Масштаб Опции

[Гость_Alexey_*]

Для текствого редактора необходимо реализовать масштаб подскажите как это сделать.

Код программы

CODE

//MdiChild.h
#ifndef MDICHILD_H
#define MDICHILD_H

#include <QTextEdit>

class MdiChild : public QTextEdit
{
Q_OBJECT

public:
MdiChild();

void newFile();
bool loadFile(const QString &fileName);
bool save();
bool saveAs();
bool saveFile(const QString &fileName);
void ALeft();
void ARight();
void ACenter();
void txtStyle(int styleIndex);
void txtSize(const QString &p);
void txtFamily(const QString &f);
void txtColor();
QString userFriendlyCurrentFile();
QString currentFile() { return curFile; }

protected:
void closeEvent(QCloseEvent *event);

private slots:
void documentWasModified();

private:
bool maybeSave();
void setCurrentFile(const QString &fileName);
QString strippedName(const QString &fullFileName);

QString curFile;
bool isUntitled;
};

#endif
//MainWindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>

#include <QAction>
#include <QApplication>
#include <QClipboard>
#include <QColorDialog>
#include <QComboBox>
#include <QFile>
#include <QFileDialog>
#include <QFileInfo>
#include <QFontDatabase>
#include <QMenu>
#include <QMenuBar>
#include <QPrintDialog>
#include <QPrinter>
#include <QTextCodec>
#include <QTextEdit>
#include <QToolBar>
#include <QTextCursor>
#include <QTextList>
#include <QtDebug>
#include <QCloseEvent>
#include <QMessageBox>



class QAction;
class QMenu;
class QWorkspace;
class MdiChild;
class QSignalMapper;

class MainWindow : public QMainWindow
{
Q_OBJECT

public:
MainWindow();

protected:
void closeEvent(QCloseEvent *event);

private slots:
void newFile();
void open();
void save();
void saveAs();
void cut();
void copy();
void paste();
void about();
void updateMenus();
void updateWindowMenu();
void AllignLeft();
void AllignRight();
void AllignCenter();
MdiChild *createMdiChild();
void textFamily(const QString &f);
void textSize(const QString &p);
void textStyle(int styleIndex);
void textColor();


private:
void createActions();
void createMenus();
void createToolBars();
void createStatusBar();
void readSettings();
void writeSettings();
MdiChild *activeMdiChild();
MdiChild *findMdiChild(const QString &fileName);

QWorkspace *workspace;
QSignalMapper *windowMapper;

QMenu *fileMenu;
QMenu *editMenu;
QMenu *windowMenu;
QMenu *textMenu;
QMenu *helpMenu;
QToolBar *fileToolBar;
QToolBar *editToolBar;
QToolBar *textToolBar;
QAction *newAct;
QAction *openAct;
QAction *saveAct;
QAction *saveAsAct;
QAction *exitAct;
QAction *cutAct;
QAction *copyAct;
QAction *pasteAct;
QAction *closeAct;
QAction *closeAllAct;
QAction *tileAct;
QAction *cascadeAct;
QAction *arrangeAct;
QAction *nextAct;
QAction *previousAct;
QAction *separatorAct;
QAction *aboutAct;
QAction *allignLeftAct;
QAction *allignRightAct;
QAction *allignCenterAct;
QAction *textColorAct;
QComboBox *comboStyle;
QComboBox *comboFont;
QComboBox *comboSize;

};

#endif
//MdiChild.cpp
#include <QtGui>

#include "mdichild.h"

MdiChild::MdiChild()
{
setAttribute(Qt::WA_DeleteOnClose);
isUntitled = true;

connect(document(), SIGNAL(contentsChanged()),
this, SLOT(documentWasModified()));
}
/************************************************/
void MdiChild::ALeft()
{
setAlignment(Qt::AlignLeft);
}

void MdiChild::ARight()
{
setAlignment(Qt::AlignRight);
}

void MdiChild::ACenter()
{
setAlignment(Qt::AlignCenter);
}
/****************************************************/
void MdiChild:: txtStyle(int styleIndex)
{
QTextCursor cursor = textCursor();

if (styleIndex != 0) {
QTextListFormat::Style style = QTextListFormat::ListDisc;

switch (styleIndex) {
default:
case 1:
style = QTextListFormat::ListDisc;
break;
case 2:
style = QTextListFormat::ListCircle;
break;
case 3:
style = QTextListFormat::ListSquare;
break;
case 4:
style = QTextListFormat::ListDecimal;
break;
case 5:
style = QTextListFormat::ListLowerAlpha;
break;
case 6:
style = QTextListFormat::ListUpperAlpha;
break;
}

cursor.beginEditBlock();

