Windows界面编程第八篇 listbox彩色显示隔行变色

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

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前面已经有七篇文章介绍了Windows界面编程,目录如下:

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)

 

       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 struct tagDRAWITEMSTRUCT {

    UINTCtlType;

    UINTCtlID;

    UINTitemID;

    UINTitemAction;

    UINTitemState;

    HWNDhwndItem;

    HDChDC;

    RECT rcItem;

    ULONG_PTR itemData;

} 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;
}

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

欢迎关注微博:http://weibo.com/MoreWindows

 

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