CButton类的继承+重写--本类来自孙鑫老师C++课堂

本类摘自孙鑫老师C++课堂，如果转载请注明！

直接将头文件和CPP文件加入工程，利用类成员函数对Button控件进行设置（颜色、边框、背景等。。。）

头文件↓

//
// Class: CButtonST
//
// Compiler: Visual C++
// Tested on: Visual C++ 5.0
//
// Version: See GetVersionC() or GetVersionI()
//
// Created: xx/xxxx/1998
// Updated: 19/September/1999
//
// Author: Davide Calabro' davide_calabro@yahoo.com
//
#ifndef _BTNST_H
#define _BTNST_H

#if _MSC_VER >= 1000
#pragma once
#endif // _MSC_VER >= 1000

// CBtnST.h : header file
//

// Comment this if you don't want that CButtonST hilights itself
// also when the window is inactive (like happens in Internet Explorer)
//#define ST_LIKEIE

// Comment this if you don't want to use CMemDC class
//#define ST_USE_MEMDC

/
// CButtonST window

class CButtonST : public CButton
{
// Construction
public:
CButtonST();
~CButtonST();
enum {ST_ALIGN_HORIZ, ST_ALIGN_VERT, ST_ALIGN_HORIZ_RIGHT};

// Attributes
public:

// Operations
public:

// Overrides
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CButtonST)
public:
virtual void DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct);
virtual BOOL PreTranslateMessage(MSG* pMsg);
protected:
virtual void PreSubclassWindow();
virtual LRESULT DefWindowProc(UINT message, WPARAM wParam, LPARAM lParam);
//}}AFX_VIRTUAL

// Implementation
public:
void DrawTransparent(BOOL bRepaint = FALSE);

BOOL GetDefault();

void SetTooltipText(int nId, BOOL bActivate = TRUE);
void SetTooltipText(CString* spText, BOOL bActivate = TRUE);
void ActivateTooltip(BOOL bEnable = TRUE);

BOOL SetBtnCursor(int nCursorId = -1);

void SetFlatFocus(BOOL bDrawFlatFocus, BOOL bRepaint = FALSE);
BOOL GetFlatFocus();

void SetDefaultActiveFgColor(BOOL bRepaint = FALSE);
void SetActiveFgColor(COLORREF crNew, BOOL bRepaint = FALSE);
const COLORREF GetActiveFgColor();

void SetDefaultActiveBgColor(BOOL bRepaint = FALSE);
void SetActiveBgColor(COLORREF crNew, BOOL bRepaint = FALSE);
const COLORREF GetActiveBgColor();

void SetDefaultInactiveFgColor(BOOL bRepaint = FALSE);
void SetInactiveFgColor(COLORREF crNew, BOOL bRepaint = FALSE);
const COLORREF GetInactiveFgColor();

void SetDefaultInactiveBgColor(BOOL bRepaint = FALSE);
void SetInactiveBgColor(COLORREF crNew, BOOL bRepaint = FALSE);
const COLORREF GetInactiveBgColor();

void SetShowText(BOOL bShow = TRUE);
BOOL GetShowText();

void SetAlign(int nAlign);
int GetAlign();

void SetFlat(BOOL bState = TRUE);
BOOL GetFlat();

void DrawBorder(BOOL bEnable = TRUE);
void SetIcon(int nIconInId, int nIconOutId = NULL);
void SetIcon(HICON hIconIn, HICON hIconOut = NULL);

static const short GetVersionI();
static const char* GetVersionC();

protected:
//{{AFX_MSG(CButtonST)
afx_msg void OnCaptureChanged(CWnd *pWnd);
afx_msg BOOL OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message);
afx_msg void OnKillFocus(CWnd* pNewWnd);
afx_msg void OnMouseMove(UINT nFlags, CPoint point);
afx_msg void OnSysColorChange();
//}}AFX_MSG

afx_msg HBRUSH CtlColor(CDC* pDC, UINT nCtlColor);

