Add message's spy into user32.dll. In order to enable, just uncomment #define YDEBUG in spy.c file and optionally set the messages you want to include / exclude in the registry (HKCU\ReactOS\Debug).

When it's turned off (YDEBUG is not defined), it doesn't provide any slow-down to the system.

DefWindowProc() functions are slightly refactored to have one exit point instead of numerous returns in a switch-case statement.

FIXME: maybe DPRINTs will be changed to DbgPrint because it's pointless to display path to the spy.c file everytime.

svn path=/trunk/; revision=23330

reactos/boot/bootdata/hivedef.inf

@@ -84,6 +84,11 @@ HKCU,"SOFTWARE\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers\WINXP",
 HKCU,"SOFTWARE\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers\WINXP","SPMajorVersion",0x00010001,0x00000001
 HKCU,"SOFTWARE\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers\WINXP","SPMinorVersion",0x00010001,0x00000000
 
+; DEBUG: Windows Messages SPY configuration
+HKCU,"SOFTWARE\ReactOS\Debug","SpyInclude",0x00020000,"INCLUDEALL"
+;HKCU,"SOFTWARE\ReactOS\Debug","SpyExclude",0x00020000,""
+;HKCU,"SOFTWARE\ReactOS\Debug","SpyExcludeDWP",0x00020000,""
+
 ; GUI Setup
 
 HKCU, "Control Panel\Desktop\WindowMetrics","CaptionFont",0x00000001,f5,ff,ff,ff,00,00,00,\

reactos/dll/win32/user32/controls/combo.c

@@ -1867,8 +1867,8 @@ static LRESULT ComboWndProc_common( HWND hwnd, UINT message,
 {
       LPHEADCOMBO lphc = (LPHEADCOMBO)GetWindowLongPtrW( hwnd, 0 );
 
-      //TRACE("[%p]: msg %s wp %08x lp %08lx\n",
+      TRACE("[%p]: msg %s wp %08x lp %08lx\n",
-      //      hwnd, SPY_GetMsgName(message, hwnd), wParam, lParam );
+            hwnd, SPY_GetMsgName(message, hwnd), wParam, lParam );
 
       if( lphc || message == WM_NCCREATE )
       switch(message)

reactos/dll/win32/user32/controls/edit.c

@@ -445,7 +445,7 @@ static LRESULT WINAPI EditWndProc_common( HWND hwnd, UINT msg,
 	EDITSTATE *es = (EDITSTATE *)GetWindowLongPtrW( hwnd, 0 );
 	LRESULT result = 0;
 
-        //TRACE("hwnd=%p msg=%x (%s) wparam=%x lparam=%lx\n", hwnd, msg, SPY_GetMsgName(msg, hwnd), wParam, lParam);
+    TRACE("hwnd=%p msg=%x (%s) wparam=%x lparam=%lx\n", hwnd, msg, SPY_GetMsgName(msg, hwnd), wParam, lParam);
 
 	if (!es && msg != WM_NCCREATE)
 		return DefWindowProcT(hwnd, msg, wParam, lParam, unicode);
@@ -1108,7 +1108,7 @@ static LRESULT WINAPI EditWndProc_common( HWND hwnd, UINT msg,
 
 	if (es) EDIT_UnlockBuffer(es, FALSE);
 
-        //TRACE("hwnd=%p msg=%x (%s) -- 0x%08lx\n", hwnd, msg, SPY_GetMsgName(msg, hwnd), result);
+    TRACE("hwnd=%p msg=%x (%s) -- 0x%08lx\n", hwnd, msg, SPY_GetMsgName(msg, hwnd), result);
 
 	return result;
 }

reactos/dll/win32/user32/controls/listbox.c

@@ -2634,8 +2634,8 @@ static LRESULT WINAPI ListBoxWndProc_common( HWND hwnd, UINT msg,
     }
     if (descr->style & LBS_COMBOBOX) lphc = descr->lphc;
 
-    //TRACE("[%p]: msg %s wp %08x lp %08lx\n",
+    TRACE("[%p]: msg %s wp %08x lp %08lx\n",
-      //    hwnd, SPY_GetMsgName(msg, hwnd), wParam, lParam );
+          hwnd, SPY_GetMsgName(msg, hwnd), wParam, lParam );
     switch(msg)
     {
 #ifndef __REACTOS__

reactos/dll/win32/user32/include/user32p.h

@@ -137,5 +137,22 @@ BOOL STDCALL GdiDllInitialize(HANDLE, DWORD, LPVOID);
 void InitStockObjects(void);
 VOID DeleteFrameBrushes(VOID);
 
