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Hey there wonderful community!
I'm back with a question regarding a console server application I've made with winsock. It's finally reaching a stage where I would need a to add a GUI, and to do so, I need it to be using the Windows subsystem.
And so I started the migration.
Yet I'm hitting a stack overflow somewhere in my application, and for the life of me I can't figure out where. Perhaps it has to do with WIN being a non-blocking subsystem (hope I used my vocab correctly).
Anyway, I hope to enlist you all as helpers. Many thanks :)
#undef UNICODE
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <winsock2.h>
#include <ws2tcpip.h>
#include <stdlib.h>
#include <stdio.h>
#include <iostream>
#include <string>
#include <conio.h>
// Need to link with Ws2_32.lib
#pragma comment (lib, "Ws2_32.lib")
// #pragma comment (lib, "Mswsock.lib")
int minitialize();
int msend(char msendbuf[512]);
char* mrecv(bool show);
int mshutdown();
void GoToXY(int column, int line);
int scroll(void);
int printm(char *inp);
int printm(char *inp, DWORD color);
int mexit();
char *vir = "true";
int clientnumber=0;
int currentclient=0;
int lastclient=0;
#define DEFAULT_BUFLEN 512
#define DEFAULT_PORT "10150"
struct _client
{
bool con;
sockaddr_in addr; //Client info like ip address
SOCKET cs; //Client socket
fd_set set; //used to check if there is data in the socket
std::string ip;
std::string name;
int i; //any piece of additional info
} client[100];
WSADATA wsaData;
int iResult;
SOCKET ListenSocket = INVALID_SOCKET;
SOCKET ClientSocket = INVALID_SOCKET;
struct addrinfo *result = NULL;
struct addrinfo hints;
int iSendResult;
char recvbuf[DEFAULT_BUFLEN];
int recvbuflen = DEFAULT_BUFLEN;
DWORD WINAPI recvfunc(LPVOID randparam)
{
while (true) {
ClientSocket=client[currentclient].cs;
if (mrecv(true)=="1") {
client[currentclient].con=false;
ClientSocket=client[lastclient].cs;
break;
}
}
return 0;
}
DWORD WINAPI headerfunc(LPVOID randparam)
{
Sleep(500);
while (true) {
CONSOLE_SCREEN_BUFFER_INFO SBInfo;
HANDLE hOut = GetStdHandle(STD_OUTPUT_HANDLE);
GetConsoleScreenBufferInfo(hOut, &SBInfo);
int xx = SBInfo.dwCursorPosition.X;
int yy = SBInfo.dwCursorPosition.Y;
GoToXY(0,0);
HANDLE hHeaderColor;
hHeaderColor = GetStdHandle(STD_OUTPUT_HANDLE);
SetConsoleTextAttribute(hHeaderColor, FOREGROUND_GREEN);
std::cout<<"Server Started. Current Client:"<<currentclient<<" Clients connected: "<<clientnumber<<" ("<<xx<<","<<yy<<") "<<lastclient;
SetConsoleTextAttribute(hHeaderColor, 0 |
FOREGROUND_RED |
FOREGROUND_GREEN |
FOREGROUND_BLUE);
GoToXY(xx,yy);
Sleep(2000);
}
return 0;
}
DWORD WINAPI sendfunc(LPVOID randparam)
{
while (true) {
char mmessage[512];
std::cin.getline(mmessage, 512);
if (strlen(mmessage)<2) {
GoToXY(0,23);
sendfunc("1");
}
char msendbuf[512]="Server> ";
strcat(msendbuf,mmessage);
if (msend(msendbuf)==1) {
"Client must have disconnected. Please select a new client.";
sendfunc("1");
}
if ((strncmp(msendbuf,"Server> /",9)) != 0) {
printm(msendbuf,FOREGROUND_INTENSITY);
}
GoToXY(0,23);
for (int sp=0; sp<72; sp++) {
std::cout<<" ";
}
GoToXY(0,23);
}
return 0;
}
int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow)
{
minitialize();
HANDLE hRecvThread;
HANDLE hSendThread;
HANDLE hHeaderThread;
DWORD dwRecvThreadId;
DWORD dwSendThreadId;
DWORD dwHeaderThreadId;
hHeaderThread = CreateThread(NULL,0,headerfunc,"1",0,&dwHeaderThreadId);
for (int mf=2; mf<25; mf++) {
std::cout<<"\n";
}
hSendThread = CreateThread(NULL,0,sendfunc,"1",0,&dwSendThreadId);
// Accept a client socket
for (int sock=1; sock<100; sock++) {
ClientSocket = accept(ListenSocket, NULL, NULL);
char sockprint[80];
char sockchar[4];
itoa(sock,sockchar,10);
strcpy(sockprint,"Client ");
strcat(sockprint,sockchar);
strcat(sockprint," connected.");
printm(sockprint);
GoToXY(0,23);
if (ClientSocket == INVALID_SOCKET) {
printm("accept failed with error: %d\n", WSAGetLastError());
closesocket(ListenSocket);
WSACleanup();
return 1;
}
client[sock].cs=ClientSocket;
client[sock].con=true;
lastclient=clientnumber;
clientnumber++;
currentclient=clientnumber;
hRecvThread = CreateThread(NULL,0,recvfunc,"1",0,&dwRecvThreadId);
}
// shutdown the connection since we're done
mshutdown();
std::cin.ignore();
return 0;
}
int printm(char *inp, DWORD color) {
HANDLE hOut;
hOut = GetStdHandle(STD_OUTPUT_HANDLE);
SetConsoleTextAttribute(hOut,
color);
printm(inp);
SetConsoleTextAttribute(hOut, 0 |
FOREGROUND_RED |
FOREGROUND_GREEN |
FOREGROUND_BLUE);
return 0;
}
int printm(char *inp) {
CONSOLE_SCREEN_BUFFER_INFO SBInfo;
HANDLE hOut = GetStdHandle(STD_OUTPUT_HANDLE);
GetConsoleScreenBufferInfo(hOut, &SBInfo);
int xx = SBInfo.dwCursorPosition.X;
int yy = SBInfo.dwCursorPosition.Y;
GoToXY(0,22);
std::cout<<inp<<"\n";
scroll();
GoToXY(xx,yy);
return 1;
}
int msend(char msendbuf[512]) // Send a message
{
if (strncmp(msendbuf,"Server> /exit",(strlen(msendbuf))) == 0) {
mexit();
}
if (strncmp(msendbuf,"Server> /set_client",19) == 0) {
