In the windows debugger log window add a Log/Clear menu to remove all logged messages (nw)

scripts/src/osd/windows.lua

@@ -191,6 +191,8 @@ project ("osd_" .. _OPTIONS["osd"])
 		MAME_DIR .. "src/osd/modules/debugger/win/editwininfo.h",
 		MAME_DIR .. "src/osd/modules/debugger/win/logwininfo.cpp",
 		MAME_DIR .. "src/osd/modules/debugger/win/logwininfo.h",
+		MAME_DIR .. "src/osd/modules/debugger/win/logviewinfo.cpp",
+		MAME_DIR .. "src/osd/modules/debugger/win/logviewinfo.h",
 		MAME_DIR .. "src/osd/modules/debugger/win/memoryviewinfo.cpp",
 		MAME_DIR .. "src/osd/modules/debugger/win/memoryviewinfo.h",
 		MAME_DIR .. "src/osd/modules/debugger/win/memorywininfo.cpp",

src/emu/debug/dvtext.cpp

@@ -40,6 +40,20 @@ debug_view_textbuf::~debug_view_textbuf()
 }
 
 
+//-------------------------------------------------
+//  clear - clear the contents
+//-------------------------------------------------
+
+void debug_view_textbuf::clear()
+{
+	begin_update();
+	text_buffer_clear(&m_textbuf);
+	m_at_bottom = true;
+	m_topseq = 0;
+	end_update();
+}
+
+
 //-------------------------------------------------
 //  view_update - update a text buffer-based view
 //-------------------------------------------------

src/emu/debug/dvtext.h

@@ -26,6 +26,9 @@ class debug_view_textbuf : public debug_view
 {
 	friend class debug_view_manager;
 
+public:
+	void clear();
+
 protected:
 	// construction/destruction
 	debug_view_textbuf(running_machine &machine, debug_view_type type, debug_view_osd_update_func osdupdate, void *osdprivate, text_buffer &textbuf);

src/osd/modules/debugger/win/logviewinfo.cpp

@@ -0,0 +1,29 @@
+// license:BSD-3-Clause
+// copyright-holders:Samuele Zannoli
+//============================================================
+//
+//  logviewinfo.c - Win32 debug log window handling
+//
+//============================================================
+
+#include "emu.h"
+#include "logviewinfo.h"
+
+#include "debug/dvtext.h"
+
+
+logview_info::logview_info(debugger_windows_interface &debugger, debugwin_info &owner, HWND parent) :
+	debugview_info(debugger, owner, parent, DVT_LOG)
+{
+}
+
+
+logview_info::~logview_info()
+{
+}
+
+
+void logview_info::clear()
+{
+	view<debug_view_log>()->clear();
+}

src/osd/modules/debugger/win/logviewinfo.h

@@ -0,0 +1,26 @@
+// license:BSD-3-Clause
+// copyright-holders:Samuele Zannoli
+//============================================================
+//
+//  logviewinfo.h - Win32 debug log window handling
+//
+//============================================================
+
+#ifndef __DEBUG_WIN_LOG_VIEW_INFO_H__
+#define __DEBUG_WIN_LOG_VIEW_INFO_H__
+
+#include "debugwin.h"
+
+#include "debugviewinfo.h"
+
+
+class logview_info : public debugview_info
+{
+public:
+	logview_info(debugger_windows_interface &debugger, debugwin_info &owner, HWND parent);
+	virtual ~logview_info();
+
+	void clear();
+};
+
+#endif

src/osd/modules/debugger/win/logwininfo.cpp

@@ -10,6 +10,7 @@
 #include "logwininfo.h"
 
 #include "debugviewinfo.h"
+#include "logviewinfo.h"
 
 
 logwin_info::logwin_info(debugger_windows_interface &debugger) :
@@ -18,13 +19,18 @@ logwin_info::logwin_info(debugger_windows_interface &debugger) :
 	if (!window())
 		return;
 
-	m_views[0].reset(global_alloc(debugview_info(debugger, *this, window(), DVT_LOG)));
+	m_views[0].reset(global_alloc(logview_info(debugger, *this, window())));
 	if ((m_views[0] == nullptr) || !m_views[0]->is_valid())
 	{
 		m_views[0].reset();
 		return;
 	}
 
+	// create the log menu
+	HMENU const logmenu = CreatePopupMenu();
+	AppendMenu(logmenu, MF_ENABLED, ID_CLEAR_LOG, TEXT("Clear"));
+	AppendMenu(GetMenu(window()), MF_ENABLED | MF_POPUP, (UINT_PTR)logmenu, TEXT("Log"));
+
 	// compute a client rect
 	RECT bounds;
 	bounds.top = bounds.left = 0;
@@ -46,3 +52,14 @@ logwin_info::logwin_info(debugger_windows_interface &debugger) :
 logwin_info::~logwin_info()
 {
 }
+
+bool logwin_info::handle_command(WPARAM wparam, LPARAM lparam)
+{
+	if ((HIWORD(wparam) == 0) && (LOWORD(wparam) == ID_CLEAR_LOG))
+	{
+		downcast<logview_info *>(m_views[0].get())->clear();
+		machine().debug_view().update_all(DVT_LOG);
+		return true;
+	}
+	return debugwin_info::handle_command(wparam, lparam);
+}

src/osd/modules/debugger/win/logwininfo.h

@@ -19,6 +19,13 @@ class logwin_info : public debugwin_info
 public:
 	logwin_info(debugger_windows_interface &debugger);
 	virtual ~logwin_info();
+
+protected:
+	enum
+	{
+		ID_CLEAR_LOG = 1
+	};
+	virtual bool handle_command(WPARAM wparam, LPARAM lparam) override;
 };
 
 #endif