(SOLVED) custom widget collection, LNK2019, LNK1120 problem.

CKM80

Hello.

I made a custom widget collection with the Qt Custom Designer Widget Project.
(windows7, Qt5.4.1 MSVC 2010 32bit, Qt Creator3.3.1)

I can see custom widgets in Qt creator designer and drag it on the mainwindow.ui.

Now, I have a dll, a lib and three .h files for custom button, checkbox, combobox at 'lib' folder.

(.pro)
QT += core gui
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
TARGET = untitled2
TEMPLATE = app

INCLUDEPATH += $$PWD/lib/
LIBS += -L$$PWD/lib -lsnmscontrolfactoryplugin

SOURCES += main.cpp
mainwindow.cpp

HEADERS += mainwindow.h
FORMS += mainwindow.ui

then, I got this message

mainwindow.obj : error LNK2019: "public: __thiscall SNMSQComboBox::SNMSQComboBox(class QWidget *)" (??0SNMSQComboBox@@QAE@PAVQWidget@@@Z) 외부 기호(참조 위치: "public: void __thiscall Ui_MainWindow::setupUi(class QMainWindow *)" (?setupUi@Ui_MainWindow@@QAEXPAVQMainWindow@@@Z) 함수)에서 확인하지 못했습니다.
mainwindow.obj : error LNK2019: "public: __thiscall SNMSQCheckBox::SNMSQCheckBox(class QWidget *)" (??0SNMSQCheckBox@@QAE@PAVQWidget@@@Z) 외부 기호(참조 위치: "public: void __thiscall Ui_MainWindow::setupUi(class QMainWindow *)" (?setupUi@Ui_MainWindow@@QAEXPAVQMainWindow@@@Z) 함수)에서 확인하지 못했습니다.
mainwindow.obj : error LNK2019: "public: __thiscall SNMSQPushButton::SNMSQPushButton(class QWidget *)" (??0SNMSQPushButton@@QAE@PAVQWidget@@@Z) 외부 기호(참조 위치: "public: void __thiscall Ui_MainWindow::setupUi(class QMainWindow *)" (?setupUi@Ui_MainWindow@@QAEXPAVQMainWindow@@@Z) 함수)에서 확인하지 못했습니다.
release\untitled2.exe : fatal error LNK1120: 3개의 확인할 수 없는 외부 참조입니다.

how can I resolve it?

(SOLVED)
I found a solution.
The Qt Custom Designer Widget Project doesn't make the dll macro in the header file.
So, need to include dll export macro in each header file like this.

#include <QtDesigner/QtDesigner>
#include <QPushButton>
class QDESIGNER_WIDGET_EXPORT SNMSQPushButton : public QPushButton
{
~~
~~
~~
}

SGaist

Hi and welcome to devnet,

Is snmscontrolfactoryplugin built with MSVC2010 32bit ?

CKM80

Hi~ SGaist.
Yes, I built with MSVC2010 32bit.

SGaist

You should use your own version of that macro. You might very well build your project against a Qt where designer wasn't built.