QTextBlockFormat blockFmt = cursor.blockFormat();

QTextListFormat listFmt;

if (cursor.currentList()) {
listFmt = cursor.currentList()->format();
} else {
listFmt.setIndent(blockFmt.indent() + 1);
blockFmt.setIndent(0);
cursor.setBlockFormat(blockFmt);
}

listFmt.setStyle(style);

cursor.createList(listFmt);

cursor.endEditBlock();
} else {
// ####
QTextBlockFormat bfmt;
bfmt.setObjectIndex(-1);
cursor.mergeBlockFormat(bfmt);
}


}

void MdiChild:: txtSize(const QString &p)
{
setFontPointSize(p.toFloat());
}

void MdiChild:: txtColor()
{
QColor col = QColorDialog::getColor(textColor(), this);
if (!col.isValid())
return;
setTextColor(col);
//colorChanged(col);
}

void MdiChild::txtFamily(const QString &f)
{
setFontFamily(f);
}


/***************************************************/
void MdiChild::newFile()
{
static int sequenceNumber = 1;

isUntitled = true;
curFile = tr("document%1.txt").arg(sequenceNumber++);
setWindowTitle(curFile + "[*]");
}

bool MdiChild::loadFile(const QString &fileName)
{
QFile file(fileName);
if (!file.open(QFile::ReadOnly | QFile::Text)) {
QMessageBox::warning(this, tr("MDI"),
tr("Cannot read file %1:\n%2.")
.arg(fileName)
.arg(file.errorString()));
return false;
}

QTextStream in(&file);
QApplication::setOverrideCursor(Qt::WaitCursor);
setPlainText(in.readAll());
QApplication::restoreOverrideCursor();

setCurrentFile(fileName);
return true;
}

bool MdiChild::save()
{
if (isUntitled) {
return saveAs();
} else {
return saveFile(curFile);
}
}

bool MdiChild::saveAs()
{
QString fileName = QFileDialog::getSaveFileName(this, tr("Save As"),
curFile);
if (fileName.isEmpty())
return false;

return saveFile(fileName);
}

bool MdiChild::saveFile(const QString &fileName)
{
QFile file(fileName);
if (!file.open(QFile::WriteOnly | QFile::Text)) {
QMessageBox::warning(this, tr("MDI"),
tr("Cannot write file %1:\n%2.")
.arg(fileName)
.arg(file.errorString()));
return false;
}

QTextStream out(&file);
QApplication::setOverrideCursor(Qt::WaitCursor);
out << toPlainText();
QApplication::restoreOverrideCursor();

setCurrentFile(fileName);
return true;
}

QString MdiChild::userFriendlyCurrentFile()
{
return strippedName(curFile);
}

void MdiChild::closeEvent(QCloseEvent *event)
{
if (maybeSave()) {
event->accept();
} else {
event->ignore();
}
}

void MdiChild::documentWasModified()
{
setWindowModified(document()->isModified());
}

bool MdiChild::maybeSave()
{
if (document()->isModified()) {
int ret = QMessageBox::warning(this, tr("MDI"),
tr("'%1' has been modified.\n"
"Do you want to save your changes?")
.arg(userFriendlyCurrentFile()),
QMessageBox::Yes | QMessageBox::Default,
QMessageBox::No,
QMessageBox::Cancel | QMessageBox::Escape);
if (ret == QMessageBox::Yes)
return save();
else if (ret == QMessageBox::Cancel)
return false;
}
return true;
}

void MdiChild::setCurrentFile(const QString &fileName)
{
curFile = QFileInfo(fileName).canonicalFilePath();
isUntitled = false;
document()->setModified(false);
setWindowModified(false);
setWindowTitle(userFriendlyCurrentFile() + "[*]");
}

QString MdiChild::strippedName(const QString &fullFileName)
{
return QFileInfo(fullFileName).fileName();
}
//MainWindow.cpp
#include <QtGui>

#include "mainwindow.h"
#include "mdichild.h"