int nm=atoi(&msendbuf[20]);
currentclient=nm;
ClientSocket=client[nm].cs;
char sockchar[4];
itoa(ClientSocket,sockchar,10);
char sockprint[80];
strcpy(sockprint,"New Socket: ");
strcat(sockprint,sockchar);
printm(sockprint);
char clientprint[80];
strcpy(clientprint,"Client: ");
strcat(clientprint,&msendbuf[20]);
printm(clientprint);
}
if (strncmp(msendbuf,"Server> /list_clients",(strlen(msendbuf))) == 0) {
printm("Clients:",FOREGROUND_RED);
for (int cm=1; cm < 100; cm++) {
int cn=client[cm].cs;
if (cn>0) {
char cli[80];
char cmchar[4];
char cnchar[80];
itoa(cn,cnchar,10);
itoa(cm,cmchar,10);
strcpy(cli,cmchar);
strcat(cli," ");
strcat(cli,cnchar);
strcat(cli," ");
strcat(cli,client[cm].ip.c_str());
strcat(cli," ");
strcat(cli,client[cm].name.c_str());
printm(cli,FOREGROUND_RED);
}
else {
break;
}
}
}
if (strncmp(msendbuf,"Server> /test",(strlen(msendbuf))) == 0) {
char ipcon[500];
*ipcon=(system("ipconfig"));
}
if (strncmp(msendbuf,"Server> /help",(strlen(msendbuf))) == 0) {
printm("Type /help for help or:");
printm("/set_client [client number]");
printm("/list_clients");
}
int iResult3 = send( ClientSocket, msendbuf, 512, 0 );
if (iResult3 == SOCKET_ERROR) {
printm("send failed with error: %d\n", WSAGetLastError());
return 1;
}
}
char* mrecv(bool show) //Recieve a message
{
int iResult2 = recv(ClientSocket, recvbuf, 512, 0);
if (iResult2 > 0) {
if ((strncmp(recvbuf,"/",1)) != 0) {
printm(recvbuf);
}
if (strncmp(recvbuf,"/ip",3) == 0) {
client[clientnumber].ip=&recvbuf[4];
char prin[80];
strcpy(prin,"client[clientnumber].ip: ");
strcat(prin,client[clientnumber].ip.c_str());
printm(prin,FOREGROUND_BLUE);
}
if (strncmp(recvbuf,"/name",5) == 0) {
client[clientnumber].name=&recvbuf[6];
char prin2[80];
strcpy(prin2,"client[clientnumber].name: ");
strcat(prin2,client[clientnumber].name.c_str());
printm(prin2,FOREGROUND_GREEN | FOREGROUND_BLUE);
}
if (strncmp(recvbuf,"/alert",5) == 0) {
char *message=&recvbuf[7];
char prin2[80];
strcpy(prin2,client[clientnumber].name.c_str());
strcat(prin2,": ");
strcat(prin2, message);
printm(prin2,FOREGROUND_RED);
}
if (strncmp(recvbuf,"Client> /alert",14) == 0) {
char *message=&recvbuf[15];
char prin2[80];
strcpy(prin2,client[clientnumber].name.c_str());
strcat(prin2,": ");
strcat(prin2, message);
printm(prin2,FOREGROUND_RED);
}
}
else if (iResult2 == 0) {
printf("Connection closing...\n");
closesocket(ClientSocket);
WSACleanup();
return "1";
}
else {
printm("recv failed with error: %d\n", WSAGetLastError());
printm("Client must have disconnected. Please select a new client.");
return "1";
}
return recvbuf;
}
int minitialize() //initialize the winsock server
{
// Initialize Winsock
iResult = WSAStartup(MAKEWORD(2,2), &wsaData);
if (iResult != 0) {
printm("WSAStartup failed with error: %d\n", iResult);
return 1;
}
ZeroMemory(&hints, sizeof(hints));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
hints.ai_flags = AI_PASSIVE;
// Resolve the server address and port
iResult = getaddrinfo(NULL, DEFAULT_PORT, &hints, &result);
if ( iResult != 0 ) {
printm("getaddrinfo failed with error: %d\n", iResult);
WSACleanup();
return 1;
}
// Create a SOCKET for connecting to server
ListenSocket = socket(result->ai_family, result->ai_socktype, result->ai_protocol);
if (ListenSocket == INVALID_SOCKET) {
printm("socket failed with error: %ld\n", WSAGetLastError());
freeaddrinfo(result);
WSACleanup();
return 1;
}
// Setup the TCP listening socket
iResult = bind( ListenSocket, result->ai_addr, (int)result->ai_addrlen);
if (iResult == SOCKET_ERROR) {
printm("bind failed with error: %d\n", WSAGetLastError());
freeaddrinfo(result);
closesocket(ListenSocket);
WSACleanup();
return 1;
}
freeaddrinfo(result);
iResult = listen(ListenSocket, SOMAXCONN);
if (iResult == SOCKET_ERROR) {
printm("listen failed with error: %d\n", WSAGetLastError());
closesocket(ListenSocket);
WSACleanup();
return 1;
}
unsigned long b=1;
ioctlsocket(ClientSocket,FIONBIO,&b);
}
int mshutdown() //shutdown the server
{
iResult = shutdown(ClientSocket, SD_SEND);
if (iResult == SOCKET_ERROR) {
printm("shutdown failed with error: %d\n", WSAGetLastError());
closesocket(ClientSocket);
WSACleanup();
return 1;
}
// cleanup
closesocket(ClientSocket);
WSACleanup();
return 0;
}
void GoToXY(int column, int line)
{
// Create a COORD structure and fill in its members.
// This specifies the new position of the cursor that we will set.
COORD coord;
coord.X = column;
coord.Y = line;
// Obtain a handle to the console screen buffer.
// (You're just using the standard console, so you can use STD_OUTPUT_HANDLE
// in conjunction with the GetStdHandle() to retrieve the handle.)
// Note that because it is a standard handle, we don't need to close it.
HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
// Finally, call the SetConsoleCursorPosition function.
if (!SetConsoleCursorPosition(hConsole, coord))
{
// Uh-oh! The function call failed, so you need to handle the error.
// You can call GetLastError() to get a more specific error code.
