mysqlcppconn.dll Cannot find or open the PDB file - mysql

I am trying to build a simple MySQL db application in VC++ and have run into a slight problem.
I am using MySQL Connector C++ 1.1.0 and Visual Studio 2012 (Premium if that matters)
// ConsoleApplication1.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <sstream>
#include <memory>
#include <string>
#include <stdexcept>
/* MySQL Connector/C++ specific headers */
#include <driver.h>
#include <connection.h>
#include <statement.h>
#include <prepared_statement.h>
#include <resultset.h>
#include <metadata.h>
#include <resultset_metadata.h>
#include <exception.h>
#include <warning.h>
#include "mysql_driver.h"
#include "mysql_connection.h"
#define DBHOST "tcp://127.0.0.1:3306"
#define USER "root"
#define PASSWORD "root"
#define DATABASE "test"
using namespace std;
using namespace sql;
int _tmain(int argc, char *argv[]){
// I'm alive
cout << "Hello World!" << endl;
// necessary variables
Driver *driver;
Connection* con;
Statement *stmt;
ResultSet *res;
/*PreparedStatement *prep_stmt;
Savepoint *savept;*/
//
driver = get_driver_instance();
// Connect to DB
con = driver->connect("tcp//127.0.0.1:3306", "root", "root");
//
con->setAutoCommit(false);
// set schema
con->setSchema("world");
// create statement object
stmt = con->createStatement();
// alert user
cout << "Executing query: \"SELECT * FROM city\"" << endl;
// execute query "SELECT * FROM city"
res = stmt->executeQuery("SELECT * FROM city");
// alert user
cout << "\tRetrieved " << res->rowsCount() << " row(s)." << endl;
// fetch data
while(res->next()){
cout << res->getString("Name") << endl;
}
system("pause");
// Clean up
delete res;
delete stmt;
/*delete prep_stmt;*/
con->close();
delete con;
return 0;
} // end main
I am building this as a Win32 console application in Debug mode, changed the configuration to x64 and have moved mysqlcppconn.dll to the output directory.
The code is building correctly (*I think I have correctly added the necessary include directories as well as additional library dependencies/relevant paths). However, when I try to run it I get the following debug output:
'ConsoleApplication1.exe' (Win32): Loaded 'C:\Users\RBanerjee\Documents\Visual Studio 2012\Projects\ConsoleApplication1\x64\Debug\ConsoleApplication1.exe'. Symbols loaded.
'ConsoleApplication1.exe' (Win32): Loaded 'C:\Windows\System32\ntdll.dll'. Symbols loaded.
'ConsoleApplication1.exe' (Win32): Loaded 'C:\Windows\System32\kernel32.dll'. Symbols loaded.
'ConsoleApplication1.exe' (Win32): Loaded 'C:\Windows\System32\KernelBase.dll'. Symbols loaded.
'ConsoleApplication1.exe' (Win32): Loaded 'C:\Users\RBanerjee\Documents\Visual Studio 2012\Projects\ConsoleApplication1\x64\Debug\mysqlcppconn.dll'. Cannot find or open the PDB file.
'ConsoleApplication1.exe' (Win32): Loaded 'C:\Windows\System32\libmysql.dll'. Module was built without symbols.
'ConsoleApplication1.exe' (Win32): Unloaded 'C:\Windows\System32\libmysql.dll'
'ConsoleApplication1.exe' (Win32): Loaded 'C:\Windows\System32\libmysql.dll'. Module was built without symbols.
'ConsoleApplication1.exe' (Win32): Unloaded 'C:\Windows\System32\libmysql.dll'
The program '[4172] ConsoleApplication1.exe' has exited with code -1073741701 (0xc000007b).
I am a little lost as to what to do next, I really just want to be able to develop a Windows application that can connect to a MySQL db and interact with it. I would appreciate any help with this problem or a pointer to some other tutorial.
Thanks
Rohit

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I compiled the code with no errors and the following command:
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I just want to use cpp to read LevelDB features extracted from caffe.
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// Copyright 2014 BVLC and contributors.
#include <glog/logging.h>
#include <stdio.h> // for snprintf
#include <google/protobuf/text_format.h>
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#include <iostream>
#include <map>
//#include "cpp/sample.pb.h"
#include "caffe/proto/caffe.pb.h" // for: Datum
using namespace caffe;
#define NUMBER_FEATURES_PER_IMAGE 16
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int main(int argc, char** argv)
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//google::InitGoogleLogging(argv[0]);
if (argc < 2)
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leveldb::DB* db;
leveldb::Options options;
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Datum d;
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It builds without error,but when running it says:
/home/deep/cuda-workspace/ReadLevelDB/Debug/ReadLevelDB: error while loading shared libraries: libcaffe.so.1.0.0-rc3: cannot open shared object file: No such file or directory
what is the problem ?
You program fail to find *.so. There are three method:
Create links of *.so in /usr/lib:
ln -s /where/you/install/lib/*.so /usr/lib
sudo ldconfig
Modify LD_LIBRARY_PATH:
export LD_LIBRARY_PATH=/where/you/install/lib:$LD_LIBRARY_PATH
sudo ldconfig
Modify /etc/ld.so.conf:
vim /etc/ld.so.conf
add /where/you/install/lib
sudo ldconfig

