Windows界面编程第八篇 listbox彩色显示隔行变色

在CSDN论坛上看到很多询问如何设置listbox的颜色，如何让listbox隔行变色等等。因此专门写了一篇《Windows界面编程第八篇 listbox彩色显示隔行变色》来为大家解惑。

       首先看看下图（如果看不到，可以通过地址http://blog.csdn.net/morewindows/article/details/8656061访问）。

要设置listbox的颜色及让listbox隔行变色主要是通过处理WM_DRAWITEM消息，这个消息在MSDN的解释如下：

The WM_DRAWITEM message is sent to the parent window of an owner-drawn button, combo box, list box, or menu when a visual aspect of the button, combo box, list box, or menu has changed.

通过这个消息最主要可以得到一个DRAWITEMSTRUCT类型的结构体。这个结构体的原型如下：

//By MoreWindows-(http://blog.csdn.net/MoreWindows)

typedef structtagDRAWITEMSTRUCT {

   UINTCtlType;

   UINTCtlID;

   UINTitemID;

   UINTitemAction;

   UINTitemState;

   HWNDhwndItem;

   HDChDC;

   RECT rcItem;

   ULONG_PTRitemData;

}DRAWITEMSTRUCT;

这个结构体比较复杂，功能也很强大。全部记住它的功能是不必要的。因此直接查看下如何设置listbox的颜色，如何让listbox隔行变色这两个功能是如何完成的即可。完整代码+注释如下（可以直接到http://download.csdn.net/detail/morewindows/5128660（免积分）下载）。

//Windows界面编程第八篇 listbox彩色显示隔行变色
//http://blog.csdn.net/morewindows/article/details/8656061
//By MoreWindows-(http://blog.csdn.net/MoreWindows)
#include "stdafx.h"
#include "resource.h"

BOOL CALLBACK DlgProc(HWND hDlg,UINT message,
WPARAM wParam,LPARAM lParam);
//使窗口居中
void CenterWindow(HWND hwnd);

int APIENTRY WinMain(HINSTANCE hInstance,
                     
HINSTANCE hPrevInstance,
                    LPSTR     lpCmdLine,
                     
int       nCmdShow)
{
    // TODO: Place code here.
    DialogBox(hInstance, MAKEINTRESOURCE(IDD_DIALOG1), NULL, DlgProc);
    return 0;
}

constint MAX_NUMBER = 8;
constint MAX_STRING_LEN = 50;
constchar STR_TEXT[MAX_NUMBER][MAX_STRING_LEN] = {
    "MoreWindows",
    
"Master",
    "blog.csdn.net/MoreWindows",
    
"weibo.com/MoreWindows",
    "Windows界面编程",
    
"秒杀多线程面试题系列",
    "Windows界面编程第八篇",
    
"listbox彩色显示隔行变色"
};
BOOL CALLBACK DlgProc(HWND hDlg,UINT message,
WPARAM wParam,LPARAM lParam)
{
    
static HWND s_hLBColorListBox;
    switch (message)
    {
    case WM_INITDIALOG:
        {
            CenterWindow(hDlg);
            s_hLBColorListBox = GetDlgItem(hDlg, IDC_LB_COLORLISTBOX);
            
//添加数据
            
for (int i = 0; i < MAX_NUMBER; i++)
                SendMessage(s_hLBColorListBox, LB_ADDSTRING, 0, (LPARAM)STR_TEXT[i]);
        }
        
return FALSE;


    
case WM_COMMAND:
        
switch (LOWORD(wParam))
        {
        
case IDOK:
        
case IDCANCEL:
            EndDialog(hDlg, FALSE);
            
return TRUE;

        
case IDC_LB_COLORLISTBOX:  //listbox control ID
            
switch (HIWORD(wParam))
            {
            
case LBN_DBLCLK:   //双击事件
                {
                    
char szBuffer[MAX_STRING_LEN];
                   int nCurSel = SendMessage(s_hLBColorListBox, LB_GETCURSEL, 0, 0);
                    SendMessage(s_hLBColorListBox, LB_GETTEXT, (WPARAM)nCurSel, (LPARAM)szBuffer);
                    MessageBox(NULL, szBuffer,"listbox item", MB_OK);
                }
                
return TRUE;
            }
            
break;
        }
        
break;


    case WM_DRAWITEM:
        {
            LPDRAWITEMSTRUCT lpDrawItem = (LPDRAWITEMSTRUCT)lParam;
            
if (lpDrawItem->CtlType == ODT_LISTBOX || lpDrawItem->CtlID == IDC_LB_COLORLISTBOX)
            {
                
if (lpDrawItem->itemID == -1)
                    
break;

                
char szItemString[MAX_STRING_LEN];
                
int nItemStringLen;
                SendMessage(s_hLBColorListBox, LB_GETTEXT, (WPARAM)lpDrawItem->itemID, (LPARAM)szItemString);
                nItemStringLen = strlen(szItemString);

