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Thread: QLineEdit

  1. 19th August 2008, 17:01 #1
    GuL
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    Default QLineEdit

    I have created a form in QT Designer: here is the file generated

    ui_testemysql3.h
    Qt Code: 
    1. /********************************************************************************
    2. ** Form generated from reading ui file 'testemysql3.ui'
    3. **
    4. ** Created: Tue 19. Aug 11:41:43 2008
    5. **      by: Qt User Interface Compiler version 4.4.0
    6. **
    7. ** WARNING! All changes made in this file will be lost when recompiling ui file!
    8. ********************************************************************************/
    9.  
    10. #ifndef UI_TESTEMYSQL3_H
    11. #define UI_TESTEMYSQL3_H
    12.  
    13. #include <QtCore/QVariant>
    14. #include <QtGui/QAction>
    15. #include <QtGui/QApplication>
    16. #include <QtGui/QButtonGroup>
    17. #include <QtGui/QGridLayout>
    18. #include <QtGui/QHBoxLayout>
    19. #include <QtGui/QLabel>
    20. #include <QtGui/QLineEdit>
    21. #include <QtGui/QPushButton>
    22. #include <QtGui/QVBoxLayout>
    23. #include <QtGui/QWidget>
    24.  
    25. QT_BEGIN_NAMESPACE
    26.  
    27. class Ui_testemysql3Class
    28. {
    29. public:
    30.     QGridLayout *gridLayout;
    31.     QVBoxLayout *verticalLayout;
    32.     QHBoxLayout *horizontalLayout;
    33.     QLabel *label;
    34.     QLineEdit *lineEdit;
    35.     QPushButton *pushButton;
    36.     QPushButton *pushButton_2;
    37.  
    38.     void setupUi(QWidget *testemysql3Class)
    39.     {
    40.     if (testemysql3Class->objectName().isEmpty())
    41.         testemysql3Class->setObjectName(QString::fromUtf8("testemysql3Class"));
    42.     testemysql3Class->resize(275, 98);
    43.     gridLayout = new QGridLayout(testemysql3Class);
    44.     gridLayout->setSpacing(6);
    45.     gridLayout->setMargin(11);
    46.     gridLayout->setObjectName(QString::fromUtf8("gridLayout"));
    47.     verticalLayout = new QVBoxLayout();
    48.     verticalLayout->setSpacing(6);
    49.     verticalLayout->setObjectName(QString::fromUtf8("verticalLayout"));
    50.     horizontalLayout = new QHBoxLayout();
    51.     horizontalLayout->setSpacing(6);
    52.     horizontalLayout->setObjectName(QString::fromUtf8("horizontalLayout"));
    53.     label = new QLabel(testemysql3Class);
    54.     label->setObjectName(QString::fromUtf8("label"));
    55.  
    56.     horizontalLayout->addWidget(label);
    57.  
    58.     lineEdit = new QLineEdit(testemysql3Class);
    59.     lineEdit->setObjectName(QString::fromUtf8("lineEdit"));
    60.  
    61.     horizontalLayout->addWidget(lineEdit);
    62.  
    63.     pushButton = new QPushButton(testemysql3Class);
    64.     pushButton->setObjectName(QString::fromUtf8("pushButton"));
    65.  
    66.     horizontalLayout->addWidget(pushButton);
    67.  
    68.  
    69.     verticalLayout->addLayout(horizontalLayout);
    70.  
    71.     pushButton_2 = new QPushButton(testemysql3Class);
    72.     pushButton_2->setObjectName(QString::fromUtf8("pushButton_2"));
    73.  
    74.     verticalLayout->addWidget(pushButton_2);
    75.  
    76.  
    77.     gridLayout->addLayout(verticalLayout, 0, 0, 1, 1);
    78.  
    79.  
    80.     retranslateUi(testemysql3Class);
    81.  
    82.     QMetaObject::connectSlotsByName(testemysql3Class);
    83.     } // setupUi
    84.  
    85.     void retranslateUi(QWidget *testemysql3Class)
    86.     {
    87.     testemysql3Class->setWindowTitle(QApplication::translate("testemysql3Class", "testemysql3", 0, QApplication::UnicodeUTF8));
    88.     label->setText(QApplication::translate("testemysql3Class", "Teste", 0, QApplication::UnicodeUTF8));
    89.     pushButton->setText(QApplication::translate("testemysql3Class", "PushButton", 0, QApplication::UnicodeUTF8));
    90.     pushButton_2->setText(QApplication::translate("testemysql3Class", "Close", 0, QApplication::UnicodeUTF8));
    91.     Q_UNUSED(testemysql3Class);
    92.     } // retranslateUi
    93.  
    94. };
    95.  
    96. namespace Ui {
    97.     class testemysql3Class: public Ui_testemysql3Class {};
    98. } // namespace Ui
    99.  
    100. QT_END_NAMESPACE
    101.  
    102. #endif // UI_TESTEMYSQL3_H
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    main.cpp
    Qt Code: 
    1. #include <QtGui/QApplication>
    2. #include "testemysql3.h"
    3.  
    4. int main(int argc, char *argv[])
    5. {
    6. 	QApplication a(argc, argv);
    7. 	testemysql3 w;
    8. 	w.show();
    9. 	return a.exec();
    10. }
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    testemysql3.h
    Qt Code: 
    1. #ifndef TESTEMYSQL3_H
    2. #define TESTEMYSQL3_H
    3.  
    4. #include <QtGui/QWidget>
    5. #include "ui_testemysql3.h"
    6.  
    7. class QLineEdit;
    8.  
    9. class testemysql3 : public QWidget
    10. {
    11. 	Q_OBJECT
    12.  
    13. public:
    14. 	testemysql3(QWidget *parent = 0, Qt::WFlags flags = 0);
    15. 	~testemysql3();
    16.  
    17. private:
    18. 	Ui::testemysql3Class ui;
    19.  
    20. private slots:
    21. 	void on_pushButton_clicked();
    22. 	void on_pushButton_2_clicked();
    23. };
    24.  
    25. #endif // TESTEMYSQL3_H
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    testemysql3.cpp