MainWindow::MainWindow()
{
workspace = new QWorkspace;
setCentralWidget(workspace);
connect(workspace, SIGNAL(windowActivated(QWidget *)),
this, SLOT(updateMenus()));
windowMapper = new QSignalMapper(this);
connect(windowMapper, SIGNAL(mapped(QWidget *)),
workspace, SLOT(setActiveWindow(QWidget *)));

createActions();
createMenus();
createToolBars();
createStatusBar();
updateMenus();

readSettings();

setWindowTitle(tr("Text redactor"));
}

void MainWindow::closeEvent(QCloseEvent *event)
{
workspace->closeAllWindows();
if (activeMdiChild()) {
event->ignore();
} else {
writeSettings();
event->accept();
}
}

void MainWindow::newFile()
{
MdiChild *child = createMdiChild();
child->newFile();
child->show();
}

void MainWindow::open()
{
QString fileName = QFileDialog::getOpenFileName(this);
if (!fileName.isEmpty()) {
MdiChild *existing = findMdiChild(fileName);
if (existing) {
workspace->setActiveWindow(existing);
return;
}

MdiChild *child = createMdiChild();
if (child->loadFile(fileName)) {
statusBar()->showMessage(tr("File loaded"), 2000);
child->show();
} else {
child->close();
}
}
}
/*********************************************/
void MainWindow::AllignLeft()
{
if(activeMdiChild())activeMdiChild()->ALeft();
}
void MainWindow::AllignRight()
{
if(activeMdiChild())activeMdiChild()->ARight();
}
void MainWindow::AllignCenter()
{
if(activeMdiChild())activeMdiChild()->ACenter();
}
/*********************************************/

void MainWindow::textFamily(const QString &f)
{
if(activeMdiChild())activeMdiChild()->txtFamily(f);
}

void MainWindow::textSize(const QString &p)
{
if(activeMdiChild())activeMdiChild()->txtSize(p);
}

void MainWindow::textStyle(int styleIndex)
{
if(activeMdiChild())activeMdiChild()->txtStyle(styleIndex);
}

void MainWindow::textColor()
{
if(activeMdiChild())activeMdiChild()->txtColor();
}
/*********************************************/
void MainWindow::save()
{
if (activeMdiChild()->save())
statusBar()->showMessage(tr("File saved"), 2000);
}

void MainWindow::saveAs()
{
if (activeMdiChild()->saveAs())
statusBar()->showMessage(tr("File saved"), 2000);
}

void MainWindow::cut()
{
activeMdiChild()->cut();
}

void MainWindow::copy()
{
activeMdiChild()->copy();
}

void MainWindow::paste()
{
activeMdiChild()->paste();
}

void MainWindow::about()
{
QMessageBox::about(this, tr("About MDI"),
tr(" Tsimbal Alexey \n gr 450502 \n 2008"));
}

void MainWindow::updateMenus()
{
bool hasMdiChild = (activeMdiChild() != 0);
saveAct->setEnabled(hasMdiChild);
saveAsAct->setEnabled(hasMdiChild);
pasteAct->setEnabled(hasMdiChild);
closeAct->setEnabled(hasMdiChild);
closeAllAct->setEnabled(hasMdiChild);
tileAct->setEnabled(hasMdiChild);
cascadeAct->setEnabled(hasMdiChild);
arrangeAct->setEnabled(hasMdiChild);
nextAct->setEnabled(hasMdiChild);
previousAct->setEnabled(hasMdiChild);
separatorAct->setVisible(hasMdiChild);

bool hasSelection = (activeMdiChild() &&
activeMdiChild()->textCursor().hasSelection());
cutAct->setEnabled(hasSelection);
copyAct->setEnabled(hasSelection);
}

void MainWindow::updateWindowMenu()
{
windowMenu->clear();
windowMenu->addAction(closeAct);
windowMenu->addAction(closeAllAct);
windowMenu->addSeparator();
windowMenu->addAction(tileAct);
windowMenu->addAction(cascadeAct);
windowMenu->addAction(arrangeAct);
windowMenu->addSeparator();
windowMenu->addAction(nextAct);
windowMenu->addAction(previousAct);
windowMenu->addAction(separatorAct);

QList<QWidget *> windows = workspace->windowList();
separatorAct->setVisible(!windows.isEmpty());

for (int i = 0; i < windows.size(); ++i) {
MdiChild *child = qobject_cast<MdiChild *>(windows.at(i));

QString text;
if (i < 9) {
text = tr("&%1 %2").arg(i + 1)
.arg(child->userFriendlyCurrentFile());
} else {
text = tr("%1 %2").arg(i + 1)
.arg(child->userFriendlyCurrentFile());
}
QAction *action = windowMenu->addAction(text);
action->setCheckable(true);
action ->setChecked(child == activeMdiChild());
connect(action, SIGNAL(triggered()), windowMapper, SLOT(map()));
windowMapper->setMapping(action, child);
}
}