// ...
return;
}
}
int scroll( void )
{
HANDLE hStdout;
CONSOLE_SCREEN_BUFFER_INFO csbiInfo;
SMALL_RECT srctScrollRect, srctClipRect;
CHAR_INFO chiFill;
COORD coordDest;
hStdout = GetStdHandle(STD_OUTPUT_HANDLE);
if (hStdout == INVALID_HANDLE_VALUE)
{
printf("GetStdHandle failed with %d\n", GetLastError());
return 1;
}
// Get the screen buffer size.
if (!GetConsoleScreenBufferInfo(hStdout, &csbiInfo))
{
printf("GetConsoleScreenBufferInfo failed %d\n", GetLastError());
return 1;
}
// The scrolling rectangle
srctScrollRect.Top = 1;
srctScrollRect.Bottom = 22;
srctScrollRect.Left = 0;
srctScrollRect.Right = csbiInfo.dwSize.X - 1;
// The destination for the scroll rectangle is one row up.
coordDest.X = 0;
coordDest.Y = 0;
// The clipping rectangle
srctClipRect.Top = 2;
srctClipRect.Bottom = 22;
srctClipRect.Left = 0;
srctClipRect.Right = csbiInfo.dwSize.X - 1;
// Fill the bottom row with blanks.
chiFill.Attributes = FOREGROUND_RED;
chiFill.Char.AsciiChar = (char)' ';
// Scroll up one line.
if(!ScrollConsoleScreenBuffer(
hStdout, // screen buffer handle
&srctScrollRect, // scrolling rectangle
&srctClipRect, // clipping rectangle
coordDest, // top left destination cell
&chiFill)) // fill character and color
{
printf("ScrollConsoleScreenBuffer failed %d\n", GetLastError());
return 1;
}
return 0;
}
int mexit()
{
msend("/server_closed");
mshutdown();
exit(0);
}
Turns out it was the recursive calling in my "sendfunc" thread that tripped me up.
Specifically,
if (msend(msendbuf)==1) {
"Client must have disconnected. Please select a new client.";
sendfunc("1");
}
Because I continued to call "sendfunc" from itself, it caused the stack overflow.
So, for anyone else having these problems, watch for overkill recursive function calls.
I simply removed my sending function and I was good to go.
I am trying to replace the Windows Bluetooth pairing. I found some code that was suppose to do this, and I mostly mimiced that code. Although, when I run the code which is below I always get a 258 error code.
Below is the code that does the actual pairing.
#include <stdio.h>
#include <tchar.h>
#include <stdlib.h>
#include <initguid.h>
#include <winsock2.h>
#include <ws2bth.h>
#include <BluetoothAPIs.h>
bool BluetoothAuthCallback(LPVOID pvParam, PBLUETOOTH_AUTHENTICATION_CALLBACK_PARAMS pAuthCallbackParams)
{
DWORD dwRet;
fprintf(stderr, "BluetoothAuthCallback 0x%x\n", pAuthCallbackParams->deviceInfo.Address.ullLong);
dwRet = BluetoothSendAuthenticationResponse(NULL, &(pAuthCallbackParams->deviceInfo), L"1234");
if(dwRet != ERROR_SUCCESS)
{
fprintf(stderr, "BluetoothSendAuthenticationResponse ret %d\n", dwRet);
ExitProcess(2);
return 1;
}
fprintf(stderr, "BluetoothAuthCallback finish\n");
ExitProcess(0);
return 1;
}
int _tmain(int argc, _TCHAR* argv[])
{
SOCKADDR_BTH sa = { 0 };
int sa_len = sizeof(sa);
DWORD dwRet;
BLUETOOTH_DEVICE_INFO btdi = {0};
HBLUETOOTH_AUTHENTICATION_REGISTRATION hRegHandle = 0;
// initialize windows sockets
WORD wVersionRequested;
WSADATA wsaData;
wVersionRequested = MAKEWORD( 2, 0 );
if( WSAStartup( wVersionRequested, &wsaData ) != 0 ) {
ExitProcess(2);
}
// parse the specified Bluetooth address
if( argc < 2 ) {
fprintf(stderr, "usage: rfcomm-client <addr>\n"
"\n addr must be in the form (XX:XX:XX:XX:XX:XX)");
ExitProcess(2);
}
if( SOCKET_ERROR == WSAStringToAddress( argv[1], AF_BTH,
NULL, (LPSOCKADDR) &sa, &sa_len ) ) {
ExitProcess(2);
}
btdi.dwSize = sizeof(BLUETOOTH_DEVICE_INFO);
btdi.Address.ullLong = sa.btAddr;
btdi.ulClassofDevice = 0;
btdi.fConnected = false;
btdi.fRemembered = false;
btdi.fAuthenticated = false;
dwRet = BluetoothRegisterForAuthenticationEx(&btdi, &hRegHandle, (PFN_AUTHENTICATION_CALLBACK_EX)&BluetoothAuthCallback, NULL);
if(dwRet != ERROR_SUCCESS)
{
fprintf(stderr, "BluetoothRegisterForAuthenticationEx ret %d\n", dwRet);
ExitProcess(2);
}
dwRet = BluetoothAuthenticateDeviceEx(NULL, NULL, &btdi, NULL,MITMProtectionNotRequired);
if(dwRet != ERROR_SUCCESS)
{
fprintf(stderr, "BluetoothAuthenticateDevice ret %d\n", dwRet);
ExitProcess(2);
}
Sleep(1000);
fprintf(stderr, "pairing finish\n");
ExitProcess(0);
return 0;
}
Below this is how I find the address to pass into the pairing application.
// BluetoothAddressFinder.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include <initguid.h>
#include <winsock2.h>
#include <ws2bth.h>
#include <BluetoothAPIs.h>
int _tmain(int argc, _TCHAR* argv[])
{
BLUETOOTH_RADIO_INFO m_bt_info = {sizeof(BLUETOOTH_RADIO_INFO),0,};
BLUETOOTH_FIND_RADIO_PARAMS m_bt_find_radio = {sizeof(BLUETOOTH_FIND_RADIO_PARAMS)};
BLUETOOTH_DEVICE_INFO m_device_info = {sizeof(BLUETOOTH_DEVICE_INFO),0,};
BLUETOOTH_DEVICE_SEARCH_PARAMS m_search_params = {
sizeof(BLUETOOTH_DEVICE_SEARCH_PARAMS),
1, 0,
1,1,1,15,NULL
};
HANDLE m_radio = NULL;
HBLUETOOTH_RADIO_FIND m_bt = NULL;
HBLUETOOTH_DEVICE_FIND m_bt_dev = NULL;
int m_radio_id;
DWORD mbtinfo_ret;
int tempNumberOfDevices = 0;
m_bt = BluetoothFindFirstRadio(&m_bt_find_radio, &m_radio);
m_radio_id = 0;
do {
// Then get the radio device info....
mbtinfo_ret = BluetoothGetRadioInfo(m_radio, &m_bt_info);
// If there was an issue with the current radio check the next radio
if(mbtinfo_ret != ERROR_SUCCESS)
continue;
m_search_params.hRadio = m_radio;
ZeroMemory(&m_device_info, sizeof(BLUETOOTH_DEVICE_INFO));
m_device_info.dwSize = sizeof(BLUETOOTH_DEVICE_INFO);
// Next for every radio, get the device
m_bt_dev = BluetoothFindFirstDevice(&m_search_params, &m_device_info);
// Get the device info
do {
tempNumberOfDevices+=1;
fprintf(stdout, "Device name: %S Device Address: %d:%d:%d:%d:%d:%d \n" ,m_device_info.szName,m_device_info.Address.rgBytes[5],m_device_info.Address.rgBytes[4], m_device_info.Address.rgBytes[3], m_device_info.Address.rgBytes[2], m_device_info.Address.rgBytes[1], m_device_info.Address.rgBytes[0] );
} while(BluetoothFindNextDevice(m_bt_dev, &m_device_info));
} while(BluetoothFindNextRadio(&m_bt_find_radio, &m_radio));
}
I know, this method is outdated, just curious.