    Qt Code: 
    1. #include "testemysql3.h"
    2. #include <QApplication>
    3. #include <QLineEdit>
    4.  
    5. testemysql3::testemysql3(QWidget *parent, Qt::WFlags flags)
    6. 	: QWidget(parent, flags)
    7. {
    8. 	ui.setupUi(this);
    9. }
    10.  
    11. testemysql3::~testemysql3()
    12. {
    13.  
    14. }
    15.  
    16.  
    17. void testemysql3::on_pushButton_2_clicked()
    18. {
    19. 	close();
    20. }
    21.  
    22. void testemysql3::on_pushButton_clicked()
    23. {
    24. 	lineEdit->setText("Olha o Texto");
    25. }
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    When I try to compile I got this error:

    ------ Build started: Project: testemysql3, Configuration: Debug Win32 ------
    Moc'ing testemysql3.h...
    Compiling...
    moc_testemysql3.cpp
    testemysql3.cpp
    .\testemysql3.cpp(26) : error C2065: 'lineEdit' : undeclared identifier
    .\testemysql3.cpp(26) : error C2227: left of '->setText' must point to class/struct/union/generic type
    type is ''unknown-type''
    main.cpp
    Generating Code...
    Build log was saved at "file://c:\Documents and Settings\Renan\Meus documentos\Visual Studio 2005\Projects\testemysql3\testemysql3\Debug\BuildL og.htm"
    testemysql3 - 2 error(s), 0 warning(s)
    ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
    Whats wrong?

    Renan
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  2. 19th August 2008, 17:39 #2
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    spirit
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    Default Re: QLineEdit

    did you add ui file to .pro file?
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  3. 19th August 2008, 17:41 #3
    spirit's Avatar
    spirit
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    Default Re: QLineEdit

    sorry, try this
    Qt Code: 
    1. ui.lineEdit->setText(...);
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  4. The following user says thank you to spirit for this useful post:

    GuL (19th August 2008)
  5. 19th August 2008, 17:54 #4
    GuL
    GuL is offline Intermediate user
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    Default Re: QLineEdit

    spirit

    thank you

    That was the problem from the other post QSqlQuery and QLineEdit

    the "ui." was why I cannot get the result from a query.

    Thanks a lot,

    Renan
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