FX: Fix to avoid UI crashes for disabled Tone Generators

src/minidexed.cpp

@@ -724,8 +724,13 @@ void CMiniDexed::setInsertFXType (unsigned nType, unsigned nTG)
 std::string CMiniDexed::getInsertFXName (unsigned nTG)
 {
 	assert (nTG < CConfig::AllToneGenerators);
+	if (nTG < m_nToneGenerators)
+	{
+		assert (m_InsertFX[nTG]);
 		return m_InsertFX[nTG]->getName();
 	}
+	return "";
+}
 
 void CMiniDexed::setMidiFXType (unsigned nType, unsigned nTG)
 {
@@ -751,8 +756,13 @@ void CMiniDexed::setMidiFXType (unsigned nType, unsigned nTG)
 std::string CMiniDexed::getMidiFXName (unsigned nTG)
 {
 	assert (nTG < CConfig::AllToneGenerators);
+	if (nTG < m_nToneGenerators)
+	{
+		assert (m_MidiArp[nTG]);
 		return m_MidiArp[nTG]->getName();
 	}
+	return "";
+}
 
 void CMiniDexed::setSendFX1Type (unsigned nType)
 {
@@ -1336,8 +1346,18 @@ int CMiniDexed::GetTGParameter (TTGParameter Parameter, unsigned nTG)
 	case TGParameterMIDIChannel:	return m_nMIDIChannel[nTG];
 	case TGParameterSendFX1:	return m_nSendFX1[nTG];
 	case TGParameterReverbSend:	return m_nSendFX2[nTG];
-	case TGParameterInsertFXType:	return m_InsertFX[nTG]->getId();
-	case TGParameterMidiFXType:	return m_MidiArp[nTG]->getId();
+	case TGParameterInsertFXType:
+		if (nTG < m_nToneGenerators)
+		{
+			return m_InsertFX[nTG]->getId();
+		}
+		return 0;
+	case TGParameterMidiFXType:
+		if (nTG < m_nToneGenerators)
+		{
+			return m_MidiArp[nTG]->getId();
+		}
+		return 0;
 	case TGParameterPitchBendRange:	return m_nPitchBendRange[nTG];
 	case TGParameterPitchBendStep:	return m_nPitchBendStep[nTG];
 	case TGParameterPortamentoMode:		return m_nPortamentoMode[nTG];

src/uimenu.cpp

@@ -1030,6 +1030,9 @@ void CUIMenu::MenuHandlerMidiFX (CUIMenu *pUIMenu, TMenuEvent Event)
 		pUIMenu->m_pCurrentMenu = s_MidiFX;
 	}
 
+	// Identify TG
+	unsigned nTG = pUIMenu->m_nMenuStackParameter[pUIMenu->m_nCurrentMenuDepth-1];
+	
 	switch (Event)
 	{
 	case MenuEventUpdate:
@@ -1037,6 +1040,12 @@ void CUIMenu::MenuHandlerMidiFX (CUIMenu *pUIMenu, TMenuEvent Event)
 
 	case MenuEventSelect:				// push menu
 		assert (pUIMenu->m_nCurrentMenuDepth < MaxMenuDepth);
+
+		// Check if TG is enabled
+		if (nTG >= pUIMenu->m_pConfig->GetToneGenerators()) {
+			break;
+		}
+
 		pUIMenu->m_MenuStackParent[pUIMenu->m_nCurrentMenuDepth] = pUIMenu->m_pParentMenu;
 		pUIMenu->m_MenuStackMenu[pUIMenu->m_nCurrentMenuDepth] = pUIMenu->m_pCurrentMenu;
 		pUIMenu->m_nMenuStackItem[pUIMenu->m_nCurrentMenuDepth]
@@ -1082,8 +1091,6 @@ void CUIMenu::MenuHandlerMidiFX (CUIMenu *pUIMenu, TMenuEvent Event)
 
 	if (pUIMenu->m_pCurrentMenu)				// if this is another menu?
 	{
-		// Identify TG
-		unsigned nTG = pUIMenu->m_nMenuStackParameter[pUIMenu->m_nCurrentMenuDepth-1]; 
 		// Create TG label
 		string TG ("TG");
 		TG += to_string (nTG+1);
@@ -1117,6 +1124,9 @@ void CUIMenu::MenuHandlerInsertFX (CUIMenu *pUIMenu, TMenuEvent Event)
 		pUIMenu->m_pCurrentMenu = s_InsertFX;
 	}
 
+	// Identify TG
+	unsigned nTG = pUIMenu->m_nMenuStackParameter[pUIMenu->m_nCurrentMenuDepth-1];
+	
 	switch (Event)
 	{
 	case MenuEventUpdate:
@@ -1124,6 +1134,12 @@ void CUIMenu::MenuHandlerInsertFX (CUIMenu *pUIMenu, TMenuEvent Event)
 
 	case MenuEventSelect:				// push menu
 		assert (pUIMenu->m_nCurrentMenuDepth < MaxMenuDepth);
+		
+		// Check if TG is enabled
+		if (nTG >= pUIMenu->m_pConfig->GetToneGenerators()) {
+			break;
+		}
+
 		pUIMenu->m_MenuStackParent[pUIMenu->m_nCurrentMenuDepth] = pUIMenu->m_pParentMenu;
 		pUIMenu->m_MenuStackMenu[pUIMenu->m_nCurrentMenuDepth] = pUIMenu->m_pCurrentMenu;
 		pUIMenu->m_nMenuStackItem[pUIMenu->m_nCurrentMenuDepth]
@@ -1169,8 +1185,6 @@ void CUIMenu::MenuHandlerInsertFX (CUIMenu *pUIMenu, TMenuEvent Event)
 
 	if (pUIMenu->m_pCurrentMenu)				// if this is another menu?
 	{
-		// Identify TG
-		unsigned nTG = pUIMenu->m_nMenuStackParameter[pUIMenu->m_nCurrentMenuDepth-1]; 
 		// Create TG label
 		string TG ("TG");
 		TG += to_string (nTG+1);