When I call ChangeClipboardChain() from atexit handler, it succeeds. When precc Ctrl-C, it fails. I know it, because other clipboard viewers don't receive WM_CHANGECBCHAIN.
This sample program exits when something is copied to clipboard 4 times:
#ifndef _WIN32_WINNT // Allow use of features specific to Windows XP or later.
#define _WIN32_WINNT 0x0501 // Change this to the appropriate value to target other versions of Windows.
#endif
#include <stdio.h>
#include <tchar.h>
#include <windows.h>
static void pWin32Error(const char* fmt, ...);
static int counter=0;
static HWND nextWnd = NULL;
static
LRESULT CALLBACK WindowProc(HWND hwnd,UINT uMsg,WPARAM wParam,LPARAM lParam)
{
switch (uMsg) {
case WM_CHANGECBCHAIN:
{
HWND wndRemove = (HWND)wParam;
HWND wndNextNext = (HWND)lParam;
printf("WM_CHANGECBCHAIN %p %p\n", (void*)wndRemove, (void*)wndNextNext);
if (nextWnd == wndRemove) {
printf("saving next window %p\n", (void*)wndNextNext);
nextWnd = wndNextNext;
} else if (nextWnd) {
printf("notifying next window %p\n", (void*)nextWnd);
return SendMessage(nextWnd,uMsg,wParam,lParam);
} else {
printf("not notifying next window %p\n", (void*)nextWnd);
}
}
break;
case WM_DRAWCLIPBOARD:
counter++;
if (counter > 4) exit(0);
printf("WM_DRAWCLIPBOARD\n");
if (nextWnd) {
printf("notifying next window %p\n", (void*)nextWnd);
return SendMessage(nextWnd,uMsg,wParam,lParam);
} else {
printf("not notifying next window %p\n", (void*)nextWnd);
}
break;
default:
return DefWindowProc( hwnd,uMsg,wParam,lParam);
}
return 0;
}
static volatile HWND global_hwnd = NULL;
WNDCLASS wndclass = {
0,/* UINT style;*/
WindowProc,/* WNDPROC lpfnWndProc;*/
0,/* int cbClsExtra;*/
0,/* int cbWndExtra;*/
NULL,/* HINSTANCE hInstance;*/
NULL,/* HICON hIcon;*/
NULL,/* HCURSOR hCursor;*/
NULL,/* HBRUSH hbrBackground;*/
NULL,/* LPCWSTR lpszMenuName;*/
_T("myclipmonitor")/* LPCWSTR lpszClassName;*/
};
static void unreg() {
HWND hwnd;
hwnd = (HWND)InterlockedExchangePointer(&global_hwnd, NULL); /* ignore the "cast to greater size" warning */
if (hwnd) {
printf("Removing self from chain: %p <- %p\n", (void*)hwnd, (void*)nextWnd);
if (!ChangeClipboardChain(hwnd, nextWnd) && GetLastError() != 0) {
pWin32Error("ChangeClipboardChain() failed");
}
}
}
static void exitproc() {
fprintf(stderr, "exitproc()\n");
unreg();
}
static
BOOL WINAPI CtrlHandler( DWORD fdwCtrlType )
{
fprintf(stderr, "CtrlHandler()\n");
unreg();
switch ( fdwCtrlType ) {
case CTRL_C_EVENT:
fprintf(stderr, "\n\n Stopping due to Ctrl-C.\n" );
break;
case CTRL_CLOSE_EVENT:
fprintf(stderr, "\n\n Stopping due to closing the window.\n" );
break;
case CTRL_BREAK_EVENT:
fprintf(stderr, "\n\n Stopping due to Ctrl-Break.\n" );
break;
// Pass other signals to the next handler - ret = FALSE
case CTRL_LOGOFF_EVENT:
fprintf(stderr, "\n\n Stopping due to logoff.\n" );
break;
case CTRL_SHUTDOWN_EVENT:
fprintf(stderr, "\n\n Stopping due to system shutdown.\n" );
break;
default:
fprintf(stderr, "\n\n Stopping due to unknown event.\n" );
}
return FALSE;
}
int _tmain(int argc, _TCHAR* argv[])
{
ATOM classatom;
HINSTANCE hinst = GetModuleHandle(NULL);
MSG msg;
wndclass.hInstance = hinst;
classatom = RegisterClass(&wndclass);
if (classatom == 0) {
pWin32Error("RegisterClass() failed");
return -1;
}
global_hwnd = CreateWindowEx(0, (LPCTSTR)classatom, NULL, 0, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hinst, NULL);
if (!global_hwnd) {
pWin32Error("CreateWindowEx() failed");
return -1;
}
printf("hwnd = %p\n", (void*)global_hwnd);
nextWnd = SetClipboardViewer(global_hwnd);
if (!nextWnd && GetLastError() != 0) {
pWin32Error("SetClipboardViewer() failed");
return -1;
}
printf("nextWnd = %p\n", (void*)nextWnd);
atexit(exitproc);
if (0 == SetConsoleCtrlHandler( CtrlHandler, TRUE )) {
pWin32Error("SetConsoleCtrlHandler() failed");
return -1;
}
while (GetMessage(&msg, NULL, 0, 0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return 0;
}
static char *cleanstr(char *s)
{
while(*s) {
switch((int)*s){
case 13:
case 10:
*s=' ';
break;
}
s++;
}
return s;
}
static void __pWin32Error(int level, DWORD eNum, const char* fmt, va_list args)
{
char emsg[1024];
char *pend = emsg + sizeof(emsg);
size_t count = sizeof(emsg);
unsigned u;
do {
u = (unsigned)_vsnprintf(pend - count, count, fmt, args);
if (u >= count) break;
count -= u;
u = (unsigned)_snprintf(pend - count, count, ": ");
if (u >= count) break;
count -= u;
u = FormatMessageA( FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, eNum,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
pend - count, (DWORD)count, NULL );
if (u == 0) {
u = (unsigned)_snprintf(pend - count, count, "0x%08x (%d)", eNum, eNum);
}
} while(0);
emsg[sizeof(emsg)-1] = '\0';
pend = cleanstr(emsg);
if (pend < emsg + sizeof(emsg)-1) {
pend++;
*pend = '\0';
}
pend[-1] = '\n';
puts(emsg);
}
static void pWin32Error(const char* fmt, ...)