+/* message spy definitions */
+#define SPY_DISPATCHMESSAGE       0x0101
+#define SPY_SENDMESSAGE           0x0103
+#define SPY_DEFWNDPROC            0x0105
+
+#define SPY_RESULT_OK             0x0001
+#define SPY_RESULT_INVALIDHWND    0x0003
+#define SPY_RESULT_DEFWND         0x0005
+
+extern const char *SPY_GetMsgName(UINT msg, HWND hWnd);
+extern const char *SPY_GetVKeyName(WPARAM wParam);
+extern void SPY_EnterMessage(INT iFlag, HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam);
+extern void SPY_ExitMessage(INT iFlag, HWND hwnd, UINT msg,
+                            LRESULT lReturn, WPARAM wParam, LPARAM lParam);
+extern int SPY_Init(void);
+
+
 #endif
 /* EOF */

reactos/dll/win32/user32/misc/dllmain.c

@@ -101,6 +101,10 @@ DllMain(
             Cleanup();
             return FALSE;
          }
+     
+         /* Initialize message spying */
+        if (!SPY_Init()) return FALSE;
+
          break;
 
       case DLL_THREAD_ATTACH:

reactos/dll/win32/user32/user32.rbuild

@@ -71,6 +71,7 @@
 		<file>paint.c</file>
 		<file>prop.c</file>
 		<file>rect.c</file>
+		<file>spy.c</file>
 		<file>text.c</file>
 		<file>window.c</file>
 		<file>winpos.c</file>

reactos/dll/win32/user32/windows/defwnd.c

@@ -1538,6 +1538,9 @@ DefWindowProcA(HWND hWnd,
 	       WPARAM wParam,
 	       LPARAM lParam)
 {
+    LRESULT Result = 0;
+
+    SPY_EnterMessage(SPY_DEFWNDPROC, hWnd, Msg, wParam, lParam);
     switch (Msg)
     {
         case WM_NCCREATE:
@@ -1558,12 +1561,14 @@ DefWindowProcA(HWND hWnd,
             else
               NtUserDefSetText(hWnd, NULL);
 
-            return (1);
+            Result = 1;
+            break;
         }
 
         case WM_GETTEXTLENGTH:
         {
-            return (LRESULT)NtUserInternalGetWindowText(hWnd, NULL, 0);
+            Result = (LRESULT)NtUserInternalGetWindowText(hWnd, NULL, 0);
+            break;
         }
 
         case WM_GETTEXT:
@@ -1574,7 +1579,10 @@ DefWindowProcA(HWND hWnd,
 
             Buffer = HeapAlloc(GetProcessHeap(), 0, wParam * sizeof(WCHAR));
             if (!Buffer)
-                return FALSE;
+            {
+                Result = 0;
+                break;
+            }
             Length = NtUserInternalGetWindowText(hWnd, Buffer, wParam);
             if (Length > 0 && wParam > 0 &&
                 !WideCharToMultiByte(CP_ACP, 0, Buffer, -1,
@@ -1585,7 +1593,8 @@ DefWindowProcA(HWND hWnd,
 
             HeapFree(GetProcessHeap(), 0, Buffer);
 
-            return (LRESULT)Length;
+            Result = (LRESULT)Length;
+            break;
         }
 
         case WM_SETTEXT:
@@ -1607,11 +1616,12 @@ DefWindowProcA(HWND hWnd,
             {
                 DefWndNCPaint(hWnd, (HRGN)1, -1);
             }
-            return TRUE;
+
+            Result = 1;
+            break;
         }
 
-/*
+/*      FIXME: Implement these. */
-        FIXME: Implement these.
         case WM_IME_CHAR:
         case WM_IME_KEYDOWN:
         case WM_IME_KEYUP:
@@ -1620,10 +1630,14 @@ DefWindowProcA(HWND hWnd,
         case WM_IME_ENDCOMPOSITION:
         case WM_IME_SELECT:
         case WM_IME_SETCONTEXT:
-*/
+            DPRINT1("FIXME: WM_IME_* conversion isn't implemented yet!");
+        /* fall through */
+        default:
+            Result = User32DefWindowProc(hWnd, Msg, wParam, lParam, FALSE);
     }
 
-    return User32DefWindowProc(hWnd, Msg, wParam, lParam, FALSE);
+    SPY_ExitMessage(SPY_RESULT_DEFWND, hWnd, Msg, Result, wParam, lParam);
+    return Result;
 }
 
