Examples: Updated for reorganized context functions. Calling CreateContext(), DestroyContext() in example code. Removed Shutdown() from binding code. (#1565, #586, #992, #1007, #1558)

examples/directx11_example/main.cpp

@@ -125,6 +125,7 @@ int main(int, char**)
     UpdateWindow(hwnd);
 
     // Setup ImGui binding
+    ImGui::CreateContext();
     ImGui_ImplDX11_Init(hwnd, g_pd3dDevice, g_pd3dDeviceContext);
 
     // Setup style
@@ -207,6 +208,8 @@ int main(int, char**)
     }
 
     ImGui_ImplDX11_Shutdown();
+    ImGui::DestroyContext();
+
     CleanupDeviceD3D();
     UnregisterClass(_T("ImGui Example"), wc.hInstance);