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  1. 16th July 2007, 10:57 #2
    rajesh's Avatar
    rajesh
    rajesh is offline Intermediate user
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    Default Re: Hex viewer in qt?

    you can make hexviewer by using text edit event filter. I am send you code of hex viewer from my project.
    Qt Code: 
    1. bool ProgramMemoryWindow::eventFilter(QObject *target, QEvent *event)
    2. {
    3.    if (target == m_pProgamWindow) 
    4.    {
    5.                         if (event->type() == QEvent::KeyPress)
    6.       {
    7.          QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
    8.  
    9.                                     if ((keyEvent->key() == Qt::Key_unknown)||(keyEvent->key() == 0))
    10.                                     {
    11.                                                 return true;
    12.                                     }
    13.  
    14.                                     QString str1 = keyEvent->text();
    15.                                     if (str1)
    16.                                     {
    17.  
    18.                                                 char ch = *(str1.ascii());
    19.                                                 bool res = true; 
    20.                                                 if (((ch <= '9' && ch >= '0') | (ch <= 'F' && ch >= 'A') | 
    21.                                                                          (ch <= 'f' && ch >= 'a')))
    22.                                                 {
    23.                                                             int para,index;
    24.                                                             static char chcnt=0;
    25.                                                             chcnt++;
    26.                                                             m_pProgamWindow->getCursorPosition(&para,&index);
    27.                                                             if ((index % 3 == 0))
    28.                                                             {
    29.                                                                         m_pProgamWindow->setCursorPosition(para,index+1);
    30.                                                                         chcnt = 0;
    31.                                                             }
    32.                                                             if ((index == 54) && (para == 15))
    33.                                                             {
    34.                                                                         return true;
    35.                                                             }
    36.                                                             m_pProgamWindow->getCursorPosition(&para,&index);
    37.                                                             char value;
    38.                                                             getAddressFromPosition(para,index,ch,&value);
    39.                                                             char str[4];
    40.                                                             if ((value<0x7f)&&(value>0x1F))
    41.                                                                         str[0]= value;
    42.                                                             else
    43.                                                                         str[0] = 0x2e;
    44.                                                             str[1]= '\0';
    45.                                                             unsigned int asciipos = ((index - 7)/3)+55;
    46.                                                             m_pProgamWindow->setSelection(para,asciipos,para,asciipos+1,0);
    47.                                                             m_pProgamWindow->removeSelectedText(0);
    48.                                                             m_pProgamWindow->setColor(QColor(255,0,0));
    49.                                                             m_pProgamWindow->insertAt(str,para,asciipos);
    50.                                                             m_pProgamWindow->selectAll(false);
    51.                                                             m_pProgamWindow->setCursorPosition(para,index);
    52.                                                             m_pProgamWindow->setSelection(para,index,para,index+1,0);
    53.                                                             m_pProgamWindow->setColor(QColor(255,0,0));
    54.                                                             return QWidget::eventFilter(target, event);
    55.                                                 }
    56.                                     }
    57.                                     if ((keyEvent->key() == Qt::Key_Left )||(keyEvent->key() == Qt::Key_Up )||
    58.                                                 (keyEvent->key()==Qt::Key_Right )||(keyEvent->key()==Qt::Key_Down ))
    59.                                     {
    60.                                                 return QWidget::eventFilter(target, event);
    61.                                     }
    62.                                     if ((keyEvent->key()==Qt::Key_Enter)||(keyEvent->key()==Qt::Key_Return))
    63.                                     {
    64.                                                 saveContents();
    65.                                                 return true;
    66.                                     }
    67.                                     if ((keyEvent->key()==Qt::Key_Escape))
    68.                                     {
    69.                                                 revertData();
    70.                                                 return true;
    71.                                     }
    72.                                     if ((keyEvent->key()==Qt::Key_PageDown))
    73.                                     {
    74.                                                 onDownScrollClicked();
    75.                                                 return true;
    76.                                     }
    77.                                     if ((keyEvent->key()==Qt::Key_PageUp))
    78.                                     {
    79.                                                 onUpScrollClicked();
    80.                                                 return true;
    81.                                     }
    82.                                     return true;
    83.                         }
    84.                         if ((event->type()== QEvent::Wheel))
    85.                         {
    86.                                     return true;
    87.                         }
    88.                         if(!((event->type()== 10)||(event->type()== 11)||(event->type()== 24)||(event->type()== 25)||(event->type()== 12)))
    89.                                     return QWidget::eventFilter(target, event);
    90.  
    91.             }
    92.  
    93.             return QWidget::eventFilter(target, event);
    94.  
    95. }
    To copy to clipboard, switch view to plain text mode 
    Last edited by jacek; 16th July 2007 at 13:05. Reason: changed [html] to [code]
    Rajesh Kumar Singh
    Bangalore, India.
    Qt Search
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