Fix keyboard multi-select failure in ksysguard

(cherry picked from commit 64f3533baa)

ksysguard/gui/SensorDisplayLib/ProcessList.cc

@@ -228,6 +228,8 @@ ProcessList::ProcessList(TQWidget *parent, const char* name)
 	 * settings. */
 	connect(header(), TQT_SIGNAL(clicked(int)), this, TQT_SLOT(sortingChanged(int)));
 
+	ctrlKeyDown = false;
+	shiftKeyDown = false;
 	treeViewEnabled = false;
 	openAll = true;
 
@@ -293,6 +295,8 @@ ProcessList::getSelectedAsStrings()
 }
 bool
 ProcessList::update(const TQString& list)
+{
+	if ((!shiftKeyDown) && (!ctrlKeyDown))
 	{
 		/* Disable painting to avoid flickering effects,
 		* especially when in tree view mode.
@@ -353,6 +357,7 @@ ProcessList::update(const TQString& list)
 		viewport()->setUpdatesEnabled(true);
 	
 		triggerUpdate();
+	}
 
 	return (true);
 }
@@ -360,7 +365,7 @@ ProcessList::update(const TQString& list)
 void
 ProcessList::setTreeView(bool tv)
 {
-	if (treeViewEnabled = tv)
+	if ((treeViewEnabled = tv))
 	{
 		savedWidth[0] = columnWidth(0);
 		openAll = true;
@@ -938,4 +943,28 @@ ProcessList::selectAllChilds(int pid, bool select)
 	}
 }
 
+void
+ProcessList::keyPressEvent(TQKeyEvent *e)
+{
+	if (e->key() == Key_Shift) {
+		shiftKeyDown = true;
+	}
+	if (e->key() == Key_Control) {
+		ctrlKeyDown = true;
+	}
+	KListView::keyPressEvent(e);
+}
+
+void
+ProcessList::keyReleaseEvent(TQKeyEvent *e)
+{
+	if (e->key() == Key_Shift) {
+		shiftKeyDown = false;
+	}
+	if (e->key() == Key_Control) {
+		ctrlKeyDown = false;
+	}
+	KListView::keyReleaseEvent(e);
+}
+
 #include "ProcessList.moc"

ksysguard/gui/SensorDisplayLib/ProcessList.h

@@ -170,6 +170,10 @@ signals:
 
 	void listModified(bool);
 
+protected:
+	void keyPressEvent(TQKeyEvent *e);
+	void keyReleaseEvent(TQKeyEvent *e);
+
 private:
 	// items of table header RMB popup menu
 	enum
@@ -244,6 +248,8 @@ private:
 	bool killSupported;
 	bool treeViewEnabled;
 	bool openAll;
+	bool ctrlKeyDown;
+	bool shiftKeyDown;
 
 	/* The following lists are primarily used to store table specs between
 	 * load() and the actual table creation in addColumn(). */