環境：qt-embedded-2.3.7
/////////////////////////////////////////////////////////////////////////////////
hello.pro內容：
TEMPLATE = app
CONFIG += qt warn_on release
HEADERS = hello.h
SOURCES = hello.cpp \
main.cpp
TARGET = hello
DEPENDPATH=../../include
REQUIRES=
/////////////////////////////////////hello.h///////////////////////////////////////
#ifndef HELLO_H
#define HELLO_H
#include <qwidget.h>
class Hello : public QWidget
{
Q_OBJECT
public:
Hello( const char *text, QWidget *parent=0, const char *name=0 );
signals:
void clicked();
protected:
void mouseReleaseEvent( QMouseEvent * );
void paintEvent( QPaintEvent * );
private slots:
void animate();
private:
QString t;
int b;
};
#endif
/////////////////////hello.cpp//////////////////////////////
#include "hello.h"
#include <qpushbutton.h>
#include <qtimer.h>
#include <qpainter.h>
#include <qpixmap.h>
/*
Constructs a Hello widget. Starts a 40 ms animation timer.
*/
Hello::Hello( const char *text, QWidget *parent, const char *name )
: QWidget(parent,name), t(text), b(0)
{
QTimer *timer = new QTimer(this);
connect( timer, SIGNAL(timeout()), SLOT(animate()) );
timer->start( 40 );
resize( 260, 130 );
}
/*
This private slot is called each time the timer fires.
*/
void Hello::animate()
{
b = (b + 1) & 15;
repaint( FALSE );
}
/*
Handles mouse button release events for the Hello widget.
We emit the clicked() signal when the mouse is released inside
the widget.
*/
void Hello::mouseReleaseEvent( QMouseEvent *e )
{
if ( rect().contains( e->pos() ) )
emit clicked();
}
/*
Handles paint events for the Hello widget.
Flicker-free update. The text is first drawn in the pixmap and the
pixmap is then blt'ed to the screen.
*/
void Hello::paintEvent( QPaintEvent * )
{
static int sin_tbl[16] = {
0, 38, 71, 92, 100, 92, 71, 38, 0, -38, -71, -92, -100, -92, -71, -38};
if ( t.isEmpty() )
return;
// 1: Compute some sizes, positions etc.
QFontMetrics fm = fontMetrics();
int w = fm.width(t) + 20;
int h = fm.height() * 2;
int pmx = width()/2 - w/2;
int pmy = height()/2 - h/2;
// 2: Create the pixmap and fill it with the widget's background
QPixmap pm( w, h );
pm.fill( this, pmx, pmy );
// 3: Paint the pixmap. Cool wave effect
QPainter p;
int x = 10;
int y = h/2 + fm.descent();
int i = 0;
p.begin( &pm );
p.setFont( font() );
while ( !t
.isNull() ) {
int i16 = (b+i) & 15;
p.setPen( QColor((15-i16)*16,255,255,QColor::Hsv) );
p.drawText( x, y-sin_tbl[i16]*h/800, t.mid(i,1), 1 );
x += fm.width( t );
i++;
}
p.end();
// 4: Copy the pixmap to the Hello widget
bitBlt( this, pmx, pmy, &pm );
}
/////////////////////////main.cpp///////////////////////
#include "hello.h"
#include <qapplication.h>
int main( int argc, char **argv )
{
QApplication a(argc,argv);
QString s;
for ( int i=1; i<argc; i++ ) {
s += argv;
if ( i<argc-1 )
s += " ";
}
if ( s.isEmpty() )
s = "Hello, World";
Hello h( s );
h.setCaption( "Qt says hello" );
QObject::connect( &h, SIGNAL(clicked()), &a, SLOT(quit()) );
h.setFont( QFont("times",32,QFont::Bold) ); // default font
h.setBackgroundColor( Qt::white ); // default bg color
a.setMainWidget( &h );
h.show();
return a.exec();
}
/////////////////////make後的訊息///////////////////////////////
hello.o(.text+0x16): In function `Hello::Hello[not-in-charge](char const*, QWidget*, char const*)':