{
va_list args;
va_start(args, fmt);
__pWin32Error(0, GetLastError(), fmt, args);
va_end(args);
}
there's a question:
Is there any way to pair Bluetooth device in Windows programmatically? (c++, c#)
thanks for replies
Yes, the reference documentation is available on MSDN.
32feet.NET is a C# wrapper, available here. Information on pairing is here.
Python is a tempting and overall easy solution, but PyBlueZ does not expose the windows Bluetooth authentication APIs here: https://msdn.microsoft.com/en-us/library/windows/desktop/cc766819(v=vs.85).aspx
One way to get around this is to create a command line tool and use this through Python. To create command line tools for Windows, use Visual Studio and add the necessary libraries to your project linker properties: Bthprops.lib and ws2_32.lib
Below is the code for a project to make a command line tool with 1 parameter, the MAC address, that pairs the specified device using "Just Works" pairing. See commented code for using passkey pairing.
#include "stdafx.h"
#include <initguid.h>
#include <winsock2.h>
#include <BluetoothAPIs.h>
#include <ws2bth.h>
BOOL WINAPI BluetoothAuthCallback(LPVOID pvParam, PBLUETOOTH_AUTHENTICATION_CALLBACK_PARAMS pAuthCallbackParams);
int _tmain(int argc, _TCHAR* argv[])
{
SOCKADDR_BTH sa = { 0 };
int sa_len = sizeof(sa);
DWORD dwRet;
BLUETOOTH_DEVICE_INFO btdi = { 0 };
HBLUETOOTH_AUTHENTICATION_REGISTRATION hRegHandle = 0;
// initialize windows sockets
WORD wVersionRequested;
WSADATA wsaData;
wVersionRequested = MAKEWORD(2, 0);
if (WSAStartup(wVersionRequested, &wsaData) != 0) {
ExitProcess(2);
}
// parse the specified Bluetooth address
if (argc < 2) {
fprintf(stderr, "usage: csbtpair <addr>\n"
"\n addr must be in the form (XX:XX:XX:XX:XX:XX)");
ExitProcess(2);
}
if (SOCKET_ERROR == WSAStringToAddress(argv[1], AF_BTH,
NULL, (LPSOCKADDR)&sa, &sa_len)) {
ExitProcess(2);
}
// setup device info
btdi.dwSize = sizeof(BLUETOOTH_DEVICE_INFO);
btdi.Address.ullLong = sa.btAddr;
btdi.ulClassofDevice = 0;
btdi.fConnected = false;
btdi.fRemembered = false;
btdi.fAuthenticated = false;
// register authentication callback. this prevents UI from showing up.
dwRet = BluetoothRegisterForAuthenticationEx(&btdi, &hRegHandle, &BluetoothAuthCallback, NULL);
if (dwRet != ERROR_SUCCESS)
{
fprintf(stderr, "BluetoothRegisterForAuthenticationEx ret %d\n", dwRet);
ExitProcess(2);
}
// authenticate device (will call authentication callback)
AUTHENTICATION_REQUIREMENTS authreqs = MITMProtectionNotRequired;
fprintf(stderr, "BluetoothAuthReqs = %d\n", authreqs);
dwRet = BluetoothAuthenticateDeviceEx(NULL, NULL, &btdi, NULL, authreqs);
if (dwRet != ERROR_SUCCESS)
{
fprintf(stderr, "BluetoothAuthenticateDevice ret %d\n", dwRet);
if (dwRet == ERROR_CANCELLED)
{
fprintf(stderr, "Cancelled");
}
else if (dwRet == ERROR_INVALID_PARAMETER)
{
fprintf(stderr, "Invalid Parameter");
}
else if (dwRet == ERROR_NO_MORE_ITEMS)
{
fprintf(stderr, "Already paired!");
}
}
fprintf(stderr, "pairing finish\n");
ExitProcess(0);
return 0;
}
// Authentication callback
BOOL WINAPI BluetoothAuthCallback(LPVOID pvParam, PBLUETOOTH_AUTHENTICATION_CALLBACK_PARAMS pAuthCallbackParams)
{
DWORD dwRet;
fprintf(stderr, "BluetoothAuthCallback 0x%x\n", pAuthCallbackParams->deviceInfo.Address.ullLong);
BLUETOOTH_AUTHENTICATE_RESPONSE AuthRes;
AuthRes.authMethod = pAuthCallbackParams->authenticationMethod;
fprintf(stderr, "Authmethod %d\n", AuthRes.authMethod);
// Check to make sure we are using numeric comparison (Just Works)
if (AuthRes.authMethod == BLUETOOTH_AUTHENTICATION_METHOD_NUMERIC_COMPARISON)
{
fprintf(stderr, "Numeric Comparison supported\n");
}
AuthRes.bthAddressRemote = pAuthCallbackParams->deviceInfo.Address;
AuthRes.negativeResponse = FALSE;
// Commented out code is used for pairing using the BLUETOOTH_AUTHENTICATION_METHOD_PASSKEY method
//memcpy_s(AuthRes.pinInfo.pin, sizeof(AuthRes.pinInfo.pin), L"1234", 0);
//AuthRes.pinInfo.pinLength = 0;
// Respond with numerical value for Just Works pairing
AuthRes.numericCompInfo.NumericValue = 1;
// Send authentication response to authenticate device
dwRet = BluetoothSendAuthenticationResponseEx(NULL, &AuthRes);
if (dwRet != ERROR_SUCCESS)
{
fprintf(stderr, "BluetoothSendAuthenticationResponseEx ret %d\n", dwRet);
if (dwRet == ERROR_CANCELLED)
{
fprintf(stderr, "Bluetooth device denied passkey response or communicatino problem.\n");
}
else if (dwRet == E_FAIL)
{
fprintf(stderr, "Device returned a failure code during authentication.\n");
}
else if (dwRet == 1244)
{
fprintf(stderr, "Not authenticated\n");
}
}
else
{
fprintf(stderr, "BluetoothAuthCallback finish\n");
}
return 1; // This value is ignored
}
In lieu of creating this yourself, you may want to try this pre-made solution:
http://bluetoothinstaller.com/bluetooth-command-line-tools/
It did not work for my particular solution.