 
@@ -1633,6 +1647,9 @@ DefWindowProcW(HWND hWnd,
 	       WPARAM wParam,
 	       LPARAM lParam)
 {
+    LRESULT Result = 0;
+
+    SPY_EnterMessage(SPY_DEFWNDPROC, hWnd, Msg, wParam, lParam);
     switch (Msg)
     {
         case WM_NCCREATE:
@@ -1646,17 +1663,20 @@ DefWindowProcW(HWND hWnd,
               RtlInitUnicodeString(&UnicodeString, (LPWSTR)cs->lpszName);
 
             NtUserDefSetText( hWnd, (cs->lpszName ? &UnicodeString : NULL));
-            return (1);
+            Result = 1;
+            break;
         }
 
         case WM_GETTEXTLENGTH:
         {
-            return (LRESULT)NtUserInternalGetWindowText(hWnd, NULL, 0);
+            Result = (LRESULT)NtUserInternalGetWindowText(hWnd, NULL, 0);
+            break;
         }
 
         case WM_GETTEXT:
         {
-            return (LRESULT)NtUserInternalGetWindowText(hWnd, (PWSTR)lParam, wParam);
+            Result = (LRESULT)NtUserInternalGetWindowText(hWnd, (PWSTR)lParam, wParam);
+            break;
         }
 
         case WM_SETTEXT:
@@ -1672,22 +1692,30 @@ DefWindowProcW(HWND hWnd,
             {
                 DefWndNCPaint(hWnd, (HRGN)1, -1);
             }
-            return (1);
+            Result = 1;
+            break;
         }
 
         case WM_IME_CHAR:
         {
             SendMessageW(hWnd, WM_CHAR, wParam, lParam);
-            return (0);
+            Result = 0;
+            break;
         }
 
         case WM_IME_SETCONTEXT:
         {
             /* FIXME */
-            return (0);
+            DPRINT1("FIXME: WM_IME_SETCONTEXT is not implemented!");
-        }
+            Result = 0;
+            break;
         }
 
-    return User32DefWindowProc(hWnd, Msg, wParam, lParam, TRUE);
+        default:
+            Result = User32DefWindowProc(hWnd, Msg, wParam, lParam, TRUE);
+    }
+    SPY_ExitMessage(SPY_RESULT_DEFWND, hWnd, Msg, Result, wParam, lParam);
+
+    return Result;
 }
 

reactos/dll/win32/user32/windows/mdi.c

@@ -1050,7 +1050,7 @@ static LRESULT MDIClientWndProc_common( HWND hwnd, UINT message,
 {
     MDICLIENTINFO *ci = NULL;
 
-//    TRACE("%p %04x (%s) %08x %08lx\n", hwnd, message, SPY_GetMsgName(message, hwnd), wParam, lParam);
+    TRACE("%p %04x (%s) %08x %08lx\n", hwnd, message, SPY_GetMsgName(message, hwnd), wParam, lParam);
 
     if (WM_NCCREATE != message && NULL == (ci = get_client_info(hwnd)))
     {
@@ -1368,7 +1368,7 @@ LRESULT WINAPI DefFrameProcW( HWND hwnd, HWND hwndMDIClient,
 {
     MDICLIENTINFO *ci = get_client_info( hwndMDIClient );
 
-//    TRACE("%p %p %04x (%s) %08x %08lx\n", hwnd, hwndMDIClient, message, SPY_GetMsgName(message, hwnd), wParam, lParam);
+    TRACE("%p %p %04x (%s) %08x %08lx\n", hwnd, hwndMDIClient, message, SPY_GetMsgName(message, hwnd), wParam, lParam);
 
     if (ci)
     {
@@ -1466,7 +1466,7 @@ LRESULT WINAPI DefMDIChildProcA( HWND hwnd, UINT message,
     HWND client = GetParent(hwnd);
     MDICLIENTINFO *ci = get_client_info( client );
 
-//    TRACE("%p %04x (%s) %08x %08lx\n", hwnd, message, SPY_GetMsgName(message, hwnd), wParam, lParam);
+    TRACE("%p %04x (%s) %08x %08lx\n", hwnd, message, SPY_GetMsgName(message, hwnd), wParam, lParam);
 #ifndef __REACTOS__
     hwnd = WIN_GetFullHandle( hwnd );
 #endif
@@ -1509,7 +1509,7 @@ LRESULT WINAPI DefMDIChildProcW( HWND hwnd, UINT message,
     HWND client = GetParent(hwnd);
     MDICLIENTINFO *ci = get_client_info( client );
 
