Index: scidavis/src/ApplicationWindow.h
===================================================================
---  scidavis-0.2.3/scidavis/src/ApplicationWindow.h	(révision 1180)
+++ scidavis-0.2.3/scidavis/src/ApplicationWindow.h	(révision 1181)
@@ -638,6 +638,7 @@
 	void showHelp();
 	static void showStandAloneHelp();
 	void chooseHelpFolder();
+	QString guessHelpFolder();
 	void showPlotWizard();
 	void showFitPolynomDialog();
 	void showIntegrationDialog();
@@ -1057,7 +1058,10 @@
     QAction *actionShowExpDecayDialog, *actionShowTwoExpDecayDialog, *actionShowExpDecay3Dialog;
     QAction *actionFitExpGrowth, *actionFitSigmoidal, *actionFitGauss, *actionFitLorentz, *actionShowFitDialog;
     QAction *actionShowAxisDialog, *actionShowTitleDialog;
-    QAction *actionAbout, *actionShowHelp, *actionChooseHelpFolder;
+    QAction *actionAbout, *actionShowHelp;
+#ifdef DYNAMIC_MANUAL_PATH
+   	QAction *actionChooseHelpFolder;
+#endif
     QAction *actionRename, *actionCloseWindow, *actionConvertTable;
     QAction *actionAddColToTable, *actionDeleteLayer, *actionInterpolate;
     QAction *actionResizeActiveWindow, *actionHideActiveWindow;
Index: scidavis/src/ApplicationWindow.cpp
===================================================================
--- scidavis-0.2.3/scidavis/src/ApplicationWindow.cpp	(révision 1180)
+++ scidavis-0.2.3/scidavis/src/ApplicationWindow.cpp	(révision 1181)
@@ -915,7 +915,9 @@
 	help->setFont(appFont);
 
 	help->addAction(actionShowHelp);
+#ifdef DYNAMIC_MANUAL_PATH
 	help->addAction(actionChooseHelpFolder);
+#endif
 	help->addSeparator();
 	help->addAction(actionHomePage);
 	help->addAction(actionCheckUpdates);
@@ -4183,42 +4185,27 @@
 	settings.beginGroup("/Paths");
 	workingDir = settings.value("/WorkingDir", qApp->applicationDirPath()).toString();
 
+#ifdef DYNAMIC_MANUAL_PATH
 #ifdef MANUAL_PATH
 	helpFilePath = settings.value("/HelpFile", MANUAL_PATH "/index.html").toString();
 #elif defined(DOC_PATH)
 	helpFilePath = settings.value("/HelpFile", DOC_PATH "/manual/index.html").toString();
-#elif defined(Q_OS_WIN)
-	helpFilePath = settings.value("/HelpFile", qApp->applicationDirPath()+"/manual/index.html").toString();
 #else
 	QVariant help_file_setting = settings.value("/HelpFile");
 	if (help_file_setting.isValid())
 		helpFilePath = help_file_setting.toString();
-	else {
-		QFileInfo help_file_info;
-		QString help_dir_base = QString("/usr/share/doc/scidavis-%1.%2.%3")
-			.arg((scidavis_version & 0xff0000) >> 16)
-			.arg((scidavis_version & 0x00ff00) >> 8)
-			.arg(scidavis_version & 0x0000ff);
-		help_file_info.setFile(help_dir_base);
-		if (!help_file_info.exists())
-			help_dir_base = "/usr/share/doc/scidavis";
-		QStringList help_dir_suffixes;
-		QString locale = QLocale().name(); // language_country according to ISO 639 and 3166, respectively
-		help_dir_suffixes
-			<< QString("-") + locale
-			<< QString("-") + locale.section('_',0,0)
-			<< QString("-") + appLanguage
-			<< "-en"
-			<< "";
-		foreach (QString suffix, help_dir_suffixes) {
-			help_file_info.setFile(help_dir_base + QString("/manual%1/index.html").arg(suffix));
-			if (help_file_info.exists())
-				break;
-		}
-		// intentionally defaults to /usr/share/doc/scidavis/manual/index.html even if it doesn't exist
-		helpFilePath = help_file_info.absoluteFilePath();
-	}
+	else
+		helpFilePath = guessHelpFolder();
 #endif
+#else // ifdef DYNAMIC_MANUAL_PATH
+#ifdef MANUAL_PATH
+	helpFilePath = MANUAL_PATH "/index.html";
+#elif defined(DOC_PATH)
+	helpFilePath = DOC_PATH "/manual/index.html";
+#else
+	helpFilePath = guessHelpFolder();
+#endif
+#endif
 