Then, you will need to run your downloaded or custom command line tool from python as an administrator. To do this reliably, I recommend the stackoverflow question:
How to run python script with elevated privilege on windows
I meet the same problem,and I have resolved the problem, Maybe you can try it:
make a windows tool named pairtool.exe, it help you to pairing with command line. the key api is BluetoothAuthenticateDevice, please refering the functions document
dwRet = BluetoothAuthenticateDevice(NULL, NULL, &btdi, L"1234", 4);
if(dwRet != ERROR_SUCCESS)
{
fprintf(stderr, "BluetoothAuthenticateDevice ret %d\n", dwRet);
ExitProcess(2);
}
python code:
def connect2Btdev(devName):
#found the device addr
addr = inquiry(devName)
if addr == None:
return None
#pairing with pairtool.exe
cmd=r'%s %s' % ('pairtool.exe',addr)
ret = os.system(cmd)
if ret <> 0:
return None
here is all the code of pairtool.exe:
#include "stdafx.h"
#include <initguid.h>
#include <winsock2.h>
#include <BluetoothAPIs.h>
#include <ws2bth.h>
bool BluetoothAuthCallback(LPVOID pvParam, PBLUETOOTH_AUTHENTICATION_CALLBACK_PARAMS pAuthCallbackParams)
{
DWORD dwRet;
fprintf(stderr, "BluetoothAuthCallback 0x%x\n", pAuthCallbackParams->deviceInfo.Address.ullLong);
dwRet = BluetoothSendAuthenticationResponse(NULL, &(pAuthCallbackParams->deviceInfo), L"1234");
if(dwRet != ERROR_SUCCESS)
{
fprintf(stderr, "BluetoothSendAuthenticationResponse ret %d\n", dwRet);
ExitProcess(2);
return 1;
}
fprintf(stderr, "BluetoothAuthCallback finish\n");
ExitProcess(0);
return 1;
}
int _tmain(int argc, _TCHAR* argv[])
{
SOCKADDR_BTH sa = { 0 };
int sa_len = sizeof(sa);
DWORD dwRet;
BLUETOOTH_DEVICE_INFO btdi = {0};
HBLUETOOTH_AUTHENTICATION_REGISTRATION hRegHandle = 0;
// initialize windows sockets
WORD wVersionRequested;
WSADATA wsaData;
wVersionRequested = MAKEWORD( 2, 0 );
if( WSAStartup( wVersionRequested, &wsaData ) != 0 ) {
ExitProcess(2);
}
// parse the specified Bluetooth address
if( argc < 2 ) {
fprintf(stderr, "usage: rfcomm-client <addr>\n"
"\n addr must be in the form (XX:XX:XX:XX:XX:XX)");
ExitProcess(2);
}
if( SOCKET_ERROR == WSAStringToAddress( argv[1], AF_BTH,
NULL, (LPSOCKADDR) &sa, &sa_len ) ) {
ExitProcess(2);
}
//注册回调函数
btdi.dwSize = sizeof(BLUETOOTH_DEVICE_INFO);
btdi.Address.ullLong = sa.btAddr;
btdi.ulClassofDevice = 0;
btdi.fConnected = false;
btdi.fRemembered = false;
btdi.fAuthenticated = false;
dwRet = BluetoothRegisterForAuthenticationEx(&btdi, &hRegHandle, &BluetoothAuthCallback, NULL);
if(dwRet != ERROR_SUCCESS)
{
fprintf(stderr, "BluetoothRegisterForAuthenticationEx ret %d\n", dwRet);
ExitProcess(2);
}
dwRet = BluetoothAuthenticateDevice(NULL, NULL, &btdi, L"1234", 4);
if(dwRet != ERROR_SUCCESS)
{
fprintf(stderr, "BluetoothAuthenticateDevice ret %d\n", dwRet);
ExitProcess(2);
}
Sleep(1000);
fprintf(stderr, "pairing finish\n");
ExitProcess(0);
return 0;
}
Microsoft has introduced Windows.Devices.Enumeration API available for UWP and traditional applications, which makes pairing of bluetooth devices very easy (for details look at the official C# and C++ example). As far as I understand it is the API which is used by built-in "Bluetooth & other devices" UI dialog. As of an example of what console utility you can write using this API you can take a look at my console BluetoothDevicePairing utility.
You can do so by using the functions documented under MSDN Bluetooth Functions.
These enable searching and pairing of bluetooth devices programmatically.
I need to inject a DLL into Adobe Reader X that reads the events sent to the scrollbar (even if it is hidden). I need to do this to be able to find out what page of the document i am on.
I have tried hooking a dll using the win32 hooking API, i give a CBT hook to all processes on the desktop and listen for the creation of the Adobe Reader X window, then hooking this window with my scrollbar hook.
The problem is that i never get the scrollbar hook placed on Adobe Reader X, i dont get the create window or window activate messages for these windows when they are created. How do i get these messages and how do i hook into Adobe Reader X?
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "pdfviewlib.h"
#include <sstream>
#pragma data_seg(".PDFVIEWLIB")
PDFVIEWOBJ pdfviewobj[MAX_PDFOBJS] = {NULL};
HHOOK globalhook = NULL;
BOOL debug = TRUE;
INT sSlide = 0;
#pragma data_seg()
#pragma comment(linker, "/SECTION:.PDFVIEWLIB,RWS")
#define DEBUG(...) if(debug) printf(__VA_ARGS__)
HINSTANCE hInstance = NULL;
static int tAttach = 0;
static int tDetach = 0;
BOOL APIENTRY DllMain( HMODULE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
)
{
hInstance = (HINSTANCE)hModule;
switch (ul_reason_for_call)
{
case DLL_PROCESS_ATTACH:
DEBUG("PROCESS_ATTACH\n");
break;
case DLL_THREAD_ATTACH:
DEBUG("THREAD_ATTACH %i\n",tAttach++);
break;
case DLL_THREAD_DETACH:
DEBUG("THREAD_DETACH %i\n", tDetach++);
break;
case DLL_PROCESS_DETACH:
// Clean up... hopefully there is only the one process attached?
