[PSDK][REACTOS] Fix definitions and usage of DWLP_MSGRESULT, DWLP_DLGPROC, and DWLP_USER

- Make sure the DWLP_* values are correct on _WIN64
- Don't use the DWL_* constants, they are not portable. Enforce this by removing them entirely from winuser.h
- Make sure Get/SetWindowLong*Ptr* is used and pointers are not truncated to LONG

modules/rosapps/lib/vfdlib/vfdlib.h

@@ -10,6 +10,10 @@
 #ifndef _VFDLIB_H_
 #define _VFDLIB_H_
 
+#ifdef __REACTOS__
+#define DWL_USER DWLP_USER
+#endif
+
 #define VFD_LIBRARY_FILENAME	"vfd.dll"
 
 #ifdef VFD_EMBED_DRIVER

modules/rosapps/lib/vfdlib/vfdshprop.cpp

@@ -35,7 +35,11 @@
 //
 //	local functions
 //
+#ifndef __REACTOS__
 static BOOL CALLBACK VfdPageDlgProc(
+#else
+static INT_PTR CALLBACK VfdPageDlgProc(
+#endif
 	HWND			hDlg,
 	UINT			uMessage,
 	WPARAM			wParam,
@@ -76,7 +80,11 @@ UINT CALLBACK VfdPageCallback(
 //
 //	property page dialog procedure
 //
+#ifndef __REACTOS__
 BOOL CALLBACK VfdPageDlgProc(
+#else
+INT_PTR CALLBACK VfdPageDlgProc(
+#endif
 	HWND			hDlg,
 	UINT			uMessage,
 	WPARAM			wParam,
@@ -87,7 +95,11 @@ BOOL CALLBACK VfdPageDlgProc(
 
 	switch (uMessage) {
 	case WM_INITDIALOG:
+#ifndef __REACTOS__
 		SetWindowLong(hDlg, DWL_USER, lParam);
+#else
+		SetWindowLongPtr(hDlg, DWLP_USER, lParam);
+#endif
 
 		if (lParam) {
 			lpcs = (LPCVFDSHEXT)((LPPROPSHEETPAGE)lParam)->lParam;
@@ -98,7 +110,11 @@ BOOL CALLBACK VfdPageDlgProc(
 		return TRUE;
 
 	case WM_COMMAND:
+#ifndef __REACTOS__
 		psp = (LPPROPSHEETPAGE)GetWindowLong(hDlg, DWL_USER);
+#else
+		psp = (LPPROPSHEETPAGE)GetWindowLongPtr(hDlg, DWLP_USER);
+#endif
 
 		if (!psp) {
 			break;
@@ -165,7 +181,11 @@ BOOL CALLBACK VfdPageDlgProc(
 
 	default:
 		if (uMessage == g_nNotifyMsg) {
+#ifndef __REACTOS__
 			psp = (LPPROPSHEETPAGE)GetWindowLong(hDlg, DWL_USER);
+#else
+			psp = (LPPROPSHEETPAGE)GetWindowLongPtr(hDlg, DWLP_USER);
+#endif
 
 			if (!psp) {
 				break;