关于重绘标题栏的问题！

Question

每次当鼠标在标题栏按下的时候，原来的最大化，最小化这些按钮就重新显示出来一会！而我在WM_NCLBUTTONDOWN和WM_NCMOUSEMOVE ,WM_NCLBUTTONDBCLICK中都重绘了标题栏！但是当我将应用程序的系统菜单打开后（也就是，还原，最大化，最小化的那个菜单），就不会出现原先的问题了！如果去掉WM_NCLBUTTONDBCLICK的默认CDialog::OnNcLButtonDown()也可以，就是对标题栏无响应了!还有就是去掉对话框的System menu属性也可以！但是任务栏中的TAB无图标！
请众位大哥指教！

Answer 1

我参照的代码
CBrush Brush(RGB(0,100,255));
CBrush* pOldBrush = pDC->SelectObject(&Brush); CRect rtWnd, rtTitle, rtButtons;
GetWindowRect(&rtWnd); 
//取得标题栏的位置
rtTitle.left = GetSystemMetrics(SM_CXFRAME);
rtTitle.top = GetSystemMetrics(SM_CYFRAME);
rtTitle.right = rtWnd.right - rtWnd.left - GetSystemMetrics(SM_CXFRAME);
rtTitle.bottom = rtTitle.top + GetSystemMetrics(SM_CYSIZE); CPoint point;
//填充顶部框架
point.x = rtWnd.Width();
point.y = GetSystemMetrics(SM_CYSIZE) + GetSystemMetrics(SM_CYFRAME)+1;
pDC->PatBlt(0, 0, point.x, point.y, PATCOPY);
/* //填充左侧框架
point.x = GetSystemMetrics(SM_CXFRAME);
point.y = rtWnd.Height();
pDC->PatBlt(0, 0, point.x, point.y, PATCOPY);
//填充底部框架
point.x = rtWnd.Width(); 
point.y = GetSystemMetrics(SM_CYFRAME);
pDC->PatBlt(0, rtWnd.Height()-point.y, point.x, point.y, PATCOPY);
//填充右侧框架
point.x = GetSystemMetrics(SM_CXFRAME);
point.y = rtWnd.Height();
pDC->PatBlt(rtWnd.Width()-point.x, 0, point.x, point.y, PATCOPY);
//填充菜单下部框架
point.x = rtWnd.Width();
point.y = GetSystemMetrics(SM_CYFRAME)-1;
pDC->PatBlt(0, GetSystemMetrics(SM_CYMENU)+GetSystemMetrics(SM_CYSIZE)+point.y, point.x, point.y, PATCOPY);
//填充菜单右侧框架
point.x = rtWnd.Width() - 230;
point.y = GetSystemMetrics(SM_CYMENU);
pDC->PatBlt(230, GetSystemMetrics(SM_CYSIZE)+GetSystemMetrics(SM_CYFRAME), point.x, point.y, PATCOPY); //绘制美化线条
CBrush BrushLine(RGB(255, 255, 255));
pDC->SelectObject(&BrushLine);
point.x = rtWnd.Width() - 150;
point.y = GetSystemMetrics(SM_CYFRAME) + 2;
pDC->PatBlt(GetSystemMetrics(SM_CXFRAME), point.y, point.x, 1, PATCOPY);
point.y += 5;
pDC->PatBlt(GetSystemMetrics(SM_CXFRAME), point.y, point.x, 1, PATCOPY);
point.y += 5;
pDC->PatBlt(GetSystemMetrics(SM_CXFRAME), point.y, point.x, 1, PATCOPY);
point.x += 60;
point.y += 12;
pDC->PatBlt(point.x, point.y, 85, 1, PATCOPY);
point.y += 5;
pDC->PatBlt(point.x, point.y, 85, 1, PATCOPY);
point.x -= 60 - GetSystemMetrics(SM_CXFRAME);
point.y += 5;
pDC->PatBlt(point.x, point.y, 145-GetSystemMetrics(SM_CXFRAME) , 1, PATCOPY);
point.y -= 32;
pDC->PatBlt(point.x, point.y, 1 , 32, PATCOPY);

