为什么我的OnDraw( ATL_DRAWINFO& di )输出不了字符

cych-111

为什么我的OnDraw( ATL_DRAWINFO& di )输出不了字符 [复制链接]

RECT& rc = *(RECT*)di.prcBounds;
	Rectangle(di.hdcDraw, rc.left, rc.top, rc.right, rc.bottom);
	RETAILMSG( CC_CAMERA_MSGFLAG, (TEXT("[Camera CC]  ONDRAW :rc prcBounds %d, %d, %d, %d !!!! \n" ), rc.left, rc.top, rc.right, rc.bottom));
	DrawText(di.hdcDraw, _T("TEST \n OUPT \n STRING \n DATA \n sssss\nssssss\nsssssss\nsssssss\nsssssss\nsssss\n"), 100, &rc, DT_LEFT);	
	

    DrawText(di.hdcDraw, _T("0123456789abcdefghijklmnopqrstuvwxyz!"), -1, &rc, DT_TOP | DT_LEFT | DT_WORDBREAK);
以上这些代码没有输出， DrawText返回值为0，改成TextOut

        SetTextAlign(di.hdcDraw, TA_CENTER|TA_BASELINE);
        LPCTSTR pszText = _T("ATL 8.0 : TestCtrl");
		#ifndef _WIN32_WCE
				TextOut(di.hdcDraw,
					(rc.left + rc.right) / 2,
					(rc.top + rc.bottom) / 2,
					pszText,
					lstrlen(pszText));
		#else
				ExtTextOut(di.hdcDraw,
					(rc.left + rc.right) / 2,
					(rc.top + rc.bottom) / 2,
					ETO_OPAQUE,
					NULL,
					pszText,
					lstrlen(pszText),
					NULL);
		#endif

还是没有输出，求高手解答......