diff --git a/docs/rh-log.txt b/docs/rh-log.txt
index 25043a4f5..12e3bfdef 100644
--- a/docs/rh-log.txt
+++ b/docs/rh-log.txt
@@ -1,4 +1,5 @@
 February 7, 2009
+- Added GUICapture mouse events for Win32.
 - Changed I_GetFromClipboard() to return an FString.
 - Added GTK+-based clipboard support for Linux.
 - Fixed: Most Linux filesystems do not fill in d_type for scandir(), so we
diff --git a/src/ct_chat.cpp b/src/ct_chat.cpp
index 40a7e8757..9f9d7c603 100644
--- a/src/ct_chat.cpp
+++ b/src/ct_chat.cpp
@@ -38,6 +38,8 @@
 #define HU_INPUTX		0
 #define HU_INPUTY		(0 + (screen->Font->GetHeight () + 1))
 
+void CT_PasteChat(const char *clip);
+
 EXTERN_CVAR (Int, con_scaletext)
 
 EXTERN_CVAR (Bool, sb_cooperative_enable)
@@ -150,20 +152,7 @@ bool CT_Responder (event_t *ev)
 			}
 			else if (ev->data1 == 'V' && (ev->data3 & GKM_CTRL))
 			{
-				FString clip = I_GetFromClipboard ();
-				if (clip.IsNotEmpty())
-				{
-					// Only paste the first line.
-					const char *clip_p = clip;
-					while (*clip_p)
-					{
-						if (*clip_p == '\n' || *clip_p == '\r' || *clip_p == '\b')
-						{
-							break;
-						}
-						CT_AddChar (*clip_p++);
-					}
-				}
+				CT_PasteChat(I_GetFromClipboard());
 			}
 		}
 		else if (ev->subtype == EV_GUI_Char)
@@ -180,11 +169,37 @@ bool CT_Responder (event_t *ev)
 			}
 			return true;
 		}
+		else if (ev->subtype == EV_GUI_MButtonDown)
+		{
+			CT_PasteChat(I_GetFromClipboard());
+		}
 	}
 
 	return false;
 }
 
+//===========================================================================
+//
+// CT_PasteChat
+//
+//===========================================================================
+
+void CT_PasteChat(const char *clip)
+{
+	if (clip != NULL)
+	{
+		// Only paste the first line.
+		while (*clip != '\0')
+		{
+			if (*clip == '\n' || *clip == '\r' || *clip == '\b')
+			{
+				break;
+			}
+			CT_AddChar (*clip++);
+		}
+	}
+}
+
 //===========================================================================
 //
 // CT_Drawer
diff --git a/src/win32/i_input.cpp b/src/win32/i_input.cpp
index 294e76bd4..c93f5e45d 100644
--- a/src/win32/i_input.cpp
+++ b/src/win32/i_input.cpp
@@ -699,6 +699,23 @@ LRESULT CALLBACK WndProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 			DIKState[ActiveDIKState][event.data1] = (event.type == EV_KeyDown);
 			D_PostEvent (&event);
 		}
+		else if (GUICapture)
+		{
+			event.type = EV_GUI_Event;
+			if (message >= WM_LBUTTONDOWN && message <= WM_LBUTTONDBLCLK)
+			{
+				event.subtype = message - WM_LBUTTONDOWN + EV_GUI_LButtonDown;
+			}
+			else if (message >= WM_RBUTTONDOWN && message <= WM_RBUTTONDBLCLK)
+			{
+				event.subtype = message - WM_RBUTTONDOWN + EV_GUI_RButtonDown;
+			}
+			else if (message >= WM_MBUTTONDOWN && message <= WM_MBUTTONDBLCLK)
+			{
+				event.subtype = message - WM_MBUTTONDOWN + EV_GUI_MButtonDown;
+			}
+			D_PostEvent (&event);
+		}
 		break;
 
 	case WM_XBUTTONDOWN: