Windows build 0.0.25.2058

1. Copy some text
2. Open a script in the editor
3. Paste

The editor crashes. Seems to work with copying/pasting game objects too. Perhaps related: if you select an object and run the "Copy" editor command, you get an error saying that "There is no 'ClipboardEvent' available to run the command 'Copy'", and you get the same corresponding message if you try to use the "Paste" command.

    if (shell->IsKeyDown(Keys::Control) && (key == Keys::C || key == Keys::X) && shell->mOnCopy)
    {
      ClipboardData data;
      shell->mOnCopy(data, key == Keys::X, shell);
      ErrorIf(!data.mHasText && !data.mText.Empty(), "Clipboard Text was not empty, but HasText was not set");
      if (data.mHasText)
        WindowsSetClipboardText(data.mText.c_str());
      ErrorIf(data.mHasImage, "Copying image data not yet supported");
    }

The code above in Shell.cpp, specifically shell->mOnCopy(data, key == Keys::X, shell); will call into OsShell::ShellOnCopy.
This will eventually reach RootWidget::OnCutCopyPaste(ClipboardEvent* event).

void RootWidget::OnCutCopyPaste(ClipboardEvent* event)
{
  if (Widget* focusObject = mFocus)
    focusObject->DispatchBubble(event->EventId, event);
}

It will try to dispatch the clipboard event on the focused object. This is where the problem lies. The focused object in most cases will be the text element selected in the Objects view (if you didn't move the mouse over another element that steals the focus).
This element does not have the editor view port (which should handle the copy event) in its hierarchy, so the selected object(s) does not get copied as expected.

Compute shaders.
All of the rest of the shader and graphics features that we all want.
Please.

Select objects in the editor viewport, hit Space button, then select "Copy" from the list.
You will get a error notification: There is no 'ClipboardEvent' available to run the command 'Copy'.

The clipboard changes broke the copy command in the editor.
These methods in EditorCommands:

void SaveSelectionToClipboard(Editor* editor, Space* space);
void LoadObjectFromClipboard(Editor* editor, Space* space);

Were changed to

void SaveSelectionToClipboard(ClipboardEvent* event, Space* space);
void LoadObjectFromClipboard(ClipboardEvent* event, Space* space);

The problem with this is in EditorCommands.hpp:Commands2::Execute:

  void Execute(Command* command, CommandManager* manager) override
  {
    pt0* param0 = manager->GetContext()->Get<pt0>();
    pt1* param1 = manager->GetContext()->Get<pt1>();

    if (param0 == NULL)
      return CommandFailed(command, ZilchTypeId(pt0));

    if (param1 == NULL)
      return CommandFailed(command, ZilchTypeId(pt1));

    mFunction(param0, param1);
  }

This line

pt0* param0 = manager->GetContext()->Get<pt0>();

will return NULL since pt0 will be ClipboardEvent.
It's responsible for the second part of this issue #11.

It uses the SDL platform, and the cursor works on Linux and Windows, but not in Emscripten. This may have to do with the canvas element.

Windows launcher build 0.0.25.2058

1. Open the launcher via its exe
2. Try to open a project. It fails because it cannot find the UiWidget library
3. Open an editor build via its exe. The editor opens properly
4. Run the "OpenProject" command. It opens another instance of the launcher. In this new instance of the launcher, you are able to open builds

The platform needs to expose a MarkAsModified function to the operating system. For most OSes this would do nothing, but for Emscripten this would set a flag that shows the "unsaved changes" dialog when you click exit on the tab.

Currently the launcher shows the dialog for no reason, and the editor shows it when no changes have been made.