MdiChild *MainWindow::createMdiChild()
{
MdiChild *child = new MdiChild;
workspace->addWindow(child);

connect(child, SIGNAL(copyAvailable(bool)),
cutAct, SLOT(setEnabled(bool)));
connect(child, SIGNAL(copyAvailable(bool)),
copyAct, SLOT(setEnabled(bool)));

return child;
}

void MainWindow::createActions()
{
newAct = new QAction(QIcon(":/images/new.png"), tr("&New"), this);
newAct->setShortcut(tr("Ctrl+N"));
newAct->setStatusTip(tr("Create a new file"));
connect(newAct, SIGNAL(triggered()), this, SLOT(newFile()));

openAct = new QAction(QIcon(":/images/open.png"), tr("&Open..."), this);
openAct->setShortcut(tr("Ctrl+O"));
openAct->setStatusTip(tr("Open an existing file"));
connect(openAct, SIGNAL(triggered()), this, SLOT(open()));

saveAct = new QAction(QIcon(":/images/save.png"), tr("&Save"), this);
saveAct->setShortcut(tr("Ctrl+S"));
saveAct->setStatusTip(tr("Save the document to disk"));
connect(saveAct, SIGNAL(triggered()), this, SLOT(save()));

saveAsAct = new QAction(tr("Save &As..."), this);
saveAsAct->setStatusTip(tr("Save the document under a new name"));
connect(saveAsAct, SIGNAL(triggered()), this, SLOT(saveAs()));

exitAct = new QAction(tr("E&xit"), this);
exitAct->setShortcut(tr("Ctrl+Q"));
exitAct->setStatusTip(tr("Exit the application"));
connect(exitAct, SIGNAL(triggered()), qApp, SLOT(closeAllWindows()));

cutAct = new QAction(QIcon(":/images/cut.png"), tr("Cu&t"), this);
cutAct->setShortcut(tr("Ctrl+X"));
cutAct->setStatusTip(tr("Cut the current selection's contents to the "
"clipboard"));
connect(cutAct, SIGNAL(triggered()), this, SLOT(cut()));

copyAct = new QAction(QIcon(":/images/copy.png"), tr("&Copy"), this);
copyAct->setShortcut(tr("Ctrl+C"));
copyAct->setStatusTip(tr("Copy the current selection's contents to the "
"clipboard"));
connect(copyAct, SIGNAL(triggered()), this, SLOT(copy()));

pasteAct = new QAction(QIcon(":/images/paste.png"), tr("&Paste"), this);
pasteAct->setShortcut(tr("Ctrl+V"));
pasteAct->setStatusTip(tr("Paste the clipboard's contents into the current "
"selection"));
connect(pasteAct, SIGNAL(triggered()), this, SLOT(paste()));

closeAct = new QAction(tr("Cl&ose"), this);
closeAct->setShortcut(tr("Ctrl+F4"));
closeAct->setStatusTip(tr("Close the active window"));
connect(closeAct, SIGNAL(triggered()),
workspace, SLOT(closeActiveWindow()));

closeAllAct = new QAction(tr("Close &All"), this);
closeAllAct->setStatusTip(tr("Close all the windows"));
connect(closeAllAct, SIGNAL(triggered()),
workspace, SLOT(closeAllWindows()));

tileAct = new QAction(tr("&Tile"), this);
tileAct->setStatusTip(tr("Tile the windows"));
connect(tileAct, SIGNAL(triggered()), workspace, SLOT(tile()));

cascadeAct = new QAction(tr("&Cascade"), this);
cascadeAct->setStatusTip(tr("Cascade the windows"));
connect(cascadeAct, SIGNAL(triggered()), workspace, SLOT(cascade()));

arrangeAct = new QAction(tr("Arrange &icons"), this);
arrangeAct->setStatusTip(tr("Arrange the icons"));
connect(arrangeAct, SIGNAL(triggered()), workspace, SLOT(arrangeIcons()));

nextAct = new QAction(tr("Ne&xt"), this);
nextAct->setShortcut(tr("Ctrl+F6"));
nextAct->setStatusTip(tr("Move the focus to the next window"));
connect(nextAct, SIGNAL(triggered()),
workspace, SLOT(activateNextWindow()));

previousAct = new QAction(tr("Pre&vious"), this);
previousAct->setShortcut(tr("Ctrl+Shift+F6"));
previousAct->setStatusTip(tr("Move the focus to the previous "
"window"));
connect(previousAct, SIGNAL(triggered()),
workspace, SLOT(activatePreviousWindow()));

