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Thread: initial comboboxes at Qt using Ui

  1. 24th November 2013, 13:18 #1
    citix
    citix is offline Beginner
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    Nov 2013
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    Default initial comboboxes at Qt using Ui

    I am new at Qt. I searched for some hours now but I'm not able to find a solution.

    My setup is as follows:


    main.cpp
    projectQt.cpp
    projectQt.h
    tab1.h
    tab1.cpp
    tab2.h
    tab2.cpp
    projectQt.ui



    I want to create a project with Ui file. At the Ui file, i have three comboBox and two Apply button and at the tab1.cpp and tab2.cpp, I want to add initial Items of the comboboxes. If the user click the apply buttons, run the "OnBtnApplyClicked" methods. I have error of the project. please help me.

    main.cpp



    Qt Code: 
    1. #include "projectQt.h"
    2.  
    3.         #include <QtWidgets/QApplication>
    4.  
    5.         int main(int argc, char *argv[])
    6.         {
    7.         	QApplication a(argc, argv);
    8.         	ProjectQt w;
    9.         	w.show();
    10.         	return a.exec();
    11.         }
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    projectQt.ui file:



    Qt Code: 
    1. <?xml version="1.0" encoding="UTF-8"?>
    2.     <ui version="4.0">
    3.      <class>ProjectQtClass</class>
    4.      <widget class="QMainWindow" name="ProjectQtClass">
    5.       <property name="geometry">
    6.        <rect>
    7.         <x>0</x>
    8.         <y>0</y>
    9.         <width>900</width>
    10.         <height>900</height>
    11.        </rect>
    12.       </property>
    13.       <property name="windowTitle">
    14.        <string>ProjectQt</string>
    15.       </property>
    16.       <widget class="QWidget" name="centralWidget">
    17.        <widget class="QTabWidget" name="tabWidget">
    18.         <property name="geometry">
    19.          <rect>
    20.           <x>10</x>
    21.           <y>40</y>
    22.           <width>800</width>
    23.           <height>800</height>
    24.          </rect>
    25.         </property>
    26.         <property name="currentIndex">
    27.          <number>1</number>
    28.         </property>
    29.         <widget class="QWidget" name="IDC_FORM_TAB_1">
    30.          <attribute name="title">
    31.           <string>M001</string>
    32.          </attribute>
    33.          <widget class="QLabel" name="IDC_LBL_1_0">
    34.           <property name="geometry">
    35.            <rect>
    36.             <x>10</x>
    37.             <y>40</y>
    38.             <width>124</width>
    39.             <height>13</height>
    40.            </rect>
    41.           </property>
    42.           <property name="text">
    43.            <string>COMBO1</string>
    44.           </property>
    45.          </widget>
    46.          <widget class="QComboBox" name="IDC_CMB_1_0">
    47.           <property name="geometry">
    48.            <rect>
    49.             <x>120</x>
    50.             <y>40</y>
    51.             <width>69</width>
    52.             <height>22</height>
    53.            </rect>
    54.           </property>
    55.          </widget>
    56.          <widget class="QComboBox" name="IDC_CMB_1_1">
    57.           <property name="geometry">
    58.            <rect>
    59.             <x>120</x>
    60.             <y>90</y>
    61.             <width>69</width>
    62.             <height>22</height>
    63.            </rect>
    64.           </property>
    65.          </widget>
    66.          <widget class="QPushButton" name="IDC_BTN_1_Apply">
    67.           <property name="geometry">
    68.            <rect>
    69.             <x>180</x>
    70.             <y>174</y>
    71.             <width>75</width>
    72.             <height>23</height>
    73.            </rect>
    74.           </property>
    75.           <property name="text">
    76.            <string>Apply</string>
    77.           </property>
    78.          </widget>
    79.          <widget class="QLabel" name="IDC_LBL_1_1">
    80.           <property name="geometry">
    81.            <rect>
    82.             <x>10</x>
    83.             <y>90</y>
    84.             <width>124</width>
    85.             <height>13</height>
    86.            </rect>
    87.           </property>
    88.           <property name="text">
    89.            <string>COMBO2</string>
    90.           </property>
    91.          </widget>
    92.         </widget>
    93.         <widget class="QWidget" name="IDC_FORM_TAB_2">
    94.          <attribute name="title">
    95.           <string>M002</string>
    96.          </attribute>
    97.          <widget class="QLabel" name="IDC_LBL_2_0">
    98.           <property name="geometry">
    99.            <rect>
    100.             <x>0</x>
    101.             <y>30</y>
    102.             <width>104</width>
    103.             <height>13</height>
    104.            </rect>
    105.           </property>
    106.           <property name="text">
    107.            <string>COMBO3</string>
    108.           </property>
    109.          </widget>
    110.          <widget class="QComboBox" name="IDC_CMB_2_0">
    111.           <property name="geometry">
    112.            <rect>
    113.             <x>100</x>
    114.             <y>30</y>
    115.             <width>69</width>
    116.             <height>22</height>
    117.            </rect>
    118.           </property>
    119.          </widget>
    120.          <widget class="QPushButton" name="IDC_BTN_2_Apply">
    121.           <property name="geometry">
    122.            <rect>
    123.             <x>100</x>
    124.             <y>70</y>
    125.             <width>75</width>
    126.             <height>23</height>
    127.            </rect>
    128.           </property>
    129.           <property name="text">
    130.            <string>Apply</string>
    131.           </property>
    132.          </widget>
    133.         </widget>
    134.        </widget>
    135.       </widget>
    136.       <widget class="QMenuBar" name="menuBar">
    137.        <property name="geometry">
    138.         <rect>
    139.          <x>0</x>
    140.          <y>0</y>
    141.          <width>900</width>
    142.          <height>21</height>
    143.         </rect>
    144.        </property>
    145.       </widget>
    146.       <widget class="QToolBar" name="mainToolBar">
    147.        <attribute name="toolBarArea">
    148.         <enum>TopToolBarArea</enum>
    149.        </attribute>
    150.        <attribute name="toolBarBreak">
    151.         <bool>false</bool>
    152.        </attribute>
    153.       </widget>
    154.       <widget class="QStatusBar" name="statusBar"/>
    155.      </widget>
    156.      <layoutdefault spacing="6" margin="11"/>
    157.      <resources>
    158.       <include location="projectQt.qrc"/>
    159.      </resources>
    160.      <connections/>
    161.     </ui>
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    projectQt.cpp file:


