关于VS2010中使用CColorListBox 实现文本改变颜色

过程：

1）使用别人已经写好的类，CColorListBox 完成。其实过程很简单，只是在vs2010 中需要注意一些细节：

首先，在新建的项目中加入这两个类；

然后， 在vs对话框中添加CListBox m_list变量，然后将CListBox改为CColorListBox，这样就可以在点击BUTTON响应事件中，添加代码

m_list.AddString(_T("nihao"),RGB(255,0,0));

只是这样，结果并不会想想象的出现文本颜色的变化。

需要做的是：修改m_list的属性：

*）Owner Draw 为Variable

*）Selction 为Single

*）use TabStops 为False

*）Has Strings 为True 这个是我在运行是，一直没有找到的出问题的地方

开始的时候设置的为False 但是怎么都不行，就单步调试，跟进去看代码，存入的是这个值，怎么都不行，再看它的重绘，取出的值就是不对，就像可能是list的属性设置不正确，由于属性不正确，它不去取你设置的值，所以就看vc6.0的代码，选中了又字符串，默认的是False 所以要选中！！！！

/*****************************************************************

CColorListBox.h

#if !defined(AFX_COLORLISTBOX_H__5529A6B1_584A_11D2_A41A_006097BD277B__INCLUDED_)

#define AFX_COLORLISTBOX_H__5529A6B1_584A_11D2_A41A_006097BD277B__INCLUDED_

#if _MSC_VER >= 1000

#pragma once

#endif // _MSC_VER >= 1000

// ColorListBox.h : header file

//-------------------------------------------------------------------

//

// CColorListBox class -

// A CListBox-derived class with optional colored items.

//

// Version: 1.0
01/10/1998 Copyright ?Patrice Godard

//

// Version: 2.0
09/17/1999 Copyright ?Paul M. Meidinger

//

//-------------------------------------------------------------------

/////////////////////////////////////////////////////////////////////////////

// CColorListBox window

class CColorListBox : public CListBox

{

// Construction

public:

CColorListBox();

// Attributes

public:

// Operations

public:

int AddString(LPCTSTR lpszItem);
// Adds a string to the list box

int AddString(LPCTSTR lpszItem, COLORREF rgb);
// Adds a colored string to the list box

int InsertString(int nIndex, LPCTSTR lpszItem);
// Inserts a string to the list box

int InsertString(int nIndex, LPCTSTR lpszItem, COLORREF rgb);
// Inserts a colored string to the list box

void SetItemColor(int nIndex, COLORREF rgb);
// Sets the color of an item in the list box

// Overrides

// ClassWizard generated virtual function overrides

//{{AFX_VIRTUAL(CColorListBox)

public:

virtual void DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct);

virtual void MeasureItem(LPMEASUREITEMSTRUCT lpMeasureItemStruct);

//}}AFX_VIRTUAL

// Implementation

public:

virtual ~CColorListBox();

// Generated message map functions

protected:

//{{AFX_MSG(CColorListBox)

//}}AFX_MSG

DECLARE_MESSAGE_MAP()

};

/////////////////////////////////////////////////////////////////////////////

//{{AFX_INSERT_LOCATION}}

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

#endif // !defined(AFX_COLORLISTBOX_H__5529A6B1_584A_11D2_A41A_006097BD277B__INCLUDED_)

/***************************************************************************************************************************************

CColorListBox.cpp

// ColorListBox.cpp : implementation file

//-------------------------------------------------------------------

//

// CColorListBox class -

// A CListBox-derived class with optional colored items.

//

// Version: 1.0
01/10/1998 Copyright ?Patrice Godard

//

// Version: 2.0
09/17/1999 Copyright ?Paul M. Meidinger

//

//-------------------------------------------------------------------

#include "stdafx.h"

#include "ColorListBox.h"

#ifdef _DEBUG

#define new DEBUG_NEW

#undef THIS_FILE

static char THIS_FILE[] = __FILE__;

#endif

/////////////////////////////////////////////////////////////////////////////

// CColorListBox

//-------------------------------------------------------------------

//

CColorListBox::CColorListBox()

//

// Return Value: None.

