BOOL player_impl::subclasswindow(HWND hwnd, BOOL in_process)
{
if (!IsWindow(hwnd))
return FALSE;
if (IsWindow(m_hwnd))
return FALSE;
// 创建非纯黑色的画刷, 用于ddraw播放时刷背景色.
m_brbackground = CreateSolidBrush(RGB(0, 0, 1));
window_pool.add_window(hwnd, this);
m_old_win_proc = (WNDPROC)::SetWindowLongPtr(hwnd, GWLP_WNDPROC, (LONG_PTR)&player_impl::static_win_wnd_proc);
if (!m_old_win_proc)
{
window_pool.remove_window(this);
if (in_process)
return FALSE;
}
m_hwnd = hwnd;
return TRUE;
}
LRESULT CALLBACK player_impl::static_win_wnd_proc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
{
player_impl* this_ptr = window_pool.lookup_window(hwnd);
if (!this_ptr)
{
::logger("Impossible running to here!\n");
assert(0); // 不可能执行到此!!!
return DefWindowProc(hwnd, msg, wparam, lparam);
}
return this_ptr->win_wnd_proc(hwnd, msg, wparam, lparam);
}
LRESULT CALLBACK win_cbt_filter_hook(int code, WPARAM wParam, LPARAM lParam)
{
if (code != HCBT_CREATEWND)
{
return CallNextHookEx(win_tls->hook, code, wParam, lParam);
}
else
{
HWND hwnd = (HWND)wParam;
player_impl *win = win_tls->win;
window_pool.add_window(hwnd, win);
}
return CallNextHookEx(win_tls->hook, code, wParam, lParam);
}
BOOL player_impl::unsubclasswindow(HWND hwnd)
{
if (!IsWindow(m_hwnd) || !IsWindow(hwnd)
|| m_hwnd != hwnd || !m_old_win_proc)
{
return FALSE;
}
// 设置为原来的窗口过程.
::SetWindowLongPtr(hwnd, GWLP_WNDPROC, (LONG_PTR)m_old_win_proc);
window_pool.remove_window(this);
m_hwnd = NULL;
return TRUE;
}
BOOL player_impl::destory_window()
{
if (!IsWindow(m_hwnd))
return FALSE;
BOOL ret = DestroyWindow(m_hwnd);
if (m_brbackground)
{
DeleteObject(m_brbackground);
m_brbackground = NULL;
}
window_pool.remove_window(this);
return ret;
}