//*******************************************//
allignLeftAct = new QAction(QIcon(":/images/textleft.png"), tr("All&ign Left"), this);
allignLeftAct->setShortcut(tr("Ctrl+i"));
allignLeftAct->setStatusTip(tr("Allign text left"));
connect(allignLeftAct, SIGNAL(triggered()), this, SLOT(AllignLeft()));

allignRightAct = new QAction(QIcon(":/images/textright.png"), tr("Allign Ri&ght"), this);
allignRightAct->setShortcut(tr("Ctrl+g"));
allignRightAct->setStatusTip(tr("Allign text right"));
connect(allignRightAct, SIGNAL(triggered()), this, SLOT(AllignRight()));

allignCenterAct = new QAction(QIcon(":/images/textcenter.png"), tr("Allign cente&r"), this);
allignCenterAct->setShortcut(tr("Ctrl+r"));
allignCenterAct->setStatusTip(tr("Allign text center"));
connect(allignCenterAct, SIGNAL(triggered()), this, SLOT(AllignCenter()));
//*******************************************//
QPixmap pix(16, 16);
pix.fill(Qt::black);
textColorAct = new QAction(pix, tr("&Color..."), this);
textColorAct->setShortcut(tr("Ctrl+l"));
textColorAct->setStatusTip(tr("Text color"));
connect(textColorAct, SIGNAL(triggered()), this, SLOT(textColor()));

//********************************************//
separatorAct = new QAction(this);
separatorAct->setSeparator(true);

aboutAct = new QAction(tr("&About"), this);
aboutAct->setStatusTip(tr("Show the application's About box"));
connect(aboutAct, SIGNAL(triggered()), this, SLOT(about()));
}

void MainWindow::createMenus()
{
fileMenu = menuBar()->addMenu(tr("&File"));
fileMenu->addAction(newAct);
fileMenu->addAction(openAct);
fileMenu->addAction(saveAct);
fileMenu->addAction(saveAsAct);
fileMenu->addSeparator();
fileMenu->addAction(exitAct);

editMenu = menuBar()->addMenu(tr("&Edit"));
editMenu->addAction(cutAct);
editMenu->addAction(copyAct);
editMenu->addAction(pasteAct);

textMenu = menuBar()->addMenu(tr("&Text"));
textMenu->addAction(allignLeftAct);
textMenu->addAction(allignRightAct);
textMenu->addAction(allignCenterAct);
textMenu->addSeparator();
textMenu->addAction(textColorAct);

windowMenu = menuBar()->addMenu(tr("&Window"));
connect(windowMenu, SIGNAL(aboutToShow()), this, SLOT(updateWindowMenu()));

menuBar()->addSeparator();

helpMenu = menuBar()->addMenu(tr("&About"));
helpMenu->addAction(aboutAct);
}

void MainWindow::createToolBars()
{
fileToolBar = addToolBar(tr("File"));
fileToolBar->addAction(newAct);
fileToolBar->addAction(openAct);
fileToolBar->addAction(saveAct);

editToolBar = addToolBar(tr("Edit"));
editToolBar->addAction(cutAct);
editToolBar->addAction(copyAct);
editToolBar->addAction(pasteAct);

textToolBar = addToolBar(tr("Text"));
textToolBar->addAction(allignLeftAct);
textToolBar->addAction(allignCenterAct);
textToolBar->addAction(allignRightAct);
textToolBar->addAction(textColorAct);

textToolBar = new QToolBar(this);
textToolBar->setAllowedAreas(Qt::TopToolBarArea | Qt::BottomToolBarArea);
textToolBar->setWindowTitle(tr("Format Actions"));
addToolBarBreak(Qt::TopToolBarArea);
addToolBar(textToolBar);

comboStyle = new QComboBox(textToolBar);
textToolBar->addWidget(comboStyle);
comboStyle->addItem("Standard");
comboStyle->addItem("Bullet List (Disc)");
comboStyle->addItem("Bullet List (Circle)");
comboStyle->addItem("Bullet List (Square)");
comboStyle->addItem("Ordered List (Decimal)");
comboStyle->addItem("Ordered List (Alpha lower)");
comboStyle->addItem("Ordered List (Alpha upper)");
connect(comboStyle, SIGNAL(activated(int)),
this, SLOT(textStyle(int)));

