mirror of
https://github.com/klzgrad/naiveproxy.git
synced 2024-11-28 16:26:10 +03:00
79 lines
2.4 KiB
C++
79 lines
2.4 KiB
C++
|
// Copyright (c) 2012 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 "base/win/wrapped_window_proc.h"
|
||
|
|
|
||
|
|
#include "base/atomicops.h"
|
||
|
|
#include "base/logging.h"
|
||
|
|
|
||
|
|
namespace {
|
||
|
|
|
||
|
|
base::win::WinProcExceptionFilter s_exception_filter = NULL;
|
||
|
|
|
||
|
|
HMODULE GetModuleFromWndProc(WNDPROC window_proc) {
|
||
|
|
HMODULE instance = NULL;
|
||
|
|
// Converting a pointer-to-function to a void* is undefined behavior, but
|
||
|
|
// Windows (and POSIX) APIs require it to work.
|
||
|
|
void* address = reinterpret_cast<void*>(window_proc);
|
||
|
|
if (!::GetModuleHandleExA(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS |
|
||
|
|
GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
|
||
|
|
static_cast<char*>(address),
|
||
|
|
&instance)) {
|
||
|
|
NOTREACHED();
|
||
|
|
}
|
||
|
|
return instance;
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace.
|
||
|
|
|
||
|
|
namespace base {
|
||
|
|
namespace win {
|
||
|
|
|
||
|
|
WinProcExceptionFilter SetWinProcExceptionFilter(
|
||
|
|
WinProcExceptionFilter filter) {
|
||
|
|
subtle::AtomicWord rv = subtle::NoBarrier_AtomicExchange(
|
||
|
|
reinterpret_cast<subtle::AtomicWord*>(&s_exception_filter),
|
||
|
|
reinterpret_cast<subtle::AtomicWord>(filter));
|
||
|
|
return reinterpret_cast<WinProcExceptionFilter>(rv);
|
||
|
|
}
|
||
|
|
|
||
|
|
int CallExceptionFilter(EXCEPTION_POINTERS* info) {
|
||
|
|
return s_exception_filter ? s_exception_filter(info) :
|
||
|
|
EXCEPTION_CONTINUE_SEARCH;
|
||
|
|
}
|
||
|
|
|
||
|
|
BASE_EXPORT void InitializeWindowClass(
|
||
|
|
const char16* class_name,
|
||
|
|
WNDPROC window_proc,
|
||
|
|
UINT style,
|
||
|
|
int class_extra,
|
||
|
|
int window_extra,
|
||
|
|
HCURSOR cursor,
|
||
|
|
HBRUSH background,
|
||
|
|
const char16* menu_name,
|
||
|
|
HICON large_icon,
|
||
|
|
HICON small_icon,
|
||
|
|
WNDCLASSEX* class_out) {
|
||
|
|
class_out->cbSize = sizeof(WNDCLASSEX);
|
||
|
|
class_out->style = style;
|
||
|
|
class_out->lpfnWndProc = window_proc;
|
||
|
|
class_out->cbClsExtra = class_extra;
|
||
|
|
class_out->cbWndExtra = window_extra;
|
||
|
|
// RegisterClassEx uses a handle of the module containing the window procedure
|
||
|
|
// to distinguish identically named classes registered in different modules.
|
||
|
|
class_out->hInstance = GetModuleFromWndProc(window_proc);
|
||
|
|
class_out->hIcon = large_icon;
|
||
|
|
class_out->hCursor = cursor;
|
||
|
|
class_out->hbrBackground = background;
|
||
|
|
class_out->lpszMenuName = menu_name;
|
||
|
|
class_out->lpszClassName = class_name;
|
||
|
|
class_out->hIconSm = small_icon;
|
||
|
|
|
||
|
|
// Check if |window_proc| is valid.
|
||
|
|
DCHECK(class_out->hInstance != NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace win
|
||
|
|
} // namespace base
|