, hwnd, ch); \
 	}
+REGFN(WM_COMMAND, command, (uiControl *, WORD, LRESULT *))
+REGFN(WM_NOTIFY, notify, (uiControl *, NMHDR *, LRESULT *))
+REGFN(WM_HSCROLL, hscroll, (uiControl *, WORD, LRESULT *))
 
-void uiWindowsUnregisterWM_COMMANDHandler(HWND hwnd)
-{
-	struct commandHandler *ch;
-
-	HASH_FIND_PTR(commandHandlers, &hwnd, ch);
-	if (ch == NULL)
-		complain("window handle %p not registered with a WM_COMMAND handler in uiWindowsUnregisterWM_COMMANDHandler()", hwnd);
-	HASH_DEL(commandHandlers, ch);
-	uiFree(ch);
+#define UNREGFN(WM_MESSAGE, message) \
+	void uiWindowsUnregister ## WM_MESSAGE ## Handler(HWND hwnd) \
+	{ \
+		struct message ## Handler *ch; \
+		HASH_FIND_PTR(message ## Handlers, &hwnd, ch); \
+		if (ch == NULL) \
+			complain("window handle %p not registered with a %s handler in uiWindowsUnregister%sHandler()", hwnd, #WM_MESSAGE, #WM_MESSAGE); \
+		HASH_DEL(message ## Handlers, ch); \
+		uiFree(ch); \
 	}
+UNREGFN(WM_COMMAND, command)
+UNREGFN(WM_NOTIFY, notify)
+UNREGFN(WM_HSCROLL, hscroll)
 
-BOOL runWM_COMMAND(WPARAM wParam, LPARAM lParam, LRESULT *lResult)
-{
-	HWND control;
-	struct commandHandler *ch;
-
-	// bounce back to the control in question
-	// don't bounce back if to the utility window, in which case act as if the message was ignored
-	control = (HWND) lParam;
-	if (control != NULL && IsChild(utilWindow, control) == 0) {
-		HASH_FIND_PTR(commandHandlers, &control, ch);
-		if (ch != NULL)
-			return (*(ch->handler))(ch->c, HIWORD(wParam), lResult);
-		// not registered; fall out to return FALSE
-	}
-	return FALSE;
+#define RUNFN(WM_MESSAGE, message, gethwnd, arg2) \
+	BOOL run ## WM_MESSAGE(WPARAM wParam, LPARAM lParam, LRESULT *lResult) \
+	{ \
+		HWND control; \
+		struct message ## Handler *ch;\
+		/* bounce back to the control in question */ \
+		/* don't bounce back if to the utility window, in which case act as if the message was ignored */ \
+		control = gethwnd; \
+		if (control != NULL && IsChild(utilWindow, control) == 0) { \
+			HASH_FIND_PTR(message ## Handlers, &control, ch); \
+			if (ch != NULL) \
+				return (*(ch->handler))(ch->c, arg2, lResult); \
+			/* not registered; fall out to return FALSE */ \
+		} \
+		return FALSE; \
 	}
+RUNFN(WM_COMMAND, command,
+	(HWND) lParam,
+	HIWORD(wParam))
+RUNFN(WM_NOTIFY, notify,
+	((NMHDR *) lParam)->hwndFrom,
+	((NMHDR *) lParam))
+RUNFN(WM_HSCROLL, hscroll,
+	(HWND) lParam,
+	LOWORD(wParam))

redo/windows/parent.c

@@ -113,21 +113,9 @@ BOOL handleParentMessages(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam, LR
 	case WM_COMMAND:
 		return runWM_COMMAND(wParam, lParam, lResult);
 	case WM_NOTIFY:
-		// same as WM_COMMAND
-		control = nm->hwndFrom;
-		if (control != NULL && IsChild(utilWindow, control) == 0) {
-			*lResult = SendMessageW(control, msgNOTIFY, wParam, lParam);
-			return TRUE;
-		}
-		break;
+		return runWM_NOTIFY(wParam, lParam, lResult);
 	case WM_HSCROLL:
-		// same as WM_COMMAND
-		control = (HWND) lParam;
-		if (control != NULL && IsChild(utilWindow, control) == 0) {
-			*lResult = SendMessageW(control, msgHSCROLL, wParam, lParam);
-			return TRUE;
-		}
-		break;
+		return runWM_HSCROLL(wParam, lParam, lResult);
 	case WM_CTLCOLORSTATIC:
 	case WM_CTLCOLORBTN:
 		if (parentBrush != NULL)

redo/windows/uipriv_windows.h

@@ -112,5 +112,11 @@ extern void tabLeaveTabNavigation(HWND);
 // events.c
 // TODO split the uiWindows ones to ui_windows.h
 extern void uiWindowsRegisterWM_COMMANDHandler(HWND, BOOL (*)(uiControl *, WORD, LRESULT *), uiControl *);
+extern void uiWindowsRegisterWM_NOTIFYHandler(HWND, BOOL (*)(uiControl *, NMHDR *, LRESULT *), uiControl *);
+extern void uiWindowsRegisterWM_HSCROLLHandler(HWND, BOOL (*)(uiControl *, WORD, LRESULT *), uiControl *);
 extern void uiWindowsUnregisterWM_COMMANDHandler(HWND);
+extern void uiWindowsUnregisterWM_NOTIFYHandler(HWND);
+extern void uiWindowsUnregisterWM_HSCROLLHandler(HWND);
 extern BOOL runWM_COMMAND(WPARAM, LPARAM, LRESULT *);
+extern BOOL runWM_NOTIFY(WPARAM, LPARAM, LRESULT *);
+extern BOOL runWM_HSCROLL(WPARAM, LPARAM, LRESULT *);