                
// 设置选中一行时，这一行加边框，反色
                
if ((lpDrawItem->itemState & ODS_SELECTED) &&
                    (lpDrawItem->itemAction & (ODA_SELECT | ODA_DRAWENTIRE)))
                {
                    DrawFocusRect(lpDrawItem->hDC, &lpDrawItem->rcItem);
                    InvertRect(lpDrawItem->hDC, &lpDrawItem->rcItem);
                }
                
else if (!(lpDrawItem->itemState & ODS_SELECTED) &&
                    (lpDrawItem->itemAction & ODA_SELECT))
                {
                    DrawFocusRect(lpDrawItem->hDC, &lpDrawItem->rcItem);
                    InvertRect(lpDrawItem->hDC, &lpDrawItem->rcItem);
                }

                
// 隔行变色
                
if (lpDrawItem->itemID % 2 == 0)
                    SetTextColor(lpDrawItem->hDC, RGB(25, 125, 0));
                
else
                    SetTextColor(lpDrawItem->hDC, RGB(0, 25, 125));

                
// 文字背景色
                
if (lpDrawItem->itemState & ODS_SELECTED)
                {
                    SetBkMode(lpDrawItem->hDC, TRANSPARENT);
                    SetTextColor(lpDrawItem->hDC, RGB(255, 255, 255));
                }
                
else
                {
                    SetBkMode(lpDrawItem->hDC, OPAQUE);
                    SetBkColor(lpDrawItem->hDC, GetSysColor(COLOR_WINDOW));
                }

                
//输出文字
                DrawText(lpDrawItem->hDC, szItemString, nItemStringLen, &lpDrawItem->rcItem, DT_LEFT | DT_SINGLELINE);
                
return TRUE;
            }
        }
        
break;
    }
    return FALSE;
}

void CenterWindow(HWND hwnd)
{
    RECT   rcDlg;
    int    nDlgWidth, nDlgHight;
    
int    nScreenWidth, nScreenHight;

    nScreenWidth = GetSystemMetrics(SM_CXSCREEN);
    nScreenHight = GetSystemMetrics(SM_CYSCREEN);

    GetWindowRect(hwnd, &rcDlg);
    nDlgWidth = rcDlg.right - rcDlg.left;
    nDlgHight = rcDlg.bottom - rcDlg.top;

    MoveWindow(hwnd, (nScreenWidth  - nDlgWidth) / 2, (nScreenHight - nDlgHight) / 2, nDlgWidth, nDlgHight, FALSE);
}

//Windows界面编程第八篇 listbox彩色显示隔行变色
//http://blog.csdn.net/morewindows/article/details/8656061
//By MoreWindows-(http://blog.csdn.net/MoreWindows) 
#include "stdafx.h"
#include "resource.h"

BOOL CALLBACK DlgProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam);
//使窗口居中
void CenterWindow(HWND hwnd);

int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{
 	// TODO: Place code here.
	DialogBox(hInstance, MAKEINTRESOURCE(IDD_DIALOG1), NULL, DlgProc);
	return 0;
}

const int MAX_NUMBER = 8;
const int MAX_STRING_LEN = 50;
const char STR_TEXT[MAX_NUMBER][MAX_STRING_LEN] = {
	"MoreWindows", 
	"Master",
	"blog.csdn.net/MoreWindows", 
	"weibo.com/MoreWindows",
	"Windows界面编程",
	"秒杀多线程面试题系列",
	"Windows界面编程第八篇",
	"listbox彩色显示隔行变色"
};
BOOL CALLBACK DlgProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
	static HWND s_hLBColorListBox;
	switch (message)
	{
	case WM_INITDIALOG:
		{
			CenterWindow(hDlg);
			s_hLBColorListBox = GetDlgItem(hDlg, IDC_LB_COLORLISTBOX);
			//添加数据
			for (int i = 0; i < MAX_NUMBER; i++)
				SendMessage(s_hLBColorListBox, LB_ADDSTRING, 0, (LPARAM)STR_TEXT[i]);
		}
		return FALSE;
		
		
	case WM_COMMAND:
		switch (LOWORD(wParam))
		{
		case IDOK:
		case IDCANCEL:
			EndDialog(hDlg, FALSE);
			return TRUE;

