CEditEx 可改变字体颜色，大小与背景颜

 ///////////////////CEditEx.h

#if !defined(AFX_EDITEX_H__9B5C9C39_B497_4EBB_91BC_8D23F5BFEDBE__INCLUDED_) #define AFX_EDITEX_H__9B5C9C39_B497_4EBB_91BC_8D23F5BFEDBE__INCLUDED_ #if _MSC_VER > 1000 #pragma once #endif // _MSC_VER > 1000 // EditEx.h : header file // ///////////////////////////////////////////////////////////////////////////// // CEditEx window class CEditEx : public CEdit { // Construction public: CEditEx(); // Attributes public: // Operations public: // Overrides // ClassWizard generated virtual function overrides //{{AFX_VIRTUAL(CEditEx) //}}AFX_VIRTUAL // Implementation public: virtual ~CEditEx(); void SetTextColor(COLORREF rgb); void SetBackColor(COLORREF rgb); void SetTextFont(int nSize); // Generated message map functions protected: //text and text background colors COLORREF m_crText; COLORREF m_crBackGnd; //background brush CBrush m_brBackGnd; //{{AFX_MSG(CEditEx) afx_msg HBRUSH CtlColor(CDC* pDC, UINT nCtlColor); //}}AFX_MSG DECLARE_MESSAGE_MAP() }; ///////////////////////////////////////////////////////////////////////////// //{{AFX_INSERT_LOCATION}} // Microsoft Visual C++ will insert additional declarations immediately before the previous line. #endif // !defined(AFX_EDITEX_H__9B5C9C39_B497_4EBB_91BC_8D23F5BFEDBE__INCLUDED_)

 

////////////////////CEditEx.cpp

// EditEx.cpp : implementation file // #include "stdafx.h" #include "EditEx.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // CEditEx CEditEx::CEditEx() { } CEditEx::~CEditEx() { } BEGIN_MESSAGE_MAP(CEditEx, CEdit) //{{AFX_MSG_MAP(CEditEx) ON_WM_CTLCOLOR_REFLECT() //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CEditEx message handlers HBRUSH CEditEx::CtlColor(CDC* pDC, UINT nCtlColor) { // TODO: Change any attributes of the DC here // TODO: Return a non-NULL brush if the parent's handler should not be called // TODO: Return a non-NULL brush if the parent's handler should not be called //set text color pDC->SetTextColor(m_crText); //set the text's background color pDC->SetBkColor(m_crBackGnd); //return the brush used for background this sets control backgroun return m_brBackGnd; } void CEditEx::SetBackColor(COLORREF rgb) { //set background color ref (used for text's background) m_crBackGnd = rgb; //free brush if (m_brBackGnd.GetSafeHandle()) m_brBackGnd.DeleteObject(); //set brush to new color m_brBackGnd.CreateSolidBrush(rgb); //redraw Invalidate(TRUE); } void CEditEx::SetTextColor(COLORREF rgb) { //set text color ref m_crText = rgb; //redraw Invalidate(TRUE); } void CEditEx::SetTextFont(int nSize) { CClientDC dc(this); CFont* font = new CFont; font->CreatePointFont(nSize, _T("System"), &dc); SetFont(font, TRUE); delete font; }