000
13.08.2005, 19:11 Uhr
firefoxxi
|
Hi,
ich arbeite unter Windows mit MinGW und Qt4. Nun habe ich folgendes Programm geschrieben:
| C++: |
// Highlighter.h
#ifndef HIGHLIGHTER_H
#define HIGHLIGHTER_H
#include <QHash>
#include <QString>
#include <QStringList>
#include <QTextBlock>
#include <QTextCharFormat>
class QTextDocument;
class Highlighter : public QObject
{
Q_OBJECT
public:
Highlighter(QObject *parent = 0);
void addToDocument(QTextDocument *doc);
void addKeyword(const QString keyword, const QTextCharFormat format);
private slots:
void highlight(int pos, int removed, int added);
private:
void highlightBlock(QTextBlock block);
QHash<QString,QTextCharFormat> keywords;
}
#endif
|
| C++: |
// highlighter.cpp
#include <QtGui>
#include "highlighter.h"
Highlighter::Highlighter(QObject *parent)
: QObject(parent)
{
}
void Highlighter::addToDocument(QTextDocument *doc)
{
connect(doc, SIGNAL(contentsChange(int,int,int)),this, SLOT(highlight(int,int,int)));
}
void Highlighter::addKeyword(const QString keyword,
const QTextCharFormat format)
{
keywords[keyword] = format;
}
void Highlighter::highlight(int pos, int removed, int added)
{
QTextDocument *doc = qobject_cast<QTextDocument *>(sender());
QTextBlock block = doc->findBlock(pos);
if(!block.isValid())
return;
QTextBlock endBlock;
if(added > removed)
endBlock = doc->findBlock(pos+added);
else
endBlock = block;
while(block.isValid() && !(endBlock < block))
{
highlightBlock(block);
block.next();
}
}
void Highlighter::highlightBlock(QTextBlock block)
{
QTextLayout *layout = block.layout();
const QString text = block.text();
QList<QTextLayout::FormatRange> overrides;
foreach(QString keyword, keywords.keys())
{
if(keyword == text)
{
QTextLayout::FormatRange range;
range.start = 0;
range.length = text.length();
range.format = keywords[keyword];
overrides << range;
}
}
layout->setAdditionalFormats(overrides);
const_cast<QTextDocument *>(block.document())->markContentsDirty(
block.position(),block.length());
}
|
| C++: |
// MainWindow.h
#ifndef __MAINWINDOW_H
#define __MAINWINDOW_H
#include <QMainWindow>
#include <QTextEdit>
class MainWindow : public QMainWindow
{
public:
MainWindow(QWidget *parent = 0);
private:
QTextEdit *editor;
};
#endif
|
| C++: |
// MainWindow.cpp
#include <QtGui>
#include "MainWindow.h"
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
{
editor = new QTextEdit(this);
setCentralWidget(editor);
Highlighter hl;
hl.addToDocument(editor->document());
QTextCharFormat keywords;
keywords.setFontItalic(true);
hl.addKeyword("html",keywords);
}
|
| C++: |
// main.cpp
#include <QtGui>
#include "highlighter.h"
#include "MainWindow.h"
int main(int argc, char* argv[])
{
QApplication app(argc,argv);
MainWindow win;
win.show();
return app.exec();
}
|
Jetzt erhalte ich allerdings folgenden Fehler
| Code: |
MainWindow.h:9: error: multiple types in one declaration
|
Edit: Der Code der Highlighter Klasse ist gröstenteils dem Qt Beispielprogramm entnommen
--
Gruß
firefoxxi
http://firebird-browser.de/
Dieser Post wurde am 13.08.2005 um 19:13 Uhr von firefoxxi editiert. |