comboFont = new QComboBox(textToolBar);
textToolBar->addWidget(comboFont);
comboFont->setEditable(true);
QFontDatabase db;
comboFont->addItems(db.families());
connect(comboFont, SIGNAL(activated(const QString &)),
this, SLOT(textFamily(const QString &)));
comboFont->setCurrentIndex(comboFont->findText(QApplication::font().family()));

comboSize = new QComboBox(textToolBar);
comboSize->setObjectName("comboSize");
textToolBar->addWidget(comboSize);
comboSize->setEditable(true);

foreach(int size, db.standardSizes())
comboSize->addItem(QString::number(size));

connect(comboSize, SIGNAL(activated(const QString &)),
this, SLOT(textSize(const QString &)));
comboSize->setCurrentIndex(comboSize->findText(QString::number(QApplication::font()
.pointSize())));



}

void MainWindow::createStatusBar()
{
statusBar()->showMessage(tr("Ready"));
}

void MainWindow::readSettings()
{
QSettings settings("Trolltech", "MDI Example");
QPoint pos = settings.value("pos", QPoint(200, 200)).toPoint();
QSize size = settings.value("size", QSize(400, 400)).toSize();
move(pos);
resize(size);
}

void MainWindow::writeSettings()
{
QSettings settings("Trolltech", "MDI Example");
settings.setValue("pos", pos());
settings.setValue("size", size());
}

MdiChild *MainWindow::activeMdiChild()
{
return qobject_cast<MdiChild *>(workspace->activeWindow());
}

MdiChild *MainWindow::findMdiChild(const QString &fileName)
{
QString canonicalFilePath = QFileInfo(fileName).canonicalFilePath();

foreach (QWidget *window, workspace->windowList()) {
MdiChild *mdiChild = qobject_cast<MdiChild *>(window);
if (mdiChild->currentFile() == canonicalFilePath)
return mdiChild;
}
return 0;
}
//main.cpp
#include <QApplication>

#include "mainwindow.h"

int main(int argc, char *argv[])
{
Q_INIT_RESOURCE(mdi);

QApplication app(argc, argv);
MainWindow mainWin;
mainWin.show();
return app.exec();
}

[Гость_ALexey_*]

Я наследую классом MdiChild класс QTextEdit , а в нем нет метода устанавливающего масштаб , только размер шрифта, как мне реализовать масштаб?

[Mixolap]

void QTextEdit::zoomIn ( int range = 1 )
void QTextEdit::zoomOut ( int range = 1 )

Помогут?

[Гость_Alexey_*]

Не помогут.
Я решил сделать так:
сделать второй QCOmboBox , в нем задать масштаб ( 100% ,150% ,50% итд) ,при выборе масштаба вызывается
setFontPointSize(sze*scle/100).
float sze хранит размер шрифта.
float scle хранит масштаб.
Но при объявлении в классе MainWindow этих переменных прога не запускается.
Подскажите из-за чего это может быть.

[Гость_Alexey_*]

Точнее прога не запускается когда в конструкторе я присваиваю sze=8; scle=100;

[ViGOur]

Пишет чего?

[Гость_Alexey_*]

Unhandled exception at 0x670f03c1 (QtCored4.dll) in mdi.exe: 0xC0000005: Access violation reading location 0x42c80030.

[ViGOur]

Значит ты где-то обращаешься к нулевому указателю.
В дебагере посмотри на каком участке кода вылетает, если сам не сможешь понять вставь его сюда мы подскажем.

[Гость_Alexey_*]

/*!
    Sends \a message through the event filter that was set by
    setEventFilter(). If no event filter has been set, this function
    returns false; otherwise, this function returns the result of the
    event filter function in the \a result parameter.

    \sa setEventFilter()
*/
bool QCoreApplication::filterEvent(void *message, long *result)
{
    Q_D(QCoreApplication);
    if (result)
        *result = 0;
    if (d->eventFilter)
        return d->eventFilter(message, result);
#ifdef Q_OS_WIN
 вот на этом участке-->>   return winEventFilter(reinterpret_cast<MSG *>(message), result);
#else
    return false;
#endif
}

Сообщение отредактировал Admin - 4.4.2008, 11:25

Причина редактирования: не забываем про тэг коде... ;)

[ViGOur]

Посмотри message или result, имеют какие адреса?

А лучше выложи проект в архиве...