Initial commit: ROW Client source code

Game client codebase including:
- CharacterActionControl: Character and creature management
- GlobalScript: Network, items, skills, quests, utilities
- RYLClient: Main client application with GUI and event handlers
- Engine: 3D rendering engine (RYLGL)
- MemoryManager: Custom memory allocation
- Library: Third-party dependencies (DirectX, boost, etc.)
- Tools: Development utilities

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Tools/Checksum/ChecksumDlg.h

@@ -0,0 +1,55 @@
+// ChecksumDlg.h : header file
+//
+
+#if !defined(AFX_CHECKSUMDLG_H__B4118AC0_56D7_4A84_8A74_704A84A7FF06__INCLUDED_)
+#define AFX_CHECKSUMDLG_H__B4118AC0_56D7_4A84_8A74_704A84A7FF06__INCLUDED_
+
+#if _MSC_VER > 1000
+#pragma once
+#endif // _MSC_VER > 1000
+
+/////////////////////////////////////////////////////////////////////////////
+// CChecksumDlg dialog
+
+class CChecksumDlg : public CDialog
+{
+// Construction
+public:
+	CChecksumDlg(CWnd* pParent = NULL);	// standard constructor
+
+// Dialog Data
+	//{{AFX_DATA(CChecksumDlg)
+	enum { IDD = IDD_CHECKSUM_DIALOG };
+		// NOTE: the ClassWizard will add data members here
+	//}}AFX_DATA
+
+	// ClassWizard generated virtual function overrides
+	//{{AFX_VIRTUAL(CChecksumDlg)
+	protected:
+	virtual void DoDataExchange(CDataExchange* pDX);	// DDX/DDV support
+	//}}AFX_VIRTUAL
+
+// Implementation
+protected:
+	HICON m_hIcon;
+
+	// Generated message map functions
+	//{{AFX_MSG(CChecksumDlg)
+	virtual BOOL OnInitDialog();
+	afx_msg void OnPaint();
+	afx_msg HCURSOR OnQueryDragIcon();
+	//}}AFX_MSG
+	DECLARE_MESSAGE_MAP()
+
+	char m_strClientPath[MAX_PATH];
+
+	unsigned long  CheckOCTREE();
+
+	bool SetCheckSum(const char* szRegKey, const char* szRegValue, bool bBattleServer, 
+		unsigned long dwViewPathID, unsigned long dwViewCheckSumID, unsigned long dwViewVersionID);
+};
+
+//{{AFX_INSERT_LOCATION}}
+// Microsoft Visual C++ will insert additional declarations immediately before the previous line.
+
+#endif // !defined(AFX_CHECKSUMDLG_H__B4118AC0_56D7_4A84_8A74_704A84A7FF06__INCLUDED_)