//

// Parameters :
None.

//

// Remarks :
Standard constructor.

//

{

} // CColorListBox

//-------------------------------------------------------------------

//

CColorListBox::~CColorListBox()

//

// Return Value: None.

//

// Parameters :
None.

//

// Remarks :
Destructor.

//

{

} // ~CColorListBox()

BEGIN_MESSAGE_MAP(CColorListBox, CListBox)

//{{AFX_MSG_MAP(CColorListBox)

//}}AFX_MSG_MAP

END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////

// CColorListBox message handlers

//-------------------------------------------------------------------

//

void CColorListBox::DrawItem(LPDRAWITEMSTRUCT lpDIS)

//

// Return Value: None.

//

// Parameters :
lpDIS - A long pointer to a DRAWITEMSTRUCT structure

// that contains information about the type of drawing required.

//

// Remarks :
Called by the framework when a visual aspect of

// an owner-draw list box changes.

//

{

if ((int)lpDIS->itemID < 0)

return;

CDC* pDC = CDC::FromHandle(lpDIS->hDC);

COLORREF crText;

CString sText;

COLORREF crNorm = (COLORREF)lpDIS->itemData;
// Color information is in item data.

COLORREF crHilite = RGB(255-GetRValue(crNorm), 255-GetGValue(crNorm), 255-GetBValue(crNorm));

// If item has been selected, draw the highlight rectangle using the item's color.

if ((lpDIS->itemState & ODS_SELECTED) &&

(lpDIS->itemAction & (ODA_SELECT | ODA_DRAWENTIRE)))

{

CBrush brush(crNorm);

pDC->FillRect(&lpDIS->rcItem, &brush);

}

// If item has been deselected, draw the rectangle using the window color.

if (!(lpDIS->itemState & ODS_SELECTED) &&
(lpDIS->itemAction & ODA_SELECT))

{

CBrush brush(::GetSysColor(COLOR_WINDOW));

pDC->FillRect(&lpDIS->rcItem, &brush);

}

// If item has focus, draw the focus rect.

if ((lpDIS->itemAction & ODA_FOCUS) && (lpDIS->itemState & ODS_FOCUS))

pDC->DrawFocusRect(&lpDIS->rcItem);

// If item does not have focus, redraw (erase) the focus rect.

if ((lpDIS->itemAction & ODA_FOCUS) &&
!(lpDIS->itemState & ODS_FOCUS))

pDC->DrawFocusRect(&lpDIS->rcItem);

// Set the background mode to TRANSPARENT to draw the text.

int nBkMode = pDC->SetBkMode(TRANSPARENT);

// If the item's color information is set, use the highlight color

// gray text color, or normal color for the text.

if (lpDIS->itemData)

{

if (lpDIS->itemState & ODS_SELECTED)

crText = pDC->SetTextColor(crHilite);

else if (lpDIS->itemState & ODS_DISABLED)

crText = pDC->SetTextColor(::GetSysColor(COLOR_GRAYTEXT));

else

crText = pDC->SetTextColor(crNorm);

}

// Else the item's color information is not set, so use the

// system colors for the text.

else

{

if (lpDIS->itemState & ODS_SELECTED)

crText = pDC->SetTextColor(::GetSysColor(COLOR_HIGHLIGHTTEXT));

else if (lpDIS->itemState & ODS_DISABLED)

crText = pDC->SetTextColor(::GetSysColor(COLOR_GRAYTEXT));

else

crText = pDC->SetTextColor(::GetSysColor(COLOR_WINDOWTEXT));

}

// Get and display item text.

GetText(lpDIS->itemID, sText);

CRect rect = lpDIS->rcItem;

// Setup the text format.

