Note: We no longer publish the latest version of our code here. We primarily use a kumc-bmi github organization. The heron ETL repository, in particular, is not public. Peers in the informatics community should see MultiSiteDev for details on requesting access.

source: webrtc/talk/base/win32window.cc @ 0:4bda6873e34c

pub_scrub_3792 tip
Last change on this file since 0:4bda6873e34c was 0:4bda6873e34c, checked in by Michael Prittie <mprittie@…>, 6 years ago

Scrubbed password for publication.

File size: 4.6 KB
Line 
1/*
2 * libjingle
3 * Copyright 2004--2005, Google Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 *  1. Redistributions of source code must retain the above copyright notice,
9 *     this list of conditions and the following disclaimer.
10 *  2. Redistributions in binary form must reproduce the above copyright notice,
11 *     this list of conditions and the following disclaimer in the documentation
12 *     and/or other materials provided with the distribution.
13 *  3. The name of the author may not be used to endorse or promote products
14 *     derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#include "talk/base/common.h"
29#include "talk/base/logging.h"
30#include "talk/base/win32window.h"
31
32namespace talk_base {
33
34///////////////////////////////////////////////////////////////////////////////
35// Win32Window
36///////////////////////////////////////////////////////////////////////////////
37
38static const wchar_t kWindowBaseClassName[] = L"WindowBaseClass";
39HINSTANCE Win32Window::instance_ = NULL;
40ATOM Win32Window::window_class_ = 0;
41
42Win32Window::Win32Window() : wnd_(NULL) {
43}
44
45Win32Window::~Win32Window() {
46  ASSERT(NULL == wnd_);
47}
48
49bool Win32Window::Create(HWND parent, const wchar_t* title, DWORD style,
50                         DWORD exstyle, int x, int y, int cx, int cy) {
51  if (wnd_) {
52    // Window already exists.
53    return false;
54  }
55
56  if (!window_class_) {
57    if (!GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS |
58                           GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
59                           reinterpret_cast<LPCWSTR>(&Win32Window::WndProc),
60                           &instance_)) {
61      LOG_GLE(LS_ERROR) << "GetModuleHandleEx failed";
62      return false;
63    }
64
65    // Class not registered, register it.
66    WNDCLASSEX wcex;
67    memset(&wcex, 0, sizeof(wcex));
68    wcex.cbSize = sizeof(wcex);
69    wcex.hInstance = instance_;
70    wcex.lpfnWndProc = &Win32Window::WndProc;
71    wcex.lpszClassName = kWindowBaseClassName;
72    window_class_ = ::RegisterClassEx(&wcex);
73    if (!window_class_) {
74      LOG_GLE(LS_ERROR) << "RegisterClassEx failed";
75      return false;
76    }
77  }
78  wnd_ = ::CreateWindowEx(exstyle, kWindowBaseClassName, title, style,
79                          x, y, cx, cy, parent, NULL, instance_, this);
80  return (NULL != wnd_);
81}
82
83void Win32Window::Destroy() {
84  VERIFY(::DestroyWindow(wnd_) != FALSE);
85}
86
87void Win32Window::Shutdown() {
88  if (window_class_) {
89    ::UnregisterClass(MAKEINTATOM(window_class_), instance_);
90    window_class_ = 0;
91  }
92}
93
94bool Win32Window::OnMessage(UINT uMsg, WPARAM wParam, LPARAM lParam,
95                            LRESULT& result) {
96  switch (uMsg) {
97  case WM_CLOSE:
98    if (!OnClose()) {
99      result = 0;
100      return true;
101    }
102    break;
103  }
104  return false;
105}
106
107LRESULT Win32Window::WndProc(HWND hwnd, UINT uMsg,
108                             WPARAM wParam, LPARAM lParam) {
109  Win32Window* that = reinterpret_cast<Win32Window*>(
110      ::GetWindowLongPtr(hwnd, GWLP_USERDATA));
111  if (!that && (WM_CREATE == uMsg)) {
112    CREATESTRUCT* cs = reinterpret_cast<CREATESTRUCT*>(lParam);
113    that = static_cast<Win32Window*>(cs->lpCreateParams);
114    that->wnd_ = hwnd;
115    ::SetWindowLongPtr(hwnd, GWLP_USERDATA, reinterpret_cast<LONG_PTR>(that));
116  }
117  if (that) {
118    LRESULT result;
119    bool handled = that->OnMessage(uMsg, wParam, lParam, result);
120    if (WM_DESTROY == uMsg) {
121      for (HWND child = ::GetWindow(hwnd, GW_CHILD); child;
122           child = ::GetWindow(child, GW_HWNDNEXT)) {
123        LOG(LS_INFO) << "Child window: " << static_cast<void*>(child);
124      }
125    }
126    if (WM_NCDESTROY == uMsg) {
127      ::SetWindowLongPtr(hwnd, GWLP_USERDATA, NULL);
128      that->wnd_ = NULL;
129      that->OnNcDestroy();
130    }
131    if (handled) {
132      return result;
133    }
134  }
135  return ::DefWindowProc(hwnd, uMsg, wParam, lParam);
136}
137
138}  // namespace talk_base
Note: See TracBrowser for help on using the repository browser.