DECLARE_MESSAGE_MAP()
private:
void DrawTheIcon(CDC* pDC, CString* title, RECT* rcItem, CRect* captionRect, BOOL IsPressed, BOOL IsDisabled);
void InitToolTip();
void PaintBk(CDC* pDC);

int m_nAlign;
BOOL m_bShowText;
BOOL m_bDrawBorder;
BOOL m_bIsFlat;
BOOL m_MouseOnButton;
BOOL m_bDrawFlatFocus;

HCURSOR m_hCursor;
CToolTipCtrl m_ToolTip;

HICON m_hIconIn;
HICON m_hIconOut;
BYTE m_cyIcon;
BYTE m_cxIcon;

CDC m_dcBk;
CBitmap m_bmpBk;
CBitmap* m_pbmpOldBk;
BOOL m_bDrawTransparent;

BOOL m_bIsDefault;

COLORREF m_crInactiveBg;
COLORREF m_crInactiveFg;
COLORREF m_crActiveBg;
COLORREF m_crActiveFg;
};

#ifdef ST_USE_MEMDC
//
// CMemDC - memory DC
//
// Author: Keith Rule
// Email: keithr@europa.com
// Copyright 1996-1997, Keith Rule
//
// You may freely use or modify this code provided this
// Copyright is included in all derived versions.
//
// History - 10/3/97 Fixed scrolling bug.
// Added print support.
// 25 feb 98 - fixed minor assertion bug
//
// This class implements a memory Device Context

class CMemDC : public CDC
{
public:

// constructor sets up the memory DC
CMemDC(CDC* pDC) : CDC()
{
ASSERT(pDC != NULL);

m_pDC = pDC;
m_pOldBitmap = NULL;
m_bMemDC = !pDC->IsPrinting();

if (m_bMemDC) // Create a Memory DC
{
pDC->GetClipBox(&m_rect);
CreateCompatibleDC(pDC);
m_bitmap.CreateCompatibleBitmap(pDC, m_rect.Width(), m_rect.Height());
m_pOldBitmap = SelectObject(&m_bitmap);
SetWindowOrg(m_rect.left, m_rect.top);
}
else // Make a copy of the relevent parts of the current DC for printing
{
m_bPrinting = pDC->m_bPrinting;
m_hDC = pDC->m_hDC;
m_hAttribDC = pDC->m_hAttribDC;
}
}

// Destructor copies the contents of the mem DC to the original DC
~CMemDC()
{
if (m_bMemDC)
{
// Copy the offscreen bitmap onto the screen.
m_pDC->BitBlt(m_rect.left, m_rect.top, m_rect.Width(), m_rect.Height(),
this, m_rect.left, m_rect.top, SRCCOPY);

//Swap back the original bitmap.
SelectObject(m_pOldBitmap);
} else {
// All we need to do is replace the DC with an illegal value,
// this keeps us from accidently deleting the handles associated with
// the CDC that was passed to the constructor.
m_hDC = m_hAttribDC = NULL;
}
}

// Allow usage as a pointer
CMemDC* operator->() {return this;}

// Allow usage as a pointer
operator CMemDC*() {return this;}

private:
CBitmap m_bitmap; // Offscreen bitmap
CBitmap* m_pOldBitmap; // bitmap originally found in CMemDC
CDC* m_pDC; // Saves CDC passed in constructor
CRect m_rect; // Rectangle of drawing area.
BOOL m_bMemDC; // TRUE if CDC really is a Memory DC.
};

#endif

源文件↓

#if _MSC_VER >= 1000
#pragma once
#endif // _MSC_VER >= 1000

// CBtnST.h : header file
//

// Comment this if you don't want that CButtonST hilights itself
// also when the window is inactive (like happens in Internet Explorer)
//#define ST_LIKEIE