-//    TRACE("%p %04x (%s) %08x %08lx\n", hwnd, message, SPY_GetMsgName(message, hwnd), wParam, lParam);
+    TRACE("%p %04x (%s) %08x %08lx\n", hwnd, message, SPY_GetMsgName(message, hwnd), wParam, lParam);
 #ifndef __REACTOS__
     hwnd = WIN_GetFullHandle( hwnd );
 #endif    

reactos/dll/win32/user32/windows/message.c

@@ -1297,8 +1297,12 @@ DispatchMessageA(CONST MSG *lpmsg)
   if (! Info.HandledByKernel)
     {
       /* We need to send the message ourselves */
+      SPY_EnterMessage(SPY_DISPATCHMESSAGE, Info.Msg.hwnd, Info.Msg.message,
+                       Info.Msg.wParam, Info.Msg.lParam);
       Result = IntCallWindowProcA(Info.Ansi, Info.Proc, Info.Msg.hwnd,
                                   Info.Msg.message, Info.Msg.wParam, Info.Msg.lParam);
+      SPY_ExitMessage(SPY_RESULT_OK, Info.Msg.hwnd, Info.Msg.message, Result,
+                      Info.Msg.wParam, Info.Msg.lParam);
     }
   MsgConversionCleanup(lpmsg, TRUE, TRUE, &Result);
 
@@ -1321,8 +1325,12 @@ DispatchMessageW(CONST MSG *lpmsg)
   if (! Info.HandledByKernel)
     {
       /* We need to send the message ourselves */
+      SPY_EnterMessage(SPY_DISPATCHMESSAGE, Info.Msg.hwnd, Info.Msg.message,
+                       Info.Msg.wParam, Info.Msg.lParam);
       Result = IntCallWindowProcW(Info.Ansi, Info.Proc, Info.Msg.hwnd,
                                   Info.Msg.message, Info.Msg.wParam, Info.Msg.lParam);
+      SPY_ExitMessage(SPY_RESULT_OK, Info.Msg.hwnd, Info.Msg.message, Result,
+                      Info.Msg.wParam, Info.Msg.lParam);
     }
   MsgConversionCleanup(lpmsg, FALSE, TRUE, &Result);
 
@@ -1791,12 +1799,15 @@ SendMessageTimeoutA(
       return FALSE;
     }
 
+  SPY_EnterMessage(SPY_SENDMESSAGE, hWnd, Msg, wParam, lParam);
+
   Info.Ansi = TRUE;
   Result = NtUserSendMessageTimeout(UcMsg.hwnd, UcMsg.message,
                                     UcMsg.wParam, UcMsg.lParam,
                                     fuFlags, uTimeout, (ULONG_PTR*)lpdwResult, &Info);
   if(!Result)
   {
+      SPY_ExitMessage(SPY_RESULT_OK, hWnd, Msg, Result, wParam, lParam);
       return FALSE;
   }
   if (! Info.HandledByKernel)
@@ -1818,6 +1829,7 @@ SendMessageTimeoutA(
                                       UcMsg.message, UcMsg.wParam, UcMsg.lParam);
           if (! MsgiAnsiToUnicodeReply(&UcMsg, &AnsiMsg, &Result))
             {
+                SPY_ExitMessage(SPY_RESULT_OK, hWnd, Msg, Result, wParam, lParam);
                 return FALSE;
             }
         }
@@ -1830,10 +1842,12 @@ SendMessageTimeoutA(
       /* Message sent by kernel. Convert back to Ansi */
       if (! MsgiAnsiToUnicodeReply(&UcMsg, &AnsiMsg, &Result))
         {
+            SPY_ExitMessage(SPY_RESULT_OK, hWnd, Msg, Result, wParam, lParam);
             return FALSE;
         }
     }
 
+  SPY_ExitMessage(SPY_RESULT_OK, hWnd, Msg, Result, wParam, lParam);
   return Result;
 }
 
@@ -1855,6 +1869,8 @@ SendMessageTimeoutW(
   NTUSERSENDMESSAGEINFO Info;
   LRESULT Result;
 
+  SPY_EnterMessage(SPY_SENDMESSAGE, hWnd, Msg, wParam, lParam);
+
   Info.Ansi = FALSE;
   Result = NtUserSendMessageTimeout(hWnd, Msg, wParam, lParam, fuFlags, uTimeout,
                                     lpdwResult, &Info);
@@ -1864,9 +1880,12 @@ SendMessageTimeoutW(
       Result = IntCallWindowProcW(Info.Ansi, Info.Proc, hWnd, Msg, wParam, lParam);
       if(lpdwResult)
         *lpdwResult = Result;
+
+      SPY_ExitMessage(SPY_RESULT_OK, hWnd, Msg, Result, wParam, lParam);
       return TRUE;
     }
 
+  SPY_ExitMessage(SPY_RESULT_OK, hWnd, Msg, Result, wParam, lParam);
   return Result;
 }