use varible for label

ok how do i turn this...

Code:

    ui->label_2->setVisible(true);
    ui->label_3->setVisible(false);
    ui->label_4->setVisible(true);
    ui->label_5->setVisible(false);
    ui->label_6->setVisible(true);
    ui->label_7->setVisible(false);
    ui->label_8->setVisible(true);
    ui->label_9->setVisible(false);
    ui->label_10->setVisible(true);
    ui->label_11->setVisible(false);
    ui->label_12->setVisible(true);
    ui->label_13->setVisible(false);
    ui->label_14->setVisible(true);
    ui->label_15->setVisible(false);

into this

Code:

for (x=0;x<16;x++)
      {           
           ui->label_(X)->setVisible(true);
           ui->label_(X+1)->setVisible(false);
      }

need to have the name ("label_" + X)everything i know i tried, i have 641 lables that change states and i dont want to have to "manualy" switch each onebeing able to make a function for it would be the best!Thanks

Why don't you use an array, or a std::map or std::unordered_map to map label numbers to labels?

was thinking of using an array later on, but atm, just stuck trying to use a variable in the "ui->label_" part!

forgot to mention, if it makes a difference i am using QT!

Just use an array or some suitable container. If not, you'll just be stuck until later on.

there is no way to dynamically do exactly what you want at run time. at best, you could write a code generator program, but like laserlight says, use a vector or an array or some other suitable container.

yeah wrote a c program to make my c++ program! lol

just figured there was an easier way to control visible true/false with a variable for the name itself.

Originally Posted by Crossfire

yeah wrote a c program to make my c++ program!

I've done exactly that. I have a program that generates one class per table in a mysql database, and writes one header with the class definitions and one source file and the member function implementations. it takes about 30 seconds to run for my production database, when doing it by hand would take many many hours, and is far less error-prone than hand-writing queries for every time I want to perform a database operation. it's a lot of fun writing code that writes code.

a std::unordered_map would probably be the best solution. if you don't have access to a C++11 compiler yet, you can use std::map.

yeah for all 320 pushbuttons, i did this ran it buttonmaker.exe > buttonmaker.txt then just copied and pasted!!!

Code:

#include<stdio.h>
#include<stddef.h>
#include<stdlib.h>
int main(void)
{
 int X,on,off,pushbutton,relay,end;
 
 
 
 printf("Enter PushButton Number to start: ");
 scanf("%i",&X);
 printf("Enter PushButton Number to end: ");
 scanf("%i",&end);
 printf("\n\n\n");
 for (pushbutton=X;pushbutton<=end;pushbutton++)
 {
 
 relay = pushbutton-1;
 off = relay*2;
 
 on = off+1;
 
 printf("void RelayPanel::on_pushButton_%i_clicked()\n",pushbutton);
 printf("{\n");
 printf("\tToggleRelay(%i);\n",relay);
    printf("\tif (Status == 0)\n");
    printf("\t\t{\n");
 printf("\t\t\tui->label_%i->setVisible(true);\n",off);
 printf("\t\t\tui->label_%i->setVisible(false);\n",on);
 printf("\t\t}\n");
 printf("\telse\n");
    printf("\t\t{\n");
 printf("\t\t\tui->label_%i->setVisible(false);\n",off);
 printf("\t\t\tui->label_%i->setVisible(true);\n",on);
 printf("\t\t}\n");
 printf("}\n\n");
}

The insanity of that impresses me.

Now go do it using an array