Hi all,

When I hit the number buttons on screen it invokes the "DotShowing" function with 1 value. If I hit the delete button then invokes the "DotShowing" function with 0 value.

Everything is ok with "DotShowing" function's
Qt Code: 
  1. if(butIndex<3){ //butIndex 0 ile 4 arasında olmalı
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line. But if I change this line to this;
Qt Code: 
  1. if(butIndex<4){ //butIndex 0 ile 4 arasında olmalı
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the problem begins start. Whenever butIndex value exceeds the 4, the butIndex value changing randomly.

What is the difference if(butIndex<4) between if(butIndex<3) or what do I miss?

keypad.h variable definition;
Qt Code: 
  1. uint8_t butIndex=0;
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Qt Code: 
  1. #include "keypad.h"
  2. #include "ui_keypad.h"
  3.  
  4.  
  5.  
  6. keypad::keypad(QWidget *parent) :
  7.     QDialog(parent),
  8.     ui(new Ui::keypad)
  9. {
  10.     ui->setupUi(this);
  11.     setWindowFlags(Qt::Window | Qt::WindowTitleHint | Qt::CustomizeWindowHint); //Hide close button
  12.     setWindowFlags(Qt::FramelessWindowHint); //Remove window frame
  13.     //move(604,29); //Start at this location
  14.     move(844,340);
  15. }
  16.  
  17. keypad::~keypad()
  18. {
  19.     delete ui;
  20. }
  21.  
  22. void keypad::DotShowing(uint8_t val)
  23. {
  24.  
  25.  
  26.     if(val){
  27.         if(butIndex<3){ //butIndex 0 ile 4 arasında olmalı
  28.         butIndex++;
  29.      QPixmap mypix (":/Model/SifreEkranicon/şifre-alanı-dolu.png");
  30.        switch (butIndex) {
  31.      case 1: ui->lb1->setPixmap(mypix);
  32.          break;
  33.      case 2: ui->lb2->setPixmap(mypix);
  34.             break;
  35.      case 3: ui->lb3->setPixmap(mypix);
  36.         break;
  37.      case 4: ui->lb4->setPixmap(mypix);
  38.         break;
  39.         default:
  40.         break;
  41.         }
  42.     }
  43.     }else {
  44.     if(butIndex>0){
  45.         QPixmap mypix (":/Model/SifreEkranicon/şifre-alanı.png");
  46.           switch (butIndex) {
  47.         case 1: ui->lb1->setPixmap(mypix);
  48.             break;
  49.         case 2: ui->lb2->setPixmap(mypix);
  50.                break;
  51.         case 3: ui->lb3->setPixmap(mypix);
  52.            break;
  53.         case 4: ui->lb4->setPixmap(mypix);
  54.            break;
  55.            default:
  56.            break;
  57.            }
  58.           butIndex--;
  59.     }
  60.     }
  61.  
  62. }
  63.  
  64. void keypad::on_pb15_released() //Close Button
  65. {
  66.     this->close();
  67. }
  68.  
  69. void keypad::on_pb14_released() //OK Button
  70. {
  71.     if (butValue[0] == 1)
  72.         this->close();
  73. }
  74.  
  75. void keypad::on_pb13_released() //Delete Button
  76. {
  77.     DotShowing(0); //Nokta eksilt
  78. }
  79.  
  80. void keypad::on_pb1_released() //1
  81. {
  82.     DotShowing(1); //Nokta arttır
  83.     butValue[butIndex] = 1;
  84.  
  85. }
  86.  
  87. void keypad::on_pb2_released() //2
  88. {
  89.     DotShowing(1); //Nokta arttır
  90.     butValue[butIndex] = 2;
  91. }
  92.  
  93. void keypad::on_pb3_released() //3
  94. {
  95.     DotShowing(1); //Nokta arttır
  96.     butValue[butIndex] = 3;
  97. }
  98.  
  99. void keypad::on_pb4_released() //4
  100. {
  101.     DotShowing(1); //Nokta arttır
  102.     butValue[butIndex] = 4;
  103. }
  104.  
  105. void keypad::on_pb5_released() //5
  106. {
  107.     DotShowing(1); //Nokta arttır
  108.     butValue[butIndex] = 5;
  109. }
  110.  
  111. void keypad::on_pb6_released() //6
  112. {
  113.     DotShowing(1); //Nokta arttır
  114.     butValue[butIndex] = 6;
  115. }
  116.  
  117. void keypad::on_pb7_released() //7
  118. {
  119.     DotShowing(1); //Nokta arttır
  120.     butValue[butIndex] = 7;
  121. }
  122.  
  123. void keypad::on_pb8_released() //8
  124. {
  125.     DotShowing(1); //Nokta arttır
  126.     butValue[butIndex] = 8;
  127. }
  128.  
  129. void keypad::on_pb9_released() //9
  130. {
  131.     DotShowing(1); //Nokta arttır
  132.     butValue[butIndex] = 9;
  133. }
  134.  
  135. void keypad::on_pb11_released() //0
  136. {
  137.     DotShowing(1); //Nokta arttır
  138.     butValue[butIndex] = 0;
  139. }
  140.  
  141. void keypad::on_pb10_released() //*
  142. {
  143.     DotShowing(1); //Nokta arttır
  144.     butValue[butIndex] = 10;
  145. }
  146.  
  147. void keypad::on_pb12_released() //#
  148. {
  149.     DotShowing(1); //Nokta arttır
  150.     butValue[butIndex] = 11;
  151. }
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