In my qt C++ application I create buttons dynamically based on a qstringlist I received! when I click the buttons I want to open an interface(dialo2.ui) and send another QStringList(based on that button that I click) to that interface via signals and slots. In the newly created interface the contents of the qstringlIst sent is displayed in labels! following is my code. Dialog.h #ifndef DIALOG_H #define DIALOG_H #include "QFrame" #include "QLabel" #include "QLineEdit" #include "QPushButton" #include "dialog2.h" #include <QDialog> namespace Ui { class Dialog; } class Dialog : public QDialog { Q_OBJECT public: Dialog2 dialog2; QFrame *f1; QPushButton *a; QList<QStringList> subMessageFields; QStringList buttonNames; explicit Dialog(QWidget *parent = 0); QStringList subMessages; QStringList Messages1; QStringList Messages2; ~Dialog(); private slots: void on_pushButton_clicked(); void receiveSubMessages(QStringList List); void openWindow(); void getButtons(); Dialog.cpp #include "dialog.h" #include "ui_dialog.h" #include "QFrame" #include "QLabel" #include "QLineEdit" #include "dialog2.h" Dialog::Dialog(QWidget *parent) : QDialog(parent), subMessages{"0"}, ui(new Ui::Dialog) { ui->setupUi(this); } Dialog::~Dialog() { delete ui; } void Dialog::receiveSubMessages(QStringList List){ subMessages=List; ui->comboBox->addItems(subMessages); for(int i=0;i<subMessages.size();i++){ QString Name= QString::number(i); f1 = new QFrame(); a= new QPushButton(); a->setText(subMessages[i]); a->setObjectName("Button"+Name); ui->horizontalLayout->addWidget(a); // } getButtons(); } void Dialog::getButtons(){ Messages1<<"John"<<"Smith"; Messages2<<"Hello"<<"Anne"; for(int i=0;i<subMessages.size();i++){ QPushButton *le = findChild<QPushButton*>(QString("Button%1").arg(i)); if((le)&&(i==0)){ connect(le, SIGNAL(clicked()), this, SLOT(openWindow())); connect(this,SIGNAL(sendList(QStringList)),&dialog2,SLOT(receiveList(QStringList))); emit sendList(Messages1); } else if((le)&&(i==1)){ if(connect(le, SIGNAL(clicked()), this, SLOT(openWindow()))){ connect(this,SIGNAL(sendList(QStringList)),&dialog2,SLOT(receiveList(QStringList))); emit sendList(Messages2); } } } void Dialog::openWindow(){ dialog2.exec(); } Dialog2.h #include <QDialog> #include "QFrame" #include "QLabel" #include "QLineEdit" namespace Ui { class Dialog2; } class Dialog2 : public QDialog { Q_OBJECT public: QFrame *f1; QFrame *f2; QLabel *label; QLineEdit *text; QStringList subMessageList; explicit Dialog2(QWidget *parent = 0); ~Dialog2(); private slots: void on_pushButton_clicked(); void receiveList(QStringList List); void on_pushButton_2_clicked(); Dialog2.cpp #include "dialog2.h" #include "ui_dialog2.h" Dialog2::Dialog2(QWidget *parent) : QDialog(parent), ui(new Ui::Dialog2) { ui->setupUi(this); } Dialog2::~Dialog2() { delete ui; } void Dialog2::on_pushButton_clicked() { ui->label->setText(QString::number(subMessageList.size())); } void Dialog2::receiveList(QStringList List){ subMessageList=List; for(int i=0;i<subMessageList.size();i++){ //create dynamic widgets f1 = new QFrame(); text= new QLineEdit(f2); label = new QLabel(f1); ui->verticalLayout->addWidget(f1); ui->verticalLayout_2->addWidget(f2); label->setText(subMessageList[i]); } } Here I have supported 2 buttons dynamically created( i=0 and i=1) But when I click the button which resembles i=0 I get the labels Hello, Anne , John, Smith ,John, Smith! I want only to see Hello Anne in the labels since that button only emits Messages1 qstringList! How can I achieve this?

@ Kushan said in sending QStringLists from dynamically created buttons using signals and slots : for(int i=0;i<subMessageList.size();i++){ Well, you're adding the complete list. If you only want to add part of it then do so.

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sending QStringLists from dynamically created buttons using signals and slots

Unsolved General and Desktop

21 Posts 4 Posters 7.1k Views 2 Watching

S SGaist

In the case mentioned by @mrjj , use deleteLater.
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Kushan

wrote on last edited by

#21

@SGaist Thanx mate :) Qt rox :D
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