Qt学习笔记1

1.Qt引用API时,QString到LPCWSTR的转换:

::GetPrivateProfileIntW(QString(tr("相关设置")).utf16(),QString(tr("时间间隔")).utf16(),5,filePath.utf16()));

 

2.引用LPRECT时:

RECTappRect;

::GetWindowRect(AppWnd,(LPRECT)&appRect);

 

3.模拟按键与鼠标:

   MousePoint=QCursor::pos();

        ::SetCursorPos(youDaoRect.x()+100,youDaoRect.y()+200);

   mouse_event(MOUSEEVENTF_LEFTDOWN,0,0,0,0);

     mouse_event(MOUSEEVENTF_LEFTUP,0,0,0,0);

     keybd_event(VK_SPACE,0,0,0);

   keybd_event(VK_SPACE,0,2,0);

         ::SetCursorPos(MousePoint.x(),MousePoint.y());

 

4.Qt应用程序创建图标:

         a.工程文件夹,新建:icon.rc    

         b.添加文本:IDI_ICON1              ICON                   "yo.ico"

         c.*.pro文件里,加入代码:       RC_FILE = icon.rc

         d.搞定。

 

5.Qt timer的用法:

         a.头文件:

         #include<QtCore>

         b.构造函数里添加声明:

        QTimer*timer = newQTimer(this);

               connect(timer,SIGNAL(timeout()),this,SLOT(timerUpDate()));

         c.添加槽:

       privateslots:

              voidtimerUpDate();

    d.相应事件设置周期,与开始即可:

        timer->start(ui->spinBox->value()*1000);

 

6.Qt 重写关闭事件:        

voidcloseEvent(QCloseEvent*e);

原文地址:https://www.cnblogs.com/owenyang/p/3579116.html