MFC 菜单背景色设置（菜单重绘）

先上效果图：


源码下载（来自CSDN，感谢原作者）：QTOOLS.rar

简单解析下：
最终是通过OnDrawItem()函数重新绘制菜单项，填充背景颜色。

MyMenu类中绘制代码：

//.h
virtual void DrawItem( LPDRAWITEMSTRUCT lpStruct );       //重绘菜单项
...
//.cpp
void CIconMenu::DrawItem( LPDRAWITEMSTRUCT lpStruct )
{
	if (lpStruct->CtlType==ODT_MENU)
	{
		if(lpStruct->itemData == NULL)	return;
		unsigned int m_state = lpStruct->itemState;
		CDC* m_dc = CDC::FromHandle(lpStruct->hDC);
		//m_dc.Attach(lpStruct->hDC);

		CString str =  ((CMenuItemInfo*)(lpStruct->itemData))->m_ItemText;
		LPSTR m_str = str.GetBuffer(str.GetLength());

		int m_itemID = ((CMenuItemInfo*)(lpStruct->itemData))->m_ItemID;
		int m_itemicon = ((CMenuItemInfo*)(lpStruct->itemData))->m_IconIndex;
		CRect m_rect = lpStruct->rcItem;

		m_dc->SetBkMode(TRANSPARENT);

		switch(m_itemID)
		{
		case -2:
			{

				DrawTopMenu(m_dc,m_rect,m_str,(m_state&ODS_SELECTED)||(m_state&0x0040)); //0x0040 ==ODS_HOTLIGHT

//				DrawItemText(m_dc,m_str,m_rect);
				break;
			}
		case -1:
			{	
				DrawItemText(m_dc,m_str,m_rect);
				break;
			}
		case 0:
			{
				DrawSeparater(m_dc,m_rect);
				break;
			}
		default:
			{		
				DrawComMenu(m_dc,m_rect,RGB(200, 160, 80),RGB(100,140,80),m_state&ODS_SELECTED);
				DrawItemText(m_dc,m_str,m_rect);
				DrawMenuIcon(m_dc,m_rect,m_itemicon);
				break;
			}
		}
	}
}

MainFrm中调用MyMenu的方法：

//.h
CIconMenu     mMenu;
...
//.cpp
BEGIN_MESSAGE_MAP(CMainFrm, CFrameWnd)
	//{{AFX_MSG_MAP(CMainFrm)
	ON_WM_CREATE()
	ON_WM_DRAWITEM()
	ON_WM_MEASUREITEM()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()
...

int CMainFrm::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
	UINT style=0;
	if (CFrameWnd::OnCreate(lpCreateStruct) == -1)
		return -1;
	
	mMenu.AttatchMenu(LoadMenu(NULL,MAKEINTRESOURCE(IDR_MAINFRAME)));
	mMenu.ChangeMenuItem(&mMenu,TRUE);
	SetMenu(&mMenu);
    ...
}

void CMainFrm::OnDrawItem(int nIDCtl, LPDRAWITEMSTRUCT lpDrawItemStruct) 
{
	mMenu.DrawItem(lpDrawItemStruct);	
}

void CMainFrm::OnMeasureItem(int nIDCtl, LPMEASUREITEMSTRUCT lpMeasureItemStruct) 
{
	mMenu.MeasureItem(lpMeasureItemStruct);	
}

这样就OK了，更详细的请自行研究源码。