		case IDC_LB_COLORLISTBOX:  //listbox control ID
			switch (HIWORD(wParam))
			{
			case LBN_DBLCLK:   //双击事件
				{	
					char szBuffer[MAX_STRING_LEN];
					int nCurSel = SendMessage(s_hLBColorListBox, LB_GETCURSEL, 0, 0);
					SendMessage(s_hLBColorListBox, LB_GETTEXT, (WPARAM)nCurSel, (LPARAM)szBuffer);
					MessageBox(NULL, szBuffer, "listbox item", MB_OK);
				}
				return TRUE;
			}
			break;
		}
		break;


	case WM_DRAWITEM:
		{
			LPDRAWITEMSTRUCT lpDrawItem = (LPDRAWITEMSTRUCT)lParam;
			if (lpDrawItem->CtlType == ODT_LISTBOX || lpDrawItem->CtlID == IDC_LB_COLORLISTBOX)
			{
				if (lpDrawItem->itemID == -1)
					break;
				
				char szItemString[MAX_STRING_LEN];
				int nItemStringLen;
				SendMessage(s_hLBColorListBox, LB_GETTEXT, (WPARAM)lpDrawItem->itemID, (LPARAM)szItemString);
				nItemStringLen = strlen(szItemString);

				// 设置选中一行时，这一行加边框，反色
				if ((lpDrawItem->itemState & ODS_SELECTED) &&   
					(lpDrawItem->itemAction & (ODA_SELECT | ODA_DRAWENTIRE)))
				{
					DrawFocusRect(lpDrawItem->hDC, &lpDrawItem->rcItem); 
					InvertRect(lpDrawItem->hDC, &lpDrawItem->rcItem);
				}
				else if (!(lpDrawItem->itemState & ODS_SELECTED) && 
					(lpDrawItem->itemAction & ODA_SELECT))
				{
					DrawFocusRect(lpDrawItem->hDC, &lpDrawItem->rcItem);
					InvertRect(lpDrawItem->hDC, &lpDrawItem->rcItem);
				}
				
				// 隔行变色
				if (lpDrawItem->itemID % 2 == 0)
					SetTextColor(lpDrawItem->hDC, RGB(25, 125, 0));
				else
					SetTextColor(lpDrawItem->hDC, RGB(0, 25, 125));
				
				// 文字背景色
				if (lpDrawItem->itemState & ODS_SELECTED)
				{
					SetBkMode(lpDrawItem->hDC, TRANSPARENT);
					SetTextColor(lpDrawItem->hDC, RGB(255, 255, 255));
				}
				else 
				{
					SetBkMode(lpDrawItem->hDC, OPAQUE);
					SetBkColor(lpDrawItem->hDC, GetSysColor(COLOR_WINDOW));
				}
				
				//输出文字
				DrawText(lpDrawItem->hDC, szItemString, nItemStringLen, &lpDrawItem->rcItem, DT_LEFT | DT_SINGLELINE);
				return TRUE;
			}	
		}
		break;
	}
	return FALSE;
}

void CenterWindow(HWND hwnd)
{
	RECT   rcDlg;
	int    nDlgWidth, nDlgHight;
	int    nScreenWidth, nScreenHight;
	
	nScreenWidth = GetSystemMetrics(SM_CXSCREEN);
	nScreenHight = GetSystemMetrics(SM_CYSCREEN);
	
	GetWindowRect(hwnd, &rcDlg);
	nDlgWidth = rcDlg.right - rcDlg.left;
	nDlgHight = rcDlg.bottom - rcDlg.top;
	
	MoveWindow(hwnd, (nScreenWidth  - nDlgWidth) / 2, (nScreenHight - nDlgHight) / 2, nDlgWidth, nDlgHight, FALSE);
}

下面列出全部目录，方便大家浏览：

1. 《Windows界面编程第一篇位图背景与位图画刷》

2. 《Windows界面编程第二篇半透明窗体》

3. 《Windows界面编程第三篇异形窗体普通版》

4. 《Windows界面编程第四篇异形窗体高富帅版》

5. 《Windows界面编程第五篇静态控件背景透明化》

6．《Windows界面编程第六篇 动画启动效果（动画效果显示及隐藏窗口）》

7．《Windows界面编程第七篇 文件拖拽(文件拖放)》

8．《Windows界面编程第八篇 listbox彩色显示隔行变色》

本文配套程序下载地址为：http://download.csdn.net/detail/morewindows/5128660

转载请标明出处，原文地址：http://blog.csdn.net/morewindows/article/details/8656061

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