Minor Update - Import file

Feat :

+ Import Button to import from file a 3D object

enginecustom/Systemclass.cpp

@@ -159,7 +159,7 @@ bool SystemClass::Frame()
 		return false;
 	}
 
-	// Render ImGui
+	// Render ImGui 
 	m_imguiManager->ImGuiWidgetRenderer(m_Application);
 
 	return true;

enginecustom/applicationclass.cpp

@@ -441,6 +441,7 @@ void ApplicationClass::Shutdown()
 		delete[] m_MouseStrings;
 		m_MouseStrings = 0;
 	}
+
 	// Release the text object for the fps string.
 	if (m_FpsString)
 	{

enginecustom/imguiManager.cpp

@@ -74,6 +74,31 @@ void imguiManager::WidgetAddObject(ApplicationClass* app)
 		}
 		ImGui::SameLine();
 		ImGui::Text("Number of cubes: %d", app->GetCubeCount());
+
+		if (ImGui::Button("Import Object"))
+		{
+			// Open file dialog
+			OPENFILENAME ofn;
+			WCHAR szFile[260];
+			ZeroMemory(&ofn, sizeof(ofn));
+			ofn.lStructSize = sizeof(ofn);
+			ofn.hwndOwner = NULL;
+			ofn.lpstrFile = szFile;
+			ofn.lpstrFile[0] = '\0';
+			ofn.nMaxFile = sizeof(szFile);
+			ofn.lpstrFilter = L"OBJ\0*.obj\0TXT\0*.txt\0KOBJ\0*.kobj";
+			ofn.nFilterIndex = 1;
+			ofn.lpstrFileTitle = NULL;
+			ofn.nMaxFileTitle = 0;
+			ofn.lpstrInitialDir = NULL;
+			ofn.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;
+
+			if (GetOpenFileName(&ofn))
+			{
+				app->AddKobject(ofn.lpstrFile);
+			}
+
+		}
 	}
 }