To save all files open in Visual C++ select the File:Save All menu item.
To save the current Visual C++ workspace, select the File:Save Workspace menu item.
To save all files in Visual C++ and build your resource-only DLL select the Build:Rebuild All menu item. Each time you make a change to your resources, you must re-select the Build:Rebuild All menu item for the changes to appear in your DLL.
After you build your DLL, see the topic Accessing Dialog Builder Resources with Origin C to learn how to access your DLL using Origin C.
Note: Before you build or rebuild your DLL you must make sure that your DLL is not currently loaded by Origin. If you have accessed your DLL in the current session of Origin (even if your dialog is not currently open) you must first close Origin before rebuilding.