菜单栏不见了

animal

1. <span style=" color:#000080;">#include</span><span style=" color:#c0c0c0;"> </span><span style=" color:#008000;">"mainwindow.h"</span>
   
2. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#000080;">#include</span><span style=" color:#c0c0c0;"> </span><span style=" color:#008000;">"ui_mainwindow.h"</span></pre>
   
3. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#000080;">#include</span><span style=" color:#c0c0c0;"> </span><span style=" color:#008000;"><QAction></span></pre>
   
4. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#000080;">#include</span><span style=" color:#c0c0c0;"> </span><span style=" color:#008000;"><QMenu></span></pre>
   
5. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#000080;">#include</span><span style=" color:#c0c0c0;"> </span><span style=" color:#008000;"><QMenuBar></span></pre>
   
6. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#000080;">#include</span><span style=" color:#c0c0c0;"> </span><span style=" color:#008000;"><QMessageBox></span></pre>
   
7. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#000080;">#include</span><span style=" color:#c0c0c0;"> </span><span style=" color:#008000;"><QStatusBar></span></pre>
   
8. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#000080;">#include</span><span style=" color:#c0c0c0;"> </span><span style=" color:#008000;"><QToolBar></span></pre>
   
9. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#800080;">MainWindow</span><span style=" color:#000000;">::</span><span style=" color:#000000;">MainWindow</span><span style=" color:#000000;">(</span><span style=" color:#800080;">QWidget</span><span style=" color:#c0c0c0;"> </span><span style=" color:#000000;">*</span><span style=" color:#000000;">parent</span><span style=" color:#000000;">)</span><span style=" color:#c0c0c0;"> </span><span style=" color:#000000;">:</span></pre>
   
10. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#c0c0c0;">    </span><span style=" color:#800080;">QMainWindow</span><span style=" color:#000000;">(</span><span style=" color:#000000;">parent</span><span style=" color:#000000;">),</span></pre>
    
11. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#c0c0c0;">    </span><span style=" color:#800000;">ui</span><span style=" color:#000000;">(</span><span style=" color:#808000;">new</span><span style=" color:#c0c0c0;"> </span><span style=" color:#800080;">Ui</span><span style=" color:#000000;">::</span><span style=" color:#800080;">MainWindow</span><span style=" color:#000000;">)</span></pre>
    
12. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#000000;">{</span></pre>
    
13. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#c0c0c0;">    </span><span style=" color:#000000;">setWindowTitle</span><span style=" color:#000000;">(</span><span style=" color:#000000;">tr</span><span style=" color:#000000;">(</span><span style=" color:#008000;">"Main</span><span style=" color:#c0c0c0;"> </span><span style=" color:#008000;">Window"</span><span style=" color:#000000;">));</span></pre>
    
14. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#c0c0c0;">    </span><span style=" color:#800000;">openAction</span><span style=" color:#000000;">=</span><span style=" color:#808000;">new</span><span style=" color:#c0c0c0;"> </span><span style=" color:#800080;">QAction</span><span style=" color:#000000;">(</span><span style=" color:#800080;">QIcon</span><span style=" color:#000000;">(</span><span style=" color:#008000;">":/image/openfile.png"</span><span style=" color:#000000;">),</span><span style=" color:#000000;">tr</span><span style=" color:#000000;">(</span><span style=" color:#008000;">"&open"</span><span style=" color:#000000;">),</span><span style=" color:#808000;">this</span><span style=" color:#000000;">);</span></pre>
    
15. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#c0c0c0;">    </span><span style=" color:#800000;">openAction</span><span style=" color:#000000;">-></span><span style=" color:#000000;">setShortcut</span><span style=" color:#000000;">(</span><span style=" color:#800080;">QKeySequence</span><span style=" color:#000000;">::</span><span style=" color:#800080;">Open</span><span style=" color:#000000;">);</span></pre>
    
16. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#c0c0c0;">    </span><span style=" color:#800000;">openAction</span><span style=" color:#000000;">-></span><span style=" color:#000000;">setStatusTip</span><span style=" color:#000000;">(</span><span style=" color:#000000;">tr</span><span style=" color:#000000;">(</span><span style=" color:#008000;">"Open</span><span style=" color:#c0c0c0;"> </span><span style=" color:#008000;">an</span><span style=" color:#c0c0c0;"> </span><span style=" color:#008000;">existing</span><span style=" color:#c0c0c0;"> </span><span style=" color:#008000;">file"</span><span style=" color:#000000;">));</span></pre>
    
17. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#c0c0c0;">    </span><span style=" color:#000000;">connect</span><span style=" color:#000000;">(</span><span style=" color:#800000;">openAction</span><span style=" color:#000000;">,&</span><span style=" color:#800080;">QAction</span><span style=" color:#000000;">::</span>triggered<span style=" color:#000000;">,</span><span style=" color:#808000;">this</span><span style=" color:#000000;">,&</span><span style=" color:#800080;">MainWindow</span><span style=" color:#000000;">::</span>open<span style=" color:#000000;">);</span></pre>
    
18. <pre style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">
    
19. </pre>
    
20. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#c0c0c0;">     </span><span style=" color:#800080;">QMenu</span><span style=" color:#c0c0c0;"> </span><span style=" color:#000000;">*</span><span style=" color:#000000;">file</span><span style=" color:#c0c0c0;"> </span><span style=" color:#000000;">=</span><span style=" color:#c0c0c0;"> </span><span style=" color:#000000;">menuBar</span><span style=" color:#000000;">()-></span><span style=" color:#000000;">addMenu</span><span style=" color:#000000;">(</span><span style=" color:#000000;">tr</span><span style=" color:#000000;">(</span><span style=" color:#008000;">"&file"</span><span style=" color:#000000;">));</span></pre>
    
21. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#c0c0c0;">     </span><span style=" color:#000000;">file</span><span style=" color:#000000;">-></span><span style=" color:#000000;">addAction</span><span style=" color:#000000;">(</span><span style=" color:#800000;">openAction</span><span style=" color:#000000;">);</span></pre>
    
22. <pre style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">
    
23. </pre>
    
24. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#c0c0c0;">    </span><span style=" color:#800080;">QToolBar</span><span style=" color:#c0c0c0;"> </span><span style=" color:#000000;">*</span><span style=" color:#000000;">toolBar</span><span style=" color:#000000;">=</span><span style=" color:#000000;">addToolBar</span><span style=" color:#000000;">(</span><span style=" color:#000000;">tr</span><span style=" color:#000000;">(</span><span style=" color:#008000;">"&File"</span><span style=" color:#000000;">));</span></pre>
    
25. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#c0c0c0;">    </span><span style=" color:#000000;">toolBar</span><span style=" color:#000000;">-></span><span style=" color:#000000;">addAction</span><span style=" color:#000000;">(</span><span style=" color:#800000;">openAction</span><span style=" color:#000000;">);</span></pre>
    
26. <pre style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">
    
27. </pre>
    
28. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#c0c0c0;">    </span><span style=" color:#800080;">QStatusBar</span><span style=" color:#c0c0c0;"> </span><span style=" color:#000000;">*</span><span style=" color:#000000;">statusBar1</span><span style=" color:#000000;">=</span><span style=" color:#000000;">statusBar</span><span style=" color:#000000;">();</span></pre>
    
29. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#c0c0c0;">    </span><span style=" color:#000000;">statusBar1</span><span style=" color:#000000;">-></span><span style=" color:#000000;">addAction</span><span style=" color:#000000;">(</span><span style=" color:#800000;">openAction</span><span style=" color:#000000;">);</span></pre>
    
30. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#c0c0c0;">   </span><span style=" color:#800000;">ui</span><span style=" color:#000000;">-></span><span style=" color:#000000;">setupUi</span><span style=" color:#000000;">(</span><span style=" color:#808000;">this</span><span style=" color:#000000;">);</span></pre>
    
31. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#000000;">}</span></pre>
    
32. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#808000;">void</span><span style=" color:#c0c0c0;"> </span><span style=" color:#800080;">MainWindow</span><span style=" color:#000000;">::</span><span style=" color:#000000;">open</span><span style=" color:#000000;">()</span></pre>
    
33. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#000000;">{</span></pre>
    
34. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#c0c0c0;">    </span><span style=" color:#800080;">QMessageBox</span><span style=" color:#000000;">::</span><span style=" color:#000000;">information</span><span style=" color:#000000;">(</span><span style=" color:#808000;">this</span><span style=" color:#000000;">,</span><span style=" color:#000000;">tr</span><span style=" color:#000000;">(</span><span style=" color:#008000;">"Information"</span><span style=" color:#000000;">),</span><span style=" color:#000000;">tr</span><span style=" color:#000000;">(</span><span style=" color:#008000;">"Open</span><span style=" color:#c0c0c0;"> </span><span style=" color:#008000;">file"</span><span style=" color:#000000;">));</span></pre>
    
35. <pre style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">
    
36. </pre>
    
37. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#000000;">}</span></pre>
    
38. <pre style="-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">
    
39. </pre>
    
40. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#800080;">MainWindow</span><span style=" color:#000000;">::~</span><span style=" font-style:italic; color:#000000;">MainWindow</span><span style=" color:#000000;">()</span></pre>
    
41. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#000000;">{</span></pre>
    
42. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#c0c0c0;">    </span><span style=" color:#808000;">delete</span><span style=" color:#c0c0c0;"> </span><span style=" color:#800000;">ui</span><span style=" color:#000000;">;</span></pre>
    
43. <pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#000000;">}</span></pre>

复制代码

animal

1. #include "mainwindow.h"
   
2. #include "ui_mainwindow.h"
   
3. #include <QAction>
   
4. #include <QMenu>
   
5. #include <QMenuBar>
   
6. #include <QMessageBox>
   
7. #include <QStatusBar>
   
8. #include <QToolBar>
   
9. MainWindow::MainWindow(QWidget *parent) :
   
10.     QMainWindow(parent),
    
11.     ui(new Ui::MainWindow)
    
12. {
    
13.     setWindowTitle(tr("Main Window"));
    
14.     openAction=new QAction(QIcon(":/image/openfile.png"),tr("&open"),this);
    
15.     openAction->setShortcut(QKeySequence::Open);
    
16.     openAction->setStatusTip(tr("Open an existing file"));
    
17.     connect(openAction,&QAction::triggered,this,&MainWindow::open);
    
18. 
    
19.      QMenu *file = menuBar()->addMenu(tr("&file"));
    
20.      file->addAction(openAction);
    
21. 
    
22.     QToolBar *toolBar=addToolBar(tr("&File"));
    
23.     toolBar->addAction(openAction);
    
24. 
    
25.     QStatusBar *statusBar1=statusBar();
    
26.     statusBar1->addAction(openAction);
    
27.    ui->setupUi(this);
    
28. }
    
29. void MainWindow::open()
    
30. {
    
31.     QMessageBox::information(this,tr("Information"),tr("Open file"));
    
32. 
    
33. }
    
34. 
    
35. MainWindow::~MainWindow()
    
36. {
    
37.     delete ui;
    
38. }

复制代码