New selection method, fixed crashing

ArrowTool.cpp

@@ -1,7 +1,10 @@
 #include "ArrowTool.h"
+#include "Application.h"
 
 ArrowTool::ArrowTool(void)
 {
+	lctrlDown = false;
+	rctrlDown = false;
 }
 
 ArrowTool::~ArrowTool(void)
@@ -10,10 +13,14 @@ ArrowTool::~ArrowTool(void)
 
 void ArrowTool::onButton1MouseDown(Mouse mouse)
 {
+	if(!lctrlDown && !rctrlDown)
 		g_selectedInstances.clear();
 	PartInstance * target = mouse.getTarget();
-	if(target != NULL)
+	if(target != NULL && std::find(g_selectedInstances.begin(), g_selectedInstances.end(), target) == g_selectedInstances.end())
 		g_selectedInstances.push_back(target);
+	if(g_selectedInstances.size() == 0)
+		g_selectedInstances.push_back(g_dataModel);
+	g_usableApp->_propWindow->UpdateSelected(g_selectedInstances[0]);
 }
 void ArrowTool::onMouseMoved(Mouse mouse)
 {
@@ -26,3 +33,17 @@ void ArrowTool::onSelect(Mouse mouse)
 {
 	this->setCursor(GetFileInPath("/content/images/ArrowCursor.png"));
 }
+
+void ArrowTool::onKeyDown(int key)
+{
+	if(key == VK_CONTROL)
+	{
+		lctrlDown = true;
+	}
+}
+
+void ArrowTool::onKeyUp(int key)
+{
+	if(key == VK_CONTROL)
+		lctrlDown = false;
+}

ArrowTool.h

@@ -9,5 +9,10 @@ public:
 	~ArrowTool(void); //OnDeselect?
 	virtual void onButton1MouseDown(Mouse);
 	virtual void onMouseMoved(Mouse mouse);
-	virtual void onSelect(Mouse mouse); //Why is this not being called
+	virtual void onSelect(Mouse mouse); 
+	virtual void onKeyDown(int key);
+	virtual void onKeyUp(int key);
+private:
+	bool lctrlDown;
+	bool rctrlDown;
 };

Tool.cpp

@@ -20,8 +20,8 @@ void Tool::onMouseMoved(Mouse mouse){}
 void Tool::onSelect(Mouse mouse){}
 void Tool::onDeselect(Mouse mouse){}
 void Tool::onMouseScroll(Mouse mouse){}
-void Tool::onKeyDown(char key){}
+void Tool::onKeyDown(int key){}
-void Tool::onKeyUp(char key){}
+void Tool::onKeyUp(int key){}
 void Tool::setCursor(std::string str)
 {
 	cursorString = str;

Tool.h

@@ -24,8 +24,8 @@ public:
 	virtual void onSelect(Mouse);//yes
 	virtual void onDeselect(Mouse);//yes
 	virtual void onMouseScroll(Mouse);//Kinda
-	virtual void onKeyDown(char);//yes
+	virtual void onKeyDown(int);//yes
-	virtual void onKeyUp(char);//yes
+	virtual void onKeyUp(int);//yes
 	virtual int getCursorId();//yes
 protected:
 	virtual void setCursor(std::string);