diff --git a/src/canvas.cpp b/src/canvas.cpp
--- a/src/canvas.cpp
+++ b/src/canvas.cpp
@@ -116,9 +116,9 @@
 
 QColor Canvas::rgbDoublesToColor(double r, double g, double b)
 {
-	return QColor(qMin(qMax((int)r, 0), 255),
-	              qMin(qMax((int)g, 0), 255),
-	              qMin(qMax((int)b, 0), 255));
+    return QColor(qMin(qMax(static_cast<int>(r), 0), 255),
+                  qMin(qMax(static_cast<int>(g), 0), 255),
+                  qMin(qMax(static_cast<int>(b), 0), 255));
 }
 
 void Canvas::drawLine(double x1, double y1, double x2, double y2)
@@ -164,7 +164,7 @@
 
 void Canvas::slotPenWidth(double width)
 {
-	int w = qMax(ROUND2INT(width), 0);
+    int w = qMax(ROUND2INT(width), 0);
 	if (w == 0) {
 		penWidthIsZero = true;
 		return;
@@ -180,7 +180,7 @@
 void Canvas::slotPenColor(double r, double g, double b)
 {
 	pen->setColor(rgbDoublesToColor(r, g, b));
-	textColor.setRgb((int)r, (int)g, (int)b);
+    textColor.setRgb(static_cast<int>(r), static_cast<int>(g), static_cast<int>(b));
 }
 
 void Canvas::slotCanvasColor(double r, double g, double b)
@@ -225,7 +225,7 @@
 
 void Canvas::wheelEvent(QWheelEvent *event)
 {
-	scaleView(std::pow((double)2.0, -event->delta() / 240.0));
+    scaleView(std::pow(static_cast<double>(2.0), -event->delta() / 240.0));
 }
 
 void Canvas::scaleView(double scaleFactor)
diff --git a/src/colorpicker.cpp b/src/colorpicker.cpp
--- a/src/colorpicker.cpp
+++ b/src/colorpicker.cpp
@@ -86,7 +86,7 @@
 	blueSlider->setMaximum(255);
 	blueSpin = new QSpinBox(this);
 	blueSpin->setMaximum(255);
-	QLabel* blueLabel = new QLabel(i18n("Amount blue:"));
+    QLabel* blueLabel = new QLabel(i18n("Amount blue:"));
 	blueLabel->setBuddy(blueSpin);
 	gridLayout->addWidget(blueLabel, 2, 0);
 	gridLayout->addWidget(blueSlider, 2, 1);
diff --git a/src/directiondialog.cpp b/src/directiondialog.cpp
--- a/src/directiondialog.cpp
+++ b/src/directiondialog.cpp
@@ -264,7 +264,7 @@
 	previousDirectionSpin->setRange(-360, 720);
 	previousDirectionSpin->setWrapping(true);
 	previousDirectionSpin->setSingleStep(10);
-	previousDirectionSpin->setValue((int)deg);
+    previousDirectionSpin->setValue(static_cast<int>(deg));
 	rightLayout->addWidget(previousDirectionSpin);
 	previousDirectionLabel->setBuddy(previousDirectionSpin);
 	connect(previousDirectionSpin, static_cast<void (QSpinBox::*)(int)>(&QSpinBox::valueChanged), this, &DirectionDialog::directionChanged);
@@ -280,7 +280,7 @@
 	directionSpin->setRange(-360, 720);
 	directionSpin->setWrapping(true);
 	directionSpin->setSingleStep(10);
-	directionSpin->setValue((int)deg);
+    directionSpin->setValue(static_cast<int>(deg));
 	rightLayout->addWidget(directionSpin);
 	directionLabel->setBuddy(directionSpin);
 	connect(directionSpin, static_cast<void (QSpinBox::*)(int)>(&QSpinBox::valueChanged), this, &DirectionDialog::directionChanged);
@@ -376,15 +376,15 @@
 {
 	// The canvas has changed, update the spinbox and command-LineEdit
 	skipValueChangedEvent = true;
-	directionSpin->setValue(ROUND2INT(deg));
+    directionSpin->setValue(ROUND2INT(deg));
 	updateCommandBox();
 }
 
 void DirectionDialog::updatePreviousDegrees(double deg)
 {
 	// The canvas has changed, update the spinbox and commandBox
 	skipValueChangedEvent = true;
-	previousDirectionSpin->setValue(ROUND2INT(deg));
+    previousDirectionSpin->setValue(ROUND2INT(deg));
 	updateCommandBox();
 }
 
diff --git a/src/editor.cpp b/src/editor.cpp
--- a/src/editor.cpp
+++ b/src/editor.cpp
@@ -137,7 +137,7 @@
 	removeMarkings();  // removes the character markings if there are any
 	int lineCount = 1;
 	for (QTextBlock block = editor->document()->begin(); block.isValid(); block = block.next()) lineCount++;
-	numbers->setWidth(qMax(1, 1 + (int)std::floor(std::log10((double)lineCount - 1))));
+    numbers->setWidth(qMax(1, 1 + static_cast<int>(std::floor(std::log10(static_cast<double>(lineCount) - 1)))));
 
 	emit contentChanged();
 }
diff --git a/src/interpreter/executer.cpp b/src/interpreter/executer.cpp
--- a/src/interpreter/executer.cpp
+++ b/src/interpreter/executer.cpp
@@ -457,7 +457,7 @@
 }
 void Executer::executeIf(TreeNode* node) {
 //	//qDebug() << "called";
-	QString id = QString("__%1_%2").arg(node->token()->look()).arg((quintptr)node);
+    QString id = QString("__%1_%2").arg(node->token()->look()).arg(reinterpret_cast<quintptr>(node));
 	if (currentVariableTable()->contains(id)) {
 		currentVariableTable()->remove(id);
 		return;
@@ -480,7 +480,7 @@
 }
 void Executer::executeRepeat(TreeNode* node) {
 //	//qDebug() << "called";
-	QString id = QString("__%1_%2").arg(node->token()->look()).arg((quintptr)node);
+    QString id = QString("__%1_%2").arg(node->token()->look()).arg(reinterpret_cast<quintptr>(node));
 
 	if(breaking) {
 		breaking = false;
@@ -501,7 +501,7 @@
 		if(ROUND2INT(node->child(0)->value()->number())<=0) // handle 'repeat 0'
 			return;
 		