DEBUG("PROCESS_DETACH\n");
for(int i = 0; i<MAX_PDFOBJS; i++)
ClosePDF(i);
break;
}
return TRUE;
}
DllExport void SetDebug(BOOL onoff)
{
printf("SetDebug\n");
debug = onoff;
DEBUG("enabled\n");
}
//Check if Acrobat Reader is installed
DllExport BOOL CheckInstalled()
{
DEBUG("CheckInstalled\n");
char cmdline[MAX_PATH * 2];
return GetPDFViewerPath(cmdline, sizeof(cmdline));
}
// Open the PDF
DllExport int OpenPDF(char *filename, HWND hParentWnd, int startSlide)
{
STARTUPINFO * si = (STARTUPINFO *) malloc(sizeof(STARTUPINFO));
PROCESS_INFORMATION * pi = (PROCESS_INFORMATION*) malloc(sizeof(PROCESS_INFORMATION));
char cmdline[MAX_PATH * 2];
int id;
sSlide = startSlide;
DEBUG("OpenPDF start: %u", hParentWnd);
//First check if Acrobat Reader is installed before continuing
if(GetPDFViewerPath(cmdline, sizeof(cmdline))==FALSE)
{
DEBUG("OpenPDF: GetPDFTViewerPath failed\n");
return -1;
}
id = -1;
for(int i = 0; i<MAX_PDFOBJS; i++)
{
if(pdfviewobj[i].state==PDF_CLOSED)
{
id=i;
break;
}
}
if(id<0)
{
DEBUG("OpenPDF: Too many PDFs\n");
return -1;
}
if (pdfviewobj[id].state == PDF_STARTED)
{
DEBUG("RERUN WHEN PDF_STARTED\n");
return -1;
}
memset(&pdfviewobj[id], 0, sizeof(PDFVIEWOBJ));
strcpy_s(pdfviewobj[id].filename, MAX_PATH, filename);
pdfviewobj[id].state = PDF_CLOSED;
pdfviewobj[id].currentSlide = 0;
pdfviewobj[id].hParentWnd = hParentWnd;
pdfviewobj[id].hWnd = NULL;
pdfviewobj[id].hWnd2 = NULL;
strcat_s(cmdline, MAX_PATH * 2, "\\AcroRd32.exe /n /s /o");
strcat_s(cmdline, MAX_PATH * 2, " \"");
strcat_s(cmdline, MAX_PATH * 2, filename);
strcat_s(cmdline, MAX_PATH * 2, "\"");
si = (STARTUPINFO *)memset(si, 0, sizeof(STARTUPINFO));
pi = (PROCESS_INFORMATION *)memset(pi, 0, sizeof(PROCESS_INFORMATION));
if(globalhook!=NULL){
UnhookWindowsHookEx(globalhook);
DEBUG("Global unhooked\n");
globalhook = NULL;
}
//Set the global hook listening for Window Create/Window Activate messages
globalhook = SetWindowsHookEx(WH_CBT,CbtProc,hInstance,NULL);
if(globalhook==NULL)
{
DEBUG("OpenPDF: Global SetWindowsHookEx failed\n");
DEBUG("ERROR: %X\n", GetLastError());
globalhook = NULL;
ClosePDF(id);
return -1;
}
else DEBUG("GLOBAL HOOKED %X\n", globalhook);
pdfviewobj[id].state = PDF_STARTED;
Sleep(10);
DEBUG(cmdline);
//Run Acrobat Reader, PDF STATE SET TO STARTED
if(!CreateProcess(NULL, cmdline, NULL, NULL, FALSE, 0, 0, NULL, si, pi))
{
DEBUG("OpenPDF: CreateProcess failed\n");
ClosePDF(id);
return -1;
}
pdfviewobj[id].dwProcessId = pi->dwProcessId;
pdfviewobj[id].dwThreadId = pi->dwThreadId;
pdfviewobj[id].hThread = pi->hThread;
pdfviewobj[id].hProcess = pi->hProcess;
//WAIT FOR GLOBAL HOOK TO DETECT Acrobat Windows and set PDF STATE TO PDF_OPENED
//For some reason the loops exits and PDFSTATE is PDF_CLOSED...
while(pdfviewobj[id].state==PDF_STARTED)
Sleep(50);
DEBUG("PDFSTATE == CLOSED = %i \n", pdfviewobj[id].state==PDF_CLOSED);
DEBUG("PDFSTATE == STARTED = %i \n", pdfviewobj[id].state==PDF_STARTED);
DEBUG("PDFSTATE == OPENED = %i \n", pdfviewobj[id].state==PDF_OPENED);
DEBUG("PDFSTATE == LOADED = %i \n", pdfviewobj[id].state==PDF_LOADED);
if (sSlide > 0){
GotoSlide(id, sSlide+1);
}
pdfviewobj[id].state = PDF_LOADED;
DEBUG("OpenPDF Done: id=%i\n", id);
return id;
}
// Get the path of Acrobat Reader X from the registry
BOOL GetPDFViewerPath(char *pdfviewerpath, int strsize)
{
HKEY hkey;
DWORD dwtype, dwsize;
LRESULT lresult;
DEBUG("GetPDFViewerPath: start\n");
if(RegOpenKeyEx(HKEY_LOCAL_MACHINE, "SOFTWARE\\Adobe\\Acrobat Reader\\9.0\\InstallPath", 0, KEY_READ, &hkey)!=ERROR_SUCCESS)
return FALSE;
dwtype = REG_SZ;
dwsize = (DWORD)strsize;
lresult = RegQueryValueEx(hkey, NULL, NULL, &dwtype, (LPBYTE)pdfviewerpath, &dwsize );
RegCloseKey(hkey);
if(lresult!=ERROR_SUCCESS)
return FALSE;
DEBUG("GetPDFViewerPath: exit ok \n");
return TRUE;
}
// Unhook the Windows hook
void Unhook(int id)
{
DEBUG("Unhook: start %i\n", id);
if(pdfviewobj[id].hook!=NULL)
UnhookWindowsHookEx(pdfviewobj[id].hook);
pdfviewobj[id].hook = NULL;
DEBUG("Unhook: exit ok\n");
}
// Close the Acrobat Reader, release resources
DllExport void ClosePDF(int id)
{
DEBUG("ClosePDF: start %i\n", id);
if (globalhook != NULL) {
DEBUG("GLOBAL UNHOOKED %X\n", globalhook);
UnhookWindowsHookEx(globalhook);
globalhook = NULL;
}
else DEBUG("GLOBAL NOT UNHOOKED\n");
pdfviewobj[id].state = PDF_CLOSED;
Unhook(id);
if(pdfviewobj[id].hWnd==0)
TerminateThread(pdfviewobj[id].hThread, 0);
else
PostMessage(pdfviewobj[id].hWnd, WM_CLOSE, 0, 0);
CloseHandle(pdfviewobj[id].hThread);
CloseHandle(pdfviewobj[id].hProcess);
memset(&pdfviewobj[id], 0, sizeof(PDFVIEWOBJ));
DEBUG("ClosePDF: exit ok\n");
return;
}
// Return the number of the slide currently viewing
DllExport int GetCurrentSlide(int id)
{
DEBUG("GetCurrentSlide:%d\n", id);
if(pdfviewobj[id].state==0)
return -1;
else
return pdfviewobj[id].currentSlide;
}
// Take a step forwards through the show
DllExport void NextStep(int id)
{
DEBUG("NextStep:%d\n", id);
SetForegroundWindow(pdfviewobj[id].hWnd);
SetFocus(pdfviewobj[id].hWnd);
PostMessage(pdfviewobj[id].hWnd2, WM_MOUSEWHEEL, MAKEWPARAM(0, -WHEEL_DELTA), 0);
}
// Take a step backwards through the show
DllExport void PrevStep(int id)
{
DEBUG("PrevStep:%d\n", id);
SetForegroundWindow(pdfviewobj[id].hWnd);
SetFocus(pdfviewobj[id].hWnd);
PostMessage(pdfviewobj[id].hWnd2, WM_MOUSEWHEEL, MAKEWPARAM(0, WHEEL_DELTA), 0);
}
// Go directly to a slide
DllExport void GotoSlide(int id, int slideno)
{
//TODO: USE SETSCROLLINFO
}
// This hook is started with the AcroRd32.EXE process and waits for the WM_CREATEWND message.