// Comment this if you don't want to use CMemDC class
//#define ST_USE_MEMDC

/
// CButtonST window

class CButtonST : public CButton
{
// Construction
public:
CButtonST();
~CButtonST();
enum {ST_ALIGN_HORIZ, ST_ALIGN_VERT, ST_ALIGN_HORIZ_RIGHT};

// Attributes
public:

// Operations
public:

// Implementation
public:
void DrawTransparent(BOOL bRepaint = FALSE);

BOOL GetDefault();

void SetTooltipText(int nId, BOOL bActivate = TRUE);
void SetTooltipText(CString* spText, BOOL bActivate = TRUE);
void ActivateTooltip(BOOL bEnable = TRUE);

BOOL SetBtnCursor(int nCursorId = -1);

void SetFlatFocus(BOOL bDrawFlatFocus, BOOL bRepaint = FALSE);
BOOL GetFlatFocus();

void SetDefaultActiveFgColor(BOOL bRepaint = FALSE);
void SetActiveFgColor(COLORREF crNew, BOOL bRepaint = FALSE);
const COLORREF GetActiveFgColor();

void SetDefaultActiveBgColor(BOOL bRepaint = FALSE);
void SetActiveBgColor(COLORREF crNew, BOOL bRepaint = FALSE);
const COLORREF GetActiveBgColor();

void SetDefaultInactiveFgColor(BOOL bRepaint = FALSE);
void SetInactiveFgColor(COLORREF crNew, BOOL bRepaint = FALSE);
const COLORREF GetInactiveFgColor();

void SetDefaultInactiveBgColor(BOOL bRepaint = FALSE);
void SetInactiveBgColor(COLORREF crNew, BOOL bRepaint = FALSE);
const COLORREF GetInactiveBgColor();

void SetShowText(BOOL bShow = TRUE);
BOOL GetShowText();

void SetAlign(int nAlign);
int GetAlign();

void SetFlat(BOOL bState = TRUE);
BOOL GetFlat();

void DrawBorder(BOOL bEnable = TRUE);
void SetIcon(int nIconInId, int nIconOutId = NULL);
void SetIcon(HICON hIconIn, HICON hIconOut = NULL);

static const short GetVersionI();
static const char* GetVersionC();

afx_msg HBRUSH CtlColor(CDC* pDC, UINT nCtlColor);

DECLARE_MESSAGE_MAP()
private:
void DrawTheIcon(CDC* pDC, CString* title, RECT* rcItem, CRect* captionRect, BOOL IsPressed, BOOL IsDisabled);
void InitToolTip();
void PaintBk(CDC* pDC);

int m_nAlign;
BOOL m_bShowText;
BOOL m_bDrawBorder;
BOOL m_bIsFlat;
BOOL m_MouseOnButton;
BOOL m_bDrawFlatFocus;

HCURSOR m_hCursor;
CToolTipCtrl m_ToolTip;

HICON m_hIconIn;
HICON m_hIconOut;
BYTE m_cyIcon;
BYTE m_cxIcon;

CDC m_dcBk;
CBitmap m_bmpBk;
CBitmap* m_pbmpOldBk;
BOOL m_bDrawTransparent;

BOOL m_bIsDefault;

COLORREF m_crInactiveBg;
COLORREF m_crInactiveFg;
COLORREF m_crActiveBg;
COLORREF m_crActiveFg;
};

class CMemDC : public CDC
{
public:

// constructor sets up the memory DC
CMemDC(CDC* pDC) : CDC()
{
ASSERT(pDC != NULL);

// Allow usage as a pointer
CMemDC* operator->() {return this;}

// Allow usage as a pointer
operator CMemDC*() {return this;}

#endif

//{{AFX_INSERT_LOCATION}}
// Microsoft Developer Studio will insert additional declarations immediately before the previous line.

#endif

//{{AFX_INSERT_LOCATION}}
// Microsoft Developer Studio will insert additional declarations immediately before the previous line.

#endif

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