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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Qt Tutorial - t8/main.cpp</title></head><body bgcolor="#ffffff"><p><table width="100%"><tr><td><a href="index.html"><img width="100" height="100" src="qtlogo.png"alt="Home" border="0"><img width="100"height="100" src="face.png" alt="Home" border="0"></a><td valign="top"><div align="right"><img src="dochead.png" width="472" height="27"><br><a href="classes.html"><b>Classes</b></a>- <a href="annotated.html">Annotated</a>- <a href="hierarchy.html">Tree</a>- <a href="functions.html">Functions</a>- <a href="index.html">Home</a>- <a href="topicals.html"><b>Structure</b> <font face="Arial,Helvetica,Geneva,Swiss,SunSans-Regular" align="center" size=32>Qte</font></a></div></table><p><h1 align=center>Source code for <a href="t8.html">tutorial 8</a>: main.cpp</h1><br clear="all"><hr> <pre>/******************************************************************** Qt tutorial 8******************************************************************/#include <<a href="qapplication-h.html">qapplication.h</a>>#include <<a href="qpushbutton-h.html">qpushbutton.h</a>>#include <<a href="qlcdnumber-h.html">qlcdnumber.h</a>>#include <<a href="qfont-h.html">qfont.h</a>>#include <<a href="qlayout-h.html">qlayout.h</a>>#include "lcdrange.h"#include "cannon.h"class MyWidget: public QWidget{public: MyWidget( <a href="qwidget.html">QWidget</a> *parent=0, const char *name=0 );};MyWidget::MyWidget( <a href="qwidget.html">QWidget</a> *parent, const char *name ) : <a href="qwidget.html">QWidget</a>( parent, name ){ <a href="qpushbutton.html">QPushButton</a> *quit = new <a href="qpushbutton.html">QPushButton</a>( "Quit", this, "quit" ); quit-><a href="qwidget.html#090d60">setFont</a>( <a href="qfont.html">QFont</a>( "Times", 18, QFont::Bold ) ); <a href="qobject.html#fbde73">connect</a>( quit, SIGNAL(clicked()), qApp, SLOT(quit()) ); LCDRange *angle = new LCDRange( this, "angle" ); angle->setRange( 5, 70 ); CannonField *cannonField = new CannonField( this, "cannonField" ); <a href="qobject.html#fbde73">connect</a>( angle, SIGNAL(valueChanged(int)), cannonField, SLOT(setAngle(int)) ); <a href="qobject.html#fbde73">connect</a>( cannonField, SIGNAL(angleChanged(int)), angle, SLOT(setValue(int)) ); <a href="qgridlayout.html">QGridLayout</a> *grid = new <a href="qgridlayout.html">QGridLayout</a>( this, 2, 2, 10 ); //2x2, 10 pixel border grid-><a href="qgridlayout.html#dac29c">addWidget</a>( quit, 0, 0 ); grid-><a href="qgridlayout.html#dac29c">addWidget</a>( angle, 1, 0, Qt::AlignTop ); grid-><a href="qgridlayout.html#dac29c">addWidget</a>( cannonField, 1, 1 ); grid-><a href="qgridlayout.html#df80c4">setColStretch</a>( 1, 10 ); angle->setValue( 60 ); angle-><a href="qwidget.html#25775a">setFocus</a>();}int main( int argc, char **argv ){ <a href="qapplication.html">QApplication</a> a( argc, argv ); MyWidget w; w.<a href="qwidget.html#9ede68">setGeometry</a>( 100, 100, 500, 355 ); a.<a href="qapplication.html#7ad759">setMainWidget</a>( &w ); w.<a href="qwidget.html#200ee5">show</a>(); return a.<a href="qapplication.html#84c7bf">exec</a>();}</pre><p><p><address><hr><div align="center"><table width="100%" cellspacing="0" border="0"><tr><td>Copyright ⌨️ 快捷键说明
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