pDC->SelectObject(pOldBrush); //重画图标
m_rtIcon.left = rtWnd.Width() - 135;
m_rtIcon.top = GetSystemMetrics(SM_CYFRAME);
m_rtIcon.right = m_rtIcon.left + 32;
m_rtIcon.bottom = m_rtIcon.top + 32;
::DrawIconEx(pDC->m_hDC, m_rtIcon.left, m_rtIcon.top, AfxGetApp()->LoadIcon(IDR_MAINFRAME), 
m_rtIcon.Width(), m_rtIcon.Height(), 0, NULL, DI_NORMAL);
m_rtIcon.OffsetRect(rtWnd.TopLeft()); 
//*/ //准备画XP风格按钮
CBitmap* pBitmap = new CBitmap;
CBitmap* pOldBitmap;
CDC* pDisplayMemDC=new CDC;
pDisplayMemDC->CreateCompatibleDC(pDC); //重画关闭button
rtButtons.left = rtTitle.right - 19;
rtButtons.top = rtTitle.top -3 ;
rtButtons.right = rtButtons.left + 19;
rtButtons.bottom = rtButtons.top + 19;
pBitmap->LoadBitmap(IDB_EXIT_NORMAL);
pOldBitmap=(CBitmap*)pDisplayMemDC->SelectObject(pBitmap);
pDC->BitBlt(rtButtons.left, rtButtons.top, rtButtons.Width(), rtButtons.Height(), pDisplayMemDC, 0, 0, SRCCOPY);
pDisplayMemDC->SelectObject(pOldBitmap);
m_rtButtExit = rtButtons;
m_rtButtExit.OffsetRect(rtWnd.TopLeft()); 
pBitmap->DeleteObject(); //重画最大化/恢复button
rtButtons.right = rtButtons.left - 3;
rtButtons.left = rtButtons.right - 19;
if (IsZoomed())
pBitmap->LoadBitmap(IDB_RESTORE_NORMAL);
else
pBitmap->LoadBitmap(IDB_MAX_NORMAL);
pOldBitmap=(CBitmap*)pDisplayMemDC->SelectObject(pBitmap);
pDC->BitBlt(rtButtons.left, rtButtons.top, rtButtons.Width(), rtButtons.Height(), pDisplayMemDC, 0, 0, SRCCOPY);
pDisplayMemDC->SelectObject(pOldBitmap);
m_rtButtMax = rtButtons;
m_rtButtMax.OffsetRect(rtWnd.TopLeft());
pBitmap->DeleteObject(); //重画最小化button
rtButtons.right = rtButtons.left - 3;
rtButtons.left = rtButtons.right - 19;
pBitmap->LoadBitmap(IDB_MIN_NORMAL);
pOldBitmap=(CBitmap*)pDisplayMemDC->SelectObject(pBitmap);
pDC->BitBlt(rtButtons.left, rtButtons.top, rtButtons.Width(), rtButtons.Height(), pDisplayMemDC, 0, 0, SRCCOPY);
pDisplayMemDC->SelectObject(pOldBitmap);
m_rtButtMin = rtButtons;
m_rtButtMin.OffsetRect(rtWnd.TopLeft());
pBitmap->DeleteObject();

//重画帮助button
rtButtons.right = rtButtons.left - 3;
rtButtons.left = rtButtons.right - 19;
pBitmap->LoadBitmap(IDB_HELP_NORMAL);
pOldBitmap=(CBitmap*)pDisplayMemDC->SelectObject(pBitmap);
pDC->BitBlt(rtButtons.left, rtButtons.top, rtButtons.Width(), rtButtons.Height(), pDisplayMemDC, 0, 0, SRCCOPY);
pDisplayMemDC->SelectObject(pOldBitmap);
m_rtButtHelp = rtButtons;
m_rtButtHelp.OffsetRect(rtWnd.TopLeft());
pBitmap->DeleteObject();
/*
//重画caption
int nOldMode = pDC->SetBkMode(TRANSPARENT);
COLORREF clOldText=pDC->SetTextColor(RGB(255, 255, 255));
pDC->SelectStockObject(SYSTEM_FIXED_FONT);
rtTitle.left += 240; //我实在找不到什么好办法，能即时得到当前菜单的宽度了，如果各位有发现的，请Email me.
rtTitle.top += GetSystemMetrics(SM_CYSIZE) + 2;
rtTitle.bottom = rtTitle.top + 30;
CString m_strTitle;
GetWindowText(m_strTitle);
pDC->DrawText(m_strTitle, &rtTitle, DT_LEFT);
pDC->SetBkMode(nOldMode);
pDC->SetTextColor(clOldText);
//*/
ReleaseDC(pDisplayMemDC);
delete pDisplayMemDC;
delete pBitmap;