qputenv("QT_IM_MODULE", QByteArray("qtvirtualkeyboard"));

#include "mainwindow.h"
 
#include <QApplication>
#include "VirtualkeyboardPushView.h"
 
int main(int argc, char *argv[])
{
    /// 第一步
    qputenv("QT_IM_MODULE", QByteArray("qtvirtualkeyboard"));
 
    QApplication a(argc, argv);
 
    /// 第二步
    VirtualkeyboardPushView keyboardHelper;
    keyboardHelper.makeCompilerHappy();
 
    MainWindow w;
    w.show();
    return a.exec();
}