LinuxQuestions.org - gtk - How to pass in a parameter

OK. Here is what I have. 3 files plus Compiler output.
BTW A smiley creeps in to the code snippets where I have a : followed by an o.

Code:

//$Id: ElTimeBody.h,



/* 

 *

 * This is the .h file for the Elapsed Time module

 *

 */



#ifndef GTKMM_ELAPSEDTIME_H

#define GTKMM_ELAPSEDTIME_H



#include <gtkmm/button.h>

#include <gtkmm/window.h>



class ElapsedTime : public Gtk::Window

{



public:

  ElapsedTime();

  virtual ~ElapsedTime();

  void setFileName(char FileName) {strcpy(_FileName, FileName);}



private:

  char _FileName[300];

  time_t mtimeStartTime;



protected:

  //Signal handlers:

  virtual void on_button_clicked();



  //Member widgets:

  Gtk::Button m_button;

};





#endif // GTKMM_ELAPSEDTIME_H

Code:

//$Id: ElTimeBody.cc



/* 

 *

 * This program is the Elapsed Time module.

 * When instantiated, it creates a button and places it in the Window.

 *

 * When the button is pressed, it will calculate the elapsed time since the

 * program started (in HH:MM:SS) and output that time.

 * It is supposed to output to a file, whosw name is passed in as a parameter

 * to the main program.

 *

 */



#include "ElTimeBody.h"

#include <iostream>

#include <time.h>



  time_t mtimeStartTime;



ElapsedTime::ElapsedTime()

: m_button("Press me at Significant Times")  // creates a new button with the label "Press me at Significant Times".

{

  // Sets the border width of the window.

  set_border_width(30);

  time( &mtimeStartTime );

//  strcpy(szFileName, cFilename);



  // When the button receives the "clicked" signal, it will call the

  // on_button_clicked() method. The on_button_clicked() method is defined below.

  m_button.signal_clicked().connect(sigc::mem_fun(*this, &ElapsedTime::on_button_clicked));



  // This packs the button into the Window (a container).

  add(m_button);



  // The final step is to display this newly created widget...

  m_button.show();

}



ElapsedTime::~ElapsedTime()

{

}







void ElapsedTime::on_button_clicked()

{

  time_t ltimeTimeNow;

  double ldETime;

  long llETime;

  int liSeconds, liMinutes, liMinsLeft, liHours;

  char szBuffer[20];

  FILE *list;



  time ( &ltimeTimeNow );

  ldETime = difftime(ltimeTimeNow, mtimeStartTime);

  llETime = ldETime;        // convert time to integer format (long)

  liMinsLeft = llETime / 60;        // Calculate complete minutes

  liSeconds = llETime - (liMinsLeft * 60); // Calculate seconds

  liHours = liMinsLeft / 60;        //Calculate Hours

  liMinutes = liMinsLeft - (liHours * 60);



  list = fopen(_FileName, "a");

  fprintf(list, "%02d:%02d:%02d\n", liHours, liMinutes, liSeconds);

  fclose(list);

  

}

Code:

//$Id: ElTimemain.cc

/* 

 *

 * This program is the main program

 * It is supposed to accept one parameter and pass it on to the

 * Elapsed Time module, where it will use it as the File Name

 * to which to output timings.

 *

 */



#include <gtkmm/main.h>

#include "ElTimeBody.h"

#include <time.h>





int main (int argc, char *argv[])

{

  char szTemp[300];

  Gtk::Main kit(argc, argv);



//  strcpy(szTemp, &argv[1][0]);



  ElapsedTime ElapsedTime;

//  ElapsedTime.setFileName(szTemp);

  Gtk::Main::run(ElapsedTime); //Shows the window and returns when it is closed.



  return 0;

}

Code:

ElTimeBody.h: In member function �void ElapsedTime::setFileName(char)�:

ElTimeBody.h:21: error: invalid conversion from �char� to �const char*�

ElTimeBody.h:21: error:  initializing argument 2 of �char* strcpy(char*, const char*)�

ElTimeBody.cc: In member function �virtual void ElapsedTime::on_button_clicked()�:

ElTimeBody.cc:57: warning: converting to �long int� from �double�

ElTimeBody.h: In member function �void ElapsedTime::setFileName(char)�:

ElTimeBody.h:21: error: invalid conversion from �char� to �const char*�

ElTimeBody.h:21: error:  initializing argument 2 of �char* strcpy(char*, const char*)�

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