iohandler.cc
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上传日期:2015-12-11
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- /*
- * Copyright (c) 1993-1994 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and the Network Research Group at
- * Lawrence Berkeley Laboratory.
- * 4. Neither the name of the University nor of the Laboratory may be used
- * to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
- static const char rcsid[] =
- "@(#) $Header: /cvsroot/otcl-tclcl/tclcl/iohandler.cc,v 1.8 1997/12/25 04:21:40 tecklee Exp $ (LBL)";
- #include "tclcl.h"
- #include "iohandler.h"
- #ifdef WIN32
- #include "tk.h"
- #include <stdlib.h>
- #include <winsock.h>
- #endif
- #ifdef WIN32
- #if TK_MAJOR_VERSION >= 8
- extern "C" HINSTANCE Tk_GetHINSTANCE();
- #else
- extern "C" HINSTANCE TkWinGetAppInstance();
- #define Tk_GetHINSTANCE() TkWinGetAppInstance()
- #endif
- LRESULT CALLBACK
- IOHandler::WSocketHandler(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
- {
- IOHandler* p;
- switch (message) {
- case WM_CREATE:{
- CREATESTRUCT *info = (CREATESTRUCT *) lParam;
- SetWindowLong(hwnd, GWL_USERDATA, (DWORD)info->lpCreateParams);
- return 0;
- }
- case WM_DESTROY:
- return 0;
-
- case WM_WSOCK_READY:
- p = (IOHandler *) GetWindowLong(hwnd, GWL_USERDATA);
- if (p == NULL) {
- fprintf(stderr, "IOHandler: no GWL_USERDATAn");
- }
- else {
- p->dispatch(TK_READABLE);
- return 0;
- }
- break;
- }
- return DefWindowProc(hwnd, message, wParam, lParam);
- }
- #endif
- #ifdef WIN32
- ATOM IOHandler::classAtom_ = 0;
- #endif
- IOHandler::IOHandler() : fd_(-1)
- #ifdef WIN32
- , hwnd_(0)
- #endif
- {
- #ifdef WIN32
- if (0==classAtom_) {
- WNDCLASS cl;
- /*
- * Register the Message window class.
- */
- cl.style = CS_HREDRAW | CS_VREDRAW;
- cl.lpfnWndProc = IOHandler::WSocketHandler;
- cl.cbClsExtra = 0;
- cl.cbWndExtra = 0;
- cl.hInstance = Tk_GetHINSTANCE();
- cl.hIcon = NULL;
- cl.hCursor = NULL;
- cl.hbrBackground = NULL;
- cl.lpszMenuName = NULL;
- cl.lpszClassName = "TclCLWSocket";
- classAtom_ = RegisterClass(&cl);
- if (0==classAtom_) {
- displayErr("register class WSocket");
- }
- }
- #endif
- }
- IOHandler::~IOHandler()
- {
- if (fd_ >= 0)
- unlink();
- }
- void IOHandler::link(int fd, int mask)
- {
- fd_ = fd;
- #ifdef WIN32
- int status;
- int flags = 0;
- if (TK_READABLE & mask)
- flags |= FD_READ;
- if (TK_WRITABLE & mask)
- flags |= FD_WRITE;
- hwnd_ = CreateWindow("TclCLWSocket", "",
- WS_POPUP | WS_CLIPCHILDREN,
- CW_USEDEFAULT, CW_USEDEFAULT, 0, 0,
- NULL,
- NULL, Tk_GetHINSTANCE(), this);
- if (hwnd_ == NULL) {
- displayErr("IOHandler::link() CreateWindow");
- exit(1);
- }
- // ShowWindow(hwnd_, SW_HIDE);
- if ((status = WSAAsyncSelect(fd, hwnd_, WM_WSOCK_READY,
- flags)) > 0) {
- displayErr("IOHandler::link() WSAAsyncSelect");
- exit(1);
- }
- #elif TCL_MAJOR_VERSION >= 8
- Tcl_CreateFileHandler(fd,
- mask, callback, (ClientData)this);
- #else
- Tcl_CreateFileHandler(Tcl_GetFile((ClientData)fd, TCL_UNIX_FD),
- mask, callback, (ClientData)this);
- #endif
- }
- void IOHandler::unlink()
- {
- #ifdef WIN32
- if (fd_ >= 0 && hwnd_ != 0) {
- /* cancel callback */
- (void) WSAAsyncSelect(fd_, hwnd_, 0, 0);
- if (hwnd_) {
- (void) DestroyWindow(hwnd_);
- hwnd_ = 0;
- fd_ = -1;
- }
- }
- #else
- if (fd_ >= 0) {
- #if TCL_MAJOR_VERSION < 8
- Tcl_DeleteFileHandler(Tcl_GetFile((ClientData)fd_,
- TCL_UNIX_FD));
- #else
- Tcl_DeleteFileHandler(fd_);
- #endif
- fd_ = -1;
- }
- #endif
- }
- #ifndef WIN32
- void IOHandler::callback(ClientData cd, int mask)
- {
- IOHandler* p = (IOHandler*)cd;
- p->dispatch(mask);
- }
- #endif