-		currentVariableTable()->insert(id, Value((double)(ROUND2INT(node->child(0)->value()->number()) - 1)));
+        currentVariableTable()->insert(id, Value(static_cast<double>(ROUND2INT(node->child(0)->value()->number()) - 1)));
 	}
 	newScope = node->child(1);
 }
@@ -512,7 +512,7 @@
 	// so we do the following on every call to executeWhile:
 	//     exec scope, exec expression, exec scope, exec expression, ...
 
-	QString id = QString("__%1_%2").arg(node->token()->look()).arg((quintptr)node);
+    QString id = QString("__%1_%2").arg(node->token()->look()).arg(reinterpret_cast<quintptr>(node));
 
 	if (breaking) {
 		// We hit a break command while executing the scope
@@ -561,7 +561,7 @@
 		firstIteration = true;
 	}
 
-	QString id = QString("__%1_%2").arg(node->token()->look()).arg((quintptr)node);
+    QString id = QString("__%1_%2").arg(node->token()->look()).arg(reinterpret_cast<quintptr>(node));
 
 	if(breaking) {
 		breaking = false;
@@ -636,7 +636,7 @@
 	if (!checkParameterQuantity(node, 1, 20000+Token::Wait*100+90)) return;
 	if (!checkParameterType(node, Value::Number, 20000+Token::Wait*100+91) ) return;
 	waiting = true;
-	QTimer::singleShot((int)(1000*node->child(0)->value()->number()), this, SLOT(stopWaiting()));
+    QTimer::singleShot(static_cast<int>(1000*node->child(0)->value()->number()), this, SLOT(stopWaiting()));
 }
 void Executer::executeAssert(TreeNode* node) {
 //	//qDebug() << "called";
@@ -969,7 +969,7 @@
 	if (!checkParameterType(node, Value::Number, 20000+Token::Random*100+91)) return;
 	double x = nodeX->value()->number();
 	double y = nodeY->value()->number();
-	double r = (double)(KRandom::random()) / RAND_MAX;
+    double r = static_cast<double>(KRandom::random()) / RAND_MAX;
 	node->value()->setNumber(r * (y - x) + x);
 }
 void Executer::executeGetX(TreeNode* node) {
@@ -1067,7 +1067,7 @@
     if (!checkParameterQuantity(node, 1, 20000+Token::Round*100+90)) return;
    
     double val = node->child(0)->value()->number();
-    node->value()->setNumber((double)ROUND2INT(val));
+    node->value()->setNumber(static_cast<double>(ROUND2INT(val)));
 }
 void Executer::executeGetDirection(TreeNode* node) {
 //	//qDebug() << "called";
@@ -1085,7 +1085,7 @@
 	if (!checkParameterType(node, Value::Number, 20000+Token::Mod*100+91)) return;
 	double x = nodeX->value()->number();
 	double y = nodeY->value()->number();
-	double m = (double)(ROUND2INT(x) % ROUND2INT(y));
+    double m = static_cast<double>(ROUND2INT(x) % ROUND2INT(y));
 	node->value()->setNumber(m);
 }
 
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -195,7 +195,7 @@
 	a->setWhatsThis(i18n("Open File: Open an existing file"));
 
 	//TODO: Is this correct? -- It doesn't seem to be working
-	recentFilesAction = (KRecentFilesAction*)actionCollection()->addAction(KStandardAction::OpenRecent,  "file_recent", editor, SLOT(openFile(QUrl)));
+    recentFilesAction = dynamic_cast<KRecentFilesAction*>(actionCollection()->addAction(KStandardAction::OpenRecent,  "file_recent", editor, SLOT(openFile(QUrl))));
 	recentFilesAction->setStatusTip(i18n("Open a recently used file"));
 	recentFilesAction->setWhatsThis(i18n("Open Recent File: Open a recently used file"));
 	
diff --git a/src/sprite.cpp b/src/sprite.cpp
--- a/src/sprite.cpp
+++ b/src/sprite.cpp
@@ -42,7 +42,7 @@
 	
 	if (size <= 0 || w <= 0 || h <= 0) return;
 	
-	qreal s = ((qreal)size) / ((w > h) ? w : h);
+    qreal s = (static_cast<qreal>(size)) / ((w > h) ? w : h);
 	
 	setTransform(QTransform::fromScale(s, s), true);
 }
@@ -56,8 +56,8 @@
 	// but we want to the rotation to be around the SVG's center...
 	// This is why this "translation" is needed before the actual rotation.
 	QTransform transform = QTransform::fromTranslate(
-		renderer()->defaultSize().width()  * cos((degrees-135) * M_PI/180) * sqrt((double)2.0)/2,
-		renderer()->defaultSize().height() * sin((degrees-135) * M_PI/180) * sqrt((double)2.0)/2
+        renderer()->defaultSize().width()  * cos((degrees-135) * M_PI/180) * sqrt(static_cast<double>(2.0))/2,
+        renderer()->defaultSize().height() * sin((degrees-135) * M_PI/180) * sqrt(static_cast<double>(2.0))/2
 	);
 	transform.rotate(degrees);
 	setTransform(transform, true);