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Thread: creating your own SLOT

  1. 31st July 2012, 21:10 #1
    the9gamer
    the9gamer is offline Beginner
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    Default creating your own SLOT

    Hello,
    I'm creating my first app with my own slot .

    I'm trying to program an app able to manage salaries and payment
    in certain phase of the code I need to use the value choosed in the
    QComboBox "CB01" to window "Win2" in order to modify some data
    But I don't know how to transmit the value in "CB01" to the function
    "MSte()" in "Win2"
    but the way I'm using Qt4.8 with ubuntu 12.04
    and this is the code

    MainWin.cpp

    Qt Code: 
    1. #include "MainWin.h"
    2. #include "Win1.h"
    3. #include "Win2.h"
    4. #include "Win3.h"
    5.  
    6.  
    7.  
    8. MainWin::MainWin()
    9. {
    10.     //Societé
    11.  
    12.     CB01=new QComboBox();
    13.     QLabel *LAB01 = new QLabel("Societes :");
    14.     QPushButton *PB01=new QPushButton("Ajouter");
    15.     QPushButton *PB02=new QPushButton("Modifier");
    16.     QPushButton *PB03=new QPushButton("Supprimer");
    18.     HB01->addWidget(PB01);
    19.     HB01->addWidget(PB02);
    20.     HB01->addWidget(PB03);
    21.     QPushButton *PB04=new QPushButton("Recapitulation");
    22.     QVBoxLayout *VB01 = new QVBoxLayout;
    23.     VB01->addWidget(LAB01);
    24.     VB01->addWidget(CB01);
    25.     VB01->addLayout(HB01);
    26.     VB01->addWidget(PB04);
    27.  
    28.     //Employés
    29.  
    30.     CB02=new QComboBox;
    31.     QLabel *LAB02 = new QLabel("Employes :");
    32.     QPushButton *PB05=new QPushButton("Ajouter");
    33.     QPushButton *PB06=new QPushButton("Modifier");
    34.     QPushButton *PB07=new QPushButton("Supprimer");
    36.     HB02->addWidget(PB05);
    37.     HB02->addWidget(PB06);
    38.     HB02->addWidget(PB07);
    39.     QPushButton *PB08=new QPushButton("Paie");
    40.     QVBoxLayout *VB02 = new QVBoxLayout;
    41.     VB02->addWidget(LAB02);
    42.     VB02->addWidget(CB02);
    43.     VB02->addLayout(HB02);
    44.     VB02->addWidget(PB08);
    45.  
    46.     //Definition du titre de la fenetre
    47.  
    49.     MW->addLayout(VB01);
    50.     MW->addLayout(VB02);
    51.     setLayout(MW);
    52.     setWindowTitle("Easy Paie");
    53.     resize(400,250);
    54.  
    55.  
    56.     //Connextions des signaux et des slots
    57.  
    58.     connect(PB01,SIGNAL(clicked()),this,SLOT(AddSte()));
    59.     connect(PB02,SIGNAL(clicked()),this,SLOT(ModSte(CB01)));
    60.     connect(PB03,SIGNAL(clicked()),this,SLOT(DelSte()));
    61. }
    62.  
    63. void MainWin::AddSte()
    64. {
    65.     Win1 *win1=new Win1();
    66.     win1->show();
    67. }
    68.  
    69. void MainWin::ModSte(QComboBox CB01)
    70. {
    71.  
    72.     Win2 *win2(CB01)=new Win2();
    73.     win2.show();
    74. }
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    MainWin.h

    Qt Code: 
    1. #ifndef MAINWIN_H
    2. #define MAINWIN_H
    3.  
    4. #include <QtGui>
    5.  
    6. class MainWin : public QWidget
    7. {
    8.     Q_OBJECT
    9. public:
    10.     MainWin();
    11. private slots:
    12.     void AddSte();
    13.     void ModSte(QComboBox CB01);
    14.     void DelSte();
    15. private:
    16.     QComboBox *CB01;
    17.     QComboBox *CB02;
    18.     QPushButton *PB01;
    19.     QPushButton *PB02;
    20.     QPushButton *PB03;
    21.     QPushButton *PB04;
    22.     QPushButton *PB05;
    23.     QPushButton *PB06;
    24.     QPushButton *PB07;
    25.     QPushButton *PB08;
    26. };
    27.  
    28. #endif // MAINWIN_H
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    Win2.cpp


    Qt Code: 
    1. #include "Win2.h"
    2. #include <fstream>
    3. #include <string>
    4. #include <QString>
    5.  
    6. using namespace std;
    7.  
    8.  
    9. Win2::Win2()
    10. {
    11.     LE21=new QLineEdit;
    12.     QLabel *LAB21 = new QLabel("Nom societe :");
    13.     LE22=new QLineEdit;
    14.     QLabel *LAB22=new QLabel("Num CNSS :");
    15.     QPushButton *PB21=new QPushButton("Annuler");
    16.     QPushButton *PB22=new QPushButton("Modifier");
    18.     HB21->addWidget(PB21);
    19.     HB21->addWidget(PB22);
    21.     VB21->addWidget(LAB21);
    22.     VB21->addWidget(LE21);
    23.     VB21->addWidget(LAB22);
    24.     VB21->addWidget(LE22);
    25.     VB21->addLayout(HB21);
    26.     setLayout(VB21);
    27.     setWindowTitle("Modifier");
    28.  
    29.     //connect
    30.  
    31.     connect(PB21,SIGNAL(clicked()),this,SLOT(close()));
    32.     connect(PB22,SIGNAL(clicked()),this,SLOT(MSte(CB01)));
    33.  
    34.  
    35.  
    36. }
    37.  
    38.  
    39. void Win2::MSte(QComboBox CB01)
    40. {
    41.     string s1,s2,ss,ch;
    42.     QString ste,cnss;
    43.     ste=LE21->text();
    44.     cnss=LE22->text();
    45.     s1=ste.toStdString();
    46.     s2=cnss.toStdString();
    47.     ss=s2+' '+s1;
    48.     ofstream NS("NSTE");
    49.     ifstream S("STE");
    50.     while(!S.eof())
    51.     {
    52.         S>>ch;
    53.         if(ch==ss)
    54.             NS<<"FUCK"<<endl;
    55.         else
    56.             NS<<ch<<endl;
    57.     }
    58.     S.close();
    59.     NS.close();
    60.  
    61.     close();
    62.  
    63.  
    64. }
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    Win2.h

    Qt Code: 
    1. #ifndef WIN2_H
    2. #define WIN2_H
    3.  
    4. #include <QtGui>
    5.  
    6. class Win2: public QWidget
    7. {
    8.     Q_OBJECT
    9. public:
    10.     Win2(QComboBox CB01);
    11. private slots:
    12.     void MSte(QComboBox CB01);
    13.  
    14. private:
    15.     QLineEdit *LE21;
    16.     QLineEdit *LE22;
    17.     QPushButton *PB21;
    18.     QPushButton *PB22;
    19. };
    20.  
    21.  
    22. #endif // WIN2_H
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    And thank you
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  2. 1st August 2012, 00:39 #2
    ChrisW67
    ChrisW67 is offline Guru
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    Default Re: creating your own SLOT

    You access the current value of the combo box using QComboBox::currentText() and/or QComboBox::currentItem(). You expose that value to an external object by creating a public accessor function. This is standard C++.

    If you want the external object to know immediately that the combo box value has changed then you can use the one of the QComboBox::currentIndexChanged() signals to trigger the emission of a signal from the class containing the private combo box. You then arrange for that external signal to be connected to a slot in the other external object.
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