// Release the hook as soon as we're complete to free up resources
LRESULT CALLBACK CbtProc(int nCode, WPARAM wParam, LPARAM lParam)
{
HHOOK hook = globalhook;
DEBUG("HOOK: %X\n", hook);
if (nCode < 0) {
return CallNextHookEx(hook, nCode, wParam, lParam);
}
else if(nCode==HCBT_CREATEWND)
{
DEBUG("CREATE WINDOW \n");
char csClassName[16];
char csCaptionName[16];
HWND hCurrWnd = (HWND)wParam;
DWORD retProcId = NULL;
GetClassName(hCurrWnd, csClassName, sizeof(csClassName));
GetWindowText(hCurrWnd, csCaptionName, sizeof(csCaptionName));
if((strcmp(csClassName, "AcrobatSDIWindow")==0)
||(strcmp(csClassName, "AVL_AVView")==0))
{
DEBUG("%s found \n", csClassName);
int id=-1;
DWORD windowthread = GetWindowThreadProcessId(hCurrWnd,NULL);
for(int i=0; i<MAX_PDFOBJS; i++)
{
if(pdfviewobj[i].dwThreadId==windowthread)
{
id=i;
break;
}
}
if(id>=0)
{
DEBUG("Matched threadid!\n");
if(strcmp(csClassName, "AVL_AVView")==0){
if (strcmp(csCaptionName, "AVPageView")==0){
pdfviewobj[id].hWnd2=hCurrWnd;
}
}
else
{
pdfviewobj[id].hWnd=hCurrWnd;
CBT_CREATEWND* cw = (CBT_CREATEWND*)lParam;
if(pdfviewobj[id].hParentWnd!=NULL)
cw->lpcs->hwndParent = pdfviewobj[id].hParentWnd;
}
if((pdfviewobj[id].hWnd!=NULL)&&(pdfviewobj[id].hWnd2!=NULL))
{
pdfviewobj[id].hook = SetWindowsHookEx(WH_CALLWNDPROC,CwpProc,hInstance,pdfviewobj[id].dwThreadId);
if (pdfviewobj[id].hook != NULL) {
DEBUG("Global UNHOOKED %X\n", globalhook);
UnhookWindowsHookEx(globalhook);
globalhook=NULL;
pdfviewobj[id].state = PDF_OPENED;
}
Sleep(10);
}
}
}
}
return CallNextHookEx(hook,nCode,wParam,lParam);
}
LRESULT CALLBACK CwpProc(int nCode, WPARAM wParam, LPARAM lParam){
CWPSTRUCT *cwp;
cwp = (CWPSTRUCT *)lParam;
HHOOK hook = NULL;
DWORD windowthread = GetWindowThreadProcessId(cwp->hwnd,NULL);
int id=-1;
for(int i=0; i<MAX_PDFOBJS; i++)
{
if(pdfviewobj[i].dwThreadId==windowthread)
{
id=i;
hook = pdfviewobj[id].hook;
break;
}
}
if((id>=0)&&(nCode==HC_ACTION))
{
DEBUG("CBT HC_ACTION\n");
if(cwp->message==SBM_SETSCROLLINFO)
{
DEBUG("CBT SBM_SETSCROLLINFO\n");
SCROLLINFO *scrInf;
scrInf = (SCROLLINFO *)cwp->lParam;
pdfviewobj[id].currentSlide = scrInf->nPos;
}
if((pdfviewobj[id].state != PDF_CLOSED)&&(cwp->message==WM_CLOSE||cwp->message==WM_QUIT)){
pdfviewobj[id].state = PDF_CLOSING;
}
}
return CallNextHookEx(hook,nCode,wParam,lParam);
}
heres the header if you need it
#define DllExport extern "C" __declspec( dllexport )
enum PDFVIEWSTATE { PDF_CLOSED, PDF_STARTED, PDF_OPENED, PDF_LOADED, PDF_CLOSING};
DllExport int OpenPDF(char *filename, HWND hParentWnd, int startSlide);
DllExport BOOL CheckInstalled();
DllExport void ClosePDF(int id);
DllExport int GetCurrentSlide(int id);
DllExport void NextStep(int id);
DllExport void PrevStep(int id);
DllExport void GotoSlide(int id, int slideno);
DllExport void SetDebug(BOOL onoff);
LRESULT CALLBACK CbtProc(int nCode, WPARAM wParam, LPARAM lParam);
LRESULT CALLBACK CwpProc(int nCode, WPARAM wParam, LPARAM lParam);
BOOL GetPDFViewerPath(char *pdfviewerpath, int strsize);
void Unhook(int id);
//MAXUMUM NUMBER OF PDF-PROCESSES CURRENTLY SET TO ONE
#define MAX_PDFOBJS 1
struct PDFVIEWOBJ
{
HHOOK hook;
HWND hWnd;
HWND hWnd2;
HWND hParentWnd;
HANDLE hProcess;
HANDLE hThread;
DWORD dwProcessId;
DWORD dwThreadId;
int currentSlide;
char filename[MAX_PATH];
PDFVIEWSTATE state;
};
Adobe Reader typically runs in protected mode. (See Edit/Preferences/Security (Enhanced). Un-check the "Enable Protected Mode at startup" checkbox.
Relaunch reader and see if you get your messages. You should. The issue is that the User Interface Privilege Isolation (UIPI) disallows many windows messages from crossing process boundaries between processes running at a different integrity level (low/medium/high). You are supposed to be able to change the windows message filter via ChangeWindowMessageFilterEx().
I am currently experiencing issues with Adobe Reader Xi where the ChangeWindowsMessageFilter and ChangeWindowMessageFilterEx do not seem to change the behavior of Adobe reader sending messages to the global hook receiver in the hooking process. I have copied noteapad.exe to notepad2.exe and lowered its integrity level to low via: icacls notepad2.exe /setintegritylevel low
(run from an elevated cmd prompt (i.e. run as admin)). When I do this my hooking works fine (using ChangeWindowMessageFilterEx()) but still does not get hooked messages from Adobe.
Also, Reader is 32-bit so make sure you are hooking it from a 32-bit hooking process otherwise you won't see messages either).