A brief introduction to QT 37 Interface text display dynamic

First, Introduction
Recent project requirements: When the interface is displayed, all static data is displayed in a dynamic refresh manner. Add a couple of timer Qtimer to the original code, and handle the Showevent and Hideevent events (the overall comparison is simpler).

Second, detailed 1, Code(1) processbardynamic.h

#ifndef processbardynamic_h #define PROCESSBARDYNAMIC_H #include <QtGui> class Processbardynamic:public Qwidget
    {q_object public:processbardynamic (qwidget *parent = 0);

~processbardynamic ();
    Protected:void paintevent (qpaintevent *event);
    void Resizeevent (Qresizeevent * event);
    void Mousepressevent (Qmouseevent *event);
    void Mousemoveevent (Qmouseevent *event);
    void Mousereleaseevent (Qmouseevent *event);
    void Showevent (Qshowevent *event);

void Hideevent (Qhideevent *event);
    Private Slots:void Slotupdatetimer ();

void Slotmoneytimer ();
    Private:qpoint BeginDrag;
    BOOL Bpressflag;
    Qlabel *firstlabel;
    Qlabel *secondlabel;
    Qpushbutton *closebtn;
    Qtimer *moneytimer;
    Qtimer *updatetimer;
    Qprogressbar *progressbar;
    Qlabel *progressbarlabel;

    Qpushbutton *surebtn;
    int currentmoneyvalue;
    int currentnumvalue;
int currentpercentvalue;

};
 #endif//Processbardynamic_h

(2) Processbardynamic.cpp

#include "processbardynamic.h" #define Maxmoney 660066 #define MAXNUM #define Maxpercent::P processbardynamic Bardynamic (Qwidget *parent): Qwidget (parent, Qt::framelesswindowhint), Bpressflag (false), Currentmoneyvalue
    (0), Currentnumvalue (0), Currentpercentvalue (0) {Resize (300, 150);
    Setautofillbackground (FALSE);
    Qpalette pal = palette ();
    Pal.setcolor (Qpalette::background, Qcolor (0xff,0xff,0xff,0xff));

    SetPalette (PAL);
    Firstlabel = new Qlabel (this); Firstlabel->setalignment (Qt::alignleft |
    Qt::alignvcenter); Firstlabel->settext (tr ("<font color= ' #666666 ' >%1</font><font color= ' #FC822B ' size=4><b

    >$%2</b></font> "). Arg (TR (" Remainingmoney ")). Arg (" 0 "));
    Secondlabel = new Qlabel (this); Secondlabel->setalignment (Qt::alignright |
    Qt::alignvcenter); Secondlabel->settext (QString <font color= ' #666666 ' >%1</font><font color= ' #FC822B ' size=4> <b>%2&Lt;/b></font><font color= ' #666666 ' >%3</font>). Arg (TR ("input")). Arg (0). Arg (TR ("number"));
    ProgressBar = new Qprogressbar (this);
    Progressbar->setrange (0, 100);
    Progressbar->reset ();
    Progressbar->setvalue (0);

    Progressbar->settextvisible (FALSE);
                              Progressbar->setstylesheet ("Qprogressbar{border:none;background: #E5E5E5; border-radius:2px;}"
    "Qprogressbar::chunk{background: #009DD6; border-radius:2px;}");
    Progressbarlabel = new Qlabel (this);
    Progressbarlabel->setstylesheet ("Color: #333333;");
    Progressbarlabel->setalignment (Qt::aligncenter);
    Progressbarlabel->setfont (Qfont ("Arial", Qfont::normal));

    Progressbarlabel->settext (QString ("%1%"). Arg (0));
    SUREBTN = new Qpushbutton (this);
    Surebtn->setfont (Qfont ("Arial", Qfont::normal));
                    Surebtn->setstylesheet ("Qpushbutton{border:none;color: #FFFFFF; background: #009DD6; border-radius:4px;}"       "Qpushbutton:hover{border-color:green;background: #00ACF0;}");
    Surebtn->setfocuspolicy (Qt::nofocus);

    Surebtn->settext (TR ("sure"));
    Moneytimer = new Qtimer (this);
    Moneytimer->setinterval (1);
    Connect (Moneytimer, SIGNAL (timeout ()), this, SLOT (Slotmoneytimer ()));
    Updatetimer = new Qtimer (this);
    Updatetimer->setinterval (20);

