C++ execute a UNIX command using Qt Designer?

[nugroho]

Ok---I was wondering...Is there any way to make C++ execute a UNIX command using Qt Designer?

Like, I generate crypt command in my code.

void frmUtama::cryp()
{
    QString p = leSourceFile->text();
    QString c = leFinalFile->text();    
    execute("crypt -e -des p c ");
}
 

my code's not working, is there any way to do that

[archonmagnus]

Try the system() command. For your specific case, try:

 
void frmUtama::cryp()
{
    QString p = leSourceFile->text();
    QString c = leFinalFile->text();
 
    stringstream foo;
    string bar;
 
    foo<<"crypt -e -des "<<p<<" "<<c;
    getline(foo, bar);
 
    // interpretted as "crypt -e -des <sourceFile> <finalFile>"
    system(bar.c_str());
}
 

[nugroho]

Try the system() command. For your specific case, try:

 
void frmUtama::cryp()
{
    QString p = leSourceFile->text();
    QString c = leFinalFile->text();
 
    stringstream foo;
    string bar;
 
    foo<<"crypt -e -des "<<p<<" "<<c;
    getline(foo, bar);
 
    // interpretted as "crypt -e -des <sourceFile> <finalFile>"
    system(bar.c_str());
}
 

Thanks, but I got stuck with the code when i run "make", this is the error message.
../frmutama.ui.h:42: error: ‘stringstream’ was not declared in this scope
../frmutama.ui.h:42: error: expected `;' before ‘foo’
../frmutama.ui.h:43: error: ‘string’ was not declared in this scope
../frmutama.ui.h:43: error: expected `;' before ‘bar’
../frmutama.ui.h:44: error: ‘foo’ was not declared in this scope
../frmutama.ui.h:45: error: ‘bar’ was not declared in this scope

how to solve that, i really don't know how to do

[archonmagnus]

It sounds like you'll need to put the following with the rest of your preprocessor directives:

#include <sstream>   // for stringstreams
#include <string>   // for strings
 

Once you have those included, the code should work. (I think.) ;)