Application Plugins

GrahamL

Hi
I am developing a set of plugins for my Qt application using VS 2012
When I created the project I selected Qt Library as the project type, but when I load the library with QPluginLoader the 'instance' method failed.
I then created another VS project using the 'Qt Application' as the project type and deleted main.cpp and using the VS properties manager I set the configuration type to Dynamic library, Using this method the plugin is loaded and behaves as expected.
I have compared the VS configuration properties and they are identical.
I have created a .pro file for both projects using VS and they are also identical.

I would be grateful if anyone could tell me the reason for this

Thanks

andreyc

When you the plugin do you get shared library?
Could you show part of .pro files with QT, CONFIG, TEMPLATE, and TARGET variables.

When I created a plugin using qtcreator I've got .pro file
@
...
QT += widgets network
QT -= gui

CONFIG += plugin debug

TARGET = $$qtLibraryTarget(my_plugin)
TEMPLATE = lib
...
@

GrahamL

Hi
This is the .pro file for plugin created in VS as a Qt Library
@

----------------------------------------------------

This file is generated by the Qt Visual Studio Add-in.

------------------------------------------------------

TEMPLATE = lib
TARGET = DockedWidget1Plugin
DESTDIR = ../plugins
QT += core widgets gui
CONFIG += debug console
DEFINES += WIN64 QT_DLL QT_WIDGETS_LIB DOCKEDWIDGET1PLUGIN_LIB
INCLUDEPATH += ../../DockedWidgets
../../../../../Acq++/CommonUI/ApplicationCode/Plugins
../../../../../Acq++/CommonQt/ApplicationCode/SystemLogging
../../../../../Acq++/Global
../../../../../Acq++/CommonUI/ApplicationCode/Preferences
../../../InterfaceFactoriesApplication/InterfaceFactoriesApplication
./Build/ui
.
./Build/moc
LIBS += -L"../../DockedWidgets/Build/Debug"
-L"../../../../../Acq++/bin"
-lDockedWidgetsd
-lCommonQtd
-lASLCommonUId
DEPENDPATH += .
MOC_DIR += ./Build/moc
OBJECTS_DIR += debug
UI_DIR += ./Build/ui
RCC_DIR += ./Build/rcc
HEADERS += ./DockedWidget1Plugin.h
./DockedWidget1PluginFactory.h
SOURCES += ./DockedWidget1Plugin.cpp
./DockedWidget1PluginFactory.cpp
@

and this is the .pro file produced for VS when the project was created as a Qt Application
@

----------------------------------------------------

This file is generated by the Qt Visual Studio Add-in.

------------------------------------------------------

TEMPLATE = lib
TARGET = DockedWidget2Plugin
DESTDIR = ../plugins
QT += core widgets gui
CONFIG += debug
DEFINES += WIN64 QT_DLL QT_WIDGETS_LIB
INCLUDEPATH += ../../../../../Acq++/CommonUI/ApplicationCode/Plugins
../../../../../Acq++/CommonQt/ApplicationCode/SystemLogging
../../../../../Acq++/Global
../../../../../Acq++/CommonUI/ApplicationCode/Preferences
../../../InterfaceFactoriesApplication/InterfaceFactoriesApplication
./Build/ui
.
./Build/moc
LIBS += -L"../../../../../Acq++/bin"
-lCommonQtd
-lASLCommonUId
DEPENDPATH += .
MOC_DIR += ./Build/moc
OBJECTS_DIR += debug
UI_DIR += ./Build/ui
RCC_DIR += ./Build/rcc
HEADERS += ./DockedWidget2Plugin.h
./DockedWidget2PluginFactory.h
SOURCES += ./DockedWidget2Plugin.cpp
./DockedWidget2PluginFactory.cpp
@