    Qt Code: 
    1. #include "projectQt.h"
    2.      #include "tab1.h"
    3.      #include "tab2.h"
    4.      #include "ui_projectQt.h"
    5.      Ctab1 *ctab1=new Ctab1;
    6.      Ctab2 *ctab2=new Ctab2;
    7.     ProjectQt::ProjectQt(QWidget *parent)
    8.     : QMainWindow(parent),
    9.     ui(new Ui::ProjectQtClass)
    10.     {
    11.     ui->setupUi(this);
    12.  
    13.     ctab1->initGUI();
    14.     ctab2->initGUI();
    15.     ui->IDC_CMB_2_0->addItem("123");
    16.  
    17.     connect(ui->IDC_BTN_1_Apply,SIGNAL(clicked()),this,SLOT(Ctab1::OnBtnApplyClicked()));
    18.      connect(ui->IDC_BTN_2_Apply,SIGNAL(clicked()),this,SLOT(Ctab2::OnBtnApplyClicked()));
    19.     }
    20.     ProjectQt::~ProjectQt()
    21.     {
    22.     }
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    projectQt.h file:




    Qt Code: 
    1. #ifndef projectQt_H
    2.     #define projectQt_H
    3.  
    4.     #include <QtWidgets/QMainWindow>
    5.     #include "ui_projectQt.h"
    6.     #include "tab1.h"
    7.     #include "tab2.h"
    8.  
    9.     class ProjectQt : public QMainWindow
    10.  
    11.     {
    12.  
    13.     Q_OBJECT
    14.  
    15.     public:
    16.  
    17.     ProjectQt(QWidget *parent = 0);
    18.     ~ProjectQt();
    19.  
    20.     Ui::ProjectQtClass *ui;
    21.  
    22.     };
    23.  
    24.     #endif // projectQt_H
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    tab1.h file:

    Qt Code: 
    1. #pragma once
    2.      #include <string>
    3.      #include "projectQt.h"
    4.      #include "ui_projectQt.h"
    5.      class Ctab1
    6.     {
    7.  
    8.     public:
    9.      Ctab1(void);
    10.      ~Ctab1(void);
    11.  
    12.     public slots:
    13.     　
    14.      void setEvents();
    15.      void initGUI();
    16.      void OnBtnApplyClicked();
    17.  
    18.     };
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    tab1.cpp file:




    Qt Code: 
    1. #include "projectQt.h"
    2.     #include "tab1.h"
    3.     #include <QTextStream>
    4.     #include "ui_projectQt.h"
    5.  
    6.     Ctab1::Ctab1(void)
    7.     {
    8.  
    9.     }
    10.  
    11.     Ctab1::~Ctab1()
    12.  
    13.     {
    14.  
    15.     }
    16.  
    17.     void Ctab1::initGUI(){
    18.  
    19.     ui->IDC_CMB_1_1->addItem("adsa");
    20.  
    21.     }
    22.  
    23.  
    24.     void Ctab1::OnBtnApplyClicked(){
    25.  
    26.     }
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    tab2.h file:


    Qt Code: 
    1. #pragma once
    2.      #include <string>
    3.      #include "projectQt.h"
    4.      #include "ui_projectQt.h"
    5.      class Ctab2
    6.     {
    7.  
    8.     public:
    9.      Ctab1(void);
    10.      ~Ctab1(void);
    11.  
    12.     public slots:
    13.     　
    14.      void setEvents();
    15.      void initGUI();
    16.      void OnBtnApplyClicked();
    17.  
    18.     };
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    tab2.cpp file:


    Qt Code: 
    1. #include "projectQt.h"
    2.     #include "tab2.h"
    3.     #include <QTextStream>
    4.     #include "ui_projectQt.h"
    5.  
    6.     Ctab2::Ctab2(void)
    7.     {
    8.  
    9.     }
    10.  
    11.     Ctab2::~Ctab2()
    12.  
    13.     {
    14.  
    15.     }
    16.  
    17.     void Ctab2::initGUI(){
    18.  
    19.     ui->IDC_CMB_2_0->addItem("adsaxxx");
    20.  
    21.     }
    22.  
    23.  
    24.     void Ctab2::OnBtnApplyClicked(){
    25.  
    26.     }
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    I cant declare ui identifier for Tab1 and Tab2. How can i declare it for Tab1.cpp and Tab2.cpp files. If i declare ui, I will solve the problem (I hope ).
    Last edited by citix; 24th November 2013 at 13:30.
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  2. 25th November 2013, 18:33 #2
    anda_skoa
    anda_skoa is offline Administrator
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    Default Re: initial comboboxes at Qt using Ui

    Your connect() lines look wrong.
    The SLOT() macro takes only the slot name and its argument types, not a class prefix. And the receiver object should probably not be "this" but the respective tab object, no?

    Cheers,
    _
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