notepad | A local notepad

In your code, you aren't using the Listbox. So, I suggest to remove that part completely and do this.

You could utilize find and replace, then changing your regex just a little:

If you replace the command with "start Notepad" it will start Notepad in a separate process :)

You can use

You can fix this by choosing your desired OpenGL version

You can achieve this by pressing F6, and on the right bottom corner there is a list, choose raylib_source_compile. And on line 4, choose the desired OpenGL version (GRAPHICS_API_OPENGL_33, GRAPHICS_API_OPENGL_21 and GRAPHICS_API_OPENGL_11) then press enter for it to recompile the Raylib library.

If it still doesnt work, go to C:\raylib\raylib\src\config.h, uncomment line 47 and recompile Raylib (which worked for me)

If what you are trying to do is parse every number in the text file of yours to a Int32 and have a int array.

You would want to use File.ReadAllLines, to read every line from the file, string.Split each line by ';' and then parse every string number to a Int32:

I think the most similar thing to what you are asking for are Workspaces. From testing, they do in fact keep the files you had open, so long as you close the workspace in the menu first.

A Visual Studio Code "workspace" is the collection of one or more folders that are opened in a VS Code window (instance). In most cases, you will have a single folder opened as the workspace but, depending on your development workflow, you can include more than one folder, using an advanced configuration called Multi-root workspaces.

The concept of a workspace enables VS Code to:

• Configure settings that only apply to a specific folder or folders but not others.
• Persist task and debugger launch configurations that are only valid in the context of that workspace.
• Store and restore UI state associated with that workspace (for example, the files that are opened).
• Selectively enable or disable extensions only for that workspace.

If you look under File, you'll see the Workspace options:

The way it works is it saves a file that is a .code-workspace extension, but really the underlying structure is JSON. For example, the file might look like:

A std::fstream will close itself when it goes out of scope.

In your case however, the second call to std::fstream::open() fails, which sets the failbit on the stream (and could thrown an exception, but obviously doesn't in this case). With the failbit set, additional attempts to write to that stream will fail. See Return Value section here: http://www.cplusplus.com/reference/fstream/ofstream/open/