    Connect (Updatetimer, SIGNAL (timeout ()), this, SLOT (Slotupdatetimer ()));
    CLOSEBTN = new Qpushbutton (this);
                            Closebtn->setstylesheet ("Qpushbutton{background-image:url (:/close.png); border-style:flat;}"
    "Qpushbutton:hover{background-image:url (:/close_hover.png); border-style:flat;}");
    Closebtn->setfocuspolicy (Qt::nofocus);
Connect (closebtn, SIGNAL (clicked ()), this, SLOT (Close ()));
    } processbardynamic::~processbardynamic () {if (updatetimer->isactive ()) {updatetimer->stop ());
    } if (Moneytimer->isactive ()) {moneytimer->stop ();
   } Currentmoneyvalue = 0;
    Currentnumvalue = 0;
Currentpercentvalue = 0; } void Processbardynamic::slotupdatetimer () {if (Currentnumvalue <= maxnum) {Secondlabel->settext (QSt Ring ("<font color= ' #666666 ' >%1</font><font color= ' #FC822B ' size=4><b>%2</b></
    Font><font color= ' #666666 ' >%3</font>). Arg (TR ("input")). Arg (Currentnumvalue). Arg (TR ("number"));
        } if (Currentpercentvalue <= maxpercent) {progressbar->setvalue (currentpercentvalue);
    Progressbarlabel->settext (QString ("%1%"). Arg (Currentpercentvalue));
    } if (Currentnumvalue > Maxnum && currentpercentvalue > Maxpercent) {updatetimer->stop ();
    } currentnumvalue++;
currentpercentvalue++;
        } void Processbardynamic::slotmoneytimer () {if (Currentmoneyvalue <= maxmoney) {QString value = "";
        int number = Currentmoneyvalue; if (number < 1000) {value =Qstring::number (number);
            else if (number < 1000 * 1000) {value = Qstring::number (number/1000);
            Value + = ",";
            QString temp = "";
            temp = Qstring::number (number%1000);
            temp = temp.rightjustified (3, ' 0 ');
            Temp.fill (' 0 ', 3);
            Temp.push_back (Qstring::number (number));
            temp = Temp.right (3);
        Value + = QString ("%1"). Arg (number%1000, 3, Qchar (' 0 '));
            else if (number < 1000*1000*1000) {value = Qstring::number (number/(1000*1000));
            Value + = ",";
            Number = number% (1000*1000);
            Value + = QString ("%1"). Arg (number/1000, 3, Qchar (' 0 '));
            Value + = ",";

        Value + = QString ("%1"). Arg (number%1000, 3, Qchar (' 0 ')); Firstlabel->settext (tr ("<font color= ' #666666 ' >%1</font><font color= ' #FC822B ' SIZE=4&GT;&LT;B&G T;$%2</b></font> "). Arg(TR ("Remainingmoney")). Arg (value));
    } if (Currentmoneyvalue = = Maxmoney) {moneytimer->stop ();
    } Currentmoneyvalue = Currentmoneyvalue + 500;
    if (Currentmoneyvalue > Maxmoney) {currentmoneyvalue = Maxmoney;

} void Processbardynamic::p aintevent (qpaintevent *event) {qwidget::p aintevent (event);}
    void Processbardynamic::resizeevent (Qresizeevent *event) {firstlabel->setgeometry (15, 25, 150, 30);
    Secondlabel->setgeometry (165, 25, 120, 30);
    Progressbar->setgeometry (15, 73, 230, 5);
    Progressbarlabel->setgeometry (255, 62, 30, 25);
    Surebtn->setgeometry (15, 90, 270, 45);
    Closebtn->setgeometry (Width ()-15, 5, 10, 10);
    Move ((qapplication::d esktop ()->width ()-width ())/2, (qapplication::d esktop ()->height ()-height ())/2);
Qwidget::resizeevent (event);
    } void Processbardynamic::showevent (Qshowevent *event) {currentmoneyvalue = 0;
    Currentnumvalue = 0; Currentpercentvalue = 0;
    Updatetimer->start ();
    Moneytimer->start ();
Qwidget::showevent (event); } void Processbardynamic::hideevent (Qhideevent *event) {if (updatetimer->isactive ()) {updatetimer->st
    OP ();
    } if (Moneytimer->isactive ()) {moneytimer->stop ();
} qwidget::hideevent (event);
    } void Processbardynamic::mousepressevent (Qmouseevent *event) {Bpressflag = true;
    BeginDrag = Event->pos ();
Qwidget::mousepressevent (event); } void Processbardynamic::mousemoveevent (Qmouseevent *event) {if (Bpressflag) {Qpoint relapos (qcursor::p OS (
        )-BeginDrag);
    Move (Relapos);
} qwidget::mousemoveevent (event);
    } void Processbardynamic::mousereleaseevent (Qmouseevent *event) {Bpressflag = false;
Qwidget::mousereleaseevent (event);
 }

(3) Main.cpp

#include "processbardynamic.h"
#include <QApplication>

int main (int argc, char *argv[])
{
    Qapplication A (argc, argv);
    Qtranslator Translator;
    Translator.load ("Processbardynamic.qm", ":/");
    A.installtranslator (&translator);
    Processbardynamic W;
    W.show ();

    return a.exec ();
}

(4) Run (hide and display will be animated again)


Third, summary(1) The above code is not very difficult, only provide a way to display. The test code has been uploaded to csdn:http://download.csdn.net/detail/taiyang1987912/9347839.
(2) If there are suggestions, please leave a message, thank you first.