 #ifdef Q_OS_WIN
 	fitPluginsPath = settings.value("/FitPlugins", "fitPlugins").toString();
@@ -8237,13 +8224,8 @@
 				tr("Please indicate the location of the help file!")+"<br>"+
 				tr("The manual can be downloaded from the following internet address:")+
 				"<p><a href = http://sourceforge.net/project/showfiles.php?group_id=199120>http://sourceforge.net/project/showfiles.php?group_id=199120</a></p>");
-		QString fn = QFileDialog::getOpenFileName(QDir::currentDirPath(), "*.html", this );
-		if (!fn.isEmpty())
-		{
-			QFileInfo fi(fn);
-			helpFilePath=fi.absFilePath();
-			saveSettings();
-		}
+		chooseHelpFolder();
+		saveSettings();
 	}
 
 	QFileInfo fi(helpFilePath);
@@ -10721,8 +10703,10 @@
 	actionShowHelp->setShortcut( tr("Ctrl+H") );
 	connect(actionShowHelp, SIGNAL(activated()), this, SLOT(showHelp()));
 
+#ifdef DYNAMIC_MANUAL_PATH
 	actionChooseHelpFolder = new QAction(tr("&Choose Help Folder..."), this);
 	connect(actionChooseHelpFolder, SIGNAL(activated()), this, SLOT(chooseHelpFolder()));
+#endif
 
 	actionRename = new QAction(tr("&Rename Window"), this);
 	connect(actionRename, SIGNAL(activated()), this, SLOT(renameActiveWindow()));
@@ -11187,7 +11171,10 @@
 	actionShowHelp->setMenuText(tr("&Help"));
 	actionShowHelp->setShortcut(tr("Ctrl+H"));
 
+#ifdef DYNAMIC_MANUAL_PATH
 	actionChooseHelpFolder->setMenuText(tr("&Choose Help Folder..."));
+#endif
+
 	actionRename->setMenuText(tr("&Rename Window"));
 
 	actionCloseWindow->setMenuText(tr("Close &Window"));
@@ -13695,3 +13682,34 @@
 		result.append(aspect->name());
 	return result;
 }
+
+QString ApplicationWindow::guessHelpFolder()
+{
+#if defined(Q_OS_WIN)
+	return qApp->applicationDirPath()+"/manual/index.html";
+#else
+	QFileInfo help_file_info;
+	QString help_dir_base = QString("/usr/share/doc/scidavis-%1.%2.%3")
+		.arg((SciDAVis::version() & 0xff0000) >> 16)
+		.arg((SciDAVis::version() & 0x00ff00) >> 8)
+		.arg(SciDAVis::version() & 0x0000ff);
+	help_file_info.setFile(help_dir_base);
+	if (!help_file_info.exists())
+		help_dir_base = "/usr/share/doc/scidavis";
+	QStringList help_dir_suffixes;
+	QString locale = QLocale().name(); // language_country according to ISO 639 and 3166, respectively
+	help_dir_suffixes
+		<< QString("-") + locale
+		<< QString("-") + locale.section('_',0,0)
+		<< QString("-") + appLanguage
+		<< "-en"
+		<< "";
+	foreach (QString suffix, help_dir_suffixes) {
+		help_file_info.setFile(help_dir_base + QString("/manual%1/index.html").arg(suffix));
+		if (help_file_info.exists())
+			break;
+	}
+	// intentionally defaults to /usr/share/doc/scidavis/manual/index.html even if it doesn't exist
+	return help_file_info.absoluteFilePath();
+#endif
+}
Index: scidavis/scidavis.pro
===================================================================
--- scidavis-0.2.3/scidavis/scidavis.pro	(révision 1180)
+++ scidavis-0.2.3/scidavis/scidavis.pro	(révision 1181)
@@ -42,6 +42,11 @@
 ### Usually, the manual will be expected in the "manual" subfolder of "documentation.path" (see above).
 ### You can override this, uncomment and adjust the path behind the '=' in the next line.
 # manual.path = $$INSTALLBASE/share/doc/scidavis/manual
+### Enables choosing of help folder at runtime, instead of relying on the above path only.
+### The downside is that the help folder will be remembered as a configuration option, so a binary
+### package cannot easily update the path for its users.
+### Dynamic selection of the manual path was the only available option up until SciDAVis 0.2.3.
+DEFINES += DYNAMIC_MANUAL_PATH
 ### Important: translationfiles.path will be the directory where scidavis expects
 ### the translation .qm files at runtime. Therefore you need to set it corretly even if 
 ### you do not use this project file to generate the translation files.