C / C++ / MFC

ForNow wrote:

After I finish inserting the bytes do I have to add a null 0x00 to complete the string or string will do that automatically ?

#include <iostream>
using namespace std;

typedef unsigned char BYTE;

struct source
{
  string stmt;
  string loc;
  string addr1;
  string addr2;
};


// converts character array
// to string and returns it
string convertToString(unsigned char* a, int size)
{
    int i;
    string s = "";
    for (i = 0; i < size; i++) {
        s += a[i];
    }
    return s;
}


int main()
{

  BYTE statementnumber[4];

  source * returnsource = new source;

  returnsource->stmt = convertToString(statementnumber, 4);

  delete returnsource;
}

class CPPCONN_PUBLIC_FUNC Driver
{
protected:
  virtual ~Driver() {}
public:
  // Attempts to make a database connection to the given URL.

  virtual Connection * connect(const sql::SQLString& hostName, const sql::SQLString& userName, const sql::SQLString& password) = 0;

  virtual Connection * connect(ConnectOptionsMap & options) = 0;

  virtual int getMajorVersion() = 0;

  virtual int getMinorVersion() = 0;

  virtual int getPatchVersion() = 0;

  virtual const sql::SQLString & getName() = 0;

  virtual void setCallBack(sql::Fido_Callback &cb) = 0;

  virtual void setCallBack(sql::Fido_Callback &&cb) = 0;

  virtual void threadInit() = 0;

  virtual void threadEnd() = 0;
};

class CPPCONN_PUBLIC_FUNC Connection
{
  /* Prevent use of these */
  Connection(const Connection &);
  void operator=(Connection &);
public:

  Connection() {};

  virtual ~Connection() {};

  virtual void clearWarnings() = 0;

  virtual Statement *createStatement() = 0;

  virtual void close()  = 0;

  virtual void commit() = 0;

  virtual bool getAutoCommit() = 0;

  virtual sql::SQLString getCatalog() = 0;

  virtual Driver *getDriver() = 0;

  virtual sql::SQLString getSchema() = 0;

  virtual sql::SQLString getClientInfo() = 0;

  virtual void getClientOption(const sql::SQLString & optionName, void * optionValue) = 0;

  virtual sql::SQLString getClientOption(const sql::SQLString & optionName) = 0;

  virtual DatabaseMetaData * getMetaData() = 0;

  virtual enum_transaction_isolation getTransactionIsolation() = 0;

  virtual const SQLWarning * getWarnings() = 0;

  virtual bool isClosed() = 0;

  virtual bool isReadOnly() = 0;

  virtual bool isValid() = 0;

  virtual bool reconnect() = 0;

  virtual sql::SQLString nativeSQL(const sql::SQLString& sql) = 0;

  virtual PreparedStatement * prepareStatement(const sql::SQLString& sql) = 0;

  virtual PreparedStatement * prepareStatement(const sql::SQLString& sql, int autoGeneratedKeys) = 0;

  virtual PreparedStatement * prepareStatement(const sql::SQLString& sql, int* columnIndexes) = 0;

  virtual PreparedStatement * prepareStatement(const sql::SQLString& sql, int resultSetType, int resultSetConcurrency) = 0;

  virtual PreparedStatement * prepareStatement(const sql::SQLString& sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) = 0;

  virtual PreparedStatement * prepareStatement(const sql::SQLString& sql, sql::SQLString columnNames[]) = 0;

  virtual void releaseSavepoint(Savepoint * savepoint) = 0;

  virtual void rollback() = 0;

  virtual void rollback(Savepoint * savepoint) = 0;

  virtual void setAutoCommit(bool autoCommit) = 0;

  virtual void setCatalog(const sql::SQLString& catalog) = 0;

  virtual void setSchema(const sql::SQLString& catalog) = 0;

  virtual sql::Connection * setClientOption(const sql::SQLString & optionName, const void * optionValue) = 0;

  virtual sql::Connection * setClientOption(const sql::SQLString & optionName, const sql::SQLString & optionValue) = 0;

  virtual void setHoldability(int holdability) = 0;

  virtual void setReadOnly(bool readOnly) = 0;

  virtual Savepoint * setSavepoint() = 0;

  virtual Savepoint * setSavepoint(const sql::SQLString& name) = 0;

  virtual void setTransactionIsolation(enum_transaction_isolation level) = 0;

  /* virtual void setTypeMap(Map map) = 0; */
};

void operator=(Connection &);

coco243 wrote:

Maybe this operator:

virtual Connection * connect(const sql::SQLString& hostName, const sql::SQLString& userName, const sql::SQLString& password) = 0;

class point{
public:
int x,y;
void set (int val_x, int val_y);     // here the method declaration   
};

void point::set( int val_x, int val_y)   // here the method definition
                                         
	x = val_x;
	y = val_y;
	
}


void main()
{
	point p1;

	p1.set(10,2);    // here te call of the method

}

coco243 wrote:

in the connect method I don't see where hostName, userName and password are used.

coco243 wrote:

I saw in an example

double __stdcall fA(INT64&);

double __stdcall fA(double&);