Qt 界面做成dll以便调用

1 DEFINES +=WIDGETDLL_LIBRARY
2 TEMPLATE = lib

1 #if defined(WIDGETDLL_LIBRARY)
2 #  define WIDGETDLLSHARED_EXPORT Q_DECL_EXPORT
3 #else
4 #  define WIDGETDLLSHARED_EXPORT Q_DECL_IMPORT
5 #endif
6  
7 class WIDGETDLLSHARED_EXPORT WidgetDll:public QWidget, privateUi::Form
8 {
9 Q_OBJECT
10 public:
11  
12     WidgetDll(QWidget *parent = 0);
13  
14 signals:
15     voidbuttonPressed(QString);
16  
17 privateslots:
18     voidon_pushButton_clicked();
19 };

1 #ifndef MAINWINDOW_H
2 #define MAINWINDOW_H
3  
4 #include <QMainWindow>
5 #include "widgetdll.h" //dll头文件
6  
7 namespaceUi {
8 classMainWindow;
9 }
10  
11 class MainWindow : publicQMainWindow
12 {
13 Q_OBJECT
14  
15 public:
16     explicit MainWindow(QWidget *parent = 0);
17     ~MainWindow();
18 privateslots:
19     void getBtn(QString); //接受dll中的信号
20 private:
21     Ui::MainWindow *ui;
22  
23     WidgetDll *m_mainwidget;
24 };
25  
26 #endif //MAINWINDOW_H

1 m_mainwidget = new WidgetDll(this);
2 setCentralWidget(m_mainwidget);
3 connect(m_mainwidget,&WidgetDll::buttonPressed,this,&MainWindow::getBtn);