Developed and integrated stamp drawing tools for the semicolon213/2024_GuestBook_T1 repository, enhancing the main canvas to support user-created stamp content. Leveraged C++ with GDI and Windows API to add stamp icon buttons, implement stamp drawing logic, and extend save and load functionality to preserve stamp metadata. Focused on maintainability by refactoring comments and clarifying drawing-related variables and methods within the DW_Canvas.cpp module. This work improved the project’s resource management and code readability, laying a foundation for future feature expansion and richer user interactions. The changes addressed both user experience and long-term code quality within a focused development period.