Thread: the console always appears......

Hi, I try to run a java application by exe file.....

Here's the code:

Code:

#include <stdio.h> 
#include <process.h> 

int main(void)
{
  char *my_args[4];
  
  my_args[0] = "jre1.5.0\\bin\\java.exe";
  my_args[1] = "-jar";
  my_args[2] = "SBD.jar";
  my_args[3] = NULL;
    
  spawnv( P_NOWAIT, "jre1.5.0\\bin\\java.exe", my_args);
    
  return 0;
}

The code works....... But if I click the exe file ( that is run.exe ) from Windows Explorer, the console appears first, then my java application appear..... damn the console does not want to disappear.......

How do I make the condition that when I double click the exe file ( that is run.exe ), my java application appears but the console does not appear......

What code do I have to put?????

The second question ( not related with c++ anyway ) : How do I change the appearance of this exe file in Windows explorer??? To make it clear.... I installed Adobe Reader 6 and the exe file is different with mine. The Adobe one has the icon. Mine has no icon. Mine looks like a rectangular white box with blue menubar.

Dev-Cpp 4.9.... Windows XP.....

Thank you......

Use some of the better ways of starting processes in win32, as listed in the FAQ

I have read the faq before I post my question, Salem....

system() always make the console appears......

I try to use CreateProcess function. Here's the code:

Code:

#include <windows.h> 

int main(void)
{
  char szPath[] = "jre1.5.0\\bin\\java.exe -jar SBD.jar";
  PROCESS_INFORMATION pif;  //Gives info on the thread and..
                           //..process for the new process
  STARTUPINFO si;          //Defines how to start the program

  ZeroMemory(&si,sizeof(si)); //Zero the STARTUPINFO struct
  si.cb = sizeof(si);         //Must set size of structure

  BOOL bRet = CreateProcess(
        szPath, //Path to executable file
        NULL,   //Command string - not needed here
        NULL,   //Process handle not inherited
        NULL,   //Thread handle not inherited
        FALSE,  //No inheritance of handles
        0,      //No special flags
        NULL,   //Same environment block as this prog
        NULL,   //Current directory - no separate path
        &si,    //Pointer to STARTUPINFO
        &pif);   //Pointer to PROCESS_INFORMATION

  if(bRet == FALSE)
  {
    MessageBox(HWND_DESKTOP,"Unable to start program","",MB_OK);
    return 1;
  }

  CloseHandle(pif.hProcess);   //Close handle to process
  CloseHandle(pif.hThread);    //Close handle to thread

  return 0;
}

It did not work. If I change szPath to "C:\\windows\\system32\\cacl.exe" or "jre1.5.0\\bin\\java.exe", it works..... but how do I handle the argument that program needs?????

Originally Posted by gandalf_bar

but how do I handle the argument that program needs?????

Set the first parameter of CreateProcess to NULL and use the second parameter instead to pass path and command line arguments:

Code:

#include <windows.h> 

int main(void)
{
  char szPath[] = "jre1.5.0\\bin\\java.exe -jar SBD.jar";
  PROCESS_INFORMATION pif;  //Gives info on the thread and..
                           //..process for the new process
  STARTUPINFO si;          //Defines how to start the program

  ZeroMemory(&si,sizeof(si)); //Zero the STARTUPINFO struct
  si.cb = sizeof(si);         //Must set size of structure

  BOOL bRet = CreateProcess(
        0, //Path to executable file
        szPath, //Command string - use this to pass path and args 
        NULL,   //Process handle not inherited
        NULL,   //Thread handle not inherited
        FALSE,  //No inheritance of handles
        0,      //No special flags
        NULL,   //Same environment block as this prog
        NULL,   //Current directory - no separate path
        &si,    //Pointer to STARTUPINFO
        &pif);   //Pointer to PROCESS_INFORMATION

  if(bRet == FALSE)
  {
    MessageBox(HWND_DESKTOP,"Unable to start program","",MB_OK);
    return 1;
  }
  
  CloseHandle(pif.hProcess);   //Close handle to process
  CloseHandle(pif.hThread);    //Close handle to thread

  return 0;
}

This is described in the msdn page for CreateProcess and is demonstrated in the example that accompanies it.

Hi Ken,

I have tried your code and this:

Code:

#include <windows.h>  //You need shell32.lib for this one 

int main(void)
{
  char szPath[] = "jre1.5.0\\bin\\java.exe";

  char *my_args;
  
  my_args = "-jar SBD.jar";

  HINSTANCE hRet = ShellExecute(
        HWND_DESKTOP, //Parent window
        "open",       //Operation to perform
        szPath,       //Path to program
        my_args,         //Parameters
        NULL,         //Default directory
        SW_SHOW);     //How to open

  /*
  The function returns a HINSTANCE (not really useful in this case)
  So therefore, to test its result, we cast it to a LONG.
  Any value over 32 represents success!
  */

  if((LONG)hRet <= 32)
  {
    MessageBox(HWND_DESKTOP,"Unable to start program","",MB_OK);
    return 1;
  }

  return 0;
}

They both works but the console still appears. Then I realize that I launch two process actually not one. The first is: java.exe and the second is: my java application that is SBD.jar ( GUI application ). Of course the console appears because that is java.exe application.

JSmooth solved my problem ( although it is not c++ related ).
http://jsmooth.sourceforge.net/

Try a search on it, cos I can remember a post like that one before, it might help