colorlistbox.cpp

使用vc++技术实现光电机串口通信管理程序

// ColorListBox.cpp : implementation file
//

#include "stdafx.h"

#include "ColorListBox.h"



/////////////////////////////////////////////////////////////////////////////
// CColorListBox

#include "ColorListBox.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CColorListBox

CColorListBox::CColorListBox()
{
}

CColorListBox::~CColorListBox()
{
}


BEGIN_MESSAGE_MAP(CColorListBox, CListBox)
    //{{AFX_MSG_MAP(CColorListBox)
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CColorListBox message handlers



void CColorListBox::DrawItem(LPDRAWITEMSTRUCT lpdis) 
{
    if (lpdis->itemID < 0)
        return; 

    COLORREF cvText;
    COLORREF cvBack;
    CString itemString;

    if ((lpdis->itemState & ODS_SELECTED) &&    // if item has been selected
        (lpdis->itemAction & (ODA_SELECT | ODA_DRAWENTIRE)))
            DrawFocusRect(lpdis->hDC, &lpdis->rcItem); 
    

    if (!(lpdis->itemState & ODS_SELECTED) &&    // if item has been deselected
        (lpdis->itemAction & ODA_SELECT))
            DrawFocusRect(lpdis->hDC, &lpdis->rcItem); 
    

    if(lpdis->itemData)        // if color information is present
            cvText = SetTextColor(lpdis->hDC, lpdis->itemData);
        else     // if no color information, use default system colors
            cvText = SetTextColor(lpdis->hDC, GetSysColor((lpdis->itemState & ODS_SELECTED)
        ? COLOR_HIGHLIGHTTEXT : COLOR_WINDOWTEXT)); 
    
    // always use system colors for background
    cvBack = SetBkColor(lpdis->hDC, GetSysColor((lpdis->itemState & ODS_SELECTED)
        ? COLOR_HIGHLIGHT : COLOR_WINDOW)); 

    // get and display item text
    GetText(lpdis->itemID, itemString );
    DrawText(lpdis->hDC, itemString, -1, &lpdis->rcItem, DT_LEFT | DT_SINGLELINE);

    // restore DC colors
    SetTextColor(lpdis->hDC, cvText); 
    SetBkColor(lpdis->hDC, cvBack); 
}


//***********************************************
// original AddString() method
//
// purpose: Add a string to the listbox
//
// parameters: 
//        lpszItem: pointer to item text
//
// remarks:
//        provided because CListBox::AddString is 
//        NOT virtual
//
// return:    item index
//***********************************************
int CColorListBox::AddString( LPCTSTR lpszItem)
{
    return ((CListBox*)this)->AddString(lpszItem);
}


//***********************************************
// new AddString() method
//
// purpose: Add a string to the listbox
//
// parameters: 
//        lpszItem: pointer to item text
//             rgb: text color as a COLORREF
//
// return:    item index
//***********************************************
int CColorListBox::AddString( LPCTSTR lpszItem,COLORREF rgb )
{
    int item = AddString(lpszItem);
    if(item >=0)
        SetItemData(item,rgb);
    return item;
}


//***********************************************
// new InsertString() method
//
// purpose: Insert a string to the listbox
//
// parameters: 
//          nIndex: index of inserted item
//        lpszItem: pointer to item text
//             rgb: text color as a COLORREF
//
// return:    item index
//***********************************************
int CColorListBox::InsertString( int nIndex, LPCTSTR lpszItem, COLORREF rgb)
{
    int item = ((CListBox*)this)->InsertString(nIndex,lpszItem);
    if(item >=0)
        SetItemData(item,rgb);
    return item;

}