How do I open a URL from C++?

how can I open a URL from my C++ program?
In ruby you can do
%x(open https://google.com)
What's the equivalent in C++? I wonder if there's a platform-independent solution. But if there isn't, I'd like the Unix/Mac better :)
Here's my code:
#include <stdio.h>
#include <string.h>
#include <fstream>
int main (int argc, char *argv[])
{
char url[1000] = "https://www.google.com";
std::fstream fs;
fs.open(url);
fs.close();
return 0;
}
Your question may mean two different things:
1.) Open a web page with a browser.
#include <windows.h>
#include <shellapi.h>
...
ShellExecute(0, 0, L"http://www.google.com", 0, 0 , SW_SHOW );
This should work, it opens the file with the associated program. Should open the browser, which is usually the default web browser.
2.) Get the code of a webpage and you will render it yourself or do some other thing. For this I recommend to read this or/and this.
I hope it's at least a little helpful.
EDIT: Did not notice, what you are asking for UNIX, this only work on Windows.
Use libcurl, here is a simple example.
EDIT: If this is about starting a web browser from C++, you can invoke a shell command with system on a POSIX system:
system("<mybrowser> http://google.com");
By replacing <mybrowser> with the browser you want to launch.
Here's an example in windows code using winsock.
#include <winsock2.h>
#include <windows.h>
#include <iostream>
#include <string>
#include <locale>
#pragma comment(lib,"ws2_32.lib")
using namespace std;
string website_HTML;
locale local;
void get_Website(char *url );
int main ()
{
//open website
get_Website("www.google.com" );
//format website HTML
for (size_t i=0; i<website_HTML.length(); ++i)
website_HTML[i]= tolower(website_HTML[i],local);
//display HTML
cout <<website_HTML;
cout<<"\n\n";
return 0;
}
//***************************
void get_Website(char *url )
{
WSADATA wsaData;
SOCKET Socket;
SOCKADDR_IN SockAddr;
int lineCount=0;
int rowCount=0;
struct hostent *host;
char *get_http= new char[256];
memset(get_http,' ', sizeof(get_http) );
strcpy(get_http,"GET / HTTP/1.1\r\nHost: ");
strcat(get_http,url);
strcat(get_http,"\r\nConnection: close\r\n\r\n");
if (WSAStartup(MAKEWORD(2,2), &wsaData) != 0)
{
cout << "WSAStartup failed.\n";
system("pause");
//return 1;
}
Socket=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
host = gethostbyname(url);
SockAddr.sin_port=htons(80);
SockAddr.sin_family=AF_INET;
SockAddr.sin_addr.s_addr = *((unsigned long*)host->h_addr);
cout << "Connecting to "<< url<<" ...\n";
if(connect(Socket,(SOCKADDR*)(&SockAddr),sizeof(SockAddr)) != 0)
{
cout << "Could not connect";
system("pause");
//return 1;
}
cout << "Connected.\n";
send(Socket,get_http, strlen(get_http),0 );
char buffer[10000];
int nDataLength;
while ((nDataLength = recv(Socket,buffer,10000,0)) > 0)
{
int i = 0;
while (buffer[i] >= 32 || buffer[i] == '\n' || buffer[i] == '\r')
{
website_HTML+=buffer[i];
i += 1;
}
}
closesocket(Socket);
WSACleanup();
delete[] get_http;
}
I was having the exact same problem in Windows.
I noticed that in OP's gist, he uses string("open ") in line 21, however, by using it one comes across this error:
'open' is not recognized as an internal or external command
After researching, I have found that open is MacOS the default command to open things. It is different on Windows or Linux.
Linux: xdg-open <URL>
Windows: start <URL>
For those of you that are using Windows, as I am, you can use the following:
std::string op = std::string("start ").append(url);
system(op.c_str());
I've had MUCH better luck using ShellExecuteA(). I've heard that there are a lot of security risks when you use "system()". This is what I came up with for my own code.
void SearchWeb( string word )
{
string base_URL = "http://www.bing.com/search?q=";
string search_URL = "dummy";
search_URL = base_URL + word;
cout << "Searching for: \"" << word << "\"\n";
ShellExecuteA(NULL, "open", search_URL.c_str(), NULL, NULL, SW_SHOWNORMAL);
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p.s. Its using WinAPI if i'm correct. So its not multiplatform solution.
There're already answers for windows. In linux, I noticed open https://www.google.com always launch browser from shell, so you can try:
system("open https://your.domain/uri");
that's say
system(("open "s + url).c_str()); // c++
https://linux.die.net/man/1/open
C isn't as high-level as the scripting language you mention. But if you want to stay away from socket-based programming, try Curl. Curl is a great C library and has many features. I have used it for years and always recommend it. It also includes some stand alone programs for testing or shell use.
For linux environments, you can use xdg-open. It is installed by default on most distributions. The benefit over the accepted answer is that it opens the user's preferred browser.
$ xdg-open https://google.com
$ xdg-open steam://run/10
Of course you can wrap this in a system() call.
Create a function and copy the code using winsock which is mentioned already by Software_Developer.
For Instance:
#ifdef _WIN32
// this is required only for windows
if (WSAStartup(MAKEWORD(2,2), &wsaData) != 0)
{
//...
}
#endif
winsock code here
#ifdef _WIN32
WSACleanup();
#endif

