Qt Plugin Signal Slot

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The World Time Clock Plugin example shows how to create a custom widget plugin for Qt Designer that uses signals and slots. In this example, we simply extend the Custom Widget Plugin example and its custom widget (based on the Analog Clock example), by introducing the concept of signals and slots.
*Qt Signal Slot Performance
*Qt Public Slots
*Qt Signal Slot Not Working
why Qt doesn’t allow declaring methodes as signals or slots in the plugin interface?
*The update launches, the tmptmp signal is emitted, and the slot (drawObject) executes correctly. BUT if do just the same, but create the object in my Input Plugin, pass over the shared pointer and execute dr-update in another function, the slot drawObject is never entered though all the code is executed (including connect, etc.).
*Consider making your widget’s public ’set’ functions into public slots so that you can perform signal-slot connections with the widget in Qt Designer. In the course of this chapter we will create a simple but useful widget, ’FileChooser’, which we’ll later make available in Qt Designer as a plugin.
so i did the following
i declared pure virtual functions ,but in the implementation ,i reimplamented them as signals and slots,
then used the QPluginLoader to load the plugin,then used connect, and they worked fine when i tested them, so is this method recommanded and won’t cause bugs or maybe there are other appropriate methods?Qt Signal Slot Performance
@interface.h
..
virtual void send(int)=0;
..@Qt Public Slots
@interfaceplugin.h
..
signals:
void send(int);
..@ Nj vip lottery login.Qt Signal Slot Not Working
then connect the plugin when i load it
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