UINT nFormat = DT_LEFT | DT_SINGLELINE | DT_VCENTER;

if (GetStyle() & LBS_USETABSTOPS)

nFormat |= DT_EXPANDTABS;

// Calculate the rectangle size before drawing the text.

pDC->DrawText(sText, -1, &rect, nFormat | DT_CALCRECT);

pDC->DrawText(sText, -1, &rect, nFormat);

pDC->SetTextColor(crText);

pDC->SetBkMode(nBkMode);

} // DrawItem

//-------------------------------------------------------------------

//

void CColorListBox::MeasureItem(LPMEASUREITEMSTRUCT lpMIS)

//

// Return Value: None.

//

// Parameters :
lpMIS - A long pointer to a

// MEASUREITEMSTRUCT structure.

//

// Remarks :
Called by the framework when a list box with

// an owner-draw style is created.

//

{

// ### Is the default list box item height the same as

// the menu check height???

lpMIS->itemHeight = ::GetSystemMetrics(SM_CYMENUCHECK);

} // MeasureItem

//-------------------------------------------------------------------

//

int CColorListBox::AddString(LPCTSTR lpszItem)

//

// Return Value: The zero-based index to the string in the list box.

// The return value is LB_ERR if an error occurs; the

// return value is LB_ERRSPACE if insufficient space

// is available to store the new string.

//

// Parameters :
lpszItem - Points to the null-terminated

// string that is to be added.

//

// Remarks :
Call this member function to add a string to a list

// box. Provided because CListBox::AddString is NOT

// a virtual function.

//

{

return ((CListBox*)this)->AddString(lpszItem);

} // AddString

//-------------------------------------------------------------------

//

int CColorListBox::AddString(LPCTSTR lpszItem, COLORREF rgb)

//

// Return Value: The zero-based index to the string in the list box.

// The return value is LB_ERR if an error occurs; the

// return value is LB_ERRSPACE if insufficient space

// is available to store the new string.

//

// Parameters :
lpszItem - Points to the null-terminated

// string that is to be added.

// rgb - Specifies the color to be associated with the item.

//

// Remarks :
Call this member function to add a string to a list

// box with a custom color.

//

{

int nItem = AddString(lpszItem);

if (nItem >= 0)

SetItemData(nItem, rgb);

return nItem;

} // AddString

//-------------------------------------------------------------------

//

int CColorListBox::InsertString(int nIndex, LPCTSTR lpszItem)

//

// Return Value: The zero-based index of the position at which the

// string was inserted. The return value is LB_ERR if

// an error occurs; the return value is LB_ERRSPACE if

// insufficient space is available to store the new string.

//

// Parameters :
nIndex - Specifies the zero-based index of the position

// to insert the string. If this parameter is ?, the string

// is added to the end of the list.

// lpszItem - Points to the null-terminated string that

// is to be inserted.

//

// Remarks :
Inserts a string into the list box. Provided because

// CListBox::InsertString is NOT a virtual function.

//

{

return ((CListBox*)this)->InsertString(nIndex, lpszItem);

} // InsertString

//-------------------------------------------------------------------

//

int CColorListBox::InsertString(int nIndex, LPCTSTR lpszItem, COLORREF rgb)

//

// Return Value: The zero-based index of the position at which the

// string was inserted. The return value is LB_ERR if

// an error occurs; the return value is LB_ERRSPACE if

// insufficient space is available to store the new string.

//

// Parameters :
nIndex - Specifies the zero-based index of the position

// to insert the string. If this parameter is ?, the string

// is added to the end of the list.

// lpszItem - Points to the null-terminated string that

// is to be inserted.

// rgb - Specifies the color to be associated with the item.

//

// Remarks :
Inserts a colored string into the list box.

//

{

int nItem = ((CListBox*)this)->InsertString(nIndex,lpszItem);

if (nItem >= 0)

SetItemData(nItem, rgb);

return nItem;

} // InsertString

//-------------------------------------------------------------------

//

void CColorListBox::SetItemColor(int nIndex, COLORREF rgb)

//

// Return Value: None.

//

// Parameters :
nIndex - Specifies the zero-based index of the item.

// rgb - Specifies the color to be associated with the item.

//

// Remarks :
Sets the 32-bit value associated with the specified

// item in the list box.

//

{

SetItemData(nIndex, rgb);

RedrawWindow();

} // SetItemColor