qt creator error: LNK 2019: unresolved external symbol “__declspec(dllimport) public: void__thiscall

I would like to know why I am getting these errors.I am using Qt 5.0.2 and msvc2010 compiler. It runs normally when i delete the blah function.
I'm not an expert programmer at all, please answer me as if i dont know anything, thank you!
Error:
http://puu.sh/3m6Qr.png
My codes below:
.pro
QT += core gui
QT += widgets
QT += network
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
TARGET = guangdong
TEMPLATE = app
SOURCES += main.cpp\
login.cpp
HEADERS += login.h
FORMS += login.ui
login.cpp
#include "login.h"
#include "ui_login.h"
#include <QtSql/QSql>
#include <QtSql/QSqlDatabase>
#include <QDebug>
#include <Query.h>
#include <QString>
#include <QtSql/QSqlQuery>
#include <QtNetwork/QNetworkInterface>
login::login(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::login)
{
ui->setupUi(this);
blah();
}
login::~login()
{
delete ui;
}
void login::blah()
{
// QSqlQuery query;
QSqlDatabase db = QSqlDatabase::addDatabase("QMYSQL");
db.setHostName("blah");
db.setDatabaseName("blah");
db.setUserName("blah");
db.setPassword("blah");
bool ok = db.open();
if ( ok ) {
ui->label->setText("databaseopen");
db.close();
}
else
ui->label->setText("Error opening");
}
main.cpp
#include "login.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
login w;
w.show();
return a.exec();
}
EDIT: I added Qt += sql and #include but now i get this error.
Error:
http://puu.sh/3maq2.png
The error messages say the linker cannot find the external symbols defined in the header <QtSql/QSqlQuery>. You need to link against QtSql library/module: http://qt-project.org/doc/qt-5.0/qtsql/qtsql-index.html
QT += core gui
QT += widgets
QT += network
QT += sql
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
TARGET = guangdong
TEMPLATE = app
SOURCES += main.cpp\
login.cpp
HEADERS += login.h
FORMS += login.ui
Run qmake after you update your .pro file and also you are adding the widgets module twice and that can also cause troubles:
QT += core gui
//QT += widgets delete this line Qt4 doesn't have widgets and for Qt 5 the widgets are added at the last line
QT += network
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
for more complicated stuff you can use *= operator to ensure that a value is added to the list of values in a variable only once.

C++ Builder STL for OS X fails?

Has anybody tried something as simple as #include <vector> in an application for the Mac compiled with XE2?
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Simply adding #include <vector> to a new fire monkey HD app, I get build failures:
[BCC32 Error] cstdlib(43): E2015 Ambiguity between 'ldiv_t' and 'Posix::Stdlib::ldiv_t'
Full parser context
Unit1.cpp(7): #include C:\Program Files\Embarcadero\RAD Studio\9.0\include\boost_1_39\boost\tr1\tr1\vector
vector(16): #include C:\Program Files\Embarcadero\RAD Studio\9.0\include\boost_1_39\boost/tr1/detail/config_all.hpp
config_all.hpp(48): #include c:\program files\embarcadero\rad studio\9.0\include\dinkumware\cstdlib
cstdlib(32): namespace std
From the code:
//---------------------------------------------------------------------------
#include <fmx.h>
#pragma hdrstop
#include "Unit1.h"
#include <vector>
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.fmx"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
: TForm(Owner)
{
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//---------------------------------------------------------------------------
Solution from Embarcadero (this is for update 2 only):
Open cstdlib in the [RADStudioXE2]\include\dinkumware directory
Take line 49: using _CSTD size_t; using _CSTD div_t; using _CSTD ldiv_t;
Move it above the "#if defined" block right above it (line 33)
The STL can now be compiled into an FMX C++ application
try removing $(CG_BOOST_ROOT) from your include paths.