processMessage method

int? processMessage(int hwnd, int uMsg, int wParam, int lParam,)

Processes a message.

• Called by WindowClass.windowProcDefault when the messages doesn't have a default processor.
• Should return a value if this messages was processed, or null to send to DefWindowProc.

Implementation

int? processMessage(int hwnd, int uMsg, int wParam, int lParam) => null;