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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/system_message_window_win.h"
#include <windows.h>
#include <dbt.h>
#include "base/system_monitor/system_monitor.h"
#include "base/win/wrapped_window_proc.h"
static const wchar_t* const WindowClassName = L"Chrome_SystemMessageWindow";
SystemMessageWindowWin::SystemMessageWindowWin() {
HINSTANCE hinst = GetModuleHandle(NULL);
WNDCLASSEX wc = {0};
wc.cbSize = sizeof(wc);
wc.lpfnWndProc =
base::win::WrappedWindowProc<&SystemMessageWindowWin::WndProcThunk>;
wc.hInstance = hinst;
wc.lpszClassName = WindowClassName;
ATOM clazz = RegisterClassEx(&wc);
DCHECK(clazz);
window_ = CreateWindow(WindowClassName,
0, 0, 0, 0, 0, 0, 0, 0, hinst, 0);
SetWindowLongPtr(window_, GWLP_USERDATA, reinterpret_cast<LONG_PTR>(this));
}
SystemMessageWindowWin::~SystemMessageWindowWin() {
if (window_) {
DestroyWindow(window_);
UnregisterClass(WindowClassName, GetModuleHandle(NULL));
}
}
LRESULT SystemMessageWindowWin::OnDeviceChange(UINT event_type, DWORD data) {
base::SystemMonitor* monitor = base::SystemMonitor::Get();
if (monitor && event_type == DBT_DEVNODES_CHANGED)
monitor->ProcessDevicesChanged();
return TRUE;
}
LRESULT CALLBACK SystemMessageWindowWin::WndProc(HWND hwnd, UINT message,
WPARAM wparam, LPARAM lparam) {
switch (message) {
case WM_DEVICECHANGE:
return OnDeviceChange(static_cast<UINT>(wparam),
static_cast<DWORD>(lparam));
default:
break;
}
return ::DefWindowProc(hwnd, message, wparam, lparam);
}
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