Custom Widget Plugin Analog Clock

[kemp]

Hi!

When i create a form and add custom widget example analogclock or any other custom widget on it, make a project with this form and compile it, it says:

fatal error C1083: Cannot open include file: 'analogclock.h'

Where is the problem?
How can i use custom widgets in my application?
I am using Qt 4.1.4 and VS integration 1.1.3.

Thanks.

[jacek]

Make sure that %QTDIR%\examples\designer\customwidgetplugin is in your includes path.

[kemp]

Thank you for your answer. Now it says:


Error 1 error LNK2019: unresolved external symbol "public: __thiscall AnalogClock::AnalogClock(class QWidget *)" (??0AnalogClock@@QAE@PAVQWidget@@@Z) referenced in function "public: void __thiscall Ui_Dialog::setupUi(class QDialog *)" (?setupUi@Ui_Dialog@@QAEXPAVQDialog@@@Z) main.obj
Error 2 fatal error LNK1120: 1 unresolved externals debug\pp.exe


My code is:


main.cpp

#include <QApplication>
#include <QDialog>
#include "ui_form.h" 
 
int main(int argc,char *argv[]) 
{
	QApplication app(argc, argv);
	Ui::Dialog ui;
 
	QDialog *dialog = new QDialog;
 
	ui.setupUi(dialog);
	dialog->show();
 
	return app.exec();
}

#include <QApplication>
#include <QDialog>
#include "ui_form.h" 

int main(int argc,char *argv[]) 
{
	QApplication app(argc, argv);
	Ui::Dialog ui;

	QDialog *dialog = new QDialog;

	ui.setupUi(dialog);
	dialog->show();

	return app.exec();
}

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ui_form.h

#ifndef UI_FORM_H
#define UI_FORM_H
 
#include <QtCore/QVariant>
#include <QtGui/QAction>
#include <QtGui/QApplication>
#include <QtGui/QButtonGroup>
#include <QtGui/QDialog>
#include "analogclock.h"
 
class Ui_Dialog
{
public:
    AnalogClock *analogClock;
 
    void setupUi(QDialog *Dialog)
    {
    Dialog->setObjectName(QString::fromUtf8("Dialog"));
    Dialog->resize(QSize(400, 300).expandedTo(Dialog->minimumSizeHint()));
    analogClock = new AnalogClock(Dialog);
    analogClock->setObjectName(QString::fromUtf8("analogClock"));
    analogClock->setGeometry(QRect(170, 140, 100, 100));
    retranslateUi(Dialog);
 
    QMetaObject::connectSlotsByName(Dialog);
    } // setupUi
 
    void retranslateUi(QDialog *Dialog)
    {
    Dialog->setWindowTitle(QApplication::translate("Dialog", "Dialog", 0, QApplication::UnicodeUTF8));
    analogClock->setToolTip(QApplication::translate("Dialog", "The current time", 0, QApplication::UnicodeUTF8));
    analogClock->setWhatsThis(QApplication::translate("Dialog", "The analog clock widget displays the current time.", 0, QApplication::UnicodeUTF8));
    Q_UNUSED(Dialog);
    } // retranslateUi
 
};
 
namespace Ui {
    class Dialog: public Ui_Dialog {};
} // namespace Ui
 
#endif // UI_FORM_H

#ifndef UI_FORM_H
#define UI_FORM_H

#include <QtCore/QVariant>
#include <QtGui/QAction>
#include <QtGui/QApplication>
#include <QtGui/QButtonGroup>
#include <QtGui/QDialog>
#include "analogclock.h"

class Ui_Dialog
{
public:
    AnalogClock *analogClock;

    void setupUi(QDialog *Dialog)
    {
    Dialog->setObjectName(QString::fromUtf8("Dialog"));
    Dialog->resize(QSize(400, 300).expandedTo(Dialog->minimumSizeHint()));
    analogClock = new AnalogClock(Dialog);
    analogClock->setObjectName(QString::fromUtf8("analogClock"));
    analogClock->setGeometry(QRect(170, 140, 100, 100));
    retranslateUi(Dialog);

    QMetaObject::connectSlotsByName(Dialog);
    } // setupUi

    void retranslateUi(QDialog *Dialog)
    {
    Dialog->setWindowTitle(QApplication::translate("Dialog", "Dialog", 0, QApplication::UnicodeUTF8));
    analogClock->setToolTip(QApplication::translate("Dialog", "The current time", 0, QApplication::UnicodeUTF8));
    analogClock->setWhatsThis(QApplication::translate("Dialog", "The analog clock widget displays the current time.", 0, QApplication::UnicodeUTF8));
    Q_UNUSED(Dialog);
    } // retranslateUi

};

namespace Ui {
    class Dialog: public Ui_Dialog {};
} // namespace Ui

#endif // UI_FORM_H

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[jacek]

You didn't link your program with AnalogClock's code.

[kemp]

Error 1 error LNK2019: unresolved external symbol "__declspec(dllimport) public: __thiscall AnalogClock::AnalogClock(class QWidget *)" (__imp_??0AnalogClock@@QAE@PAVQWidget@@@Z) referenced in function "public: void __thiscall Ui_Dialog::setupUi(class QDialog *)" (?setupUi@Ui_Dialog@@QAEXPAVQDialog@@@Z) main.obj
Error 2 error LNK2001: unresolved external symbol "public: virtual struct QMetaObject const * __thiscall AnalogClock::metaObject(void)const " (?metaObject@AnalogClock@@UBEPBUQMetaObject@@XZ) main.obj
Error 3 error LNK2001: unresolved external symbol "public: virtual void * __thiscall AnalogClock::qt_metacast(char const *)" (?qt_metacast@AnalogClock@@UAEPAXPBD@Z) main.obj
Error 4 error LNK2001: unresolved external symbol "public: virtual int __thiscall AnalogClock::qt_metacall(enum QMetaObject::Call,int,void * *)" (?qt_metacall@AnalogClock@@UAEHW4Call@QMetaObject@ @HPAPAX@Z) main.obj
Error 5 error LNK2001: unresolved external symbol "protected: virtual void __thiscall AnalogClock:aintEvent(class QPaintEvent *)" (?paintEvent@AnalogClock@@MAEXPAVQPaintEvent@@@Z) main.obj



my *.pro file

TEMPLATE = app
TARGET +=
DEPENDPATH += .
INCLUDEPATH += C:\Qt\4.1.4\examples\designer\customwidgetplugin



# Input
FORMS += form.ui
SOURCES += main.cpp

[jacek]

Try:

TEMPLATE = app
TARGET += 
DEPENDPATH += .
INCLUDEPATH += C:\Qt\4.1.4\examples\designer\customwidgetplugin
LIBS += -LC:\Qt\4.1.4\plugins\designer\ -lcustomwidgetplugin
# Input
FORMS += form.ui
SOURCES += main.cpp

TEMPLATE = app
TARGET += 
DEPENDPATH += .
INCLUDEPATH += C:\Qt\4.1.4\examples\designer\customwidgetplugin
LIBS += -LC:\Qt\4.1.4\plugins\designer\ -lcustomwidgetplugin
# Input
FORMS += form.ui
SOURCES += main.cpp

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[kemp]

Now it builds fine, but when i run the application it says:
cannot find customwidgetplugin.dll

[jacek]

You must copy that DLL to the same directory where your executable is.

[kemp]

Thank you very much, now it works fine.