: undefined reference to `QWidget::QWidget[not-in-charge](QWidget*, char const*, unsigned)'
hello.o(.text+0x31): In function `Hello::Hello[not-in-charge](char const*, QWidget*, char const*)':
: undefined reference to `QString::QString[in-charge](char const*)'
hello.o(.text+0x52): In function `Hello::Hello[not-in-charge](char const*, QWidget*, char const*)':
: undefined reference to `QTimer::QTimer[in-charge](QObject*, char const*)'
hello.o(.text+0x66): In function `Hello::Hello[not-in-charge](char const*, QWidget*, char const*)':
: undefined reference to `QObject::connect(QObject const*, char const*, QObject const*, char const*)'
hello.o(.text+0x73): In function `Hello::Hello[not-in-charge](char const*, QWidget*, char const*)':
: undefined reference to `QTimer::start(int, bool)'
hello.o(.text+0x86): In function `Hello::Hello[not-in-charge](char const*, QWidget*, char const*)':
: undefined reference to `QWidget::resize(int, int)'
hello.o(.text+0xb9): In function `Hello::Hello[not-in-charge](char const*, QWidget*, char const*)':
: undefined reference to `QString::shared_null'
hello.o(.text+0xc9): In function `Hello::Hello[not-in-charge](char const*, QWidget*, char const*)':
: undefined reference to `QStringData::deleteSelf()'
hello.o(.text+0xd4): In function `Hello::Hello[not-in-charge](char const*, QWidget*, char const*)':
: undefined reference to `QString::shared_null'
hello.o(.text+0xeb): In function `Hello::Hello[not-in-charge](char const*, QWidget*, char const*)':
: undefined reference to `QWidget::~QWidget [not-in-charge]()'
hello.o(.text+0x10e): In function `Hello::Hello[in-charge](char const*, QWidget*, char const*)':
: undefined reference to `QWidget::QWidget[not-in-charge](QWidget*, char const*, unsigned)'
hello.o(.text+0x129): In function `Hello::Hello[in-charge](char const*, QWidget*, char const*)':
: undefined reference to `QString::QString[in-charge](char const*)'
hello.o(.text+0x14a): In function `Hello::Hello[in-charge](char const*, QWidget*, char const*)':
: undefined reference to `QTimer::QTimer[in-charge](QObject*, char const*)'
hello.o(.text+0x15e): In function `Hello::Hello[in-charge](char const*, QWidget*, char const*)':
: undefined reference to `QObject::connect(QObject const*, char const*, QObject const*, char const*)'
hello.o(.text+0x16b): In function `Hello::Hello[in-charge](char const*, QWidget*, char const*)':
: undefined reference to `QTimer::start(int, bool)'
hello.o(.text+0x17e): In function `Hello::Hello[in-charge](char const*, QWidget*, char const*)':
: undefined reference to `QWidget::resize(int, int)'
hello.o(.text+0x1b1): In function `Hello::Hello[in-charge](char const*, QWidget*, char const*)':
: undefined reference to `QString::shared_null'
hello.o(.text+0x1c1): In function `Hello::Hello[in-charge](char const*, QWidget*, char const*)':
: undefined reference to `QStringData::deleteSelf()'
hello.o(.text+0x1cc): In function `Hello::Hello[in-charge](char const*, QWidget*, char const*)':
: undefined reference to `QString::shared_null'
hello.o(.text+0x1e3): In function `Hello::Hello[in-charge](char const*, QWidget*, char const*)':
//////////////我的問題///////////////////////////////////////
這是qt-2.3.7裡的範例…如果利用範例的makefile來make的話…
確定可以過…但是我用tmake -o Makefile hello.pro來產生makefile…
做make…他不能過…訊息如上…各位高手…如果知道原因…能否
告訴我…麻煩大家…謝謝[ 此贴被fanyu在2005-10-29 10:44重新编辑 ]
