void CPictureView::SetScrollSizes()
{
//得到客户区的大小
CRect rcClient;
GetClientRect(&rcClient);
CSize szPage = rcClient.Size();
//得到图片显示的大小
CSize szTotal(m_PictDisplaySize);
CSize szLine = szPage;
szLine.cx /= 10;
szLine.cy /= 10;
CScrollView::SetScrollSizes(MM_TEXT, szTotal, szPage, szLine);
Invalidate();
}
//绘制按钮，只有菜单按钮才需要该函数
//图标按钮不是自画方式，使用系统函数进行绘制
void CIconBut::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{
// TODO: Add your message handler code here and/or call default
//CButton::OnDrawItem(nIDCtl, lpDrawItemStruct);
if( ( GetStyle( ) & BS_OWNERDRAW ) == BS_OWNERDRAW )
{ //该控件为自画方式
//if(m_bStayDown&&m_bLockDown) return;
CRect rect(lpDrawItemStruct->rcItem);
CDC* pDC=CDC::FromHandle(lpDrawItemStruct->hDC);
UINT state=lpDrawItemStruct->itemState;
UINT action=lpDrawItemStruct->itemAction;
//得到系统的按钮各部分颜色
HBRUSH hbrText=GetSysColorBrush(COLOR_BTNTEXT);
HBRUSH hbrFace=GetSysColorBrush(COLOR_3DFACE);
HBRUSH hOldBrush=(HBRUSH)SelectObject(pDC->m_hDC,hbrFace);
//绘制边界
CRect edgeRect(rect);
pDC->Rectangle(rect);
if(state&ODS_FOCUS)
edgeRect.InflateRect(-1,-1);
//绘制按钮体
/*if((state&ODS_SELECTED)&&(action&ODA_SELECT)&&(state&ODS_FOCUS))
{ //按钮被选中
CPen pen(PS_SOLID,1,GetSysColor(COLOR_3DSHADOW));
CPen* pOldPen=pDC->SelectObject(&pen);
pDC->Rectangle(edgeRect);
pDC->SelectObject(pOldPen);
}
else*/
pDC->DrawEdge(edgeRect,EDGE_RAISED,BF_RECT|BF_SOFT);
//m_bStayDown=FALSE; }
//绘制按钮文字标题
CSize szTri=pDC->GetOutputTextExtent(_T("M"),1);
CString text;
GetWindowText(text);
CSize szText=pDC->GetOutputTextExtent(text,text.GetLength());
CSize szTotal(szText);
szTotal.cx+=szTri.cx;
CRect textRect=rect;
textRect.InflateRect(-((rect.Width()-szTotal.cx)/2),
-((rect.Height()-szTotal.cy)/2));
textRect.top--;
CRect triRect=textRect;
triRect.left=textRect.right-szTri.cx;
triRect.InflateRect(0,-((textRect.Height()-szTri.cy)/2));
pDC->SetBkMode(TRANSPARENT);
if(state&ODS_SELECTED)
textRect.OffsetRect(1,1);
pDC->DrawText(text,textRect,DT_SINGLELINE|DT_LEFT);
SelectObject(pDC->m_hDC,hbrText);
CPoint ptTri(textRect.left+szText.cx,textRect.top+3);
DrawTriangle(pDC,ptTri,10);
if(state&ODS_FOCUS)
{
CRect fRect(rect);
fRect.InflateRect(-4,-4);
pDC->DrawFocusRect(fRect);
}
SelectObject(pDC->m_hDC,hOldBrush);
if((action&ODA_SELECT)&&
(state&ODS_FOCUS)&&(state&ODS_SELECTED))
DisplayMenu();
}
}
