动态创建自绘的CListBox注意事项

Create(WS_VISIBLE|WS_CHILD|LBS_NOTIFY|LBS_OWNERDRAWFIXED|LBS_HASSTRINGS|LBS_NOINTEGRALHEIGHT ,rcWnd,this,xxx);

如果想要响应ON_LBN_SELCHANGE消息，则一定要加LBS_NOTIFY；

如果想要自绘风格则加LBS_OWNERDRAWFIXED；

如果碰到DrawItem的时候，GetText获取不到正常的字符串的时候，则要加LBS_HASSTRINGS；

如果碰到改变列表框大小的时候，列表框高度不对劲，则要加LBS_NOINTEGRALHEIGHT；

顺便贴出自绘代码段：

void CMyListBox::DrawItem(LPDRAWITEMSTRUCT lpDIS)
{
if ((int)lpDIS->itemID < 0)
return; TCHAR ch[64] = {0};
GetText(lpDIS->itemID, ch);CDC* pDC = CDC::FromHandle(lpDIS->hDC);
CRectrFrame= lpDIS->rcItem;
rFrame.DeflateRect(1,1,1,1);// If item has been selected, draw the highlight rectangle using the item's color.
CBrush brush(RGB(255,255,255));
pDC->FillRect(&rFrame, &brush);if ((lpDIS->itemState & ODS_SELECTED))
{
CBrush brush(RGB(51,153,255));
pDC->FillRect(&rFrame, &brush);
pDC->SetTextColor(RGB(20,0,0));
}int nBkMode = pDC->SetBkMode(TRANSPARENT);
UINT nFormat = DT_LEFT | DT_SINGLELINE | DT_VCENTER;
if (GetStyle() & LBS_USETABSTOPS)
nFormat |= DT_EXPANDTABS;
CFont font;
font.CreatePointFont(120, _T("宋体"));
pDC->SelectObject(&font);
// Calculate the rectangle size before drawing the text.
pDC->DrawText(ch,-1, &rFrame, nFormat);
pDC->SetBkMode(nBkMode);DeleteObject(&font);
}